Implement busio.I2c.

* Added asf4_conf/samd*/hpl_sercom_config.h
* Adjusted clocks in peripheral_clk_config.h.
* Put some frozen libs back in CPX for testing.
* Implement common-hal I2C
* Add samd*_peripherals.h in parallel with samd*_pins.h for common
  functions and data.
* Store SERCOM index in pins table for convenience.
* Canonicalize some #include guard names in various .h files.

simpler reset of SERCOMs; remove unused routine

.gitignore

@@ -48,3 +48,12 @@ _build
 # Generated rst files
 ######################
 genrst/
+
+# ctags and similar
+###################
+TAGS
+
+# Merge leftovers
+#################
+*.orig
+

ports/atmel-samd/Makefile

@@ -169,6 +169,8 @@ SRC_ASF := \
 	hal/src/hal_atomic.c \
 	hal/src/hal_delay.c \
 	hal/src/hal_flash.c \
+	hal/src/hal_i2c_m_sync.c \
+	hal/src/hal_io.c \
 	hal/src/hal_sleep.c \
 	hal/src/hal_timer.c \
 	hal/src/hal_usb_device.c \
@@ -177,6 +179,7 @@ SRC_ASF := \
 	hpl/nvmctrl/hpl_nvmctrl.c \
 	hpl/pm/hpl_pm.c \
 	hpl/rtc/hpl_rtc.c \
+	hpl/sercom/hpl_sercom.c \
 	hpl/systick/hpl_systick.c \
 	hpl/tc/hpl_tc.c \
 	hpl/usb/hpl_usb.c \
@@ -213,6 +216,7 @@ SRC_C = \
 	flash_api.c \
 	mphalport.c \
 	reset.c \
+	$(CHIP_FAMILY)_peripherals.c \
 	$(CHIP_FAMILY)_pins.c \
 	tick.c \
 	usb.c \
@@ -246,6 +250,8 @@ endif
 
 SRC_COMMON_HAL = \
 	board/__init__.c \
+	busio/__init__.c \
+	busio/I2C.c \
 	digitalio/__init__.c \
 	digitalio/DigitalInOut.c \
 	microcontroller/__init__.c \
@@ -253,7 +259,7 @@ SRC_COMMON_HAL = \
 	microcontroller/Processor.c \
 	neopixel_write/__init__.c \
 	os/__init__.c \
-	time/__init__.c
+	time/__init__.c \
 #	analogio/__init__.c \
 	analogio/AnalogIn.c \
 	analogio/AnalogOut.c \
@@ -261,8 +267,6 @@ SRC_COMMON_HAL = \
 	audiobusio/PDMIn.c \
 	audioio/__init__.c \
 	audioio/AudioOut.c \
-	busio/__init__.c \
-	busio/I2C.c \
 	busio/SPI.c \
 	busio/UART.c \
 	neopixel_write/__init__.c \

ports/atmel-samd/asf4

@@ -1 +1 @@
-Subproject commit 1e0e419f197661baa40ce35bc712ce14f0d4a714
+Subproject commit 7ffa51e117eb6d6b6679febfc77e50d03731b467

ports/atmel-samd/asf4_conf/samd21/hpl_sercom_config.h

@@ -0,0 +1,818 @@
+/* Auto-generated config file hpl_sercom_config.h */
+#ifndef HPL_SERCOM_CONFIG_H
+#define HPL_SERCOM_CONFIG_H
+
+// <<< Use Configuration Wizard in Context Menu >>>
+
+#include <peripheral_clk_config.h>
+
+#ifndef SERCOM_I2CM_CTRLA_MODE_I2C_MASTER
+#define SERCOM_I2CM_CTRLA_MODE_I2C_MASTER (5 << 2)
+#endif
+
+#ifndef CONF_SERCOM_0_I2CM_ENABLE
+#define CONF_SERCOM_0_I2CM_ENABLE 1
+#endif
+
+// <h> Basic
+
+// <o> I2C Bus clock speed (Hz) <1-400000>
+// <i> I2C Bus clock (SCL) speed measured in Hz
+// <id> i2c_master_baud_rate
+#ifndef CONF_SERCOM_0_I2CM_BAUD
+#define CONF_SERCOM_0_I2CM_BAUD 100000
+#endif
+
+// </h>
+
+// <e> Advanced
+// <id> i2c_master_advanced
+#ifndef CONF_SERCOM_0_I2CM_ADVANCED_CONFIG
+#define CONF_SERCOM_0_I2CM_ADVANCED_CONFIG 0
+#endif
+
+// <o> TRise (ns) <0-300>
+// <i> Determined by the bus impedance, check electric characteristics in the datasheet
+// <i> Standard Fast Mode: typical 215ns, max 300ns
+// <i> Fast Mode +: typical 60ns, max 100ns
+// <i> High Speed Mode: typical 20ns, max 40ns
+// <id> i2c_master_arch_trise
+
+#ifndef CONF_SERCOM_0_I2CM_TRISE
+#define CONF_SERCOM_0_I2CM_TRISE 215
+#endif
+
+// <q> Master SCL Low Extended Time-Out (MEXTTOEN)
+// <i> This enables the master SCL low extend time-out
+// <id> i2c_master_arch_mexttoen
+#ifndef CONF_SERCOM_0_I2CM_MEXTTOEN
+#define CONF_SERCOM_0_I2CM_MEXTTOEN 0
+#endif
+
+// <q> Slave SCL Low Extend Time-Out (SEXTTOEN)
+// <i> Enables the slave SCL low extend time-out. If SCL is cumulatively held low for greater than 25ms from the initial START to a STOP, the slave will release its clock hold if enabled and reset the internal state machine
+// <id> i2c_master_arch_sexttoen
+#ifndef CONF_SERCOM_0_I2CM_SEXTTOEN
+#define CONF_SERCOM_0_I2CM_SEXTTOEN 0
+#endif
+
+// <q> SCL Low Time-Out (LOWTOUT)
+// <i> Enables SCL low time-out. If SCL is held low for 25ms-35ms, the master will release it's clock hold
+// <id> i2c_master_arch_lowtout
+#ifndef CONF_SERCOM_0_I2CM_LOWTOUT
+#define CONF_SERCOM_0_I2CM_LOWTOUT 0
+#endif
+
+// <o> Inactive Time-Out (INACTOUT)
+// <0x0=>Disabled
+// <0x1=>5-6 SCL cycle time-out(50-60us)
+// <0x2=>10-11 SCL cycle time-out(100-110us)
+// <0x3=>20-21 SCL cycle time-out(200-210us)
+// <i> Defines if inactivity time-out should be enabled, and how long the time-out should be
+// <id> i2c_master_arch_inactout
+#ifndef CONF_SERCOM_0_I2CM_INACTOUT
+#define CONF_SERCOM_0_I2CM_INACTOUT 0x0
+#endif
+
+// <o> SDA Hold Time (SDAHOLD)
+// <0=>Disabled
+// <1=>50-100ns hold time
+// <2=>300-600ns hold time
+// <3=>400-800ns hold time
+// <i> Defines the SDA hold time with respect to the negative edge of SCL
+// <id> i2c_master_arch_sdahold
+#ifndef CONF_SERCOM_0_I2CM_SDAHOLD
+#define CONF_SERCOM_0_I2CM_SDAHOLD 0x2
+#endif
+
+// <q> Run in stand-by
+// <i> Determine if the module shall run in standby sleep mode
+// <id> i2c_master_arch_runstdby
+#ifndef CONF_SERCOM_0_I2CM_RUNSTDBY
+#define CONF_SERCOM_0_I2CM_RUNSTDBY 0
+#endif
+
+// <o> Debug Stop Mode
+// <i> Behavior of the baud-rate generator when CPU is halted by external debugger.
+// <0=>Keep running
+// <1=>Halt
+// <id> i2c_master_arch_dbgstop
+#ifndef CONF_SERCOM_0_I2CM_DEBUG_STOP_MODE
+#define CONF_SERCOM_0_I2CM_DEBUG_STOP_MODE 0
+#endif
+
+// </e>
+
+#ifndef CONF_SERCOM_0_I2CM_SPEED
+#define CONF_SERCOM_0_I2CM_SPEED 0x00 // Speed: Standard/Fast mode
+#endif
+#if CONF_SERCOM_0_I2CM_TRISE < 215 || CONF_SERCOM_0_I2CM_TRISE > 300
+#warning Bad I2C Rise time for Standard/Fast mode, reset to 215ns
+#undef CONF_SERCOM_0_I2CM_TRISE
+#define CONF_SERCOM_0_I2CM_TRISE 215
+#endif
+
+//                  gclk_freq - (i2c_scl_freq * 10) - (gclk_freq * i2c_scl_freq * Trise)
+// BAUD + BAUDLOW = --------------------------------------------------------------------
+//                  i2c_scl_freq
+// BAUD:    register value low  [7:0]
+// BAUDLOW: register value high [15:8], only used for odd BAUD + BAUDLOW
+#define CONF_SERCOM_0_I2CM_BAUD_BAUDLOW                                                                                \
+	(((CONF_GCLK_SERCOM0_CORE_FREQUENCY - (CONF_SERCOM_0_I2CM_BAUD * 10)                                               \
+	   - (CONF_SERCOM_0_I2CM_TRISE * (CONF_SERCOM_0_I2CM_BAUD / 100) * (CONF_GCLK_SERCOM0_CORE_FREQUENCY / 10000)      \
+	      / 1000))                                                                                                     \
+	      * 10                                                                                                         \
+	  + 5)                                                                                                             \
+	 / (CONF_SERCOM_0_I2CM_BAUD * 10))
+#ifndef CONF_SERCOM_0_I2CM_BAUD_RATE
+#if CONF_SERCOM_0_I2CM_BAUD_BAUDLOW > (0xFF * 2)
+//#warning Requested I2C baudrate too low, please check
+#define CONF_SERCOM_0_I2CM_BAUD_RATE 0xFF
+#elif CONF_SERCOM_0_I2CM_BAUD_BAUDLOW <= 1
+//#warning Requested I2C baudrate too high, please check
+#define CONF_SERCOM_0_I2CM_BAUD_RATE 1
+#else
+#define CONF_SERCOM_0_I2CM_BAUD_RATE                                                                                   \
+	((CONF_SERCOM_0_I2CM_BAUD_BAUDLOW & 0x1)                                                                           \
+	     ? (CONF_SERCOM_0_I2CM_BAUD_BAUDLOW / 2) + ((CONF_SERCOM_0_I2CM_BAUD_BAUDLOW / 2 + 1) << 8)                    \
+	     : (CONF_SERCOM_0_I2CM_BAUD_BAUDLOW / 2))
+#endif
+#endif
+#include <peripheral_clk_config.h>
+
+#ifndef SERCOM_I2CM_CTRLA_MODE_I2C_MASTER
+#define SERCOM_I2CM_CTRLA_MODE_I2C_MASTER (5 << 2)
+#endif
+
+#ifndef CONF_SERCOM_1_I2CM_ENABLE
+#define CONF_SERCOM_1_I2CM_ENABLE 1
+#endif
+
+// <h> Basic
+
+// <o> I2C Bus clock speed (Hz) <1-400000>
+// <i> I2C Bus clock (SCL) speed measured in Hz
+// <id> i2c_master_baud_rate
+#ifndef CONF_SERCOM_1_I2CM_BAUD
+#define CONF_SERCOM_1_I2CM_BAUD 100000
+#endif
+
+// </h>
+
+// <e> Advanced
+// <id> i2c_master_advanced
+#ifndef CONF_SERCOM_1_I2CM_ADVANCED_CONFIG
+#define CONF_SERCOM_1_I2CM_ADVANCED_CONFIG 0
+#endif
+
+// <o> TRise (ns) <0-300>
+// <i> Determined by the bus impedance, check electric characteristics in the datasheet
+// <i> Standard Fast Mode: typical 215ns, max 300ns
+// <i> Fast Mode +: typical 60ns, max 100ns
+// <i> High Speed Mode: typical 20ns, max 40ns
+// <id> i2c_master_arch_trise
+
+#ifndef CONF_SERCOM_1_I2CM_TRISE
+#define CONF_SERCOM_1_I2CM_TRISE 215
+#endif
+
+// <q> Master SCL Low Extended Time-Out (MEXTTOEN)
+// <i> This enables the master SCL low extend time-out
+// <id> i2c_master_arch_mexttoen
+#ifndef CONF_SERCOM_1_I2CM_MEXTTOEN
+#define CONF_SERCOM_1_I2CM_MEXTTOEN 0
+#endif
+
+// <q> Slave SCL Low Extend Time-Out (SEXTTOEN)
+// <i> Enables the slave SCL low extend time-out. If SCL is cumulatively held low for greater than 25ms from the initial START to a STOP, the slave will release its clock hold if enabled and reset the internal state machine
+// <id> i2c_master_arch_sexttoen
+#ifndef CONF_SERCOM_1_I2CM_SEXTTOEN
+#define CONF_SERCOM_1_I2CM_SEXTTOEN 0
+#endif
+
+// <q> SCL Low Time-Out (LOWTOUT)
+// <i> Enables SCL low time-out. If SCL is held low for 25ms-35ms, the master will release it's clock hold
+// <id> i2c_master_arch_lowtout
+#ifndef CONF_SERCOM_1_I2CM_LOWTOUT
+#define CONF_SERCOM_1_I2CM_LOWTOUT 0
+#endif
+
+// <o> Inactive Time-Out (INACTOUT)
+// <0x0=>Disabled
+// <0x1=>5-6 SCL cycle time-out(50-60us)
+// <0x2=>10-11 SCL cycle time-out(100-110us)
+// <0x3=>20-21 SCL cycle time-out(200-210us)
+// <i> Defines if inactivity time-out should be enabled, and how long the time-out should be
+// <id> i2c_master_arch_inactout
+#ifndef CONF_SERCOM_1_I2CM_INACTOUT
+#define CONF_SERCOM_1_I2CM_INACTOUT 0x0
+#endif
+
+// <o> SDA Hold Time (SDAHOLD)
+// <0=>Disabled
+// <1=>50-100ns hold time
+// <2=>300-600ns hold time
+// <3=>400-800ns hold time
+// <i> Defines the SDA hold time with respect to the negative edge of SCL
+// <id> i2c_master_arch_sdahold
+#ifndef CONF_SERCOM_1_I2CM_SDAHOLD
+#define CONF_SERCOM_1_I2CM_SDAHOLD 0x2
+#endif
+
+// <q> Run in stand-by
+// <i> Determine if the module shall run in standby sleep mode
+// <id> i2c_master_arch_runstdby
+#ifndef CONF_SERCOM_1_I2CM_RUNSTDBY
+#define CONF_SERCOM_1_I2CM_RUNSTDBY 0
+#endif
+
+// <o> Debug Stop Mode
+// <i> Behavior of the baud-rate generator when CPU is halted by external debugger.
+// <0=>Keep running
+// <1=>Halt
+// <id> i2c_master_arch_dbgstop
+#ifndef CONF_SERCOM_1_I2CM_DEBUG_STOP_MODE
+#define CONF_SERCOM_1_I2CM_DEBUG_STOP_MODE 0
+#endif
+
+// </e>
+
+#ifndef CONF_SERCOM_1_I2CM_SPEED
+#define CONF_SERCOM_1_I2CM_SPEED 0x00 // Speed: Standard/Fast mode
+#endif
+#if CONF_SERCOM_1_I2CM_TRISE < 215 || CONF_SERCOM_1_I2CM_TRISE > 300
+//#warning Bad I2C Rise time for Standard/Fast mode, reset to 215ns
+#undef CONF_SERCOM_1_I2CM_TRISE
+#define CONF_SERCOM_1_I2CM_TRISE 215
+#endif
+
+//                  gclk_freq - (i2c_scl_freq * 10) - (gclk_freq * i2c_scl_freq * Trise)
+// BAUD + BAUDLOW = --------------------------------------------------------------------
+//                  i2c_scl_freq
+// BAUD:    register value low  [7:0]
+// BAUDLOW: register value high [15:8], only used for odd BAUD + BAUDLOW
+#define CONF_SERCOM_1_I2CM_BAUD_BAUDLOW                                                                                \
+	(((CONF_GCLK_SERCOM1_CORE_FREQUENCY - (CONF_SERCOM_1_I2CM_BAUD * 10)                                               \
+	   - (CONF_SERCOM_1_I2CM_TRISE * (CONF_SERCOM_1_I2CM_BAUD / 100) * (CONF_GCLK_SERCOM1_CORE_FREQUENCY / 10000)      \
+	      / 1000))                                                                                                     \
+	      * 10                                                                                                         \
+	  + 5)                                                                                                             \
+	 / (CONF_SERCOM_1_I2CM_BAUD * 10))
+#ifndef CONF_SERCOM_1_I2CM_BAUD_RATE
+#if CONF_SERCOM_1_I2CM_BAUD_BAUDLOW > (0xFF * 2)
+//#warning Requested I2C baudrate too low, please check
+#define CONF_SERCOM_1_I2CM_BAUD_RATE 0xFF
+#elif CONF_SERCOM_1_I2CM_BAUD_BAUDLOW <= 1
+//#warning Requested I2C baudrate too high, please check
+#define CONF_SERCOM_1_I2CM_BAUD_RATE 1
+#else
+#define CONF_SERCOM_1_I2CM_BAUD_RATE                                                                                   \
+	((CONF_SERCOM_1_I2CM_BAUD_BAUDLOW & 0x1)                                                                           \
+	     ? (CONF_SERCOM_1_I2CM_BAUD_BAUDLOW / 2) + ((CONF_SERCOM_1_I2CM_BAUD_BAUDLOW / 2 + 1) << 8)                    \
+	     : (CONF_SERCOM_1_I2CM_BAUD_BAUDLOW / 2))
+#endif
+#endif
+
+#include <peripheral_clk_config.h>
+
+#ifndef SERCOM_I2CM_CTRLA_MODE_I2C_MASTER
+#define SERCOM_I2CM_CTRLA_MODE_I2C_MASTER (5 << 2)
+#endif
+
+#ifndef CONF_SERCOM_2_I2CM_ENABLE
+#define CONF_SERCOM_2_I2CM_ENABLE 1
+#endif
+
+// <h> Basic
+
+// <o> I2C Bus clock speed (Hz) <1-400000>
+// <i> I2C Bus clock (SCL) speed measured in Hz
+// <id> i2c_master_baud_rate
+#ifndef CONF_SERCOM_2_I2CM_BAUD
+#define CONF_SERCOM_2_I2CM_BAUD 100000
+#endif
+
+// </h>
+
+// <e> Advanced
+// <id> i2c_master_advanced
+#ifndef CONF_SERCOM_2_I2CM_ADVANCED_CONFIG
+#define CONF_SERCOM_2_I2CM_ADVANCED_CONFIG 0
+#endif
+
+// <o> TRise (ns) <0-300>
+// <i> Determined by the bus impedance, check electric characteristics in the datasheet
+// <i> Standard Fast Mode: typical 215ns, max 300ns
+// <i> Fast Mode +: typical 60ns, max 100ns
+// <i> High Speed Mode: typical 20ns, max 40ns
+// <id> i2c_master_arch_trise
+
+#ifndef CONF_SERCOM_2_I2CM_TRISE
+#define CONF_SERCOM_2_I2CM_TRISE 215
+#endif
+
+// <q> Master SCL Low Extended Time-Out (MEXTTOEN)
+// <i> This enables the master SCL low extend time-out
+// <id> i2c_master_arch_mexttoen
+#ifndef CONF_SERCOM_2_I2CM_MEXTTOEN
+#define CONF_SERCOM_2_I2CM_MEXTTOEN 0
+#endif
+
+// <q> Slave SCL Low Extend Time-Out (SEXTTOEN)
+// <i> Enables the slave SCL low extend time-out. If SCL is cumulatively held low for greater than 25ms from the initial START to a STOP, the slave will release its clock hold if enabled and reset the internal state machine
+// <id> i2c_master_arch_sexttoen
+#ifndef CONF_SERCOM_2_I2CM_SEXTTOEN
+#define CONF_SERCOM_2_I2CM_SEXTTOEN 0
+#endif
+
+// <q> SCL Low Time-Out (LOWTOUT)
+// <i> Enables SCL low time-out. If SCL is held low for 25ms-35ms, the master will release it's clock hold
+// <id> i2c_master_arch_lowtout
+#ifndef CONF_SERCOM_2_I2CM_LOWTOUT
+#define CONF_SERCOM_2_I2CM_LOWTOUT 0
+#endif
+
+// <o> Inactive Time-Out (INACTOUT)
+// <0x0=>Disabled
+// <0x1=>5-6 SCL cycle time-out(50-60us)
+// <0x2=>10-11 SCL cycle time-out(100-110us)
+// <0x3=>20-21 SCL cycle time-out(200-210us)
+// <i> Defines if inactivity time-out should be enabled, and how long the time-out should be
+// <id> i2c_master_arch_inactout
+#ifndef CONF_SERCOM_2_I2CM_INACTOUT
+#define CONF_SERCOM_2_I2CM_INACTOUT 0x0
+#endif
+
+// <o> SDA Hold Time (SDAHOLD)
+// <0=>Disabled
+// <1=>50-100ns hold time
+// <2=>300-600ns hold time
+// <3=>400-800ns hold time
+// <i> Defines the SDA hold time with respect to the negative edge of SCL
+// <id> i2c_master_arch_sdahold
+#ifndef CONF_SERCOM_2_I2CM_SDAHOLD
+#define CONF_SERCOM_2_I2CM_SDAHOLD 0x2
+#endif
+
+// <q> Run in stand-by
+// <i> Determine if the module shall run in standby sleep mode
+// <id> i2c_master_arch_runstdby
+#ifndef CONF_SERCOM_2_I2CM_RUNSTDBY
+#define CONF_SERCOM_2_I2CM_RUNSTDBY 0
+#endif
+
+// <o> Debug Stop Mode
+// <i> Behavior of the baud-rate generator when CPU is halted by external debugger.
+// <0=>Keep running
+// <1=>Halt
+// <id> i2c_master_arch_dbgstop
+#ifndef CONF_SERCOM_2_I2CM_DEBUG_STOP_MODE
+#define CONF_SERCOM_2_I2CM_DEBUG_STOP_MODE 0
+#endif
+
+// </e>
+
+#ifndef CONF_SERCOM_2_I2CM_SPEED
+#define CONF_SERCOM_2_I2CM_SPEED 0x00 // Speed: Standard/Fast mode
+#endif
+#if CONF_SERCOM_2_I2CM_TRISE < 215 || CONF_SERCOM_2_I2CM_TRISE > 300
+//#warning Bad I2C Rise time for Standard/Fast mode, reset to 215ns
+#undef CONF_SERCOM_2_I2CM_TRISE
+#define CONF_SERCOM_2_I2CM_TRISE 215
+#endif
+
+//                  gclk_freq - (i2c_scl_freq * 10) - (gclk_freq * i2c_scl_freq * Trise)
+// BAUD + BAUDLOW = --------------------------------------------------------------------
+//                  i2c_scl_freq
+// BAUD:    register value low  [7:0]
+// BAUDLOW: register value high [15:8], only used for odd BAUD + BAUDLOW
+#define CONF_SERCOM_2_I2CM_BAUD_BAUDLOW                                                                                \
+	(((CONF_GCLK_SERCOM2_CORE_FREQUENCY - (CONF_SERCOM_2_I2CM_BAUD * 10)                                               \
+	   - (CONF_SERCOM_2_I2CM_TRISE * (CONF_SERCOM_2_I2CM_BAUD / 100) * (CONF_GCLK_SERCOM2_CORE_FREQUENCY / 10000)      \
+	      / 1000))                                                                                                     \
+	      * 10                                                                                                         \
+	  + 5)                                                                                                             \
+	 / (CONF_SERCOM_2_I2CM_BAUD * 10))
+#ifndef CONF_SERCOM_2_I2CM_BAUD_RATE
+#if CONF_SERCOM_2_I2CM_BAUD_BAUDLOW > (0xFF * 2)
+//#warning Requested I2C baudrate too low, please check
+#define CONF_SERCOM_2_I2CM_BAUD_RATE 0xFF
+#elif CONF_SERCOM_2_I2CM_BAUD_BAUDLOW <= 1
+//#warning Requested I2C baudrate too high, please check
+#define CONF_SERCOM_2_I2CM_BAUD_RATE 1
+#else
+#define CONF_SERCOM_2_I2CM_BAUD_RATE                                                                                   \
+	((CONF_SERCOM_2_I2CM_BAUD_BAUDLOW & 0x1)                                                                           \
+	     ? (CONF_SERCOM_2_I2CM_BAUD_BAUDLOW / 2) + ((CONF_SERCOM_2_I2CM_BAUD_BAUDLOW / 2 + 1) << 8)                    \
+	     : (CONF_SERCOM_2_I2CM_BAUD_BAUDLOW / 2))
+#endif
+#endif
+
+#include <peripheral_clk_config.h>
+
+#ifndef SERCOM_I2CM_CTRLA_MODE_I2C_MASTER
+#define SERCOM_I2CM_CTRLA_MODE_I2C_MASTER (5 << 2)
+#endif
+
+#ifndef CONF_SERCOM_3_I2CM_ENABLE
+#define CONF_SERCOM_3_I2CM_ENABLE 1
+#endif
+
+// <h> Basic
+
+// <o> I2C Bus clock speed (Hz) <1-400000>
+// <i> I2C Bus clock (SCL) speed measured in Hz
+// <id> i2c_master_baud_rate
+#ifndef CONF_SERCOM_3_I2CM_BAUD
+#define CONF_SERCOM_3_I2CM_BAUD 100000
+#endif
+
+// </h>
+
+// <e> Advanced
+// <id> i2c_master_advanced
+#ifndef CONF_SERCOM_3_I2CM_ADVANCED_CONFIG
+#define CONF_SERCOM_3_I2CM_ADVANCED_CONFIG 0
+#endif
+
+// <o> TRise (ns) <0-300>
+// <i> Determined by the bus impedance, check electric characteristics in the datasheet
+// <i> Standard Fast Mode: typical 215ns, max 300ns
+// <i> Fast Mode +: typical 60ns, max 100ns
+// <i> High Speed Mode: typical 20ns, max 40ns
+// <id> i2c_master_arch_trise
+
+#ifndef CONF_SERCOM_3_I2CM_TRISE
+#define CONF_SERCOM_3_I2CM_TRISE 215
+#endif
+
+// <q> Master SCL Low Extended Time-Out (MEXTTOEN)
+// <i> This enables the master SCL low extend time-out
+// <id> i2c_master_arch_mexttoen
+#ifndef CONF_SERCOM_3_I2CM_MEXTTOEN
+#define CONF_SERCOM_3_I2CM_MEXTTOEN 0
+#endif
+
+// <q> Slave SCL Low Extend Time-Out (SEXTTOEN)
+// <i> Enables the slave SCL low extend time-out. If SCL is cumulatively held low for greater than 25ms from the initial START to a STOP, the slave will release its clock hold if enabled and reset the internal state machine
+// <id> i2c_master_arch_sexttoen
+#ifndef CONF_SERCOM_3_I2CM_SEXTTOEN
+#define CONF_SERCOM_3_I2CM_SEXTTOEN 0
+#endif
+
+// <q> SCL Low Time-Out (LOWTOUT)
+// <i> Enables SCL low time-out. If SCL is held low for 25ms-35ms, the master will release it's clock hold
+// <id> i2c_master_arch_lowtout
+#ifndef CONF_SERCOM_3_I2CM_LOWTOUT
+#define CONF_SERCOM_3_I2CM_LOWTOUT 0
+#endif
+
+// <o> Inactive Time-Out (INACTOUT)
+// <0x0=>Disabled
+// <0x1=>5-6 SCL cycle time-out(50-60us)
+// <0x2=>10-11 SCL cycle time-out(100-110us)
+// <0x3=>20-21 SCL cycle time-out(200-210us)
+// <i> Defines if inactivity time-out should be enabled, and how long the time-out should be
+// <id> i2c_master_arch_inactout
+#ifndef CONF_SERCOM_3_I2CM_INACTOUT
+#define CONF_SERCOM_3_I2CM_INACTOUT 0x0
+#endif
+
+// <o> SDA Hold Time (SDAHOLD)
+// <0=>Disabled
+// <1=>50-100ns hold time
+// <2=>300-600ns hold time
+// <3=>400-800ns hold time
+// <i> Defines the SDA hold time with respect to the negative edge of SCL
+// <id> i2c_master_arch_sdahold
+#ifndef CONF_SERCOM_3_I2CM_SDAHOLD
+#define CONF_SERCOM_3_I2CM_SDAHOLD 0x2
+#endif
+
+// <q> Run in stand-by
+// <i> Determine if the module shall run in standby sleep mode
+// <id> i2c_master_arch_runstdby
+#ifndef CONF_SERCOM_3_I2CM_RUNSTDBY
+#define CONF_SERCOM_3_I2CM_RUNSTDBY 0
+#endif
+
+// <o> Debug Stop Mode
+// <i> Behavior of the baud-rate generator when CPU is halted by external debugger.
+// <0=>Keep running
+// <1=>Halt
+// <id> i2c_master_arch_dbgstop
+#ifndef CONF_SERCOM_3_I2CM_DEBUG_STOP_MODE
+#define CONF_SERCOM_3_I2CM_DEBUG_STOP_MODE 0
+#endif
+
+// </e>
+
+#ifndef CONF_SERCOM_3_I2CM_SPEED
+#define CONF_SERCOM_3_I2CM_SPEED 0x00 // Speed: Standard/Fast mode
+#endif
+#if CONF_SERCOM_3_I2CM_TRISE < 215 || CONF_SERCOM_3_I2CM_TRISE > 300
+//#warning Bad I2C Rise time for Standard/Fast mode, reset to 215ns
+#undef CONF_SERCOM_3_I2CM_TRISE
+#define CONF_SERCOM_3_I2CM_TRISE 215
+#endif
+
+//                  gclk_freq - (i2c_scl_freq * 10) - (gclk_freq * i2c_scl_freq * Trise)
+// BAUD + BAUDLOW = --------------------------------------------------------------------
+//                  i2c_scl_freq
+// BAUD:    register value low  [7:0]
+// BAUDLOW: register value high [15:8], only used for odd BAUD + BAUDLOW
+#define CONF_SERCOM_3_I2CM_BAUD_BAUDLOW                                                                                \
+	(((CONF_GCLK_SERCOM3_CORE_FREQUENCY - (CONF_SERCOM_3_I2CM_BAUD * 10)                                               \
+	   - (CONF_SERCOM_3_I2CM_TRISE * (CONF_SERCOM_3_I2CM_BAUD / 100) * (CONF_GCLK_SERCOM3_CORE_FREQUENCY / 10000)      \
+	      / 1000))                                                                                                     \
+	      * 10                                                                                                         \
+	  + 5)                                                                                                             \
+	 / (CONF_SERCOM_3_I2CM_BAUD * 10))
+#ifndef CONF_SERCOM_3_I2CM_BAUD_RATE
+#if CONF_SERCOM_3_I2CM_BAUD_BAUDLOW > (0xFF * 2)
+//#warning Requested I2C baudrate too low, please check
+#define CONF_SERCOM_3_I2CM_BAUD_RATE 0xFF
+#elif CONF_SERCOM_3_I2CM_BAUD_BAUDLOW <= 1
+//#warning Requested I2C baudrate too high, please check
+#define CONF_SERCOM_3_I2CM_BAUD_RATE 1
+#else
+#define CONF_SERCOM_3_I2CM_BAUD_RATE                                                                                   \
+	((CONF_SERCOM_3_I2CM_BAUD_BAUDLOW & 0x1)                                                                           \
+	     ? (CONF_SERCOM_3_I2CM_BAUD_BAUDLOW / 2) + ((CONF_SERCOM_3_I2CM_BAUD_BAUDLOW / 2 + 1) << 8)                    \
+	     : (CONF_SERCOM_3_I2CM_BAUD_BAUDLOW / 2))
+#endif
+#endif
+
+#include <peripheral_clk_config.h>
+
+#ifndef SERCOM_I2CM_CTRLA_MODE_I2C_MASTER
+#define SERCOM_I2CM_CTRLA_MODE_I2C_MASTER (5 << 2)
+#endif
+
+#ifndef CONF_SERCOM_4_I2CM_ENABLE
+#define CONF_SERCOM_4_I2CM_ENABLE 1
+#endif
+
+// <h> Basic
+
+// <o> I2C Bus clock speed (Hz) <1-400000>
+// <i> I2C Bus clock (SCL) speed measured in Hz
+// <id> i2c_master_baud_rate
+#ifndef CONF_SERCOM_4_I2CM_BAUD
+#define CONF_SERCOM_4_I2CM_BAUD 100000
+#endif
+
+// </h>
+
+// <e> Advanced
+// <id> i2c_master_advanced
+#ifndef CONF_SERCOM_4_I2CM_ADVANCED_CONFIG
+#define CONF_SERCOM_4_I2CM_ADVANCED_CONFIG 0
+#endif
+
+// <o> TRise (ns) <0-300>
+// <i> Determined by the bus impedance, check electric characteristics in the datasheet
+// <i> Standard Fast Mode: typical 215ns, max 300ns
+// <i> Fast Mode +: typical 60ns, max 100ns
+// <i> High Speed Mode: typical 20ns, max 40ns
+// <id> i2c_master_arch_trise
+
+#ifndef CONF_SERCOM_4_I2CM_TRISE
+#define CONF_SERCOM_4_I2CM_TRISE 215
+#endif
+
+// <q> Master SCL Low Extended Time-Out (MEXTTOEN)
+// <i> This enables the master SCL low extend time-out
+// <id> i2c_master_arch_mexttoen
+#ifndef CONF_SERCOM_4_I2CM_MEXTTOEN
+#define CONF_SERCOM_4_I2CM_MEXTTOEN 0
+#endif
+
+// <q> Slave SCL Low Extend Time-Out (SEXTTOEN)
+// <i> Enables the slave SCL low extend time-out. If SCL is cumulatively held low for greater than 25ms from the initial START to a STOP, the slave will release its clock hold if enabled and reset the internal state machine
+// <id> i2c_master_arch_sexttoen
+#ifndef CONF_SERCOM_4_I2CM_SEXTTOEN
+#define CONF_SERCOM_4_I2CM_SEXTTOEN 0
+#endif
+
+// <q> SCL Low Time-Out (LOWTOUT)
+// <i> Enables SCL low time-out. If SCL is held low for 25ms-35ms, the master will release it's clock hold
+// <id> i2c_master_arch_lowtout
+#ifndef CONF_SERCOM_4_I2CM_LOWTOUT
+#define CONF_SERCOM_4_I2CM_LOWTOUT 0
+#endif
+
+// <o> Inactive Time-Out (INACTOUT)
+// <0x0=>Disabled
+// <0x1=>5-6 SCL cycle time-out(50-60us)
+// <0x2=>10-11 SCL cycle time-out(100-110us)
+// <0x3=>20-21 SCL cycle time-out(200-210us)
+// <i> Defines if inactivity time-out should be enabled, and how long the time-out should be
+// <id> i2c_master_arch_inactout
+#ifndef CONF_SERCOM_4_I2CM_INACTOUT
+#define CONF_SERCOM_4_I2CM_INACTOUT 0x0
+#endif
+
+// <o> SDA Hold Time (SDAHOLD)
+// <0=>Disabled
+// <1=>50-100ns hold time
+// <2=>300-600ns hold time
+// <3=>400-800ns hold time
+// <i> Defines the SDA hold time with respect to the negative edge of SCL
+// <id> i2c_master_arch_sdahold
+#ifndef CONF_SERCOM_4_I2CM_SDAHOLD
+#define CONF_SERCOM_4_I2CM_SDAHOLD 0x2
+#endif
+
+// <q> Run in stand-by
+// <i> Determine if the module shall run in standby sleep mode
+// <id> i2c_master_arch_runstdby
+#ifndef CONF_SERCOM_4_I2CM_RUNSTDBY
+#define CONF_SERCOM_4_I2CM_RUNSTDBY 0
+#endif
+
+// <o> Debug Stop Mode
+// <i> Behavior of the baud-rate generator when CPU is halted by external debugger.
+// <0=>Keep running
+// <1=>Halt
+// <id> i2c_master_arch_dbgstop
+#ifndef CONF_SERCOM_4_I2CM_DEBUG_STOP_MODE
+#define CONF_SERCOM_4_I2CM_DEBUG_STOP_MODE 0
+#endif
+
+// </e>
+
+#ifndef CONF_SERCOM_4_I2CM_SPEED
+#define CONF_SERCOM_4_I2CM_SPEED 0x00 // Speed: Standard/Fast mode
+#endif
+#if CONF_SERCOM_4_I2CM_TRISE < 215 || CONF_SERCOM_4_I2CM_TRISE > 300
+//#warning Bad I2C Rise time for Standard/Fast mode, reset to 215ns
+#undef CONF_SERCOM_4_I2CM_TRISE
+#define CONF_SERCOM_4_I2CM_TRISE 215
+#endif
+
+//                  gclk_freq - (i2c_scl_freq * 10) - (gclk_freq * i2c_scl_freq * Trise)
+// BAUD + BAUDLOW = --------------------------------------------------------------------
+//                  i2c_scl_freq
+// BAUD:    register value low  [7:0]
+// BAUDLOW: register value high [15:8], only used for odd BAUD + BAUDLOW
+#define CONF_SERCOM_4_I2CM_BAUD_BAUDLOW                                                                                \
+	(((CONF_GCLK_SERCOM4_CORE_FREQUENCY - (CONF_SERCOM_4_I2CM_BAUD * 10)                                               \
+	   - (CONF_SERCOM_4_I2CM_TRISE * (CONF_SERCOM_4_I2CM_BAUD / 100) * (CONF_GCLK_SERCOM4_CORE_FREQUENCY / 10000)      \
+	      / 1000))                                                                                                     \
+	      * 10                                                                                                         \
+	  + 5)                                                                                                             \
+	 / (CONF_SERCOM_4_I2CM_BAUD * 10))
+#ifndef CONF_SERCOM_4_I2CM_BAUD_RATE
+#if CONF_SERCOM_4_I2CM_BAUD_BAUDLOW > (0xFF * 2)
+//#warning Requested I2C baudrate too low, please check
+#define CONF_SERCOM_4_I2CM_BAUD_RATE 0xFF
+#elif CONF_SERCOM_4_I2CM_BAUD_BAUDLOW <= 1
+//#warning Requested I2C baudrate too high, please check
+#define CONF_SERCOM_4_I2CM_BAUD_RATE 1
+#else
+#define CONF_SERCOM_4_I2CM_BAUD_RATE                                                                                   \
+	((CONF_SERCOM_4_I2CM_BAUD_BAUDLOW & 0x1)                                                                           \
+	     ? (CONF_SERCOM_4_I2CM_BAUD_BAUDLOW / 2) + ((CONF_SERCOM_4_I2CM_BAUD_BAUDLOW / 2 + 1) << 8)                    \
+	     : (CONF_SERCOM_4_I2CM_BAUD_BAUDLOW / 2))
+#endif
+#endif
+
+#include <peripheral_clk_config.h>
+
+#ifndef SERCOM_I2CM_CTRLA_MODE_I2C_MASTER
+#define SERCOM_I2CM_CTRLA_MODE_I2C_MASTER (5 << 2)
+#endif
+
+#ifndef CONF_SERCOM_5_I2CM_ENABLE
+#define CONF_SERCOM_5_I2CM_ENABLE 1
+#endif
+
+// <h> Basic
+
+// <o> I2C Bus clock speed (Hz) <1-400000>
+// <i> I2C Bus clock (SCL) speed measured in Hz
+// <id> i2c_master_baud_rate
+#ifndef CONF_SERCOM_5_I2CM_BAUD
+#define CONF_SERCOM_5_I2CM_BAUD 100000
+#endif
+
+// </h>
+
+// <e> Advanced
+// <id> i2c_master_advanced
+#ifndef CONF_SERCOM_5_I2CM_ADVANCED_CONFIG
+#define CONF_SERCOM_5_I2CM_ADVANCED_CONFIG 0
+#endif
+
+// <o> TRise (ns) <0-300>
+// <i> Determined by the bus impedance, check electric characteristics in the datasheet
+// <i> Standard Fast Mode: typical 215ns, max 300ns
+// <i> Fast Mode +: typical 60ns, max 100ns
+// <i> High Speed Mode: typical 20ns, max 40ns
+// <id> i2c_master_arch_trise
+
+#ifndef CONF_SERCOM_5_I2CM_TRISE
+#define CONF_SERCOM_5_I2CM_TRISE 215
+#endif
+
+// <q> Master SCL Low Extended Time-Out (MEXTTOEN)
+// <i> This enables the master SCL low extend time-out
+// <id> i2c_master_arch_mexttoen
+#ifndef CONF_SERCOM_5_I2CM_MEXTTOEN
+#define CONF_SERCOM_5_I2CM_MEXTTOEN 0
+#endif
+
+// <q> Slave SCL Low Extend Time-Out (SEXTTOEN)
+// <i> Enables the slave SCL low extend time-out. If SCL is cumulatively held low for greater than 25ms from the initial START to a STOP, the slave will release its clock hold if enabled and reset the internal state machine
+// <id> i2c_master_arch_sexttoen
+#ifndef CONF_SERCOM_5_I2CM_SEXTTOEN
+#define CONF_SERCOM_5_I2CM_SEXTTOEN 0
+#endif
+
+// <q> SCL Low Time-Out (LOWTOUT)
+// <i> Enables SCL low time-out. If SCL is held low for 25ms-35ms, the master will release it's clock hold
+// <id> i2c_master_arch_lowtout
+#ifndef CONF_SERCOM_5_I2CM_LOWTOUT
+#define CONF_SERCOM_5_I2CM_LOWTOUT 0
+#endif
+
+// <o> Inactive Time-Out (INACTOUT)
+// <0x0=>Disabled
+// <0x1=>5-6 SCL cycle time-out(50-60us)
+// <0x2=>10-11 SCL cycle time-out(100-110us)
+// <0x3=>20-21 SCL cycle time-out(200-210us)
+// <i> Defines if inactivity time-out should be enabled, and how long the time-out should be
+// <id> i2c_master_arch_inactout
+#ifndef CONF_SERCOM_5_I2CM_INACTOUT
+#define CONF_SERCOM_5_I2CM_INACTOUT 0x0
+#endif
+
+// <o> SDA Hold Time (SDAHOLD)
+// <0=>Disabled
+// <1=>50-100ns hold time
+// <2=>300-600ns hold time
+// <3=>400-800ns hold time
+// <i> Defines the SDA hold time with respect to the negative edge of SCL
+// <id> i2c_master_arch_sdahold
+#ifndef CONF_SERCOM_5_I2CM_SDAHOLD
+#define CONF_SERCOM_5_I2CM_SDAHOLD 0x2
+#endif
+
+// <q> Run in stand-by
+// <i> Determine if the module shall run in standby sleep mode
+// <id> i2c_master_arch_runstdby
+#ifndef CONF_SERCOM_5_I2CM_RUNSTDBY
+#define CONF_SERCOM_5_I2CM_RUNSTDBY 0
+#endif
+
+// <o> Debug Stop Mode
+// <i> Behavior of the baud-rate generator when CPU is halted by external debugger.
+// <0=>Keep running
+// <1=>Halt
+// <id> i2c_master_arch_dbgstop
+#ifndef CONF_SERCOM_5_I2CM_DEBUG_STOP_MODE
+#define CONF_SERCOM_5_I2CM_DEBUG_STOP_MODE 0
+#endif
+
+// </e>
+
+#ifndef CONF_SERCOM_5_I2CM_SPEED
+#define CONF_SERCOM_5_I2CM_SPEED 0x00 // Speed: Standard/Fast mode
+#endif
+#if CONF_SERCOM_5_I2CM_TRISE < 215 || CONF_SERCOM_5_I2CM_TRISE > 300
+//#warning Bad I2C Rise time for Standard/Fast mode, reset to 215ns
+#undef CONF_SERCOM_5_I2CM_TRISE
+#define CONF_SERCOM_5_I2CM_TRISE 215
+#endif
+
+//                  gclk_freq - (i2c_scl_freq * 10) - (gclk_freq * i2c_scl_freq * Trise)
+// BAUD + BAUDLOW = --------------------------------------------------------------------
+//                  i2c_scl_freq
+// BAUD:    register value low  [7:0]
+// BAUDLOW: register value high [15:8], only used for odd BAUD + BAUDLOW
+#define CONF_SERCOM_5_I2CM_BAUD_BAUDLOW                                                                                \
+	(((CONF_GCLK_SERCOM5_CORE_FREQUENCY - (CONF_SERCOM_5_I2CM_BAUD * 10)                                               \
+	   - (CONF_SERCOM_5_I2CM_TRISE * (CONF_SERCOM_5_I2CM_BAUD / 100) * (CONF_GCLK_SERCOM5_CORE_FREQUENCY / 10000)      \
+	      / 1000))                                                                                                     \
+	      * 10                                                                                                         \
+	  + 5)                                                                                                             \
+	 / (CONF_SERCOM_5_I2CM_BAUD * 10))
+#ifndef CONF_SERCOM_5_I2CM_BAUD_RATE
+#if CONF_SERCOM_5_I2CM_BAUD_BAUDLOW > (0xFF * 2)
+//#warning Requested I2C baudrate too low, please check
+#define CONF_SERCOM_5_I2CM_BAUD_RATE 0xFF
+#elif CONF_SERCOM_5_I2CM_BAUD_BAUDLOW <= 1
+//#warning Requested I2C baudrate too high, please check
+#define CONF_SERCOM_5_I2CM_BAUD_RATE 1
+#else
+#define CONF_SERCOM_5_I2CM_BAUD_RATE                                                                                   \
+	((CONF_SERCOM_5_I2CM_BAUD_BAUDLOW & 0x1)                                                                           \
+	     ? (CONF_SERCOM_5_I2CM_BAUD_BAUDLOW / 2) + ((CONF_SERCOM_5_I2CM_BAUD_BAUDLOW / 2 + 1) << 8)                    \
+	     : (CONF_SERCOM_5_I2CM_BAUD_BAUDLOW / 2))
+#endif
+#endif
+
+// <<< end of configuration section >>>
+
+#endif // HPL_SERCOM_CONFIG_H

ports/atmel-samd/asf4_conf/samd21/peripheral_clk_config.h

@@ -1,41 +1,13 @@
+// Derived from:
+// Create START project with using six I2C, then six ...
+// then merge all.
+
 /* Auto-generated config file peripheral_clk_config.h */
 #ifndef PERIPHERAL_CLK_CONFIG_H
 #define PERIPHERAL_CLK_CONFIG_H
 
 // <<< Use Configuration Wizard in Context Menu >>>
 
-// <y> ADC Clock Source
-// <id> adc_gclk_selection
-
-// <GCLK_CLKCTRL_GEN_GCLK0_Val"> Generic clock generator 0
-
-// <GCLK_CLKCTRL_GEN_GCLK1_Val"> Generic clock generator 1
-
-// <GCLK_CLKCTRL_GEN_GCLK2_Val"> Generic clock generator 2
-
-// <GCLK_CLKCTRL_GEN_GCLK3_Val"> Generic clock generator 3
-
-// <GCLK_CLKCTRL_GEN_GCLK4_Val"> Generic clock generator 4
-
-// <GCLK_CLKCTRL_GEN_GCLK5_Val"> Generic clock generator 5
-
-// <GCLK_CLKCTRL_GEN_GCLK6_Val"> Generic clock generator 6
-
-// <GCLK_CLKCTRL_GEN_GCLK7_Val"> Generic clock generator 7
-
-// <i> Select the clock source for ADC.
-#ifndef CONF_GCLK_ADC_SRC
-#define CONF_GCLK_ADC_SRC GCLK_CLKCTRL_GEN_GCLK0_Val
-#endif
-
-/**
- * \def CONF_GCLK_ADC_FREQUENCY
- * \brief ADC's Clock frequency
- */
-#ifndef CONF_GCLK_ADC_FREQUENCY
-#define CONF_GCLK_ADC_FREQUENCY 1000000
-#endif
-
 /**
  * \def CONF_CPU_FREQUENCY
  * \brief CPU's Clock frequency
@@ -97,7 +69,7 @@
  * \brief SERCOM0's Core Clock frequency
  */
 #ifndef CONF_GCLK_SERCOM0_CORE_FREQUENCY
-#define CONF_GCLK_SERCOM0_CORE_FREQUENCY 1000000
+#define CONF_GCLK_SERCOM0_CORE_FREQUENCY 48000000
 #endif
 
 /**
@@ -161,7 +133,7 @@
  * \brief SERCOM1's Core Clock frequency
  */
 #ifndef CONF_GCLK_SERCOM1_CORE_FREQUENCY
-#define CONF_GCLK_SERCOM1_CORE_FREQUENCY 1000000
+#define CONF_GCLK_SERCOM1_CORE_FREQUENCY 48000000
 #endif
 
 /**
@@ -225,7 +197,7 @@
  * \brief SERCOM2's Core Clock frequency
  */
 #ifndef CONF_GCLK_SERCOM2_CORE_FREQUENCY
-#define CONF_GCLK_SERCOM2_CORE_FREQUENCY 1000000
+#define CONF_GCLK_SERCOM2_CORE_FREQUENCY 48000000
 #endif
 
 /**
@@ -236,6 +208,198 @@
 #define CONF_GCLK_SERCOM2_SLOW_FREQUENCY 400000
 #endif
 
+// <y> Core Clock Source
+// <id> core_gclk_selection
+
+// <GCLK_CLKCTRL_GEN_GCLK0_Val"> Generic clock generator 0
+
+// <GCLK_CLKCTRL_GEN_GCLK1_Val"> Generic clock generator 1
+
+// <GCLK_CLKCTRL_GEN_GCLK2_Val"> Generic clock generator 2
+
+// <GCLK_CLKCTRL_GEN_GCLK3_Val"> Generic clock generator 3
+
+// <GCLK_CLKCTRL_GEN_GCLK4_Val"> Generic clock generator 4
+
+// <GCLK_CLKCTRL_GEN_GCLK5_Val"> Generic clock generator 5
+
+// <GCLK_CLKCTRL_GEN_GCLK6_Val"> Generic clock generator 6
+
+// <GCLK_CLKCTRL_GEN_GCLK7_Val"> Generic clock generator 7
+
+// <i> Select the clock source for CORE.
+#ifndef CONF_GCLK_SERCOM3_CORE_SRC
+#define CONF_GCLK_SERCOM3_CORE_SRC GCLK_CLKCTRL_GEN_GCLK0_Val
+#endif
+
+// <y> Slow Clock Source
+// <id> slow_gclk_selection
+
+// <GCLK_CLKCTRL_GEN_GCLK0_Val"> Generic clock generator 0
+
+// <GCLK_CLKCTRL_GEN_GCLK1_Val"> Generic clock generator 1
+
+// <GCLK_CLKCTRL_GEN_GCLK2_Val"> Generic clock generator 2
+
+// <GCLK_CLKCTRL_GEN_GCLK3_Val"> Generic clock generator 3
+
+// <GCLK_CLKCTRL_GEN_GCLK4_Val"> Generic clock generator 4
+
+// <GCLK_CLKCTRL_GEN_GCLK5_Val"> Generic clock generator 5
+
+// <GCLK_CLKCTRL_GEN_GCLK6_Val"> Generic clock generator 6
+
+// <GCLK_CLKCTRL_GEN_GCLK7_Val"> Generic clock generator 7
+
+// <i> Select the slow clock source.
+#ifndef CONF_GCLK_SERCOM3_SLOW_SRC
+#define CONF_GCLK_SERCOM3_SLOW_SRC GCLK_CLKCTRL_GEN_GCLK3_Val
+#endif
+
+/**
+ * \def CONF_GCLK_SERCOM3_CORE_FREQUENCY
+ * \brief SERCOM3's Core Clock frequency
+ */
+#ifndef CONF_GCLK_SERCOM3_CORE_FREQUENCY
+#define CONF_GCLK_SERCOM3_CORE_FREQUENCY 48000000
+#endif
+
+/**
+ * \def CONF_GCLK_SERCOM3_SLOW_FREQUENCY
+ * \brief SERCOM3's Slow Clock frequency
+ */
+#ifndef CONF_GCLK_SERCOM3_SLOW_FREQUENCY
+#define CONF_GCLK_SERCOM3_SLOW_FREQUENCY 400000
+#endif
+
+// <y> Core Clock Source
+// <id> core_gclk_selection
+
+// <GCLK_CLKCTRL_GEN_GCLK0_Val"> Generic clock generator 0
+
+// <GCLK_CLKCTRL_GEN_GCLK1_Val"> Generic clock generator 1
+
+// <GCLK_CLKCTRL_GEN_GCLK2_Val"> Generic clock generator 2
+
+// <GCLK_CLKCTRL_GEN_GCLK3_Val"> Generic clock generator 3
+
+// <GCLK_CLKCTRL_GEN_GCLK4_Val"> Generic clock generator 4
+
+// <GCLK_CLKCTRL_GEN_GCLK5_Val"> Generic clock generator 5
+
+// <GCLK_CLKCTRL_GEN_GCLK6_Val"> Generic clock generator 6
+
+// <GCLK_CLKCTRL_GEN_GCLK7_Val"> Generic clock generator 7
+
+// <i> Select the clock source for CORE.
+#ifndef CONF_GCLK_SERCOM4_CORE_SRC
+#define CONF_GCLK_SERCOM4_CORE_SRC GCLK_CLKCTRL_GEN_GCLK0_Val
+#endif
+
+// <y> Slow Clock Source
+// <id> slow_gclk_selection
+
+// <GCLK_CLKCTRL_GEN_GCLK0_Val"> Generic clock generator 0
+
+// <GCLK_CLKCTRL_GEN_GCLK1_Val"> Generic clock generator 1
+
+// <GCLK_CLKCTRL_GEN_GCLK2_Val"> Generic clock generator 2
+
+// <GCLK_CLKCTRL_GEN_GCLK3_Val"> Generic clock generator 3
+
+// <GCLK_CLKCTRL_GEN_GCLK4_Val"> Generic clock generator 4
+
+// <GCLK_CLKCTRL_GEN_GCLK5_Val"> Generic clock generator 5
+
+// <GCLK_CLKCTRL_GEN_GCLK6_Val"> Generic clock generator 6
+
+// <GCLK_CLKCTRL_GEN_GCLK7_Val"> Generic clock generator 7
+
+// <i> Select the slow clock source.
+#ifndef CONF_GCLK_SERCOM4_SLOW_SRC
+#define CONF_GCLK_SERCOM4_SLOW_SRC GCLK_CLKCTRL_GEN_GCLK3_Val
+#endif
+
+/**
+ * \def CONF_GCLK_SERCOM4_CORE_FREQUENCY
+ * \brief SERCOM4's Core Clock frequency
+ */
+#ifndef CONF_GCLK_SERCOM4_CORE_FREQUENCY
+#define CONF_GCLK_SERCOM4_CORE_FREQUENCY 48000000
+#endif
+
+/**
+ * \def CONF_GCLK_SERCOM4_SLOW_FREQUENCY
+ * \brief SERCOM4's Slow Clock frequency
+ */
+#ifndef CONF_GCLK_SERCOM4_SLOW_FREQUENCY
+#define CONF_GCLK_SERCOM4_SLOW_FREQUENCY 400000
+#endif
+
+// <y> Core Clock Source
+// <id> core_gclk_selection
+
+// <GCLK_CLKCTRL_GEN_GCLK0_Val"> Generic clock generator 0
+
+// <GCLK_CLKCTRL_GEN_GCLK1_Val"> Generic clock generator 1
+
+// <GCLK_CLKCTRL_GEN_GCLK2_Val"> Generic clock generator 2
+
+// <GCLK_CLKCTRL_GEN_GCLK3_Val"> Generic clock generator 3
+
+// <GCLK_CLKCTRL_GEN_GCLK4_Val"> Generic clock generator 4
+
+// <GCLK_CLKCTRL_GEN_GCLK5_Val"> Generic clock generator 5
+
+// <GCLK_CLKCTRL_GEN_GCLK6_Val"> Generic clock generator 6
+
+// <GCLK_CLKCTRL_GEN_GCLK7_Val"> Generic clock generator 7
+
+// <i> Select the clock source for CORE.
+#ifndef CONF_GCLK_SERCOM5_CORE_SRC
+#define CONF_GCLK_SERCOM5_CORE_SRC GCLK_CLKCTRL_GEN_GCLK0_Val
+#endif
+
+// <y> Slow Clock Source
+// <id> slow_gclk_selection
+
+// <GCLK_CLKCTRL_GEN_GCLK0_Val"> Generic clock generator 0
+
+// <GCLK_CLKCTRL_GEN_GCLK1_Val"> Generic clock generator 1
+
+// <GCLK_CLKCTRL_GEN_GCLK2_Val"> Generic clock generator 2
+
+// <GCLK_CLKCTRL_GEN_GCLK3_Val"> Generic clock generator 3
+
+// <GCLK_CLKCTRL_GEN_GCLK4_Val"> Generic clock generator 4
+
+// <GCLK_CLKCTRL_GEN_GCLK5_Val"> Generic clock generator 5
+
+// <GCLK_CLKCTRL_GEN_GCLK6_Val"> Generic clock generator 6
+
+// <GCLK_CLKCTRL_GEN_GCLK7_Val"> Generic clock generator 7
+
+// <i> Select the slow clock source.
+#ifndef CONF_GCLK_SERCOM5_SLOW_SRC
+#define CONF_GCLK_SERCOM5_SLOW_SRC GCLK_CLKCTRL_GEN_GCLK3_Val
+#endif
+
+/**
+ * \def CONF_GCLK_SERCOM5_CORE_FREQUENCY
+ * \brief SERCOM5's Core Clock frequency
+ */
+#ifndef CONF_GCLK_SERCOM5_CORE_FREQUENCY
+#define CONF_GCLK_SERCOM5_CORE_FREQUENCY 48000000
+#endif
+
+/**
+ * \def CONF_GCLK_SERCOM5_SLOW_FREQUENCY
+ * \brief SERCOM5's Slow Clock frequency
+ */
+#ifndef CONF_GCLK_SERCOM5_SLOW_FREQUENCY
+#define CONF_GCLK_SERCOM5_SLOW_FREQUENCY 400000
+#endif
+
 // <y> RTC Clock Source
 // <id> rtc_clk_selection
 

ports/atmel-samd/asf4_conf/samd51/hpl_gclk_config.h

@@ -3,7 +3,6 @@
 // core and main bus. GCLK1 is 48mhz based on DFLL48M which is used for USB.
 // GCLK4 also outputs the 120mhz clock for monitoring.
 
-
 /* Auto-generated config file hpl_gclk_config.h */
 #ifndef HPL_GCLK_CONFIG_H
 #define HPL_GCLK_CONFIG_H

ports/atmel-samd/asf4_conf/samd51/peripheral_clk_config.h

@@ -1,926 +1,113 @@
-/* Auto-generated config file peripheral_clk_config.h */
+// Derived from: Auto-generated config file peripheral_clk_config.h
+// Boilerplate removed.
+
 #ifndef PERIPHERAL_CLK_CONFIG_H
 #define PERIPHERAL_CLK_CONFIG_H
 
-// <<< Use Configuration Wizard in Context Menu >>>
+// ADC
-
-// <y> ADC Clock Source
-// <id> adc_gclk_selection
-
-// <GCLK_PCHCTRL_GEN_GCLK0_Val"> Generic clock generator 0
-
-// <GCLK_PCHCTRL_GEN_GCLK1_Val"> Generic clock generator 1
-
-// <GCLK_PCHCTRL_GEN_GCLK2_Val"> Generic clock generator 2
-
-// <GCLK_PCHCTRL_GEN_GCLK3_Val"> Generic clock generator 3
-
-// <GCLK_PCHCTRL_GEN_GCLK4_Val"> Generic clock generator 4
-
-// <GCLK_PCHCTRL_GEN_GCLK5_Val"> Generic clock generator 5
-
-// <GCLK_PCHCTRL_GEN_GCLK6_Val"> Generic clock generator 6
-
-// <GCLK_PCHCTRL_GEN_GCLK7_Val"> Generic clock generator 7
-
-// <GCLK_PCHCTRL_GEN_GCLK8_Val"> Generic clock generator 8
-
-// <GCLK_PCHCTRL_GEN_GCLK9_Val"> Generic clock generator 9
-
-// <GCLK_PCHCTRL_GEN_GCLK10_Val"> Generic clock generator 10
-
-// <GCLK_PCHCTRL_GEN_GCLK11_Val"> Generic clock generator 11
-
-// <i> Select the clock source for ADC.
-#ifndef CONF_GCLK_ADC0_SRC
 #define CONF_GCLK_ADC0_SRC GCLK_PCHCTRL_GEN_GCLK0_Val
-#endif
-
-/**
- * \def CONF_GCLK_ADC0_FREQUENCY
- * \brief ADC0's Clock frequency
- */
-#ifndef CONF_GCLK_ADC0_FREQUENCY
 #define CONF_GCLK_ADC0_FREQUENCY 120000000
-#endif
 
-// <y> DAC Clock Source
+// DAC
-
-// <GCLK_PCHCTRL_GEN_GCLK0_Val"> Generic clock generator 0
-
-// <GCLK_PCHCTRL_GEN_GCLK1_Val"> Generic clock generator 1
-
-// <GCLK_PCHCTRL_GEN_GCLK2_Val"> Generic clock generator 2
-
-// <GCLK_PCHCTRL_GEN_GCLK3_Val"> Generic clock generator 3
-
-// <GCLK_PCHCTRL_GEN_GCLK4_Val"> Generic clock generator 4
-
-// <GCLK_PCHCTRL_GEN_GCLK5_Val"> Generic clock generator 5
-
-// <GCLK_PCHCTRL_GEN_GCLK6_Val"> Generic clock generator 6
-
-// <GCLK_PCHCTRL_GEN_GCLK7_Val"> Generic clock generator 7
-
-// <GCLK_PCHCTRL_GEN_GCLK8_Val"> Generic clock generator 8
-
-// <GCLK_PCHCTRL_GEN_GCLK9_Val"> Generic clock generator 9
-
-// <GCLK_PCHCTRL_GEN_GCLK10_Val"> Generic clock generator 10
-
-// <GCLK_PCHCTRL_GEN_GCLK11_Val"> Generic clock generator 11
-
-// <id> dac_gclk_selection
-// <i> Select the clock source for DAC.
-#ifndef CONF_GCLK_DAC_SRC
 #define CONF_GCLK_DAC_SRC GCLK_PCHCTRL_GEN_GCLK0_Val
-#endif
-
-/**
- * \def CONF_GCLK_DAC_FREQUENCY
- * \brief DAC's Clock frequency
- */
-#ifndef CONF_GCLK_DAC_FREQUENCY
 #define CONF_GCLK_DAC_FREQUENCY 120000000
-#endif
 
-// <y> EVSYS Channel 0 Clock Source
+// EVSYS
-// <id> evsys_clk_selection_0
-
-// <GCLK_PCHCTRL_GEN_GCLK0_Val"> Generic clock generator 0
-
-// <GCLK_PCHCTRL_GEN_GCLK1_Val"> Generic clock generator 1
-
-// <GCLK_PCHCTRL_GEN_GCLK2_Val"> Generic clock generator 2
-
-// <GCLK_PCHCTRL_GEN_GCLK3_Val"> Generic clock generator 3
-
-// <GCLK_PCHCTRL_GEN_GCLK4_Val"> Generic clock generator 4
-
-// <GCLK_PCHCTRL_GEN_GCLK5_Val"> Generic clock generator 5
-
-// <GCLK_PCHCTRL_GEN_GCLK6_Val"> Generic clock generator 6
-
-// <GCLK_PCHCTRL_GEN_GCLK7_Val"> Generic clock generator 7
-
-// <GCLK_PCHCTRL_GEN_GCLK8_Val"> Generic clock generator 8
-
-// <GCLK_PCHCTRL_GEN_GCLK9_Val"> Generic clock generator 9
-
-// <GCLK_PCHCTRL_GEN_GCLK10_Val"> Generic clock generator 10
-
-// <GCLK_PCHCTRL_GEN_GCLK11_Val"> Generic clock generator 11
-
-// <i> Select the clock source for channel 0.
-#ifndef CONF_GCLK_EVSYS_CHANNEL_0_SRC
 #define CONF_GCLK_EVSYS_CHANNEL_0_SRC GCLK_PCHCTRL_GEN_GCLK0_Val
-#endif
-
-/**
- * \def CONF_GCLK_EVSYS_CHANNEL_0_FREQUENCY
- * \brief EVSYS's Clock frequency
- */
-
-#ifndef CONF_GCLK_EVSYS_CHANNEL_0_FREQUENCY
 #define CONF_GCLK_EVSYS_CHANNEL_0_FREQUENCY 120000000.0
-#endif
 
-// <y> EVSYS Channel 1 Clock Source
-// <id> evsys_clk_selection_1
-
-// <GCLK_PCHCTRL_GEN_GCLK0_Val"> Generic clock generator 0
-
-// <GCLK_PCHCTRL_GEN_GCLK1_Val"> Generic clock generator 1
-
-// <GCLK_PCHCTRL_GEN_GCLK2_Val"> Generic clock generator 2
-
-// <GCLK_PCHCTRL_GEN_GCLK3_Val"> Generic clock generator 3
-
-// <GCLK_PCHCTRL_GEN_GCLK4_Val"> Generic clock generator 4
-
-// <GCLK_PCHCTRL_GEN_GCLK5_Val"> Generic clock generator 5
-
-// <GCLK_PCHCTRL_GEN_GCLK6_Val"> Generic clock generator 6
-
-// <GCLK_PCHCTRL_GEN_GCLK7_Val"> Generic clock generator 7
-
-// <GCLK_PCHCTRL_GEN_GCLK8_Val"> Generic clock generator 8
-
-// <GCLK_PCHCTRL_GEN_GCLK9_Val"> Generic clock generator 9
-
-// <GCLK_PCHCTRL_GEN_GCLK10_Val"> Generic clock generator 10
-
-// <GCLK_PCHCTRL_GEN_GCLK11_Val"> Generic clock generator 11
-
-// <i> Select the clock source for channel 1.
-#ifndef CONF_GCLK_EVSYS_CHANNEL_1_SRC
 #define CONF_GCLK_EVSYS_CHANNEL_1_SRC GCLK_PCHCTRL_GEN_GCLK0_Val
-#endif
-
-/**
- * \def CONF_GCLK_EVSYS_CHANNEL_1_FREQUENCY
- * \brief EVSYS's Clock frequency
- */
-
-#ifndef CONF_GCLK_EVSYS_CHANNEL_1_FREQUENCY
 #define CONF_GCLK_EVSYS_CHANNEL_1_FREQUENCY 120000000.0
-#endif
 
-// <y> EVSYS Channel 2 Clock Source
-// <id> evsys_clk_selection_2
-
-// <GCLK_PCHCTRL_GEN_GCLK0_Val"> Generic clock generator 0
-
-// <GCLK_PCHCTRL_GEN_GCLK1_Val"> Generic clock generator 1
-
-// <GCLK_PCHCTRL_GEN_GCLK2_Val"> Generic clock generator 2
-
-// <GCLK_PCHCTRL_GEN_GCLK3_Val"> Generic clock generator 3
-
-// <GCLK_PCHCTRL_GEN_GCLK4_Val"> Generic clock generator 4
-
-// <GCLK_PCHCTRL_GEN_GCLK5_Val"> Generic clock generator 5
-
-// <GCLK_PCHCTRL_GEN_GCLK6_Val"> Generic clock generator 6
-
-// <GCLK_PCHCTRL_GEN_GCLK7_Val"> Generic clock generator 7
-
-// <GCLK_PCHCTRL_GEN_GCLK8_Val"> Generic clock generator 8
-
-// <GCLK_PCHCTRL_GEN_GCLK9_Val"> Generic clock generator 9
-
-// <GCLK_PCHCTRL_GEN_GCLK10_Val"> Generic clock generator 10
-
-// <GCLK_PCHCTRL_GEN_GCLK11_Val"> Generic clock generator 11
-
-// <i> Select the clock source for channel 2.
-#ifndef CONF_GCLK_EVSYS_CHANNEL_2_SRC
 #define CONF_GCLK_EVSYS_CHANNEL_2_SRC GCLK_PCHCTRL_GEN_GCLK0_Val
-#endif
-
-/**
- * \def CONF_GCLK_EVSYS_CHANNEL_2_FREQUENCY
- * \brief EVSYS's Clock frequency
- */
-
-#ifndef CONF_GCLK_EVSYS_CHANNEL_2_FREQUENCY
 #define CONF_GCLK_EVSYS_CHANNEL_2_FREQUENCY 120000000.0
-#endif
 
-// <y> EVSYS Channel 3 Clock Source
-// <id> evsys_clk_selection_3
-
-// <GCLK_PCHCTRL_GEN_GCLK0_Val"> Generic clock generator 0
-
-// <GCLK_PCHCTRL_GEN_GCLK1_Val"> Generic clock generator 1
-
-// <GCLK_PCHCTRL_GEN_GCLK2_Val"> Generic clock generator 2
-
-// <GCLK_PCHCTRL_GEN_GCLK3_Val"> Generic clock generator 3
-
-// <GCLK_PCHCTRL_GEN_GCLK4_Val"> Generic clock generator 4
-
-// <GCLK_PCHCTRL_GEN_GCLK5_Val"> Generic clock generator 5
-
-// <GCLK_PCHCTRL_GEN_GCLK6_Val"> Generic clock generator 6
-
-// <GCLK_PCHCTRL_GEN_GCLK7_Val"> Generic clock generator 7
-
-// <GCLK_PCHCTRL_GEN_GCLK8_Val"> Generic clock generator 8
-
-// <GCLK_PCHCTRL_GEN_GCLK9_Val"> Generic clock generator 9
-
-// <GCLK_PCHCTRL_GEN_GCLK10_Val"> Generic clock generator 10
-
-// <GCLK_PCHCTRL_GEN_GCLK11_Val"> Generic clock generator 11
-
-// <i> Select the clock source for channel 3.
-#ifndef CONF_GCLK_EVSYS_CHANNEL_3_SRC
 #define CONF_GCLK_EVSYS_CHANNEL_3_SRC GCLK_PCHCTRL_GEN_GCLK0_Val
-#endif
-
-/**
- * \def CONF_GCLK_EVSYS_CHANNEL_3_FREQUENCY
- * \brief EVSYS's Clock frequency
- */
-
-#ifndef CONF_GCLK_EVSYS_CHANNEL_3_FREQUENCY
 #define CONF_GCLK_EVSYS_CHANNEL_3_FREQUENCY 120000000.0
-#endif
 
-// <y> EVSYS Channel 4 Clock Source
-// <id> evsys_clk_selection_4
-
-// <GCLK_PCHCTRL_GEN_GCLK0_Val"> Generic clock generator 0
-
-// <GCLK_PCHCTRL_GEN_GCLK1_Val"> Generic clock generator 1
-
-// <GCLK_PCHCTRL_GEN_GCLK2_Val"> Generic clock generator 2
-
-// <GCLK_PCHCTRL_GEN_GCLK3_Val"> Generic clock generator 3
-
-// <GCLK_PCHCTRL_GEN_GCLK4_Val"> Generic clock generator 4
-
-// <GCLK_PCHCTRL_GEN_GCLK5_Val"> Generic clock generator 5
-
-// <GCLK_PCHCTRL_GEN_GCLK6_Val"> Generic clock generator 6
-
-// <GCLK_PCHCTRL_GEN_GCLK7_Val"> Generic clock generator 7
-
-// <GCLK_PCHCTRL_GEN_GCLK8_Val"> Generic clock generator 8
-
-// <GCLK_PCHCTRL_GEN_GCLK9_Val"> Generic clock generator 9
-
-// <GCLK_PCHCTRL_GEN_GCLK10_Val"> Generic clock generator 10
-
-// <GCLK_PCHCTRL_GEN_GCLK11_Val"> Generic clock generator 11
-
-// <i> Select the clock source for channel 4.
-#ifndef CONF_GCLK_EVSYS_CHANNEL_4_SRC
 #define CONF_GCLK_EVSYS_CHANNEL_4_SRC GCLK_PCHCTRL_GEN_GCLK0_Val
-#endif
-
-/**
- * \def CONF_GCLK_EVSYS_CHANNEL_4_FREQUENCY
- * \brief EVSYS's Clock frequency
- */
-
-#ifndef CONF_GCLK_EVSYS_CHANNEL_4_FREQUENCY
 #define CONF_GCLK_EVSYS_CHANNEL_4_FREQUENCY 120000000.0
-#endif
 
-// <y> EVSYS Channel 5 Clock Source
-// <id> evsys_clk_selection_5
-
-// <GCLK_PCHCTRL_GEN_GCLK0_Val"> Generic clock generator 0
-
-// <GCLK_PCHCTRL_GEN_GCLK1_Val"> Generic clock generator 1
-
-// <GCLK_PCHCTRL_GEN_GCLK2_Val"> Generic clock generator 2
-
-// <GCLK_PCHCTRL_GEN_GCLK3_Val"> Generic clock generator 3
-
-// <GCLK_PCHCTRL_GEN_GCLK4_Val"> Generic clock generator 4
-
-// <GCLK_PCHCTRL_GEN_GCLK5_Val"> Generic clock generator 5
-
-// <GCLK_PCHCTRL_GEN_GCLK6_Val"> Generic clock generator 6
-
-// <GCLK_PCHCTRL_GEN_GCLK7_Val"> Generic clock generator 7
-
-// <GCLK_PCHCTRL_GEN_GCLK8_Val"> Generic clock generator 8
-
-// <GCLK_PCHCTRL_GEN_GCLK9_Val"> Generic clock generator 9
-
-// <GCLK_PCHCTRL_GEN_GCLK10_Val"> Generic clock generator 10
-
-// <GCLK_PCHCTRL_GEN_GCLK11_Val"> Generic clock generator 11
-
-// <i> Select the clock source for channel 5.
-#ifndef CONF_GCLK_EVSYS_CHANNEL_5_SRC
 #define CONF_GCLK_EVSYS_CHANNEL_5_SRC GCLK_PCHCTRL_GEN_GCLK0_Val
-#endif
-
-/**
- * \def CONF_GCLK_EVSYS_CHANNEL_5_FREQUENCY
- * \brief EVSYS's Clock frequency
- */
-
-#ifndef CONF_GCLK_EVSYS_CHANNEL_5_FREQUENCY
 #define CONF_GCLK_EVSYS_CHANNEL_5_FREQUENCY 120000000.0
-#endif
 
-// <y> EVSYS Channel 6 Clock Source
-// <id> evsys_clk_selection_6
-
-// <GCLK_PCHCTRL_GEN_GCLK0_Val"> Generic clock generator 0
-
-// <GCLK_PCHCTRL_GEN_GCLK1_Val"> Generic clock generator 1
-
-// <GCLK_PCHCTRL_GEN_GCLK2_Val"> Generic clock generator 2
-
-// <GCLK_PCHCTRL_GEN_GCLK3_Val"> Generic clock generator 3
-
-// <GCLK_PCHCTRL_GEN_GCLK4_Val"> Generic clock generator 4
-
-// <GCLK_PCHCTRL_GEN_GCLK5_Val"> Generic clock generator 5
-
-// <GCLK_PCHCTRL_GEN_GCLK6_Val"> Generic clock generator 6
-
-// <GCLK_PCHCTRL_GEN_GCLK7_Val"> Generic clock generator 7
-
-// <GCLK_PCHCTRL_GEN_GCLK8_Val"> Generic clock generator 8
-
-// <GCLK_PCHCTRL_GEN_GCLK9_Val"> Generic clock generator 9
-
-// <GCLK_PCHCTRL_GEN_GCLK10_Val"> Generic clock generator 10
-
-// <GCLK_PCHCTRL_GEN_GCLK11_Val"> Generic clock generator 11
-
-// <i> Select the clock source for channel 6.
-#ifndef CONF_GCLK_EVSYS_CHANNEL_6_SRC
 #define CONF_GCLK_EVSYS_CHANNEL_6_SRC GCLK_PCHCTRL_GEN_GCLK0_Val
-#endif
-
-/**
- * \def CONF_GCLK_EVSYS_CHANNEL_6_FREQUENCY
- * \brief EVSYS's Clock frequency
- */
-
-#ifndef CONF_GCLK_EVSYS_CHANNEL_6_FREQUENCY
 #define CONF_GCLK_EVSYS_CHANNEL_6_FREQUENCY 120000000.0
-#endif
 
-// <y> EVSYS Channel 7 Clock Source
-// <id> evsys_clk_selection_7
-
-// <GCLK_PCHCTRL_GEN_GCLK0_Val"> Generic clock generator 0
-
-// <GCLK_PCHCTRL_GEN_GCLK1_Val"> Generic clock generator 1
-
-// <GCLK_PCHCTRL_GEN_GCLK2_Val"> Generic clock generator 2
-
-// <GCLK_PCHCTRL_GEN_GCLK3_Val"> Generic clock generator 3
-
-// <GCLK_PCHCTRL_GEN_GCLK4_Val"> Generic clock generator 4
-
-// <GCLK_PCHCTRL_GEN_GCLK5_Val"> Generic clock generator 5
-
-// <GCLK_PCHCTRL_GEN_GCLK6_Val"> Generic clock generator 6
-
-// <GCLK_PCHCTRL_GEN_GCLK7_Val"> Generic clock generator 7
-
-// <GCLK_PCHCTRL_GEN_GCLK8_Val"> Generic clock generator 8
-
-// <GCLK_PCHCTRL_GEN_GCLK9_Val"> Generic clock generator 9
-
-// <GCLK_PCHCTRL_GEN_GCLK10_Val"> Generic clock generator 10
-
-// <GCLK_PCHCTRL_GEN_GCLK11_Val"> Generic clock generator 11
-
-// <i> Select the clock source for channel 7.
-#ifndef CONF_GCLK_EVSYS_CHANNEL_7_SRC
 #define CONF_GCLK_EVSYS_CHANNEL_7_SRC GCLK_PCHCTRL_GEN_GCLK0_Val
-#endif
-
-/**
- * \def CONF_GCLK_EVSYS_CHANNEL_7_FREQUENCY
- * \brief EVSYS's Clock frequency
- */
-
-#ifndef CONF_GCLK_EVSYS_CHANNEL_7_FREQUENCY
 #define CONF_GCLK_EVSYS_CHANNEL_7_FREQUENCY 120000000.0
-#endif
 
-// <y> EVSYS Channel 8 Clock Source
-// <id> evsys_clk_selection_8
-
-// <GCLK_PCHCTRL_GEN_GCLK0_Val"> Generic clock generator 0
-
-// <GCLK_PCHCTRL_GEN_GCLK1_Val"> Generic clock generator 1
-
-// <GCLK_PCHCTRL_GEN_GCLK2_Val"> Generic clock generator 2
-
-// <GCLK_PCHCTRL_GEN_GCLK3_Val"> Generic clock generator 3
-
-// <GCLK_PCHCTRL_GEN_GCLK4_Val"> Generic clock generator 4
-
-// <GCLK_PCHCTRL_GEN_GCLK5_Val"> Generic clock generator 5
-
-// <GCLK_PCHCTRL_GEN_GCLK6_Val"> Generic clock generator 6
-
-// <GCLK_PCHCTRL_GEN_GCLK7_Val"> Generic clock generator 7
-
-// <GCLK_PCHCTRL_GEN_GCLK8_Val"> Generic clock generator 8
-
-// <GCLK_PCHCTRL_GEN_GCLK9_Val"> Generic clock generator 9
-
-// <GCLK_PCHCTRL_GEN_GCLK10_Val"> Generic clock generator 10
-
-// <GCLK_PCHCTRL_GEN_GCLK11_Val"> Generic clock generator 11
-
-// <i> Select the clock source for channel 8.
-#ifndef CONF_GCLK_EVSYS_CHANNEL_8_SRC
 #define CONF_GCLK_EVSYS_CHANNEL_8_SRC GCLK_PCHCTRL_GEN_GCLK0_Val
-#endif
-
-/**
- * \def CONF_GCLK_EVSYS_CHANNEL_8_FREQUENCY
- * \brief EVSYS's Clock frequency
- */
-
-#ifndef CONF_GCLK_EVSYS_CHANNEL_8_FREQUENCY
 #define CONF_GCLK_EVSYS_CHANNEL_8_FREQUENCY 120000000.0
-#endif
 
-// <y> EVSYS Channel 9 Clock Source
-// <id> evsys_clk_selection_9
-
-// <GCLK_PCHCTRL_GEN_GCLK0_Val"> Generic clock generator 0
-
-// <GCLK_PCHCTRL_GEN_GCLK1_Val"> Generic clock generator 1
-
-// <GCLK_PCHCTRL_GEN_GCLK2_Val"> Generic clock generator 2
-
-// <GCLK_PCHCTRL_GEN_GCLK3_Val"> Generic clock generator 3
-
-// <GCLK_PCHCTRL_GEN_GCLK4_Val"> Generic clock generator 4
-
-// <GCLK_PCHCTRL_GEN_GCLK5_Val"> Generic clock generator 5
-
-// <GCLK_PCHCTRL_GEN_GCLK6_Val"> Generic clock generator 6
-
-// <GCLK_PCHCTRL_GEN_GCLK7_Val"> Generic clock generator 7
-
-// <GCLK_PCHCTRL_GEN_GCLK8_Val"> Generic clock generator 8
-
-// <GCLK_PCHCTRL_GEN_GCLK9_Val"> Generic clock generator 9
-
-// <GCLK_PCHCTRL_GEN_GCLK10_Val"> Generic clock generator 10
-
-// <GCLK_PCHCTRL_GEN_GCLK11_Val"> Generic clock generator 11
-
-// <i> Select the clock source for channel 9.
-#ifndef CONF_GCLK_EVSYS_CHANNEL_9_SRC
 #define CONF_GCLK_EVSYS_CHANNEL_9_SRC GCLK_PCHCTRL_GEN_GCLK0_Val
-#endif
-
-/**
- * \def CONF_GCLK_EVSYS_CHANNEL_9_FREQUENCY
- * \brief EVSYS's Clock frequency
- */
-
-#ifndef CONF_GCLK_EVSYS_CHANNEL_9_FREQUENCY
 #define CONF_GCLK_EVSYS_CHANNEL_9_FREQUENCY 120000000.0
-#endif
 
-// <y> EVSYS Channel 10 Clock Source
-// <id> evsys_clk_selection_10
-
-// <GCLK_PCHCTRL_GEN_GCLK0_Val"> Generic clock generator 0
-
-// <GCLK_PCHCTRL_GEN_GCLK1_Val"> Generic clock generator 1
-
-// <GCLK_PCHCTRL_GEN_GCLK2_Val"> Generic clock generator 2
-
-// <GCLK_PCHCTRL_GEN_GCLK3_Val"> Generic clock generator 3
-
-// <GCLK_PCHCTRL_GEN_GCLK4_Val"> Generic clock generator 4
-
-// <GCLK_PCHCTRL_GEN_GCLK5_Val"> Generic clock generator 5
-
-// <GCLK_PCHCTRL_GEN_GCLK6_Val"> Generic clock generator 6
-
-// <GCLK_PCHCTRL_GEN_GCLK7_Val"> Generic clock generator 7
-
-// <GCLK_PCHCTRL_GEN_GCLK8_Val"> Generic clock generator 8
-
-// <GCLK_PCHCTRL_GEN_GCLK9_Val"> Generic clock generator 9
-
-// <GCLK_PCHCTRL_GEN_GCLK10_Val"> Generic clock generator 10
-
-// <GCLK_PCHCTRL_GEN_GCLK11_Val"> Generic clock generator 11
-
-// <i> Select the clock source for channel 10.
-#ifndef CONF_GCLK_EVSYS_CHANNEL_10_SRC
 #define CONF_GCLK_EVSYS_CHANNEL_10_SRC GCLK_PCHCTRL_GEN_GCLK0_Val
-#endif
-
-/**
- * \def CONF_GCLK_EVSYS_CHANNEL_10_FREQUENCY
- * \brief EVSYS's Clock frequency
- */
-
-#ifndef CONF_GCLK_EVSYS_CHANNEL_10_FREQUENCY
 #define CONF_GCLK_EVSYS_CHANNEL_10_FREQUENCY 120000000.0
-#endif
 
-// <y> EVSYS Channel 11 Clock Source
-// <id> evsys_clk_selection_11
-
-// <GCLK_PCHCTRL_GEN_GCLK0_Val"> Generic clock generator 0
-
-// <GCLK_PCHCTRL_GEN_GCLK1_Val"> Generic clock generator 1
-
-// <GCLK_PCHCTRL_GEN_GCLK2_Val"> Generic clock generator 2
-
-// <GCLK_PCHCTRL_GEN_GCLK3_Val"> Generic clock generator 3
-
-// <GCLK_PCHCTRL_GEN_GCLK4_Val"> Generic clock generator 4
-
-// <GCLK_PCHCTRL_GEN_GCLK5_Val"> Generic clock generator 5
-
-// <GCLK_PCHCTRL_GEN_GCLK6_Val"> Generic clock generator 6
-
-// <GCLK_PCHCTRL_GEN_GCLK7_Val"> Generic clock generator 7
-
-// <GCLK_PCHCTRL_GEN_GCLK8_Val"> Generic clock generator 8
-
-// <GCLK_PCHCTRL_GEN_GCLK9_Val"> Generic clock generator 9
-
-// <GCLK_PCHCTRL_GEN_GCLK10_Val"> Generic clock generator 10
-
-// <GCLK_PCHCTRL_GEN_GCLK11_Val"> Generic clock generator 11
-
-// <i> Select the clock source for channel 11.
-#ifndef CONF_GCLK_EVSYS_CHANNEL_11_SRC
 #define CONF_GCLK_EVSYS_CHANNEL_11_SRC GCLK_PCHCTRL_GEN_GCLK0_Val
-#endif
-
-/**
- * \def CONF_GCLK_EVSYS_CHANNEL_11_FREQUENCY
- * \brief EVSYS's Clock frequency
- */
-
-#ifndef CONF_GCLK_EVSYS_CHANNEL_11_FREQUENCY
 #define CONF_GCLK_EVSYS_CHANNEL_11_FREQUENCY 120000000.0
-#endif
 
-/**
+// CPU: 120 MHz
- * \def CONF_CPU_FREQUENCY
- * \brief CPU's Clock frequency
- */
-#ifndef CONF_CPU_FREQUENCY
 #define CONF_CPU_FREQUENCY 120000000
-#endif
 
-// <y> RTC Clock Source
+// RTC
-// <id> rtc_clk_selection
-// <RTC_CLOCK_SOURCE"> RTC source
-// <i> Select the clock source for RTC.
-#ifndef CONF_GCLK_RTC_SRC
 #define CONF_GCLK_RTC_SRC RTC_CLOCK_SOURCE
-#endif
-
-/**
- * \def CONF_GCLK_RTC_FREQUENCY
- * \brief RTC's Clock frequency
- */
-#ifndef CONF_GCLK_RTC_FREQUENCY
 #define CONF_GCLK_RTC_FREQUENCY 1024
-#endif
 
-// <y> Core Clock Source
-// <id> core_gclk_selection
 
-// <GCLK_PCHCTRL_GEN_GCLK0_Val"> Generic clock generator 0
+// SERCOM
+// Use 48 MHz clock for CORE, and 32kHz clock for SLOW.
+// 120 MHz is too fast for CORE.
+// Slow is only needed for SMBus, it appears.
 
-// <GCLK_PCHCTRL_GEN_GCLK1_Val"> Generic clock generator 1
+#define CONF_GCLK_SERCOM0_CORE_SRC GCLK_PCHCTRL_GEN_GCLK1_Val
-
-// <GCLK_PCHCTRL_GEN_GCLK2_Val"> Generic clock generator 2
-
-// <GCLK_PCHCTRL_GEN_GCLK3_Val"> Generic clock generator 3
-
-// <GCLK_PCHCTRL_GEN_GCLK4_Val"> Generic clock generator 4
-
-// <GCLK_PCHCTRL_GEN_GCLK5_Val"> Generic clock generator 5
-
-// <GCLK_PCHCTRL_GEN_GCLK6_Val"> Generic clock generator 6
-
-// <GCLK_PCHCTRL_GEN_GCLK7_Val"> Generic clock generator 7
-
-// <GCLK_PCHCTRL_GEN_GCLK8_Val"> Generic clock generator 8
-
-// <GCLK_PCHCTRL_GEN_GCLK9_Val"> Generic clock generator 9
-
-// <GCLK_PCHCTRL_GEN_GCLK10_Val"> Generic clock generator 10
-
-// <GCLK_PCHCTRL_GEN_GCLK11_Val"> Generic clock generator 11
-
-// <i> Select the clock source for CORE.
-#ifndef CONF_GCLK_SERCOM0_CORE_SRC
-#define CONF_GCLK_SERCOM0_CORE_SRC GCLK_PCHCTRL_GEN_GCLK0_Val
-#endif
-
-// <y> Slow Clock Source
-// <id> slow_gclk_selection
-
-// <GCLK_PCHCTRL_GEN_GCLK0_Val"> Generic clock generator 0
-
-// <GCLK_PCHCTRL_GEN_GCLK1_Val"> Generic clock generator 1
-
-// <GCLK_PCHCTRL_GEN_GCLK2_Val"> Generic clock generator 2
-
-// <GCLK_PCHCTRL_GEN_GCLK3_Val"> Generic clock generator 3
-
-// <GCLK_PCHCTRL_GEN_GCLK4_Val"> Generic clock generator 4
-
-// <GCLK_PCHCTRL_GEN_GCLK5_Val"> Generic clock generator 5
-
-// <GCLK_PCHCTRL_GEN_GCLK6_Val"> Generic clock generator 6
-
-// <GCLK_PCHCTRL_GEN_GCLK7_Val"> Generic clock generator 7
-
-// <GCLK_PCHCTRL_GEN_GCLK8_Val"> Generic clock generator 8
-
-// <GCLK_PCHCTRL_GEN_GCLK9_Val"> Generic clock generator 9
-
-// <GCLK_PCHCTRL_GEN_GCLK10_Val"> Generic clock generator 10
-
-// <GCLK_PCHCTRL_GEN_GCLK11_Val"> Generic clock generator 11
-
-// <i> Select the slow clock source.
-#ifndef CONF_GCLK_SERCOM0_SLOW_SRC
 #define CONF_GCLK_SERCOM0_SLOW_SRC GCLK_PCHCTRL_GEN_GCLK3_Val
-#endif
+#define CONF_GCLK_SERCOM0_CORE_FREQUENCY 48000000
-
-/**
- * \def CONF_GCLK_SERCOM0_CORE_FREQUENCY
- * \brief SERCOM0's Core Clock frequency
- */
-#ifndef CONF_GCLK_SERCOM0_CORE_FREQUENCY
-#define CONF_GCLK_SERCOM0_CORE_FREQUENCY 12000000
-#endif
-
-/**
- * \def CONF_GCLK_SERCOM0_SLOW_FREQUENCY
- * \brief SERCOM0's Slow Clock frequency
- */
-#ifndef CONF_GCLK_SERCOM0_SLOW_FREQUENCY
 #define CONF_GCLK_SERCOM0_SLOW_FREQUENCY 32768
-#endif
 
-// <y> Core Clock Source
+#define CONF_GCLK_SERCOM1_CORE_SRC GCLK_PCHCTRL_GEN_GCLK1_Val
-// <id> core_gclk_selection
-
-// <GCLK_PCHCTRL_GEN_GCLK0_Val"> Generic clock generator 0
-
-// <GCLK_PCHCTRL_GEN_GCLK1_Val"> Generic clock generator 1
-
-// <GCLK_PCHCTRL_GEN_GCLK2_Val"> Generic clock generator 2
-
-// <GCLK_PCHCTRL_GEN_GCLK3_Val"> Generic clock generator 3
-
-// <GCLK_PCHCTRL_GEN_GCLK4_Val"> Generic clock generator 4
-
-// <GCLK_PCHCTRL_GEN_GCLK5_Val"> Generic clock generator 5
-
-// <GCLK_PCHCTRL_GEN_GCLK6_Val"> Generic clock generator 6
-
-// <GCLK_PCHCTRL_GEN_GCLK7_Val"> Generic clock generator 7
-
-// <GCLK_PCHCTRL_GEN_GCLK8_Val"> Generic clock generator 8
-
-// <GCLK_PCHCTRL_GEN_GCLK9_Val"> Generic clock generator 9
-
-// <GCLK_PCHCTRL_GEN_GCLK10_Val"> Generic clock generator 10
-
-// <GCLK_PCHCTRL_GEN_GCLK11_Val"> Generic clock generator 11
-
-// <i> Select the clock source for CORE.
-#ifndef CONF_GCLK_SERCOM0_CORE_SRC
-#define CONF_GCLK_SERCOM0_CORE_SRC GCLK_PCHCTRL_GEN_GCLK0_Val
-#endif
-
-// <y> Slow Clock Source
-// <id> slow_gclk_selection
-
-// <GCLK_PCHCTRL_GEN_GCLK0_Val"> Generic clock generator 0
-
-// <GCLK_PCHCTRL_GEN_GCLK1_Val"> Generic clock generator 1
-
-// <GCLK_PCHCTRL_GEN_GCLK2_Val"> Generic clock generator 2
-
-// <GCLK_PCHCTRL_GEN_GCLK3_Val"> Generic clock generator 3
-
-// <GCLK_PCHCTRL_GEN_GCLK4_Val"> Generic clock generator 4
-
-// <GCLK_PCHCTRL_GEN_GCLK5_Val"> Generic clock generator 5
-
-// <GCLK_PCHCTRL_GEN_GCLK6_Val"> Generic clock generator 6
-
-// <GCLK_PCHCTRL_GEN_GCLK7_Val"> Generic clock generator 7
-
-// <GCLK_PCHCTRL_GEN_GCLK8_Val"> Generic clock generator 8
-
-// <GCLK_PCHCTRL_GEN_GCLK9_Val"> Generic clock generator 9
-
-// <GCLK_PCHCTRL_GEN_GCLK10_Val"> Generic clock generator 10
-
-// <GCLK_PCHCTRL_GEN_GCLK11_Val"> Generic clock generator 11
-
-// <i> Select the slow clock source.
-#ifndef CONF_GCLK_SERCOM0_SLOW_SRC
-#define CONF_GCLK_SERCOM0_SLOW_SRC GCLK_PCHCTRL_GEN_GCLK3_Val
-#endif
-
-/**
- * \def CONF_GCLK_SERCOM0_CORE_FREQUENCY
- * \brief SERCOM0's Core Clock frequency
- */
-#ifndef CONF_GCLK_SERCOM0_CORE_FREQUENCY
-#define CONF_GCLK_SERCOM0_CORE_FREQUENCY 12000000
-#endif
-
-/**
- * \def CONF_GCLK_SERCOM0_SLOW_FREQUENCY
- * \brief SERCOM0's Slow Clock frequency
- */
-#ifndef CONF_GCLK_SERCOM0_SLOW_FREQUENCY
-#define CONF_GCLK_SERCOM0_SLOW_FREQUENCY 32768
-#endif
-
-// <y> Core Clock Source
-// <id> core_gclk_selection
-
-// <GCLK_PCHCTRL_GEN_GCLK0_Val"> Generic clock generator 0
-
-// <GCLK_PCHCTRL_GEN_GCLK1_Val"> Generic clock generator 1
-
-// <GCLK_PCHCTRL_GEN_GCLK2_Val"> Generic clock generator 2
-
-// <GCLK_PCHCTRL_GEN_GCLK3_Val"> Generic clock generator 3
-
-// <GCLK_PCHCTRL_GEN_GCLK4_Val"> Generic clock generator 4
-
-// <GCLK_PCHCTRL_GEN_GCLK5_Val"> Generic clock generator 5
-
-// <GCLK_PCHCTRL_GEN_GCLK6_Val"> Generic clock generator 6
-
-// <GCLK_PCHCTRL_GEN_GCLK7_Val"> Generic clock generator 7
-
-// <GCLK_PCHCTRL_GEN_GCLK8_Val"> Generic clock generator 8
-
-// <GCLK_PCHCTRL_GEN_GCLK9_Val"> Generic clock generator 9
-
-// <GCLK_PCHCTRL_GEN_GCLK10_Val"> Generic clock generator 10
-
-// <GCLK_PCHCTRL_GEN_GCLK11_Val"> Generic clock generator 11
-
-// <i> Select the clock source for CORE.
-#ifndef CONF_GCLK_SERCOM1_CORE_SRC
-#define CONF_GCLK_SERCOM1_CORE_SRC GCLK_PCHCTRL_GEN_GCLK0_Val
-#endif
-
-// <y> Slow Clock Source
-// <id> slow_gclk_selection
-
-// <GCLK_PCHCTRL_GEN_GCLK0_Val"> Generic clock generator 0
-
-// <GCLK_PCHCTRL_GEN_GCLK1_Val"> Generic clock generator 1
-
-// <GCLK_PCHCTRL_GEN_GCLK2_Val"> Generic clock generator 2
-
-// <GCLK_PCHCTRL_GEN_GCLK3_Val"> Generic clock generator 3
-
-// <GCLK_PCHCTRL_GEN_GCLK4_Val"> Generic clock generator 4
-
-// <GCLK_PCHCTRL_GEN_GCLK5_Val"> Generic clock generator 5
-
-// <GCLK_PCHCTRL_GEN_GCLK6_Val"> Generic clock generator 6
-
-// <GCLK_PCHCTRL_GEN_GCLK7_Val"> Generic clock generator 7
-
-// <GCLK_PCHCTRL_GEN_GCLK8_Val"> Generic clock generator 8
-
-// <GCLK_PCHCTRL_GEN_GCLK9_Val"> Generic clock generator 9
-
-// <GCLK_PCHCTRL_GEN_GCLK10_Val"> Generic clock generator 10
-
-// <GCLK_PCHCTRL_GEN_GCLK11_Val"> Generic clock generator 11
-
-// <i> Select the slow clock source.
-#ifndef CONF_GCLK_SERCOM1_SLOW_SRC
 #define CONF_GCLK_SERCOM1_SLOW_SRC GCLK_PCHCTRL_GEN_GCLK3_Val
-#endif
+#define CONF_GCLK_SERCOM1_CORE_FREQUENCY 48000000
-
-/**
- * \def CONF_GCLK_SERCOM1_CORE_FREQUENCY
- * \brief SERCOM1's Core Clock frequency
- */
-#ifndef CONF_GCLK_SERCOM1_CORE_FREQUENCY
-#define CONF_GCLK_SERCOM1_CORE_FREQUENCY 12000000
-#endif
-
-/**
- * \def CONF_GCLK_SERCOM1_SLOW_FREQUENCY
- * \brief SERCOM1's Slow Clock frequency
- */
-#ifndef CONF_GCLK_SERCOM1_SLOW_FREQUENCY
 #define CONF_GCLK_SERCOM1_SLOW_FREQUENCY 32768
-#endif
 
-// <y> TC Clock Source
+#define CONF_GCLK_SERCOM2_CORE_SRC GCLK_PCHCTRL_GEN_GCLK1_Val
-// <id> tc_gclk_selection
+#define CONF_GCLK_SERCOM2_SLOW_SRC GCLK_PCHCTRL_GEN_GCLK3_Val
+#define CONF_GCLK_SERCOM2_CORE_FREQUENCY 48000000
+#define CONF_GCLK_SERCOM2_SLOW_FREQUENCY 32768
 
-// <GCLK_PCHCTRL_GEN_GCLK0_Val"> Generic clock generator 0
+#define CONF_GCLK_SERCOM3_CORE_SRC GCLK_PCHCTRL_GEN_GCLK1_Val
+#define CONF_GCLK_SERCOM3_SLOW_SRC GCLK_PCHCTRL_GEN_GCLK3_Val
+#define CONF_GCLK_SERCOM3_CORE_FREQUENCY 48000000
+#define CONF_GCLK_SERCOM3_SLOW_FREQUENCY 32768
 
-// <GCLK_PCHCTRL_GEN_GCLK1_Val"> Generic clock generator 1
+#define CONF_GCLK_SERCOM4_CORE_SRC GCLK_PCHCTRL_GEN_GCLK1_Val
+#define CONF_GCLK_SERCOM4_SLOW_SRC GCLK_PCHCTRL_GEN_GCLK3_Val
+#define CONF_GCLK_SERCOM4_CORE_FREQUENCY 48000000
+#define CONF_GCLK_SERCOM4_SLOW_FREQUENCY 32768
 
-// <GCLK_PCHCTRL_GEN_GCLK2_Val"> Generic clock generator 2
+#define CONF_GCLK_SERCOM5_CORE_SRC GCLK_PCHCTRL_GEN_GCLK1_Val
+#define CONF_GCLK_SERCOM5_SLOW_SRC GCLK_PCHCTRL_GEN_GCLK3_Val
+#define CONF_GCLK_SERCOM5_CORE_FREQUENCY 48000000
+#define CONF_GCLK_SERCOM5_SLOW_FREQUENCY 32768
 
-// <GCLK_PCHCTRL_GEN_GCLK3_Val"> Generic clock generator 3
+#define CONF_GCLK_SERCOM6_CORE_SRC GCLK_PCHCTRL_GEN_GCLK1_Val
+#define CONF_GCLK_SERCOM6_SLOW_SRC GCLK_PCHCTRL_GEN_GCLK3_Val
+#define CONF_GCLK_SERCOM6_CORE_FREQUENCY 48000000
+#define CONF_GCLK_SERCOM6_SLOW_FREQUENCY 32768
 
-// <GCLK_PCHCTRL_GEN_GCLK4_Val"> Generic clock generator 4
+#define CONF_GCLK_SERCOM7_CORE_SRC GCLK_PCHCTRL_GEN_GCLK1_Val
+#define CONF_GCLK_SERCOM7_SLOW_SRC GCLK_PCHCTRL_GEN_GCLK3_Val
+#define CONF_GCLK_SERCOM7_CORE_FREQUENCY 48000000
+#define CONF_GCLK_SERCOM7_SLOW_FREQUENCY 32768
 
-// <GCLK_PCHCTRL_GEN_GCLK5_Val"> Generic clock generator 5
+// TC
-
-// <GCLK_PCHCTRL_GEN_GCLK6_Val"> Generic clock generator 6
-
-// <GCLK_PCHCTRL_GEN_GCLK7_Val"> Generic clock generator 7
-
-// <GCLK_PCHCTRL_GEN_GCLK8_Val"> Generic clock generator 8
-
-// <GCLK_PCHCTRL_GEN_GCLK9_Val"> Generic clock generator 9
-
-// <GCLK_PCHCTRL_GEN_GCLK10_Val"> Generic clock generator 10
-
-// <GCLK_PCHCTRL_GEN_GCLK11_Val"> Generic clock generator 11
-
-// <i> Select the clock source for TC.
-#ifndef CONF_GCLK_TC0_SRC
 #define CONF_GCLK_TC0_SRC GCLK_PCHCTRL_GEN_GCLK0_Val
-#endif
-
-/**
- * \def CONF_GCLK_TC0_FREQUENCY
- * \brief TC0's Clock frequency
- */
-#ifndef CONF_GCLK_TC0_FREQUENCY
 #define CONF_GCLK_TC0_FREQUENCY 12000000
-#endif
 
-// <y> USB Clock Source
+// USB
-// <id> usb_gclk_selection
-
-// <GCLK_PCHCTRL_GEN_GCLK0_Val"> Generic clock generator 0
-
-// <GCLK_PCHCTRL_GEN_GCLK1_Val"> Generic clock generator 1
-
-// <GCLK_PCHCTRL_GEN_GCLK2_Val"> Generic clock generator 2
-
-// <GCLK_PCHCTRL_GEN_GCLK3_Val"> Generic clock generator 3
-
-// <GCLK_PCHCTRL_GEN_GCLK4_Val"> Generic clock generator 4
-
-// <GCLK_PCHCTRL_GEN_GCLK5_Val"> Generic clock generator 5
-
-// <GCLK_PCHCTRL_GEN_GCLK6_Val"> Generic clock generator 6
-
-// <GCLK_PCHCTRL_GEN_GCLK7_Val"> Generic clock generator 7
-
-// <GCLK_PCHCTRL_GEN_GCLK8_Val"> Generic clock generator 8
-
-// <GCLK_PCHCTRL_GEN_GCLK9_Val"> Generic clock generator 9
-
-// <GCLK_PCHCTRL_GEN_GCLK10_Val"> Generic clock generator 10
-
-// <GCLK_PCHCTRL_GEN_GCLK11_Val"> Generic clock generator 11
-
-// <i> Select the clock source for USB.
-#ifndef CONF_GCLK_USB_SRC
 #define CONF_GCLK_USB_SRC GCLK_PCHCTRL_GEN_GCLK1_Val
-
-#endif
-
-/**
- * \def CONF_GCLK_USB_FREQUENCY
- * \brief USB's Clock frequency
- */
-#ifndef CONF_GCLK_USB_FREQUENCY
 #define CONF_GCLK_USB_FREQUENCY 48000000
-#endif
-
-// <<< end of configuration section >>>
 
 #endif // PERIPHERAL_CLK_CONFIG_H

ports/atmel-samd/boards/circuitplayground_express/mpconfigboard.mk

@@ -13,7 +13,7 @@ CHIP_FAMILY = samd21
 # Include these Python libraries in firmware.
 ### TODO(halbert): disable some of these frozen modules; they don't fit in 3.0.0 build while internalfs
 ### is in use
-###FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_BusDevice
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_BusDevice
-###FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_LIS3DH
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_LIS3DH
 FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_NeoPixel
 ###FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_Thermistor

ports/atmel-samd/common-hal/busio/I2C.c

@@ -26,25 +26,23 @@
 
 #include "shared-bindings/busio/I2C.h"
 #include "py/mperrno.h"
-#include "py/nlr.h"
 #include "py/runtime.h"
 
-#include "asf/sam0/drivers/sercom/i2c/i2c_master.h"
+#include "hal/include/hal_gpio.h"
-#include "samd21_pins.h"
+#include "hal/include/hal_i2c_m_sync.h"
+#include "hal/include/hpl_i2c_m_sync.h"
+
+#include "peripherals.h"
+#include "pins.h"
 
-// We use ENABLE registers below we don't want to treat as a macro.
-#undef ENABLE
 
 // Number of times to try to send packet if failed.
-#define TIMEOUT 1
+#define ATTEMPTS 2
 
 void common_hal_busio_i2c_construct(busio_i2c_obj_t *self,
         const mcu_pin_obj_t* scl, const mcu_pin_obj_t* sda, uint32_t frequency) {
-    struct i2c_master_config config_i2c_master;
-    i2c_master_get_config_defaults(&config_i2c_master);
-    // Struct takes the argument in Khz not Hz.
-    config_i2c_master.baud_rate = frequency / 1000;
     Sercom* sercom = NULL;
+    uint8_t sercom_index;
     uint32_t sda_pinmux = 0;
     uint32_t scl_pinmux = 0;
     for (int i = 0; i < NUM_SERCOMS_PER_PIN; i++) {
@@ -60,6 +58,7 @@ void common_hal_busio_i2c_construct(busio_i2c_obj_t *self,
                 scl->sercom[j].pad == 1) {
                 scl_pinmux = PINMUX(scl->pin, (j == 0) ? MUX_C : MUX_D);
                 sercom = potential_sercom;
+                sercom_index = scl->sercom[j].index; // 2 for SERCOM2, etc.
                 break;
             }
         }
@@ -71,28 +70,36 @@ void common_hal_busio_i2c_construct(busio_i2c_obj_t *self,
         mp_raise_ValueError("Invalid pins");
     }
 
-    config_i2c_master.pinmux_pad0 = sda_pinmux; // SDA
+
-    config_i2c_master.pinmux_pad1 = scl_pinmux; // SCL
+    // Set up I2C clocks on sercom.
-    config_i2c_master.buffer_timeout = 10000;
+    sercom_clock_init(sercom, sercom_index);
+
+    if (i2c_m_sync_init(&self->i2c_desc, sercom) != ERR_NONE) {
+            mp_raise_OSError(MP_EIO);
+    }
+        
+    gpio_set_pin_pull_mode(sda->pin, GPIO_PULL_OFF);
+    gpio_set_pin_function(sda->pin, sda_pinmux);
+
+    gpio_set_pin_pull_mode(scl->pin, GPIO_PULL_OFF);
+    gpio_set_pin_function(scl->pin, scl_pinmux);
+
+    // clkrate is always 0. baud_rate is in kHz.
+    
+    // Frequency must be set before the I2C device is enabled.
+    if (i2c_m_sync_set_baudrate(&self->i2c_desc, 0, frequency / 1000) != ERR_NONE) {
+        mp_raise_ValueError("Unsupported baudrate");
+    }
 
     self->sda_pin = sda->pin;
     self->scl_pin = scl->pin;
     claim_pin(sda);
     claim_pin(scl);
 
-    enum status_code status = i2c_master_init(&self->i2c_master_instance,
+    if (i2c_m_sync_enable(&self->i2c_desc) != ERR_NONE) {
-        sercom, &config_i2c_master);
-
-    if (status != STATUS_OK) {
         common_hal_busio_i2c_deinit(self);
-        if (status == STATUS_ERR_BAUDRATE_UNAVAILABLE) {
+        mp_raise_OSError(MP_EIO);
-            mp_raise_ValueError("Unsupported baudrate");
-        } else {
-            mp_raise_OSError(MP_EIO);
-        }
     }
-
-    i2c_master_enable(&self->i2c_master_instance);
 }
 
 bool common_hal_busio_i2c_deinited(busio_i2c_obj_t *self) {
@@ -103,7 +110,10 @@ void common_hal_busio_i2c_deinit(busio_i2c_obj_t *self) {
     if (common_hal_busio_i2c_deinited(self)) {
         return;
     }
-    i2c_master_reset(&self->i2c_master_instance);
+
+    i2c_m_sync_disable(&self->i2c_desc);
+    i2c_m_sync_deinit(&self->i2c_desc);
+    
     reset_pin(self->sda_pin);
     reset_pin(self->scl_pin);
     self->sda_pin = NO_PIN;
@@ -111,29 +121,23 @@ void common_hal_busio_i2c_deinit(busio_i2c_obj_t *self) {
 }
 
 bool common_hal_busio_i2c_probe(busio_i2c_obj_t *self, uint8_t addr) {
-    uint8_t buf;
+    struct io_descriptor *i2c_io;
-    struct i2c_master_packet packet = {
+    i2c_m_sync_get_io_descriptor(&self->i2c_desc, &i2c_io);
-        .address     = addr,
+    i2c_m_sync_set_slaveaddr(&self->i2c_desc, addr, I2C_M_SEVEN);
-        .data_length = 0,
-        .data        = &buf,
-        .ten_bit_address = false,
-        .high_speed      = false,
-        .hs_master_code  = 0x0,
-    };
 
-    enum status_code status = i2c_master_write_packet_wait(
+    // Write no data when just probing
-        &self->i2c_master_instance, &packet);
+    return io_write(i2c_io, NULL, 0) == ERR_NONE;
-    return status == STATUS_OK;
-}
-
-void common_hal_busio_i2c_configure(busio_i2c_obj_t *self,
-        uint32_t baudrate, uint8_t polarity, uint8_t phase, uint8_t bits) {
-    return;
 }
 
 bool common_hal_busio_i2c_try_lock(busio_i2c_obj_t *self) {
-    self->has_lock = i2c_master_lock(&self->i2c_master_instance) == STATUS_OK;
+    bool grabbed_lock = false;
-    return self->has_lock;
+    CRITICAL_SECTION_ENTER()
+        if (!self->has_lock) {
+            grabbed_lock = true;
+            self->has_lock = true;
+        }
+    CRITICAL_SECTION_LEAVE();
+    return grabbed_lock;
 }
 
 bool common_hal_busio_i2c_has_lock(busio_i2c_obj_t *self) {
@@ -142,38 +146,29 @@ bool common_hal_busio_i2c_has_lock(busio_i2c_obj_t *self) {
 
 void common_hal_busio_i2c_unlock(busio_i2c_obj_t *self) {
     self->has_lock = false;
-    i2c_master_unlock(&self->i2c_master_instance);
 }
 
 uint8_t common_hal_busio_i2c_write(busio_i2c_obj_t *self, uint16_t addr,
-        const uint8_t *data, size_t len, bool transmit_stop_bit) {
+                                   const uint8_t *data, size_t len, bool transmit_stop_bit) {
-    struct i2c_master_packet packet = {
-        .address     = addr,
-        .data_length = len,
-        .data        = (uint8_t *) data,
-        .ten_bit_address = false,
-        .high_speed      = false,
-        .hs_master_code  = 0x0,
-    };
 
-    uint16_t timeout = 0;
+    uint16_t attempts = ATTEMPTS;
-    enum status_code status = STATUS_BUSY;
+    int32_t status;
-    while (status != STATUS_OK) {
+    do {
-        if (transmit_stop_bit) {
+        struct _i2c_m_msg msg;
-            status = i2c_master_write_packet_wait(&self->i2c_master_instance,
+        msg.addr = addr;
-                                                  &packet);
+        msg.len = len;
-        } else {
+        msg.flags  = transmit_stop_bit ? I2C_M_STOP : 0;
-            status = i2c_master_write_packet_wait_no_stop(
+        msg.buffer = (uint8_t *) data;
-                &self->i2c_master_instance, &packet);
+        status = _i2c_m_sync_transfer(&self->i2c_desc.device, &msg);
-        }
+
-        /* Increment timeout counter and check if timed out. */
+        // Give up after ATTEMPTS tries.
-        if (timeout++ == TIMEOUT) {
+        if (--attempts == 0) {
             break;
         }
-    }
+    } while (status != I2C_OK);
-    if (status == STATUS_OK) {
+    if (status == I2C_OK) {
         return 0;
-    } else if (status == STATUS_ERR_BAD_ADDRESS) {
+    } else if (status == I2C_ERR_BAD_ADDRESS) {
         return MP_ENODEV;
     }
     return MP_EIO;
@@ -181,28 +176,25 @@ uint8_t common_hal_busio_i2c_write(busio_i2c_obj_t *self, uint16_t addr,
 
 uint8_t common_hal_busio_i2c_read(busio_i2c_obj_t *self, uint16_t addr,
         uint8_t *data, size_t len) {
-    struct i2c_master_packet packet = {
-        .address     = addr,
-        .data_length = len,
-        .data        = data,
-        .ten_bit_address = false,
-        .high_speed      = false,
-        .hs_master_code  = 0x0,
-    };
 
-    uint16_t timeout = 0;
+    uint16_t attempts = ATTEMPTS;
-    enum status_code status = STATUS_BUSY;
+    int32_t status;
-    while (status != STATUS_OK) {
+    do {
-        status = i2c_master_read_packet_wait(&self->i2c_master_instance,
+        struct _i2c_m_msg msg;
-                                             &packet);
+	msg.addr   = addr;
-        /* Increment timeout counter and check if timed out. */
+	msg.len    = len;
-        if (timeout++ == TIMEOUT) {
+	msg.flags  = I2C_M_STOP | I2C_M_RD;
+	msg.buffer = data;
+        status = _i2c_m_sync_transfer(&self->i2c_desc.device, &msg);
+
+        // Give up after ATTEMPTS tries.
+        if (--attempts == 0) {
             break;
         }
-    }
+    } while (status != I2C_OK);
-    if (status == STATUS_OK) {
+    if (status == ERR_NONE) {
         return 0;
-    } else if (status == STATUS_ERR_BAD_ADDRESS) {
+    } else if (status == I2C_ERR_BAD_ADDRESS) {
         return MP_ENODEV;
     }
     return MP_EIO;

ports/atmel-samd/common-hal/busio/I2C.h

@@ -29,13 +29,14 @@
 
 #include "common-hal/microcontroller/Pin.h"
 
-#include "asf/sam0/drivers/sercom/i2c/i2c_master.h"
+#include "hal/include/hal_i2c_m_sync.h"
+
 #include "py/obj.h"
 
 typedef struct {
     mp_obj_base_t base;
-    struct i2c_master_module i2c_master_instance;
+    struct i2c_m_sync_desc i2c_desc;
-    bool has_lock;
+    volatile bool has_lock;
     uint8_t scl_pin;
     uint8_t sda_pin;
 } busio_i2c_obj_t;

ports/atmel-samd/common-hal/digitalio/DigitalInOut.c

@@ -27,7 +27,6 @@
 #include <stdint.h>
 #include <string.h>
 
-#include "py/nlr.h"
 #include "py/runtime.h"
 #include "py/mphal.h"
 

ports/atmel-samd/common-hal/microcontroller/Pin.h

@@ -34,8 +34,9 @@
 #include "include/component/sercom.h"
 
 typedef struct {
-    Sercom *const sercom;
+    Sercom *const sercom;     // SERCOM0, SERCOM1, etc.
-    uint8_t pad;
+    uint8_t index;            // 0, 1, etc. corresponding to SERCOM<n>.
+    uint8_t pad;              // which of the four SERCOM pads to use
 } pin_sercom_t;
 
 typedef struct {

ports/atmel-samd/mpconfigport.h

@@ -212,7 +212,7 @@ extern const struct _mp_obj_module_t usb_hid_module;
 // Disabled for now.
 // { MP_OBJ_NEW_QSTR(MP_QSTR_touchio), (mp_obj_t)&touchio_module },
 //    { MP_OBJ_NEW_QSTR(MP_QSTR_analogio), (mp_obj_t)&analogio_module },
-//    { MP_OBJ_NEW_QSTR(MP_QSTR_busio), (mp_obj_t)&busio_module },
+
 //    { MP_OBJ_NEW_QSTR(MP_QSTR_gamepad),(mp_obj_t)&gamepad_module },
 //    { MP_OBJ_NEW_QSTR(MP_QSTR_usb_hid),(mp_obj_t)&usb_hid_module },
 //    { MP_OBJ_NEW_QSTR(MP_QSTR_storage), (mp_obj_t)&storage_module },
@@ -221,6 +221,7 @@ extern const struct _mp_obj_module_t usb_hid_module;
 
 #define MICROPY_PORT_BUILTIN_MODULES \
     { MP_OBJ_NEW_QSTR(MP_QSTR_board), (mp_obj_t)&board_module }, \
+    { MP_OBJ_NEW_QSTR(MP_QSTR_busio), (mp_obj_t)&busio_module }, \
     { MP_OBJ_NEW_QSTR(MP_QSTR_digitalio), (mp_obj_t)&digitalio_module }, \
     { MP_OBJ_NEW_QSTR(MP_QSTR_microcontroller), (mp_obj_t)&microcontroller_module }, \
     { MP_OBJ_NEW_QSTR(MP_QSTR_neopixel_write),(mp_obj_t)&neopixel_write_module }, \

ports/atmel-samd/peripherals.h

@@ -0,0 +1,39 @@
+/*
+ * This file is part of the Micro Python project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2017 Scott Shawcroft for Adafruit Industries
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#ifndef MICROPY_INCLUDED_ATMEL_SAMD_PERIPHERALS_H
+#define MICROPY_INCLUDED_ATMEL_SAMD_PERIPHERALS_H
+
+#include "mpconfigport.h"
+
+#ifdef SAMD21
+#include "samd21_peripherals.h"
+#endif
+#ifdef SAMD51
+#include "samd51_peripherals.h"
+#endif
+
+#endif // MICROPY_INCLUDED_ATMEL_SAMD_PINS_H

ports/atmel-samd/pins.h

@@ -24,8 +24,8 @@
  * THE SOFTWARE.
  */
 
-#ifndef __MICROPY_INCLUDED_ATMEL_SAMD_PINS_H__
+#ifndef MICROPY_INCLUDED_ATMEL_SAMD_PINS_H
-#define __MICROPY_INCLUDED_ATMEL_SAMD_PINS_H__
+#define MICROPY_INCLUDED_ATMEL_SAMD_PINS_H
 
 #include "mpconfigport.h"
 
@@ -36,4 +36,4 @@
 #include "samd51_pins.h"
 #endif
 
-#endif // __MICROPY_INCLUDED_ATMEL_SAMD_PINS_H__
+#endif // MICROPY_INCLUDED_ATMEL_SAMD_PINS_H

ports/atmel-samd/samd21_peripherals.c

@@ -0,0 +1,65 @@
+/*
+ * This file is part of the Micro Python project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2017 Dan Halbert for Adafruit Industries
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "hpl/gclk/hpl_gclk_base.h"
+#include "hpl/pm/hpl_pm_base.h"
+
+// The clock initializer values are rather random, so we need to put them in
+// tables for lookup. We can't compute them.
+
+static const uint8_t SERCOMx_GCLK_ID_CORE[] = {
+    SERCOM0_GCLK_ID_CORE,
+    SERCOM1_GCLK_ID_CORE,
+    SERCOM2_GCLK_ID_CORE,
+    SERCOM3_GCLK_ID_CORE,
+#ifdef SERCOM4
+    SERCOM4_GCLK_ID_CORE,
+#endif
+#ifdef SERCOM5
+    SERCOM5_GCLK_ID_CORE,
+#endif
+};
+
+static const uint8_t SERCOMx_GCLK_ID_SLOW[] = {
+    SERCOM0_GCLK_ID_SLOW,
+    SERCOM1_GCLK_ID_SLOW,
+    SERCOM2_GCLK_ID_SLOW,
+    SERCOM3_GCLK_ID_SLOW,
+#ifdef SERCOM4
+    SERCOM4_GCLK_ID_SLOW,
+#endif
+#ifdef SERCOM5
+    SERCOM5_GCLK_ID_SLOW,
+#endif
+};
+
+    
+// Clock initialization as done in Atmel START.
+void sercom_clock_init(Sercom* sercom, uint8_t sercom_index) {
+    _pm_enable_bus_clock(PM_BUS_APBC, sercom);
+    _gclk_enable_channel(SERCOMx_GCLK_ID_CORE[sercom_index], GCLK_CLKCTRL_GEN_GCLK0_Val);
+    _gclk_enable_channel(SERCOMx_GCLK_ID_SLOW[sercom_index], GCLK_CLKCTRL_GEN_GCLK3_Val);
+}

ports/atmel-samd/samd21_peripherals.h

@@ -0,0 +1,34 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2017 by Dan Halbert for Adafruit Industries
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#ifndef MICROPY_INCLUDED_ATMEL_SAMD_SAMD21_PERIPHERALS_H
+#define MICROPY_INCLUDED_ATMEL_SAMD_SAMD21_PERIPHERALS_H
+
+#include "include/sam.h"
+
+void sercom_clock_init(Sercom* sercom, uint8_t sercom_index);
+
+#endif  // MICROPY_INCLUDED_ATMEL_SAMD_SAMD21_PERIPHERALS_H

ports/atmel-samd/samd21_pins.c

@@ -28,13 +28,20 @@
 
 #include "samd21_pins.h"
 
-#define SERCOM(p_sercom, p_pad) \
+#define SERCOM(sercom_index, p_pad)     \
 { \
-  .sercom = p_sercom, \
+  .sercom = SERCOM## sercom_index, \
+  .index = sercom_index,   \
   .pad = p_pad \
 }
 
-#define NO_SERCOM SERCOM(0, 0)
+#define NO_SERCOM \
+{ \
+  .sercom = 0, \
+  .index = 0, \
+  .pad = 0 \
+}
+    
 
 #define TCC(p_tcc, p_wave_output) \
 { \
@@ -93,14 +100,14 @@ const mcu_pin_obj_t pin_## p_name = { \
 #ifdef PIN_PA00
 PIN(PA00, EXTINT_CHANNEL(0), NO_ADC, NO_TOUCH,
     NO_SERCOM,
-    SERCOM(SERCOM1, 0),
+    SERCOM(1, 0),
     TCC(TCC2, 0),
     NO_TIMER);
 #endif
 #ifdef PIN_PA01
 PIN(PA01, EXTINT_CHANNEL(1), NO_ADC, NO_TOUCH,
     NO_SERCOM,
-    SERCOM(SERCOM1, 1),
+    SERCOM(1, 1),
     TCC(TCC2, 1),
     NO_TIMER);
 #endif
@@ -155,104 +162,104 @@ PIN(PB07, EXTINT_CHANNEL(7), ADC_INPUT(15), TOUCH(13),
 #ifdef PIN_PB08
 PIN(PB08, EXTINT_CHANNEL(8), ADC_INPUT(2), TOUCH(14),
     NO_SERCOM,
-    SERCOM(SERCOM4, 0),
+    SERCOM(4, 0),
     TC(TC4, 0),
     NO_TIMER);
 #endif
 #ifdef PIN_PB09
 PIN(PB09, EXTINT_CHANNEL(9), ADC_INPUT(3), TOUCH(15),
     NO_SERCOM,
-    SERCOM(SERCOM4, 1),
+    SERCOM(4, 1),
     TC(TC4, 1),
     NO_TIMER);
 #endif
 #ifdef PIN_PA04
 PIN(PA04, EXTINT_CHANNEL(4), ADC_INPUT(4), TOUCH(2),
     NO_SERCOM,
-    SERCOM(SERCOM0, 0),
+    SERCOM(0, 0),
     TCC(TCC0, 0),
     NO_TIMER);
 #endif
 #ifdef PIN_PA05
 PIN(PA05, EXTINT_CHANNEL(5), ADC_INPUT(5), TOUCH(3),
     NO_SERCOM,
-    SERCOM(SERCOM0, 1),
+    SERCOM(0, 1),
     TCC(TCC0, 1),
     NO_TIMER);
 #endif
 #ifdef PIN_PA06
 PIN(PA06, EXTINT_CHANNEL(6), ADC_INPUT(6), TOUCH(4),
     NO_SERCOM,
-    SERCOM(SERCOM0, 2),
+    SERCOM(0, 2),
     TCC(TCC1, 0),
     NO_TIMER);
 #endif
 #ifdef PIN_PA07
 PIN(PA07, EXTINT_CHANNEL(7), ADC_INPUT(7), TOUCH(5),
     NO_SERCOM,
-    SERCOM(SERCOM0, 3),
+    SERCOM(0, 3),
     TCC(TCC1, 1),
     NO_TIMER);
 #endif
 #ifdef PIN_PA08
 PIN(PA08, NO_EXTINT, ADC_INPUT(16), NO_TOUCH,
-    SERCOM(SERCOM0, 0),
+    SERCOM(0, 0),
-    SERCOM(SERCOM2, 0),
+    SERCOM(2, 0),
     TCC(TCC0, 0),
     TCC(TCC1, 2));
 #endif
 #ifdef PIN_PA09
 PIN(PA09, EXTINT_CHANNEL(9), ADC_INPUT(17), NO_TOUCH,
-    SERCOM(SERCOM0, 1),
+    SERCOM(0, 1),
-    SERCOM(SERCOM2, 1),
+    SERCOM(2, 1),
     TCC(TCC0, 1),
     TCC(TCC1, 3));
 #endif
 #ifdef PIN_PA10
 PIN(PA10, EXTINT_CHANNEL(10), ADC_INPUT(18), NO_TOUCH,
-    SERCOM(SERCOM0, 2),
+    SERCOM(0, 2),
-    SERCOM(SERCOM2, 2),
+    SERCOM(2, 2),
     TCC(TCC1, 0),
     TCC(TCC0, 2));
 #endif
 #ifdef PIN_PA11
 PIN(PA11, EXTINT_CHANNEL(11), ADC_INPUT(19), NO_TOUCH,
-    SERCOM(SERCOM0, 3),
+    SERCOM(0, 3),
-    SERCOM(SERCOM2, 3),
+    SERCOM(2, 3),
     TCC(TCC1, 1),
     TCC(TCC0, 3));
 #endif
 #ifdef PIN_PB10
 PIN(PB10, EXTINT_CHANNEL(10), NO_ADC, NO_TOUCH,
     NO_SERCOM,
-    SERCOM(SERCOM4, 2),
+    SERCOM(4, 2),
     TC(TC5, 0),
     TCC(TCC0, 4));
 #endif
 #ifdef PIN_PB11
 PIN(PB11, EXTINT_CHANNEL(11), NO_ADC, NO_TOUCH,
     NO_SERCOM,
-    SERCOM(SERCOM4, 3),
+    SERCOM(4, 3),
     TC(TC5, 1),
     TCC(TCC0, 5));
 #endif
 #ifdef PIN_PB12
 PIN(PB12, EXTINT_CHANNEL(12), NO_ADC, NO_TOUCH,
-    SERCOM(SERCOM4, 0),
+    SERCOM(4, 0),
     NO_SERCOM,
     TC(TC4, 0),
     TCC(TCC0, 6));
 #endif
 #ifdef PIN_PB13
 PIN(PB13, EXTINT_CHANNEL(13), NO_ADC, NO_TOUCH,
-    SERCOM(SERCOM4, 1),
+    SERCOM(4, 1),
     NO_SERCOM,
     TC(TC4, 1),
     TCC(TCC0, 7));
 #endif
 #ifdef PIN_PB14
 PIN(PB14, EXTINT_CHANNEL(14), NO_ADC, NO_TOUCH,
-    SERCOM(SERCOM4, 2),
+    SERCOM(4, 2),
     NO_SERCOM,
     TC(TC5, 0),
     NO_TIMER);
@@ -261,30 +268,30 @@ PIN(PB14, EXTINT_CHANNEL(14), NO_ADC, NO_TOUCH,
 // Second page.
 #ifdef PIN_PB15
 PIN(PB15, EXTINT_CHANNEL(15), NO_ADC, NO_TOUCH,
-    SERCOM(SERCOM4, 3),
+    SERCOM(4, 3),
     NO_SERCOM,
     TC(TC5, 1),
     NO_TIMER);
 #endif
 #ifdef PIN_PA12
 PIN(PA12, EXTINT_CHANNEL(12), NO_ADC, NO_TOUCH,
-    SERCOM(SERCOM2, 0),
+    SERCOM(2, 0),
-    SERCOM(SERCOM4, 0),
+    SERCOM(4, 0),
     TCC(TCC2, 0),
     TCC(TCC0, 6));
 #endif
 #ifdef PIN_PA13
 PIN(PA13, EXTINT_CHANNEL(13), NO_ADC, NO_TOUCH,
-    SERCOM(SERCOM2, 1),
+    SERCOM(2, 1),
-    SERCOM(SERCOM4, 1),
+    SERCOM(4, 1),
     TCC(TCC2, 1),
     TCC(TCC0, 7));
 #endif
 #ifdef PIN_PA14
 PIN(PA14, EXTINT_CHANNEL(14), NO_ADC, NO_TOUCH,
-    SERCOM(SERCOM2, 2),
+    SERCOM(2, 2),
     #ifdef SERCOM4
-    SERCOM(SERCOM4, 2),
+    SERCOM(4, 2),
     #else
     NO_SERCOM,
     #endif
@@ -293,9 +300,9 @@ PIN(PA14, EXTINT_CHANNEL(14), NO_ADC, NO_TOUCH,
 #endif
 #ifdef PIN_PA15
 PIN(PA15, EXTINT_CHANNEL(15), NO_ADC, NO_TOUCH,
-    SERCOM(SERCOM2, 3),
+    SERCOM(2, 3),
     #ifdef SERCOM4
-    SERCOM(SERCOM4, 3),
+    SERCOM(4, 3),
     #else
     NO_SERCOM,
     #endif
@@ -304,35 +311,35 @@ PIN(PA15, EXTINT_CHANNEL(15), NO_ADC, NO_TOUCH,
 #endif
 #ifdef PIN_PA16
 PIN(PA16, EXTINT_CHANNEL(0), NO_ADC, NO_TOUCH,
-    SERCOM(SERCOM1, 0),
+    SERCOM(1, 0),
-    SERCOM(SERCOM3, 0),
+    SERCOM(3, 0),
     TCC(TCC2, 0),
     TCC(TCC0, 6));
 #endif
 #ifdef PIN_PA17
 PIN(PA17, EXTINT_CHANNEL(1), NO_ADC, NO_TOUCH,
-    SERCOM(SERCOM1, 1),
+    SERCOM(1, 1),
-    SERCOM(SERCOM3, 1),
+    SERCOM(3, 1),
     TCC(TCC2, 1),
     TCC(TCC0, 7));
 #endif
 #ifdef PIN_PA18
 PIN(PA18, EXTINT_CHANNEL(2), NO_ADC, NO_TOUCH,
-    SERCOM(SERCOM1, 2),
+    SERCOM(1, 2),
-    SERCOM(SERCOM3, 2),
+    SERCOM(3, 2),
     TC(TC3, 0),
     TCC(TCC0, 2));
 #endif
 #ifdef PIN_PA19
 PIN(PA19, EXTINT_CHANNEL(3), NO_ADC, NO_TOUCH,
-    SERCOM(SERCOM1, 3),
+    SERCOM(1, 3),
-    SERCOM(SERCOM3, 3),
+    SERCOM(3, 3),
     TC(TC3, 1),
     TCC(TCC0, 3));
 #endif
 #ifdef PIN_PB16
 PIN(PB16, EXTINT_CHANNEL(0), NO_ADC, NO_TOUCH,
-    SERCOM(SERCOM5, 0),
+    SERCOM(5, 0),
     NO_SERCOM,
     #ifdef TC6
     TC(TC6, 0),
@@ -343,7 +350,7 @@ PIN(PB16, EXTINT_CHANNEL(0), NO_ADC, NO_TOUCH,
 #endif
 #ifdef PIN_PB17
 PIN(PB17, EXTINT_CHANNEL(1), NO_ADC, NO_TOUCH,
-    SERCOM(SERCOM5, 1),
+    SERCOM(5, 1),
     NO_SERCOM,
     #ifdef TC6
     TC(TC6, 1),
@@ -354,8 +361,8 @@ PIN(PB17, EXTINT_CHANNEL(1), NO_ADC, NO_TOUCH,
 #endif
 #ifdef PIN_PA20
 PIN(PA20, EXTINT_CHANNEL(4), NO_ADC, NO_TOUCH,
-    SERCOM(SERCOM5, 2),
+    SERCOM(5, 2),
-    SERCOM(SERCOM3, 2),
+    SERCOM(3, 2),
     #ifdef TC7
     TC(TC7, 0),
     #else
@@ -365,8 +372,8 @@ PIN(PA20, EXTINT_CHANNEL(4), NO_ADC, NO_TOUCH,
 #endif
 #ifdef PIN_PA21
 PIN(PA21, EXTINT_CHANNEL(5), NO_ADC, NO_TOUCH,
-    SERCOM(SERCOM5, 3),
+    SERCOM(5, 3),
-    SERCOM(SERCOM3, 3),
+    SERCOM(3, 3),
     #ifdef TC7
     TC(TC7, 1),
     #else
@@ -376,9 +383,9 @@ PIN(PA21, EXTINT_CHANNEL(5), NO_ADC, NO_TOUCH,
 #endif
 #ifdef PIN_PA22
 PIN(PA22, EXTINT_CHANNEL(6), NO_ADC, NO_TOUCH,
-    SERCOM(SERCOM3, 0),
+    SERCOM(3, 0),
     #ifdef SERCOM5
-    SERCOM(SERCOM5, 0),
+    SERCOM(5, 0),
     #else
     NO_SERCOM,
     #endif,
@@ -387,9 +394,9 @@ PIN(PA22, EXTINT_CHANNEL(6), NO_ADC, NO_TOUCH,
 #endif
 #ifdef PIN_PA23
 PIN(PA23, EXTINT_CHANNEL(7), NO_ADC, NO_TOUCH,
-    SERCOM(SERCOM3, 1),
+    SERCOM(3, 1),
     #ifdef SERCOM5
-    SERCOM(SERCOM5, 1),
+    SERCOM(5, 1),
     #else
     NO_SERCOM,
     #endif
@@ -398,9 +405,9 @@ PIN(PA23, EXTINT_CHANNEL(7), NO_ADC, NO_TOUCH,
 #endif
 #ifdef PIN_PA24
 PIN(PA24, EXTINT_CHANNEL(12), NO_ADC, NO_TOUCH,
-    SERCOM(SERCOM3, 2),
+    SERCOM(3, 2),
     #ifdef SERCOM5
-    SERCOM(SERCOM5, 2),
+    SERCOM(5, 2),
     #else
     NO_SERCOM,
     #endif
@@ -409,9 +416,9 @@ PIN(PA24, EXTINT_CHANNEL(12), NO_ADC, NO_TOUCH,
 #endif
 #ifdef PIN_PA25
 PIN(PA25, EXTINT_CHANNEL(13), NO_ADC, NO_TOUCH,
-    SERCOM(SERCOM3, 3),
+    SERCOM(3, 3),
     #ifdef SERCOM5
-    SERCOM(SERCOM5, 3),
+    SERCOM(5, 3),
     #else
     NO_SERCOM,
     #endif
@@ -421,7 +428,7 @@ PIN(PA25, EXTINT_CHANNEL(13), NO_ADC, NO_TOUCH,
 #ifdef PIN_PB22
 PIN(PB22, EXTINT_CHANNEL(6), NO_ADC, NO_TOUCH,
     NO_SERCOM,
-    SERCOM(SERCOM5, 2),
+    SERCOM(5, 2),
     #ifdef TC7
     TC(TC7, 0, 0),
     #else
@@ -432,7 +439,7 @@ PIN(PB22, EXTINT_CHANNEL(6), NO_ADC, NO_TOUCH,
 #ifdef PIN_PB23
 PIN(PB23, EXTINT_CHANNEL(7), NO_ADC, NO_TOUCH,
     NO_SERCOM,
-    SERCOM(SERCOM5, 3),
+    SERCOM(5, 3),
     #ifdef TC7
     TC(TC7, 1, 1),
     #else
@@ -457,35 +464,35 @@ PIN(PA28, EXTINT_CHANNEL(8), NO_ADC, NO_TOUCH,
 #ifdef PIN_PA30
 PIN(PA30, EXTINT_CHANNEL(10), NO_ADC, NO_TOUCH,
     NO_SERCOM,
-    SERCOM(SERCOM1, 2),
+    SERCOM(1, 2),
     TCC(TCC1, 0),
     NO_TIMER);
 #endif
 #ifdef PIN_PA31
 PIN(PA31, EXTINT_CHANNEL(11), NO_ADC, NO_TOUCH,
     NO_SERCOM,
-    SERCOM(SERCOM1, 3),
+    SERCOM(1, 3),
     TCC(TCC1, 1),
     NO_TIMER);
 #endif
 #ifdef PIN_PB30
 PIN(PB30, EXTINT_CHANNEL(14), NO_ADC, NO_TOUCH,
     NO_SERCOM,
-    SERCOM(SERCOM5, 0),
+    SERCOM(5, 0),
     TCC(TCC0, 0),
     TCC(TCC1, 2));
 #endif
 #ifdef PIN_PB31
 PIN(PB31, EXTINT_CHANNEL(15), NO_ADC, NO_TOUCH,
     NO_SERCOM,
-    SERCOM(SERCOM5, 1),
+    SERCOM(5, 1),
     TCC(TCC0, 1),
     TCC(TCC1, 3));
 #endif
 #ifdef PIN_PB00
 PIN(PB00, EXTINT_CHANNEL(0), ADC_INPUT(8), TOUCH(6),
     NO_SERCOM,
-    SERCOM(SERCOM5, 2),
+    SERCOM(5, 2),
     #ifdef TC7
     TC(TC7, 0, 0),
     #else
@@ -496,7 +503,7 @@ PIN(PB00, EXTINT_CHANNEL(0), ADC_INPUT(8), TOUCH(6),
 #ifdef PIN_PB01
 PIN(PB01, EXTINT_CHANNEL(1), ADC_INPUT(9), TOUCH(7),
     NO_SERCOM,
-    SERCOM(SERCOM5, 3)),
+    SERCOM(5, 3)),
     #ifdef TC7
     TC(TC7, 1),
     #else
@@ -507,7 +514,7 @@ PIN(PB01, EXTINT_CHANNEL(1), ADC_INPUT(9), TOUCH(7),
 #ifdef PIN_PB02
 PIN(PB02, EXTINT_CHANNEL(2), ADC_INPUT(10), TOUCH(8),
     NO_SERCOM,
-    SERCOM(SERCOM5, 0),
+    SERCOM(5, 0),
     #ifdef TC6
     TC(TC6, 0),
     #else
@@ -518,7 +525,7 @@ PIN(PB02, EXTINT_CHANNEL(2), ADC_INPUT(10), TOUCH(8),
 #ifdef PIN_PB03
 PIN(PB03, EXTINT_CHANNEL(3), ADC_INPUT(11), TOUCH(9),
     NO_SERCOM,
-    SERCOM(SERCOM5, 1),
+    SERCOM(5, 1),
     #ifdef TC6
     TC(TC6, 1),
     #else

ports/atmel-samd/samd51_peripherals.c

@@ -0,0 +1,104 @@
+/*
+ * This file is part of the Micro Python project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2017 Dan Halbert for Adafruit Industries
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "hpl/gclk/hpl_gclk_base.h"
+#include "hri/hri_mclk_d51.h"
+
+// The clock initializer values are rather random, so we need to put them in
+// tables for lookup. We can't compute them.
+
+static const uint8_t SERCOMx_GCLK_ID_CORE[] = {
+    SERCOM0_GCLK_ID_CORE,
+    SERCOM1_GCLK_ID_CORE,
+    SERCOM2_GCLK_ID_CORE,
+    SERCOM3_GCLK_ID_CORE,
+    SERCOM4_GCLK_ID_CORE,
+    SERCOM5_GCLK_ID_CORE,
+#ifdef SERCOM6
+    SERCOM6_GCLK_ID_CORE,
+#endif
+#ifdef SERCOM7
+    SERCOM7_GCLK_ID_CORE,
+#endif
+};
+
+static const uint8_t SERCOMx_GCLK_ID_SLOW[] = {
+    SERCOM0_GCLK_ID_SLOW,
+    SERCOM1_GCLK_ID_SLOW,
+    SERCOM2_GCLK_ID_SLOW,
+    SERCOM3_GCLK_ID_SLOW,
+    SERCOM4_GCLK_ID_SLOW,
+    SERCOM5_GCLK_ID_SLOW,
+#ifdef SERCOM6
+    SERCOM6_GCLK_ID_SLOW,
+#endif
+#ifdef SERCOM7
+    SERCOM7_GCLK_ID_SLOW,
+#endif
+};
+
+    
+// Clock initialization as done in Atmel START.
+void sercom_clock_init(Sercom* sercom, uint8_t sercom_index) {
+	hri_gclk_write_PCHCTRL_reg(GCLK,
+                                   SERCOMx_GCLK_ID_CORE[sercom_index],
+                                   GCLK_PCHCTRL_GEN_GCLK1_Val | (1 << GCLK_PCHCTRL_CHEN_Pos));
+	hri_gclk_write_PCHCTRL_reg(GCLK,
+                                   SERCOMx_GCLK_ID_SLOW[sercom_index],
+                                   GCLK_PCHCTRL_GEN_GCLK3_Val | (1 << GCLK_PCHCTRL_CHEN_Pos));
+
+        // hri_mclk_set_APBAMASK_SERCOMx_bit is an inline, so let's use a switch, not a table.
+        switch (sercom_index) {
+        case 0:
+            hri_mclk_set_APBAMASK_SERCOM0_bit(MCLK);
+            break;
+        case 1:
+            hri_mclk_set_APBAMASK_SERCOM1_bit(MCLK);
+            break;
+        case 2:
+            hri_mclk_set_APBBMASK_SERCOM2_bit(MCLK);
+            break;
+        case 3:
+            hri_mclk_set_APBBMASK_SERCOM3_bit(MCLK);
+            break;
+        case 4:
+            hri_mclk_set_APBDMASK_SERCOM4_bit(MCLK);
+            break;
+        case 5:
+            hri_mclk_set_APBDMASK_SERCOM5_bit(MCLK);
+            break;
+#ifdef SERCOM6
+        case 6:
+            hri_mclk_set_APBDMASK_SERCOM6_bit(MCLK);
+            break;
+#endif
+#ifdef SERCOM7
+        case 7:
+            hri_mclk_set_APBDMASK_SERCOM7_bit(MCLK);
+            break;
+#endif
+        }
+}

ports/atmel-samd/samd51_peripherals.h

@@ -0,0 +1,35 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2017 by Dan Halbert for Adafruit Industries
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#ifndef MICROPY_INCLUDED_ATMEL_SAMD_SAMD51_PERIPHERALS_H
+#define MICROPY_INCLUDED_ATMEL_SAMD_SAMD51_PERIPHERALS_H
+
+#include "sam.h"
+
+void sercom_clock_init(Sercom* sercom, uint8_t sercom_index);
+
+#endif  // MICROPY_INCLUDED_ATMEL_SAMD_SAMD51_PERIPHERALS_H
+

ports/atmel-samd/samd51_pins.c

@@ -28,13 +28,19 @@
 
 #include "samd51_pins.h"
 
-#define SERCOM(p_sercom, p_pad) \
+#define SERCOM(sercom_index, p_pad)     \
 { \
-  .sercom = p_sercom, \
+  .sercom = SERCOM## sercom_index, \
+  .index = sercom_index,   \
   .pad = p_pad \
 }
 
-#define NO_SERCOM SERCOM(0, 0)
+#define NO_SERCOM \
+{ \
+  .sercom = 0, \
+  .index = 0, \
+  .pad = 0 \
+}
 
 #define TCC(p_tcc, p_wave_output) \
 { \
@@ -92,7 +98,7 @@ const mcu_pin_obj_t pin_## p_name = { \
 PIN(PB03, EXTINT_CHANNEL(3), ADC_INPUT(15), NO_ADC,
     TOUCH(21),
     NO_SERCOM,
-    SERCOM(SERCOM5, 1),
+    SERCOM(5, 1),
     #ifdef TC6
     TC(TC6, 1),
     #else
@@ -105,7 +111,7 @@ PIN(PB03, EXTINT_CHANNEL(3), ADC_INPUT(15), NO_ADC,
 PIN(PA00, EXTINT_CHANNEL(0), NO_ADC, NO_ADC,
     NO_TOUCH,
     NO_SERCOM,
-    SERCOM(SERCOM1, 0),
+    SERCOM(1, 0),
     TC(TC2, 0),
     NO_TIMER,
     NO_TIMER);
@@ -114,7 +120,7 @@ PIN(PA00, EXTINT_CHANNEL(0), NO_ADC, NO_ADC,
 PIN(PA01, EXTINT_CHANNEL(1), NO_ADC, NO_ADC,
     NO_TOUCH,
     NO_SERCOM,
-    SERCOM(SERCOM1, 1),
+    SERCOM(1, 1),
     TC(TC2, 0),
     NO_TIMER,
     NO_TIMER);
@@ -244,7 +250,7 @@ PIN(PB07, EXTINT_CHANNEL(7), NO_ADC, ADC_INPUT(9),
 #ifdef PIN_PB08
 PIN(PB08, EXTINT_CHANNEL(8), ADC_INPUT(2), ADC_INPUT(0), TOUCH(1),
     NO_SERCOM,
-    SERCOM(SERCOM4, 0),
+    SERCOM(4, 0),
     TC(TC4, 0),
     NO_TIMER,
     NO_TIMER);
@@ -252,7 +258,7 @@ PIN(PB08, EXTINT_CHANNEL(8), ADC_INPUT(2), ADC_INPUT(0), TOUCH(1),
 #ifdef PIN_PB09
 PIN(PB09, EXTINT_CHANNEL(9), ADC_INPUT(3), ADC_INPUT(1), TOUCH(2),
     NO_SERCOM,
-    SERCOM(SERCOM4, 1),
+    SERCOM(4, 1),
     TC(TC4, 1),
     NO_TIMER,
     NO_TIMER);
@@ -260,7 +266,7 @@ PIN(PB09, EXTINT_CHANNEL(9), ADC_INPUT(3), ADC_INPUT(1), TOUCH(2),
 #ifdef PIN_PA04
 PIN(PA04, EXTINT_CHANNEL(4), ADC_INPUT(4), NO_ADC, TOUCH(3),
     NO_SERCOM,
-    SERCOM(SERCOM0, 0),
+    SERCOM(0, 0),
     TC(TC0, 0),
     NO_TIMER,
     NO_TIMER);
@@ -268,7 +274,7 @@ PIN(PA04, EXTINT_CHANNEL(4), ADC_INPUT(4), NO_ADC, TOUCH(3),
 #ifdef PIN_PA05
 PIN(PA05, EXTINT_CHANNEL(5), ADC_INPUT(5), NO_ADC, NO_TOUCH,
     NO_SERCOM,
-    SERCOM(SERCOM0, 1),
+    SERCOM(0, 1),
     TC(TC0, 1),
     NO_TIMER,
     NO_TIMER);
@@ -276,7 +282,7 @@ PIN(PA05, EXTINT_CHANNEL(5), ADC_INPUT(5), NO_ADC, NO_TOUCH,
 #ifdef PIN_PA06
 PIN(PA06, EXTINT_CHANNEL(6), ADC_INPUT(6), NO_ADC, TOUCH(4),
     NO_SERCOM,
-    SERCOM(SERCOM0, 2),
+    SERCOM(0, 2),
     TC(TC1, 0),
     NO_TIMER,
     NO_TIMER);
@@ -286,7 +292,7 @@ PIN(PA06, EXTINT_CHANNEL(6), ADC_INPUT(6), NO_ADC, TOUCH(4),
 #ifdef PIN_PA07
 PIN(PA07, EXTINT_CHANNEL(7), ADC_INPUT(7), NO_ADC, TOUCH(5),
     NO_SERCOM,
-    SERCOM(SERCOM0, 3),
+    SERCOM(0, 3),
     TC(TC1, 1),
     NO_TIMER,
     NO_TIMER);
@@ -294,7 +300,7 @@ PIN(PA07, EXTINT_CHANNEL(7), ADC_INPUT(7), NO_ADC, TOUCH(5),
 #ifdef PIN_PC04
 PIN(PC04, EXTINT_CHANNEL(4), NO_ADC, NO_ADC, NO_TOUCH,
     #ifdef SERCOM6
-    SERCOM(SERCOM6, 0),
+    SERCOM(6, 0),
     #else
     NO_SERCOM,
     #endif
@@ -306,7 +312,7 @@ PIN(PC04, EXTINT_CHANNEL(4), NO_ADC, NO_ADC, NO_TOUCH,
 #ifdef PIN_PC05
 PIN(PC05, EXTINT_CHANNEL(5), NO_ADC, NO_ADC, NO_TOUCH,
     #ifdef SERCOM6
-    SERCOM(SERCOM6, 1),
+    SERCOM(6, 1),
     #else
     NO_SERCOM,
     #endif
@@ -318,7 +324,7 @@ PIN(PC05, EXTINT_CHANNEL(5), NO_ADC, NO_ADC, NO_TOUCH,
 #ifdef PIN_PC06
 PIN(PC06, EXTINT_CHANNEL(6), NO_ADC, NO_ADC, NO_TOUCH,
     #ifdef SERCOM6
-    SERCOM(SERCOM6, 2),
+    SERCOM(6, 2),
     #else
     NO_SERCOM,
     #endif
@@ -330,7 +336,7 @@ PIN(PC06, EXTINT_CHANNEL(6), NO_ADC, NO_ADC, NO_TOUCH,
 #ifdef PIN_PC07
 PIN(PC07, EXTINT_CHANNEL(7), NO_ADC, NO_ADC, NO_TOUCH,
     #ifdef SERCOM6
-    SERCOM(SERCOM6, 3),
+    SERCOM(6, 3),
     #else
     NO_SERCOM,
     #endif
@@ -341,32 +347,32 @@ PIN(PC07, EXTINT_CHANNEL(7), NO_ADC, NO_ADC, NO_TOUCH,
 #endif
 #ifdef PIN_PA08
 PIN(PA08, NO_EXTINT, ADC_INPUT(8), ADC_INPUT(2), TOUCH(6),
-    SERCOM(SERCOM0, 0),
+    SERCOM(0, 0),
-    SERCOM(SERCOM2, 1),
+    SERCOM(2, 1),
     TC(TC0, 0),
     TCC(TCC0, 0),
     TCC(TCC1, 4));
 #endif
 #ifdef PIN_PA09
 PIN(PA09, EXTINT_CHANNEL(9), ADC_INPUT(9), ADC_INPUT(3), TOUCH(7),
-    SERCOM(SERCOM0, 1),
+    SERCOM(0, 1),
-    SERCOM(SERCOM2, 0),
+    SERCOM(2, 0),
     TC(TC0, 1),
     TCC(TCC0, 1),
     TCC(TCC1, 5));
 #endif
 #ifdef PIN_PA10
 PIN(PA10, EXTINT_CHANNEL(10), ADC_INPUT(10), NO_ADC, TOUCH(8),
-    SERCOM(SERCOM0, 2),
+    SERCOM(0, 2),
-    SERCOM(SERCOM2, 2),
+    SERCOM(2, 2),
     TC(TC1, 0),
     TCC(TCC0, 2),
     TCC(TCC1, 6));
 #endif
 #ifdef PIN_PA11
 PIN(PA11, EXTINT_CHANNEL(11), ADC_INPUT(11), NO_ADC, TOUCH(9),
-    SERCOM(SERCOM0, 3),
+    SERCOM(0, 3),
-    SERCOM(SERCOM2, 3),
+    SERCOM(2, 3),
     TC(TC1, 0),
     TCC(TCC0, 3),
     TCC(TCC1, 7));
@@ -374,7 +380,7 @@ PIN(PA11, EXTINT_CHANNEL(11), ADC_INPUT(11), NO_ADC, TOUCH(9),
 #ifdef PIN_PB10
 PIN(PB10, EXTINT_CHANNEL(10), NO_ADC, NO_ADC, NO_TOUCH,
     NO_SERCOM,
-    SERCOM(SERCOM4, 2),
+    SERCOM(4, 2),
     #ifdef TC5
     TC(TC5, 0),
     #else
@@ -386,7 +392,7 @@ PIN(PB10, EXTINT_CHANNEL(10), NO_ADC, NO_ADC, NO_TOUCH,
 #ifdef PIN_PB11
 PIN(PB11, EXTINT_CHANNEL(11), NO_ADC, NO_ADC, NO_TOUCH,
     NO_SERCOM,
-    SERCOM(SERCOM4, 3),
+    SERCOM(4, 3),
     #ifdef TC5
     TC(TC5, 1),
     #else
@@ -402,7 +408,7 @@ PIN(PB12, EXTINT_CHANNEL(12), NO_ADC, NO_ADC,
     #else
     NO_TOUCH,
     #endif
-    SERCOM(SERCOM4, 0),
+    SERCOM(4, 0),
     NO_SERCOM,
     #ifdef TC4
     TC(TC4, 0),
@@ -423,7 +429,7 @@ PIN(PB13, EXTINT_CHANNEL(13), NO_ADC, NO_ADC,
     #else
     NO_TOUCH,
     #endif
-    SERCOM(SERCOM4, 1),
+    SERCOM(4, 1),
     NO_SERCOM,
     #ifdef TC4
     TC(TC4, 1),
@@ -444,7 +450,7 @@ PIN(PB14, EXTINT_CHANNEL(14), NO_ADC, NO_ADC,
     #else
     NO_TOUCH,
     #endif
-    SERCOM(SERCOM4, 2),
+    SERCOM(4, 2),
     NO_SERCOM,
     #ifdef TC5
     TC(TC5, 0),
@@ -465,7 +471,7 @@ PIN(PB15, EXTINT_CHANNEL(15), NO_ADC, NO_ADC,
     #else
     NO_TOUCH,
     #endif
-    SERCOM(SERCOM4, 3),
+    SERCOM(4, 3),
     NO_SERCOM,
     #ifdef TC5
     TC(TC5, 1),
@@ -483,12 +489,12 @@ PIN(PB15, EXTINT_CHANNEL(15), NO_ADC, NO_ADC,
 PIN(PD08, EXTINT_CHANNEL(3), NO_ADC, NO_ADC,
     NO_TOUCH,
     #ifdef SERCOM7
-    SERCOM(SERCOM7, 0),
+    SERCOM(7, 0),
     #else
     NO_SERCOM,
     #endif
     #ifdef SERCOM6
-    SERCOM(SERCOM6, 1),
+    SERCOM(6, 1),
     #else
     NO_SERCOM,
     #endif
@@ -500,12 +506,12 @@ PIN(PD08, EXTINT_CHANNEL(3), NO_ADC, NO_ADC,
 PIN(PD09, EXTINT_CHANNEL(4), NO_ADC, NO_ADC,
     NO_TOUCH,
     #ifdef SERCOM7
-    SERCOM(SERCOM7, 1),
+    SERCOM(7, 1),
     #else
     NO_SERCOM,
     #endif
     #ifdef SERCOM6
-    SERCOM(SERCOM6, 0),
+    SERCOM(6, 0),
     #else
     NO_SERCOM,
     #endif
@@ -517,12 +523,12 @@ PIN(PD09, EXTINT_CHANNEL(4), NO_ADC, NO_ADC,
 PIN(PD10, EXTINT_CHANNEL(5), NO_ADC, NO_ADC,
     NO_TOUCH,
     #ifdef SERCOM7
-    SERCOM(SERCOM7, 2),
+    SERCOM(7, 2),
     #else
     NO_SERCOM,
     #endif
     #ifdef SERCOM6
-    SERCOM(SERCOM6, 2),
+    SERCOM(6, 2),
     #else
     NO_SERCOM,
     #endif
@@ -534,12 +540,12 @@ PIN(PD10, EXTINT_CHANNEL(5), NO_ADC, NO_ADC,
 PIN(PD11, EXTINT_CHANNEL(6), NO_ADC, NO_ADC,
     NO_TOUCH,
     #ifdef SERCOM7
-    SERCOM(SERCOM7, 3),
+    SERCOM(7, 3),
     #else
     NO_SERCOM,
     #endif
     #ifdef SERCOM6
-    SERCOM(SERCOM6, 3),
+    SERCOM(6, 3),
     #else
     NO_SERCOM,
     #endif
@@ -560,12 +566,12 @@ PIN(PD12, EXTINT_CHANNEL(7), NO_ADC, NO_ADC,
 PIN(PC10, EXTINT_CHANNEL(10), NO_ADC, NO_ADC,
     NO_TOUCH,
     #ifdef SERCOM6
-    SERCOM(SERCOM6, 2),
+    SERCOM(6, 2),
     #else
     NO_SERCOM,
     #endif
     #ifdef SERCOM7
-    SERCOM(SERCOM7, 2),
+    SERCOM(7, 2),
     #else
     NO_SERCOM,
     #endif
@@ -577,12 +583,12 @@ PIN(PC10, EXTINT_CHANNEL(10), NO_ADC, NO_ADC,
 PIN(PC11, EXTINT_CHANNEL(11), NO_ADC, NO_ADC,
     NO_TOUCH,
     #ifdef SERCOM6
-    SERCOM(SERCOM6, 3),
+    SERCOM(6, 3),
     #else
     NO_SERCOM,
     #endif
     #ifdef SERCOM7
-    SERCOM(SERCOM7, 3),
+    SERCOM(7, 3),
     #else
     NO_SERCOM,
     #endif
@@ -594,12 +600,12 @@ PIN(PC11, EXTINT_CHANNEL(11), NO_ADC, NO_ADC,
 PIN(PC12, EXTINT_CHANNEL(12), NO_ADC, NO_ADC,
     NO_TOUCH,
     #ifdef SERCOM7
-    SERCOM(SERCOM7, 0),
+    SERCOM(7, 0),
     #else
     NO_SERCOM,
     #endif
     #ifdef SERCOM6
-    SERCOM(SERCOM6, 1),
+    SERCOM(6, 1),
     #else
     NO_SERCOM,
     #endif
@@ -611,12 +617,12 @@ PIN(PC12, EXTINT_CHANNEL(12), NO_ADC, NO_ADC,
 PIN(PC13, EXTINT_CHANNEL(13), NO_ADC, NO_ADC,
     NO_TOUCH,
     #ifdef SERCOM7
-    SERCOM(SERCOM7, 1),
+    SERCOM(7, 1),
     #else
     NO_SERCOM,
     #endif
     #ifdef SERCOM6
-    SERCOM(SERCOM6, 0),
+    SERCOM(6, 0),
     #else
     NO_SERCOM,
     #endif
@@ -628,12 +634,12 @@ PIN(PC13, EXTINT_CHANNEL(13), NO_ADC, NO_ADC,
 PIN(PC14, EXTINT_CHANNEL(14), NO_ADC, NO_ADC,
     NO_TOUCH,
     #ifdef SERCOM7
-    SERCOM(SERCOM7, 2),
+    SERCOM(7, 2),
     #else
     NO_SERCOM,
     #endif
     #ifdef SERCOM6
-    SERCOM(SERCOM6, 2),
+    SERCOM(6, 2),
     #else
     NO_SERCOM,
     #endif
@@ -645,12 +651,12 @@ PIN(PC14, EXTINT_CHANNEL(14), NO_ADC, NO_ADC,
 PIN(PC15, EXTINT_CHANNEL(15), NO_ADC, NO_ADC,
     NO_TOUCH,
     #ifdef SERCOM7
-    SERCOM(SERCOM7, 3),
+    SERCOM(7, 3),
     #else
     NO_SERCOM,
     #endif
     #ifdef SERCOM6
-    SERCOM(SERCOM6, 3),
+    SERCOM(6, 3),
     #else
     NO_SERCOM,
     #endif
@@ -660,16 +666,16 @@ PIN(PC15, EXTINT_CHANNEL(15), NO_ADC, NO_ADC,
 #endif
 #ifdef PIN_PA12
 PIN(PA12, EXTINT_CHANNEL(12), NO_ADC, NO_ADC, NO_TOUCH,
-    SERCOM(SERCOM2, 0),
+    SERCOM(2, 0),
-    SERCOM(SERCOM4, 1),
+    SERCOM(4, 1),
     TC(TC2, 0),
     TCC(TCC0, 6),
     TCC(TCC1, 2));
 #endif
 #ifdef PIN_PA13
 PIN(PA13, EXTINT_CHANNEL(13), NO_ADC, NO_ADC, NO_TOUCH,
-    SERCOM(SERCOM2, 1),
+    SERCOM(2, 1),
-    SERCOM(SERCOM4, 0),
+    SERCOM(4, 0),
     TC(TC2, 1),
     TCC(TCC0, 7),
     TCC(TCC1, 3));
@@ -678,48 +684,48 @@ PIN(PA13, EXTINT_CHANNEL(13), NO_ADC, NO_ADC, NO_TOUCH,
 // Third page
 #ifdef PIN_PA14
 PIN(PA14, EXTINT_CHANNEL(14), NO_ADC, NO_ADC, NO_TOUCH,
-    SERCOM(SERCOM2, 2),
+    SERCOM(2, 2),
-    SERCOM(SERCOM4, 2),
+    SERCOM(4, 2),
     TC(TC3, 0),
     TCC(TCC2, 0),
     TCC(TCC1, 2));
 #endif
 #ifdef PIN_PA15
 PIN(PA15, EXTINT_CHANNEL(15), NO_ADC, NO_ADC, NO_TOUCH,
-    SERCOM(SERCOM2, 3),
+    SERCOM(2, 3),
-    SERCOM(SERCOM4, 3),
+    SERCOM(4, 3),
     TC(TC3, 1),
     TCC(TCC2, 1),
     TCC(TCC1, 3));
 #endif
 #ifdef PIN_PA16
 PIN(PA16, EXTINT_CHANNEL(0), NO_ADC, NO_ADC, TOUCH(10),
-    SERCOM(SERCOM1, 0),
+    SERCOM(1, 0),
-    SERCOM(SERCOM3, 1),
+    SERCOM(3, 1),
     TC(TC2, 0),
     TCC(TCC1, 0),
     TCC(TCC0, 4));
 #endif
 #ifdef PIN_PA17
 PIN(PA17, EXTINT_CHANNEL(1), NO_ADC, NO_ADC, TOUCH(11),
-    SERCOM(SERCOM1, 1),
+    SERCOM(1, 1),
-    SERCOM(SERCOM3, 0),
+    SERCOM(3, 0),
     TC(TC2, 1),
     TCC(TCC1, 1),
     TCC(TCC0, 5));
 #endif
 #ifdef PIN_PA18
 PIN(PA18, EXTINT_CHANNEL(2), NO_ADC, NO_ADC, TOUCH(12),
-    SERCOM(SERCOM1, 2),
+    SERCOM(1, 2),
-    SERCOM(SERCOM3, 2),
+    SERCOM(3, 2),
     TC(TC3, 0),
     TCC(TCC1, 2),
     TCC(TCC0, 6));
 #endif
 #ifdef PIN_PA19
 PIN(PA19, EXTINT_CHANNEL(3), NO_ADC, NO_ADC, TOUCH(13),
-    SERCOM(SERCOM1, 3),
+    SERCOM(1, 3),
-    SERCOM(SERCOM3, 3),
+    SERCOM(3, 3),
     TC(TC3, 1),
     TCC(TCC1, 3),
     TCC(TCC0, 7));
@@ -728,11 +734,11 @@ PIN(PA19, EXTINT_CHANNEL(3), NO_ADC, NO_ADC, TOUCH(13),
 PIN(PC16, EXTINT_CHANNEL(0), NO_ADC, NO_ADC,
     NO_TOUCH,
     #ifdef SERCOM6
-    SERCOM(SERCOM6, 0),
+    SERCOM(6, 0),
     #else
     NO_SERCOM,
     #endif
-    SERCOM(SERCOM0, 1),
+    SERCOM(0, 1),
     NO_TIMER,
     TCC(TCC0, 0),
     NO_TIMER);
@@ -741,11 +747,11 @@ PIN(PC16, EXTINT_CHANNEL(0), NO_ADC, NO_ADC,
 PIN(PC17, EXTINT_CHANNEL(1), NO_ADC, NO_ADC,
     NO_TOUCH,
     #ifdef SERCOM6
-    SERCOM(SERCOM6, 1),
+    SERCOM(6, 1),
     #else
     NO_SERCOM,
     #endif
-    SERCOM(SERCOM0, 0),
+    SERCOM(0, 0),
     NO_TIMER,
     TCC(TCC0, 1),
     NO_TIMER);
@@ -754,11 +760,11 @@ PIN(PC17, EXTINT_CHANNEL(1), NO_ADC, NO_ADC,
 PIN(PC18, EXTINT_CHANNEL(2), NO_ADC, NO_ADC,
     NO_TOUCH,
     #ifdef SERCOM6
-    SERCOM(SERCOM6, 2),
+    SERCOM(6, 2),
     #else
     NO_SERCOM,
     #endif
-    SERCOM(SERCOM0, 2),
+    SERCOM(0, 2),
     NO_TIMER,
     TCC(TCC0, 2),
     NO_TIMER);
@@ -767,11 +773,11 @@ PIN(PC18, EXTINT_CHANNEL(2), NO_ADC, NO_ADC,
 PIN(PC19, EXTINT_CHANNEL(3), NO_ADC, NO_ADC,
     NO_TOUCH,
     #ifdef SERCOM6
-    SERCOM(SERCOM6, 3),
+    SERCOM(6, 3),
     #else
     NO_SERCOM,
     #endif
-    SERCOM(SERCOM0, 3),
+    SERCOM(0, 3),
     NO_TIMER,
     TCC(TCC0, 3),
     NO_TIMER);
@@ -797,8 +803,8 @@ PIN(PC21, EXTINT_CHANNEL(5), NO_ADC, NO_ADC,
 #ifdef PIN_PC22
 PIN(PC22, EXTINT_CHANNEL(6), NO_ADC, NO_ADC,
     NO_TOUCH,
-    SERCOM(SERCOM1, 0),
+    SERCOM(1, 0),
-    SERCOM(SERCOM3, 1),
+    SERCOM(3, 1),
     NO_TIMER,
     TCC(TCC0, 6),
     NO_TIMER);
@@ -806,8 +812,8 @@ PIN(PC22, EXTINT_CHANNEL(6), NO_ADC, NO_ADC,
 #ifdef PIN_PC23
 PIN(PC23, EXTINT_CHANNEL(7), NO_ADC, NO_ADC,
     NO_TOUCH,
-    SERCOM(SERCOM1, 1),
+    SERCOM(1, 1),
-    SERCOM(SERCOM3, 0),
+    SERCOM(3, 0),
     NO_TIMER,
     TCC(TCC0, 7),
     NO_TIMER);
@@ -815,8 +821,8 @@ PIN(PC23, EXTINT_CHANNEL(7), NO_ADC, NO_ADC,
 #ifdef PIN_PD20
 PIN(PD20, EXTINT_CHANNEL(10), NO_ADC, NO_ADC,
     NO_TOUCH,
-    SERCOM(SERCOM1, 2),
+    SERCOM(1, 2),
-    SERCOM(SERCOM3, 2),
+    SERCOM(3, 2),
     NO_TIMER,
     TCC(TCC1, 0),
     NO_TIMER);
@@ -824,8 +830,8 @@ PIN(PD20, EXTINT_CHANNEL(10), NO_ADC, NO_ADC,
 #ifdef PIN_PD21
 PIN(PD21, EXTINT_CHANNEL(11), NO_ADC, NO_ADC,
     NO_TOUCH,
-    SERCOM(SERCOM1, 3),
+    SERCOM(1, 3),
-    SERCOM(SERCOM3, 3),
+    SERCOM(3, 3),
     NO_TIMER,
     TCC(TCC1, 1),
     NO_TIMER);
@@ -836,7 +842,7 @@ PIN(PD21, EXTINT_CHANNEL(11), NO_ADC, NO_ADC,
 
 #ifdef PIN_PB16
 PIN(PB16, EXTINT_CHANNEL(0), NO_ADC, NO_ADC, NO_TOUCH,
-    SERCOM(SERCOM5, 0),
+    SERCOM(5, 0),
     NO_SERCOM,
     #ifdef TC6
     TC(TC6, 0),
@@ -848,7 +854,7 @@ PIN(PB16, EXTINT_CHANNEL(0), NO_ADC, NO_ADC, NO_TOUCH,
 #endif
 #ifdef PIN_PB17
 PIN(PB17, EXTINT_CHANNEL(1), NO_ADC, NO_ADC, NO_TOUCH,
-    SERCOM(SERCOM5, 1),
+    SERCOM(5, 1),
     NO_SERCOM,
     #ifdef TC6
     TC(TC6, 1),
@@ -860,9 +866,9 @@ PIN(PB17, EXTINT_CHANNEL(1), NO_ADC, NO_ADC, NO_TOUCH,
 #endif
 #ifdef PIN_PB18
 PIN(PB18, EXTINT_CHANNEL(2), NO_ADC, NO_ADC, NO_TOUCH,
-    SERCOM(SERCOM5, 2),
+    SERCOM(5, 2),
     #ifdef SERCOM7
-    SERCOM(SERCOM7, 2),
+    SERCOM(7, 2),
     #else
     NO_SERCOM,
     #endif
@@ -872,9 +878,9 @@ PIN(PB18, EXTINT_CHANNEL(2), NO_ADC, NO_ADC, NO_TOUCH,
 #endif
 #ifdef PIN_PB19
 PIN(PB19, EXTINT_CHANNEL(3), NO_ADC, NO_ADC, NO_TOUCH,
-    SERCOM(SERCOM5, 3),
+    SERCOM(5, 3),
     #ifdef SERCOM7
-    SERCOM(SERCOM7, 3),
+    SERCOM(7, 3),
     #else
     NO_SERCOM,
     #endif
@@ -884,9 +890,9 @@ PIN(PB19, EXTINT_CHANNEL(3), NO_ADC, NO_ADC, NO_TOUCH,
 #endif
 #ifdef PIN_PB20
 PIN(PB20, EXTINT_CHANNEL(4), NO_ADC, NO_ADC, NO_TOUCH,
-    SERCOM(SERCOM5, 0),
+    SERCOM(5, 0),
     #ifdef SERCOM7
-    SERCOM(SERCOM7, 1),
+    SERCOM(7, 1),
     #else
     NO_SERCOM,
     #endif
@@ -896,9 +902,9 @@ PIN(PB20, EXTINT_CHANNEL(4), NO_ADC, NO_ADC, NO_TOUCH,
 #endif
 #ifdef PIN_PB21
 PIN(PB21, EXTINT_CHANNEL(5), NO_ADC, NO_ADC, NO_TOUCH,
-    SERCOM(SERCOM5, 1),
+    SERCOM(5, 1),
     #ifdef SERCOM7
-    SERCOM(SERCOM7, 0),
+    SERCOM(7, 0),
     #else
     NO_SERCOM,
     #endif
@@ -908,8 +914,8 @@ PIN(PB21, EXTINT_CHANNEL(5), NO_ADC, NO_ADC, NO_TOUCH,
 #endif
 #ifdef PIN_PA20
 PIN(PA20, EXTINT_CHANNEL(4), NO_ADC, NO_ADC, TOUCH(14),
-    SERCOM(SERCOM5, 2),
+    SERCOM(5, 2),
-    SERCOM(SERCOM3, 2),
+    SERCOM(3, 2),
     #ifdef TC7
     TC(TC7, 0),
     #else
@@ -920,8 +926,8 @@ PIN(PA20, EXTINT_CHANNEL(4), NO_ADC, NO_ADC, TOUCH(14),
 #endif
 #ifdef PIN_PA21
 PIN(PA21, EXTINT_CHANNEL(5), NO_ADC, NO_ADC, TOUCH(15),
-    SERCOM(SERCOM5, 3),
+    SERCOM(5, 3),
-    SERCOM(SERCOM3, 3),
+    SERCOM(3, 3),
     #ifdef TC7
     TC(TC7, 1),
     #else
@@ -932,8 +938,8 @@ PIN(PA21, EXTINT_CHANNEL(5), NO_ADC, NO_ADC, TOUCH(15),
 #endif
 #ifdef PIN_PA22
 PIN(PA22, EXTINT_CHANNEL(6), NO_ADC, NO_ADC, TOUCH(16),
-    SERCOM(SERCOM3, 0),
+    SERCOM(3, 0),
-    SERCOM(SERCOM5, 1),
+    SERCOM(5, 1),
     #ifdef TC4
     TC(TC4, 0),
     #else
@@ -944,8 +950,8 @@ PIN(PA22, EXTINT_CHANNEL(6), NO_ADC, NO_ADC, TOUCH(16),
 #endif
 #ifdef PIN_PA23
 PIN(PA23, EXTINT_CHANNEL(7), NO_ADC, NO_ADC, TOUCH(17),
-    SERCOM(SERCOM3, 1),
+    SERCOM(3, 1),
-    SERCOM(SERCOM5, 0),
+    SERCOM(5, 0),
     #ifdef TC4
     TC(TC4, 1),
     #else
@@ -956,8 +962,8 @@ PIN(PA23, EXTINT_CHANNEL(7), NO_ADC, NO_ADC, TOUCH(17),
 #endif
 #ifdef PIN_PA24
 PIN(PA24, EXTINT_CHANNEL(8), NO_ADC, NO_ADC, NO_TOUCH,
-    SERCOM(SERCOM3, 2),
+    SERCOM(3, 2),
-    SERCOM(SERCOM5, 2),
+    SERCOM(5, 2),
     #ifdef TC5
     TC(TC5, 0),
     #else
@@ -968,8 +974,8 @@ PIN(PA24, EXTINT_CHANNEL(8), NO_ADC, NO_ADC, NO_TOUCH,
 #endif
 #ifdef PIN_PA25
 PIN(PA25, EXTINT_CHANNEL(9), NO_ADC, NO_ADC, NO_TOUCH,
-    SERCOM(SERCOM3, 3),
+    SERCOM(3, 3),
-    SERCOM(SERCOM5, 3),
+    SERCOM(5, 3),
     #ifdef TC5
     TC(TC5, 1),
     #else
@@ -982,8 +988,8 @@ PIN(PA25, EXTINT_CHANNEL(9), NO_ADC, NO_ADC, NO_TOUCH,
 // Fourth page
 #ifdef PIN_PB22
 PIN(PB22, EXTINT_CHANNEL(6), NO_ADC, NO_ADC, NO_TOUCH,
-    SERCOM(SERCOM1, 2),
+    SERCOM(1, 2),
-    SERCOM(SERCOM5, 2),
+    SERCOM(5, 2),
     #ifdef TC7
     TC(TC7, 0),
     #else
@@ -994,8 +1000,8 @@ PIN(PB22, EXTINT_CHANNEL(6), NO_ADC, NO_ADC, NO_TOUCH,
 #endif
 #ifdef PIN_PB23
 PIN(PB23, EXTINT_CHANNEL(7), NO_ADC, NO_ADC, NO_TOUCH,
-    SERCOM(SERCOM1, 3),
+    SERCOM(1, 3),
-    SERCOM(SERCOM5, 3),
+    SERCOM(5, 3),
     #ifdef TC7
     TC(TC7, 1),
     #else
@@ -1006,64 +1012,64 @@ PIN(PB23, EXTINT_CHANNEL(7), NO_ADC, NO_ADC, NO_TOUCH,
 #endif
 #ifdef PIN_PB24
 PIN(PB24, EXTINT_CHANNEL(8), NO_ADC, NO_ADC, NO_TOUCH,
-    SERCOM(SERCOM0, 0),
+    SERCOM(0, 0),
-    SERCOM(SERCOM2, 1),
+    SERCOM(2, 1),
     NO_TIMER,
     NO_TIMER,
     NO_TIMER);
 #endif
 #ifdef PIN_PB25
 PIN(PB25, EXTINT_CHANNEL(9), NO_ADC, NO_ADC, NO_TOUCH,
-    SERCOM(SERCOM0, 1),
+    SERCOM(0, 1),
-    SERCOM(SERCOM2, 0),
+    SERCOM(2, 0),
     NO_TIMER,
     NO_TIMER,
     NO_TIMER);
 #endif
 #ifdef PIN_PB26
 PIN(PB26, EXTINT_CHANNEL(12), NO_ADC, NO_ADC, NO_TOUCH,
-    SERCOM(SERCOM2, 0),
+    SERCOM(2, 0),
-    SERCOM(SERCOM4, 1),
+    SERCOM(4, 1),
     NO_TIMER,
     TCC(TCC1, 2),
     NO_TIMER);
 #endif
 #ifdef PIN_PB27
 PIN(PB27, EXTINT_CHANNEL(13), NO_ADC, NO_ADC, NO_TOUCH,
-    SERCOM(SERCOM2, 1),
+    SERCOM(2, 1),
-    SERCOM(SERCOM4, 0),
+    SERCOM(4, 0),
     NO_TIMER,
     TCC(TCC1, 3),
     NO_TIMER);
 #endif
 #ifdef PIN_PB28
 PIN(PB28, EXTINT_CHANNEL(14), NO_ADC, NO_ADC, NO_TOUCH,
-    SERCOM(SERCOM2, 2),
+    SERCOM(2, 2),
-    SERCOM(SERCOM4, 2),
+    SERCOM(4, 2),
     NO_TIMER,
     TCC(TCC1, 4),
     NO_TIMER);
 #endif
 #ifdef PIN_PB29
 PIN(PB29, EXTINT_CHANNEL(15), NO_ADC, NO_ADC, NO_TOUCH,
-    SERCOM(SERCOM2, 3),
+    SERCOM(2, 3),
-    SERCOM(SERCOM4, 3),
+    SERCOM(4, 3),
     NO_TIMER,
     TCC(TCC1, 5),
     NO_TIMER);
 #endif
 #ifdef PIN_PC24
 PIN(PC24, EXTINT_CHANNEL(8), NO_ADC, NO_ADC, NO_TOUCH,
-    SERCOM(SERCOM0, 2),
+    SERCOM(0, 2),
-    SERCOM(SERCOM2, 2),
+    SERCOM(2, 2),
     NO_TIMER,
     NO_TIMER,
     NO_TIMER);
 #endif
 #ifdef PIN_PC25
 PIN(PC25, EXTINT_CHANNEL(9), NO_ADC, NO_ADC, NO_TOUCH,
-    SERCOM(SERCOM0, 3),
+    SERCOM(0, 3),
-    SERCOM(SERCOM2, 3),
+    SERCOM(2, 3),
     NO_TIMER,
     NO_TIMER,
     NO_TIMER);
@@ -1078,7 +1084,7 @@ PIN(PC26, EXTINT_CHANNEL(10), NO_ADC, NO_ADC, NO_TOUCH,
 #endif
 #ifdef PIN_PC27
 PIN(PC27, EXTINT_CHANNEL(11), NO_ADC, NO_ADC, NO_TOUCH,
-    SERCOM(SERCOM1, 0),
+    SERCOM(1, 0),
     NO_SERCOM,
     NO_TIMER,
     NO_TIMER,
@@ -1086,7 +1092,7 @@ PIN(PC27, EXTINT_CHANNEL(11), NO_ADC, NO_ADC, NO_TOUCH,
 #endif
 #ifdef PIN_PC28
 PIN(PC28, EXTINT_CHANNEL(12), NO_ADC, NO_ADC, NO_TOUCH,
-    SERCOM(SERCOM1, 1),
+    SERCOM(1, 1),
     NO_SERCOM,
     NO_TIMER,
     NO_TIMER,
@@ -1103,11 +1109,11 @@ PIN(PA27, EXTINT_CHANNEL(11), NO_ADC, NO_ADC, TOUCH(18),
 #ifdef PIN_PA30
 PIN(PA30, EXTINT_CHANNEL(14), NO_ADC, NO_ADC, TOUCH(19),
     #ifdef SERCOM7
-    SERCOM(SERCOM7, 2),
+    SERCOM(7, 2),
     #else
     NO_SERCOM,
     #endif
-    SERCOM(SERCOM1, 2),
+    SERCOM(1, 2),
     #ifdef TC6
     TC(TC6, 0),
     #else
@@ -1119,11 +1125,11 @@ PIN(PA30, EXTINT_CHANNEL(14), NO_ADC, NO_ADC, TOUCH(19),
 #ifdef PIN_PA31
 PIN(PA31, EXTINT_CHANNEL(15), NO_ADC, NO_ADC, NO_TOUCH,
     #ifdef SERCOM7
-    SERCOM(SERCOM7, 3),
+    SERCOM(7, 3),
     #else
     NO_SERCOM,
     #endif
-    SERCOM(SERCOM1, 23),
+    SERCOM(1, 23),
     #ifdef TC6
     TC(TC6, 1),
     #else
@@ -1135,11 +1141,11 @@ PIN(PA31, EXTINT_CHANNEL(15), NO_ADC, NO_ADC, NO_TOUCH,
 #ifdef PIN_PB30
 PIN(PB30, EXTINT_CHANNEL(14), NO_ADC, NO_ADC, NO_TOUCH,
     #ifdef SERCOM7
-    SERCOM(SERCOM7, 0),
+    SERCOM(7, 0),
     #else
     NO_SERCOM,
     #endif
-    SERCOM(SERCOM5, 1),
+    SERCOM(5, 1),
     TC(TC0, 0),
     TCC(TCC4, 0),
     TCC(TCC0, 6));
@@ -1147,11 +1153,11 @@ PIN(PB30, EXTINT_CHANNEL(14), NO_ADC, NO_ADC, NO_TOUCH,
 #ifdef PIN_PB31
 PIN(PB31, EXTINT_CHANNEL(15), NO_ADC, NO_ADC, NO_TOUCH,
     #ifdef SERCOM7
-    SERCOM(SERCOM7, 1),
+    SERCOM(7, 1),
     #else
     NO_SERCOM,
     #endif
-    SERCOM(SERCOM5, 0),
+    SERCOM(5, 0),
     TC(TC0, 1),
     TCC(TCC4, 1),
     TCC(TCC0, 7));
@@ -1182,7 +1188,7 @@ PIN(PB00, EXTINT_CHANNEL(0), ADC_INPUT(12), NO_ADC,
     NO_TOUCH,
     #endif
     NO_SERCOM,
-    SERCOM(SERCOM5, 2),
+    SERCOM(5, 2),
     #ifdef TC7
     TC(TC7, 0),
     #else
@@ -1199,7 +1205,7 @@ PIN(PB01, EXTINT_CHANNEL(1), ADC_INPUT(13), NO_ADC,
     NO_TOUCH,
     #endif
     NO_SERCOM,
-    SERCOM(SERCOM5, 3),
+    SERCOM(5, 3),
     #ifdef TC7
     TC(TC7, 1),
     #else
@@ -1211,7 +1217,7 @@ PIN(PB01, EXTINT_CHANNEL(1), ADC_INPUT(13), NO_ADC,
 #ifdef PIN_PB02
 PIN(PB02, EXTINT_CHANNEL(2), ADC_INPUT(14), NO_ADC, TOUCH(20),
     NO_SERCOM,
-    SERCOM(SERCOM5, 0),
+    SERCOM(5, 0),
     #ifdef TC6
     TC(TC6, 0),
     #else

ports/atmel-samd/samd51_pins.h

@@ -24,8 +24,8 @@
  * THE SOFTWARE.
  */
 
-#ifndef __MICROPY_INCLUDED_ATMEL_SAMD_SAMD51_PINS_H__
+#ifndef MICROPY_INCLUDED_ATMEL_SAMD_SAMD51_PINS_H
-#define __MICROPY_INCLUDED_ATMEL_SAMD_SAMD51_PINS_H__
+#define MICROPY_INCLUDED_ATMEL_SAMD_SAMD51_PINS_H
 
 #include "include/sam.h"
 
@@ -345,4 +345,4 @@ extern const mcu_pin_obj_t pin_PB01;
 #ifdef PIN_PB02
 extern const mcu_pin_obj_t pin_PB02;
 #endif
-#endif  // __MICROPY_INCLUDED_ATMEL_SAMD_SAMD51_PINS_H__
+#endif  // MICROPY_INCLUDED_ATMEL_SAMD_SAMD51_PINS_H

ports/atmel-samd/supervisor/port.c

@@ -166,22 +166,23 @@ safe_mode_t port_init(void) {
 }
 
 void reset_port(void) {
-    // Reset all SERCOMs except the one being used by the SPI flash.
+    // Reset all SERCOMs except the ones being used by on-board devices.
-//     Sercom *sercom_instances[SERCOM_INST_NUM] = SERCOM_INSTS;
+    Sercom *sercom_instances[SERCOM_INST_NUM] = SERCOM_INSTS;
-//     for (int i = 0; i < SERCOM_INST_NUM; i++) {
+    for (int i = 0; i < SERCOM_INST_NUM; i++) {
-//         #ifdef SPI_FLASH_SERCOM
+#ifdef SPI_FLASH_SERCOM
-//             if (sercom_instances[i] == SPI_FLASH_SERCOM) {
+        if (sercom_instances[i] == SPI_FLASH_SERCOM) {
-//                 continue;
+            continue;
-//             }
+        }
-//         #endif
+#endif
-//         #ifdef MICROPY_HW_APA102_SERCOM
+#ifdef MICROPY_HW_APA102_SERCOM
-//             if (sercom_instances[i] == MICROPY_HW_APA102_SERCOM) {
+        if (sercom_instances[i] == MICROPY_HW_APA102_SERCOM) {
-//                 continue;
+            continue;
-//             }
+        }
-//         #endif
+#endif
-//         sercom_instances[i]->SPI.CTRLA.bit.SWRST = 1;
+        // SWRST is same for all modes of SERCOMs.
-//     }
+        sercom_instances[i]->SPI.CTRLA.bit.SWRST = 1;
-//
+    }
+
 // #ifdef EXPRESS_BOARD
 //     audioout_reset();
 //     touchin_reset();

ports/atmel-samd/tools/autogen_usb_descriptor.h

@@ -24,8 +24,8 @@
  * THE SOFTWARE.
  */
 
-#ifndef __MICROPY_INCLUDED_ATMEL_SAMD_TOOLS_AUTOGEN_USB_DESCRIPTOR_H__
+#ifndef MICROPY_INCLUDED_ATMEL_SAMD_TOOLS_AUTOGEN_USB_DESCRIPTOR_H
-#define __MICROPY_INCLUDED_ATMEL_SAMD_TOOLS_AUTOGEN_USB_DESCRIPTOR_H__
+#define MICROPY_INCLUDED_ATMEL_SAMD_TOOLS_AUTOGEN_USB_DESCRIPTOR_H
 
 #include "usb/device/usbdc.h"
 
@@ -33,4 +33,4 @@ struct usbd_descriptors descriptor_bounds;
 uint8_t* serial_number;
 uint8_t serial_number_length;
 
-#endif // __MICROPY_INCLUDED_ATMEL_SAMD_TOOLS_AUTOGEN_USB_DESCRIPTOR_H__
+#endif // MICROPY_INCLUDED_ATMEL_SAMD_TOOLS_AUTOGEN_USB_DESCRIPTOR_H

ports/atmel-samd/usb.h

@@ -24,8 +24,8 @@
  * THE SOFTWARE.
  */
 
-#ifndef __MICROPY_INCLUDED_ATMEL_SAMD_USB_H__
+#ifndef MICROPY_INCLUDED_ATMEL_SAMD_USB_H
-#define __MICROPY_INCLUDED_ATMEL_SAMD_USB_H__
+#define MICROPY_INCLUDED_ATMEL_SAMD_USB_H
 
 #include <stdbool.h>
 #include <stdint.h>
@@ -39,4 +39,4 @@ bool usb_bytes_available(void);
 bool usb_connected(void);
 void usb_cdc_background(void);
 
-#endif  // __MICROPY_INCLUDED_ATMEL_SAMD_USB_H__
+#endif  // MICROPY_INCLUDED_ATMEL_SAMD_USB_H

shared-bindings/busio/__init__.c

@@ -32,9 +32,9 @@
 #include "shared-bindings/microcontroller/Pin.h"
 #include "shared-bindings/busio/__init__.h"
 #include "shared-bindings/busio/I2C.h"
-#include "shared-bindings/busio/OneWire.h"
+//xxxx #include "shared-bindings/busio/OneWire.h"
-#include "shared-bindings/busio/SPI.h"
+//xxxx #include "shared-bindings/busio/SPI.h"
-#include "shared-bindings/busio/UART.h"
+//xxxx #include "shared-bindings/busio/UART.h"
 #include "shared-bindings/busio/__init__.h"
 
 #include "py/runtime.h"
@@ -88,9 +88,9 @@
 STATIC const mp_rom_map_elem_t busio_module_globals_table[] = {
     { MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_busio) },
     { MP_ROM_QSTR(MP_QSTR_I2C),   MP_ROM_PTR(&busio_i2c_type) },
-    { MP_ROM_QSTR(MP_QSTR_OneWire),   MP_ROM_PTR(&busio_onewire_type) },
+    //xxxx    { MP_ROM_QSTR(MP_QSTR_OneWire),   MP_ROM_PTR(&busio_onewire_type) },
-    { MP_ROM_QSTR(MP_QSTR_SPI),   MP_ROM_PTR(&busio_spi_type) },
+    //xxxx    { MP_ROM_QSTR(MP_QSTR_SPI),   MP_ROM_PTR(&busio_spi_type) },
-    { MP_ROM_QSTR(MP_QSTR_UART),   MP_ROM_PTR(&busio_uart_type) },
+    //xxxx    { MP_ROM_QSTR(MP_QSTR_UART),   MP_ROM_PTR(&busio_uart_type) },
 };
 
 STATIC MP_DEFINE_CONST_DICT(busio_module_globals, busio_module_globals_table);