cc3200: Make WDT and HeartBeat constant objects on their own right.

cc3200/bootmgr/bootloader.mk

@@ -44,10 +44,6 @@ BOOT_MISC_SRC_C = $(addprefix misc/,\
 	mperror.c \
 	)
 
-BOOT_MODS_SRC_C = $(addprefix mods/,\
-	pybwdt.c \
-	)
-
 BOOT_SL_SRC_C = $(addprefix simplelink/,\
 	cc_pal.c \
 	)
@@ -72,8 +68,8 @@ BOOT_STM_SRC_C = $(addprefix stmhal/,\
 	string0.c \
 	)
 	
-OBJ  = $(addprefix $(BUILD)/, $(BOOT_HAL_SRC_C:.c=.o) $(BOOT_MODS_SRC_C:.c=.o) $(BOOT_SL_SRC_C:.c=.o) $(BOOT_CC3100_SRC_C:.c=.o) $(BOOT_UTIL_SRC_C:.c=.o))
+OBJ  = $(addprefix $(BUILD)/, $(BOOT_HAL_SRC_C:.c=.o) $(BOOT_SL_SRC_C:.c=.o) $(BOOT_CC3100_SRC_C:.c=.o) $(BOOT_UTIL_SRC_C:.c=.o) $(BOOT_MISC_SRC_C:.c=.o))
-OBJ += $(addprefix $(BUILD)/, $(BOOT_MISC_SRC_C:.c=.o) $(BOOT_MAIN_SRC_C:.c=.o) $(BOOT_MAIN_SRC_S:.s=.o) $(BOOT_PY_SRC_C:.c=.o) $(BOOT_STM_SRC_C:.c=.o))
+OBJ += $(addprefix $(BUILD)/, $(BOOT_MAIN_SRC_C:.c=.o) $(BOOT_MAIN_SRC_S:.s=.o) $(BOOT_PY_SRC_C:.c=.o) $(BOOT_STM_SRC_C:.c=.o))
 
 # Add the linker script
 LINKER_SCRIPT = bootmgr/bootmgr.lds

cc3200/bootmgr/main.c

@@ -51,7 +51,6 @@
 #include "utils.h"
 #include "cc3200_hal.h"
 #include "debug.h"
-#include "pybwdt.h"
 #include "mperror.h"
 
 
@@ -149,7 +148,7 @@ static void bootmgr_board_init(void) {
     // Mandatory MCU Initialization
     PRCMCC3200MCUInit();
 
-    pybwdt_check_reset_cause();
+    mperror_check_reset_cause();
 
     // Enable the Data Hashing Engine
     HASH_Init();

cc3200/misc/mperror.c

@@ -86,6 +86,26 @@ void mperror_init0 (void) {
 #endif
 }
 
+void mperror_check_reset_cause (void) {
+    // if we are recovering from a WDT reset, trigger
+    // a hibernate cycle for a clean boot
+    if (MAP_PRCMSysResetCauseGet() == PRCM_WDT_RESET) {
+        HWREG(0x400F70B8) = 1;
+        UtilsDelay(800000/5);
+        HWREG(0x400F70B0) = 1;
+        UtilsDelay(800000/5);
+
+        HWREG(0x4402E16C) |= 0x2;
+        UtilsDelay(800);
+        HWREG(0x4402F024) &= 0xF7FFFFFF;
+
+        MAP_PRCMHibernateWakeupSourceEnable(PRCM_HIB_SLOW_CLK_CTR);
+        // set the sleep interval to 10ms
+        MAP_PRCMHibernateIntervalSet(330);
+        MAP_PRCMHibernateEnter();
+    }
+}
+
 void mperror_deinit_sfe_pin (void) {
     // disable the pull-down
     MAP_PinConfigSet(MICROPY_SAFE_BOOT_PIN_NUM, PIN_STRENGTH_4MA, PIN_TYPE_STD);
@@ -179,3 +199,38 @@ void nlr_jump_fail(void *val) {
     __fatal_error(NULL);
 #endif
 }
+
+#ifndef BOOTLOADER
+/******************************************************************************/
+// Micro Python bindings
+
+/// \function enable()
+/// Enables the heartbeat signal
+STATIC mp_obj_t pyb_enable_heartbeat(mp_obj_t self) {
+    mperror_enable_heartbeat ();
+    return mp_const_none;
+}
+STATIC MP_DEFINE_CONST_FUN_OBJ_1(pyb_enable_heartbeat_obj, pyb_enable_heartbeat);
+
+/// \function disable()
+/// Disables the heartbeat signal
+STATIC mp_obj_t pyb_disable_heartbeat(mp_obj_t self) {
+    mperror_disable_heartbeat ();
+    return mp_const_none;
+}
+STATIC MP_DEFINE_CONST_FUN_OBJ_1(pyb_disable_heartbeat_obj, pyb_disable_heartbeat);
+
+STATIC const mp_map_elem_t pyb_heartbeat_locals_dict_table[] = {
+    { MP_OBJ_NEW_QSTR(MP_QSTR_enable),    (mp_obj_t)&pyb_enable_heartbeat_obj },
+    { MP_OBJ_NEW_QSTR(MP_QSTR_disable),   (mp_obj_t)&pyb_disable_heartbeat_obj },
+};
+STATIC MP_DEFINE_CONST_DICT(pyb_heartbeat_locals_dict, pyb_heartbeat_locals_dict_table);
+
+static const mp_obj_type_t pyb_heartbeat_type = {
+    { &mp_type_type },
+    .name = MP_QSTR_HeartBeat,
+    .locals_dict = (mp_obj_t)&pyb_heartbeat_locals_dict,
+};
+
+const mp_obj_base_t pyb_heartbeat_obj = {&pyb_heartbeat_type};
+#endif

cc3200/misc/mperror.h

@@ -28,9 +28,14 @@
 #ifndef MPERROR_H_
 #define MPERROR_H_
 
+#ifndef BOOTLOADER
+extern const mp_obj_base_t pyb_heartbeat_obj;
+#endif
+
 extern void NORETURN __fatal_error(const char *msg);
 
 void mperror_init0 (void);
+void mperror_check_reset_cause (void);
 void mperror_deinit_sfe_pin (void);
 void mperror_signal_error (void);
 void mperror_request_safe_boot (void);

cc3200/mods/modpyb.c

@@ -271,46 +271,6 @@ STATIC mp_obj_t pyb_mkdisk(mp_obj_t path_o) {
 }
 STATIC MP_DEFINE_CONST_FUN_OBJ_1(pyb_mkdisk_obj, pyb_mkdisk);
 
-/// \function wdt_enable('msec')
-/// Enabled the watchdog timer with msec timeout value
-STATIC mp_obj_t pyb_enable_wdt(mp_obj_t msec_in) {
-    mp_int_t msec = mp_obj_get_int(msec_in);
-    pybwdt_ret_code_t ret;
-    ret = pybwdt_enable (msec);
-    if (ret == E_PYBWDT_IS_RUNNING) {
-        nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError, mpexception_os_request_not_possible));
-    }
-    else if (ret == E_PYBWDT_INVALID_TIMEOUT) {
-        nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError, mpexception_value_invalid_arguments));
-    }
-    return mp_const_none;
-}
-STATIC MP_DEFINE_CONST_FUN_OBJ_1(pyb_enable_wdt_obj, pyb_enable_wdt);
-
-/// \function wdt_kick()
-/// Kicks the watchdog timer
-STATIC mp_obj_t pyb_kick_wdt(void) {
-    pybwdt_kick ();
-    return mp_const_none;
-}
-STATIC MP_DEFINE_CONST_FUN_OBJ_0(pyb_kick_wdt_obj, pyb_kick_wdt);
-
-/// \function enable_heartbeat()
-/// Enables the heartbeat signal
-STATIC mp_obj_t pyb_enable_heartbeat(void) {
-    mperror_enable_heartbeat ();
-    return mp_const_none;
-}
-STATIC MP_DEFINE_CONST_FUN_OBJ_0(pyb_enable_heartbeat_obj, pyb_enable_heartbeat);
-
-/// \function disable_heartbeat()
-/// Disables the heartbeat signal
-STATIC mp_obj_t pyb_disable_heartbeat(void) {
-    mperror_disable_heartbeat ();
-    return mp_const_none;
-}
-STATIC MP_DEFINE_CONST_FUN_OBJ_0(pyb_disable_heartbeat_obj, pyb_disable_heartbeat);
-
 MP_DECLARE_CONST_FUN_OBJ(pyb_main_obj); // defined in main.c
 
 STATIC const mp_map_elem_t pyb_module_globals_table[] = {
@@ -342,10 +302,6 @@ STATIC const mp_map_elem_t pyb_module_globals_table[] = {
     { MP_OBJ_NEW_QSTR(MP_QSTR_udelay),              (mp_obj_t)&pyb_udelay_obj },
     { MP_OBJ_NEW_QSTR(MP_QSTR_sync),                (mp_obj_t)&pyb_sync_obj },
     { MP_OBJ_NEW_QSTR(MP_QSTR_mkdisk),              (mp_obj_t)&pyb_mkdisk_obj },
-    { MP_OBJ_NEW_QSTR(MP_QSTR_enable_wdt),          (mp_obj_t)&pyb_enable_wdt_obj },
-    { MP_OBJ_NEW_QSTR(MP_QSTR_kick_wdt),            (mp_obj_t)&pyb_kick_wdt_obj },
-    { MP_OBJ_NEW_QSTR(MP_QSTR_enable_heartbeat),    (mp_obj_t)&pyb_enable_heartbeat_obj },
-    { MP_OBJ_NEW_QSTR(MP_QSTR_disable_heartbeat),   (mp_obj_t)&pyb_disable_heartbeat_obj },
 
 #if MICROPY_HW_ENABLE_RNG
     { MP_OBJ_NEW_QSTR(MP_QSTR_rng),                 (mp_obj_t)&pyb_rng_get_obj },
@@ -360,6 +316,8 @@ STATIC const mp_map_elem_t pyb_module_globals_table[] = {
     { MP_OBJ_NEW_QSTR(MP_QSTR_ADC),                 (mp_obj_t)&pyb_adc_type },
     { MP_OBJ_NEW_QSTR(MP_QSTR_I2C),                 (mp_obj_t)&pyb_i2c_type },
     { MP_OBJ_NEW_QSTR(MP_QSTR_UART),                (mp_obj_t)&pyb_uart_type },
+    { MP_OBJ_NEW_QSTR(MP_QSTR_WDT),                 (mp_obj_t)&pyb_wdt_obj },
+    { MP_OBJ_NEW_QSTR(MP_QSTR_HeartBeat),           (mp_obj_t)&pyb_heartbeat_obj },
 
 #if MICROPY_HW_HAS_SDCARD
     { MP_OBJ_NEW_QSTR(MP_QSTR_SD),                  (mp_obj_t)&pyb_sd_type },

cc3200/mods/pybwdt.c

@@ -39,6 +39,8 @@
 #include "prcm.h"
 #include "utils.h"
 #include "pybwdt.h"
+#include "mpexception.h"
+#include "mperror.h"
 
 
 /******************************************************************************
@@ -65,59 +67,11 @@ static  pybwdt_data_t   pybwdt_data;
  DEFINE PUBLIC FUNCTIONS
  ******************************************************************************/
 // must be called in main.c just after initializing the hal
+__attribute__ ((section (".boot")))
 void pybwdt_init0 (void) {
     pybwdt_data.running = false;
 }
 
-void pybwdt_check_reset_cause (void) {
-    // if we are recovering from a WDT reset, trigger
-    // a hibernate cycle for a clean boot
-    if (MAP_PRCMSysResetCauseGet() == PRCM_WDT_RESET) {
-        HWREG(0x400F70B8) = 1;
-        UtilsDelay(800000/5);
-        HWREG(0x400F70B0) = 1;
-        UtilsDelay(800000/5);
-
-        HWREG(0x4402E16C) |= 0x2;
-        UtilsDelay(800);
-        HWREG(0x4402F024) &= 0xF7FFFFFF;
-
-        MAP_PRCMHibernateWakeupSourceEnable(PRCM_HIB_SLOW_CLK_CTR);
-        // set the sleep interval to 10ms
-        MAP_PRCMHibernateIntervalSet(330);
-        MAP_PRCMHibernateEnter();
-    }
-}
-
-// minimum timeout value is 500ms
-pybwdt_ret_code_t pybwdt_enable (uint32_t timeout) {
-    if (timeout >= PYBWDT_MIN_TIMEOUT_MS) {
-        if (!pybwdt_data.running) {
-            // Enable the WDT peripheral clock
-            MAP_PRCMPeripheralClkEnable(PRCM_WDT, PRCM_RUN_MODE_CLK | PRCM_SLP_MODE_CLK);
-
-            // Unlock to be able to configure the registers
-            MAP_WatchdogUnlock(WDT_BASE);
-
-            // Make the WDT stall when the debugger stops on a breakpoint
-            MAP_WatchdogStallEnable (WDT_BASE);
-
-            // Set the watchdog timer reload value
-            // the WDT trigger a system reset after the second timeout
-            // so, divide by the 2 timeout value received
-            MAP_WatchdogReloadSet(WDT_BASE, PYBWDT_MILLISECONDS_TO_TICKS(timeout / 2));
-
-            // Start the timer. Once the timer is started, it cannot be disabled.
-            MAP_WatchdogEnable(WDT_BASE);
-            pybwdt_data.running = true;
-
-            return E_PYBWDT_OK;
-        }
-        return E_PYBWDT_IS_RUNNING;
-    }
-    return E_PYBWDT_INVALID_TIMEOUT;
-}
-
 void pybwdt_kick (void) {
     // check that the servers and simplelink are running fine
     if (pybwdt_data.servers && pybwdt_data.simplelink && pybwdt_data.running) {
@@ -134,3 +88,62 @@ void pybwdt_srv_alive (void) {
 void pybwdt_sl_alive (void) {
     pybwdt_data.simplelink = true;
 }
+
+/******************************************************************************/
+// Micro Python bindings
+
+/// \function wdt_enable('msec')
+/// Enabled the watchdog timer with msec timeout value
+STATIC mp_obj_t pyb_enable_wdt(mp_obj_t self, mp_obj_t msec_in) {
+    mp_int_t msec = mp_obj_get_int(msec_in);
+
+    if (msec < PYBWDT_MIN_TIMEOUT_MS) {
+        nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError, mpexception_value_invalid_arguments));
+    }
+    if (pybwdt_data.running) {
+        nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError, mpexception_os_request_not_possible));
+    }
+
+    // Enable the WDT peripheral clock
+    MAP_PRCMPeripheralClkEnable(PRCM_WDT, PRCM_RUN_MODE_CLK | PRCM_SLP_MODE_CLK);
+
+    // Unlock to be able to configure the registers
+    MAP_WatchdogUnlock(WDT_BASE);
+
+    // make the WDT stall when the debugger stops on a breakpoint
+    MAP_WatchdogStallEnable (WDT_BASE);
+
+    // set the watchdog timer reload value
+    // the WDT trigger a system reset after the second timeout
+    // so, divide by the 2 timeout value received
+    MAP_WatchdogReloadSet(WDT_BASE, PYBWDT_MILLISECONDS_TO_TICKS(msec / 2));
+
+    // start the timer. Once wdt is started, it cannot be disabled.
+    MAP_WatchdogEnable(WDT_BASE);
+    pybwdt_data.running = true;
+
+    return mp_const_none;
+}
+STATIC MP_DEFINE_CONST_FUN_OBJ_2(pyb_enable_wdt_obj, pyb_enable_wdt);
+
+/// \function wdt_kick()
+/// Kicks the watchdog timer
+STATIC mp_obj_t pyb_kick_wdt(mp_obj_t self) {
+    pybwdt_kick ();
+    return mp_const_none;
+}
+STATIC MP_DEFINE_CONST_FUN_OBJ_1(pyb_kick_wdt_obj, pyb_kick_wdt);
+
+STATIC const mp_map_elem_t pybwdt_locals_dict_table[] = {
+    { MP_OBJ_NEW_QSTR(MP_QSTR_enable), (mp_obj_t)&pyb_enable_wdt_obj },
+    { MP_OBJ_NEW_QSTR(MP_QSTR_kick),   (mp_obj_t)&pyb_kick_wdt_obj },
+};
+STATIC MP_DEFINE_CONST_DICT(pybwdt_locals_dict, pybwdt_locals_dict_table);
+
+static const mp_obj_type_t pybwdt_type = {
+    { &mp_type_type },
+    .name = MP_QSTR_WDT,
+    .locals_dict = (mp_obj_t)&pybwdt_locals_dict,
+};
+
+const mp_obj_base_t pyb_wdt_obj = {&pybwdt_type};

cc3200/mods/pybwdt.h

@@ -27,15 +27,11 @@
 #ifndef PYBWDT_H_
 #define PYBWDT_H_
 
-typedef enum {
+#include "py/obj.h"
-    E_PYBWDT_OK = 0,
+
-    E_PYBWDT_IS_RUNNING = -1,
+extern const mp_obj_base_t pyb_wdt_obj;
-    E_PYBWDT_INVALID_TIMEOUT = -2
-}pybwdt_ret_code_t;
 
 void pybwdt_init0 (void);
-void pybwdt_check_reset_cause (void);
-pybwdt_ret_code_t pybwdt_enable (uint32_t timeout);
 void pybwdt_kick (void);
 void pybwdt_srv_alive (void);
 void pybwdt_sl_alive (void);

cc3200/qstrdefsport.h

@@ -36,10 +36,8 @@ Q(udelay)
 Q(flush)
 Q(FileIO)
 Q(mkdisk)
-Q(enable_wdt)
+Q(enable)
-Q(kick_wdt)
+Q(disable)
-Q(enable_heartbeat)
-Q(disable_heartbeat)
 // Entries for sys.path
 Q(/SFLASH)
 Q(/SFLASH/LIB)
@@ -105,8 +103,6 @@ Q(pin)
 Q(mode)
 Q(pull)
 Q(callback)
-Q(enable)
-Q(disable)
 Q(swint)
 Q(IRQ_RISING)
 Q(IRQ_FALLING)
@@ -159,13 +155,9 @@ Q(SLAVE)
 // for ADC class
 Q(ADC)
 Q(read)
-Q(enable)
-Q(disable)
 
 // for SD class
 Q(SD)
-Q(enable)
-Q(disable)
 
 // for RTC class
 Q(RTC)
@@ -250,3 +242,11 @@ Q(LOW_LATENCY_PM)
 Q(LOW_POWER_PM)
 Q(ALWAYS_ON_PM)
 Q(LONG_SLEEP_PM)
+
+// for WDT class
+Q(WDT)
+Q(kick)
+
+// for HeartBeat class
+Q(HeartBeat)
+