mimxrt/machine_adc: Add the ADC class to the machine module.
This adds the machine.ADC class with the read_u16() method. make-pins.py and supporting files are updated to generate ADC information.
This commit is contained in:
parent
bbdc98f72e
commit
b8c65b174f
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@ -111,10 +111,11 @@ SRC_TINYUSB_C += \
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lib/tinyusb/src/class/vendor/vendor_device.c \
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lib/tinyusb/src/class/vendor/vendor_device.c \
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lib/tinyusb/src/portable/nxp/transdimension/dcd_transdimension.c
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lib/tinyusb/src/portable/nxp/transdimension/dcd_transdimension.c
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SRC_TINYUSB_IMX_C += \
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SRC_HAL_IMX_C += \
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$(MCU_DIR)/system_$(MCU_SERIES).c \
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$(MCU_DIR)/system_$(MCU_SERIES).c \
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$(MCU_DIR)/xip/fsl_flexspi_nor_boot.c \
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$(MCU_DIR)/xip/fsl_flexspi_nor_boot.c \
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$(MCU_DIR)/project_template/clock_config.c \
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$(MCU_DIR)/project_template/clock_config.c \
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$(MCU_DIR)/drivers/fsl_adc.c \
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$(MCU_DIR)/drivers/fsl_clock.c \
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$(MCU_DIR)/drivers/fsl_clock.c \
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$(MCU_DIR)/drivers/fsl_gpio.c \
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$(MCU_DIR)/drivers/fsl_gpio.c \
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$(MCU_DIR)/drivers/fsl_gpt.c \
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$(MCU_DIR)/drivers/fsl_gpt.c \
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@ -134,6 +135,7 @@ SRC_C = \
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tusb_port.c \
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tusb_port.c \
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board_init.c \
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board_init.c \
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$(BOARD_DIR)/flash_config.c \
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$(BOARD_DIR)/flash_config.c \
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machine_adc.c \
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machine_led.c \
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machine_led.c \
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machine_pin.c \
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machine_pin.c \
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machine_rtc.c \
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machine_rtc.c \
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@ -155,7 +157,7 @@ SRC_C = \
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drivers/bus/softspi.c \
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drivers/bus/softspi.c \
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extmod/modonewire.c \
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extmod/modonewire.c \
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$(SRC_TINYUSB_C) \
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$(SRC_TINYUSB_C) \
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$(SRC_TINYUSB_IMX_C) \
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$(SRC_HAL_IMX_C) \
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ifeq ($(MICROPY_FLOAT_IMPL),double)
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ifeq ($(MICROPY_FLOAT_IMPL),double)
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LIBM_SRC_C += $(addprefix lib/libm_dbl/,\
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LIBM_SRC_C += $(addprefix lib/libm_dbl/,\
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@ -256,6 +258,7 @@ SRC_S = lib/utils/gchelper_m3.s \
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# List of sources for qstr extraction
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# List of sources for qstr extraction
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SRC_QSTR += \
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SRC_QSTR += \
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machine_adc.c \
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machine_led.c \
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machine_led.c \
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machine_pin.c \
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machine_pin.c \
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machine_rtc.c \
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machine_rtc.c \
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@ -80,6 +80,9 @@ void board_init(void) {
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// CLOCK_EnableUsbhs1PhyPllClock(kCLOCK_Usbphy480M, 480000000U);
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// CLOCK_EnableUsbhs1PhyPllClock(kCLOCK_Usbphy480M, 480000000U);
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// CLOCK_EnableUsbhs1Clock(kCLOCK_Usb480M, 480000000U);
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// CLOCK_EnableUsbhs1Clock(kCLOCK_Usb480M, 480000000U);
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// ADC
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machine_adc_init();
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// PIT
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// PIT
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machine_timer_init_PIT();
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machine_timer_init_PIT();
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}
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}
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@ -6,9 +6,11 @@ from __future__ import print_function
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import argparse
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import argparse
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import sys
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import sys
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import csv
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import csv
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import re
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SUPPORTED_AFS = {"GPIO"}
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SUPPORTED_AFS = {"GPIO"}
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MAX_AF = 10 # AF0 .. AF9
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MAX_AF = 10 # AF0 .. AF9
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ADC_COL = 11
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def parse_pad(pad_str):
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def parse_pad(pad_str):
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@ -38,7 +40,7 @@ class Pin(object):
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self.gpio = gpio
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self.gpio = gpio
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self.pin = pin
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self.pin = pin
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self.alt_fn = []
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self.alt_fn = []
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self.adc_channel = 0
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self.adc_fns = []
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self.board_pin = False
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self.board_pin = False
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def set_is_board_pin(self):
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def set_is_board_pin(self):
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@ -48,7 +50,13 @@ class Pin(object):
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return self.board_pin
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return self.board_pin
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def parse_adc(self, adc_str):
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def parse_adc(self, adc_str):
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pass
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adc_regex = r"ADC(?P<instance>\d*)_IN(?P<channel>\d*)"
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matches = re.finditer(adc_regex, adc_str, re.MULTILINE)
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for match in matches:
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self.adc_fns.append(
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AdcFunction(instance=match.group("instance"), channel=match.group("channel"))
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)
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def parse_af(self, af_idx, af_strs_in):
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def parse_af(self, af_idx, af_strs_in):
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pass
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pass
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@ -69,14 +77,34 @@ class Pin(object):
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else:
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else:
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raise ValueError("Pin '{}' has no alternative functions".format(self.name))
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raise ValueError("Pin '{}' has no alternative functions".format(self.name))
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def print_pin_adc(self):
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if self.adc_fns:
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print(
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"static const machine_pin_adc_obj_t pin_{0}_adc[{1}] = {{".format(
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self.name, len(self.adc_fns)
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)
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)
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for adc_fn in self.adc_fns:
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adc_fn.print()
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print("};")
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def print(self):
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def print(self):
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if self.alt_fn:
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if self.alt_fn:
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self.print_pin_af()
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self.print_pin_af()
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print(
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self.print_pin_adc()
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"const machine_pin_obj_t pin_{0} = PIN({0}, {1}, {2}, pin_{3});\n".format(
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self.name, self.gpio, int(self.pin), self.name + "_af"
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if self.adc_fns:
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print(
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"const machine_pin_obj_t pin_{0} = PIN({0}, {1}, {2}, pin_{0}_af, {3}, pin_{0}_adc);\n".format(
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self.name, self.gpio, int(self.pin), len(self.adc_fns)
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)
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)
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else:
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print(
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"const machine_pin_obj_t pin_{0} = PIN({0}, {1}, {2}, pin_{0}_af, {3}, NULL);\n".format(
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self.name, self.gpio, int(self.pin), len(self.adc_fns)
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)
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)
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)
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)
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else:
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else:
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raise ValueError("Pin '{}' has no alternative functions".format(self.name))
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raise ValueError("Pin '{}' has no alternative functions".format(self.name))
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@ -84,6 +112,18 @@ class Pin(object):
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pass
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pass
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class AdcFunction(object):
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"""Holds the information associated with a pins ADC function."""
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def __init__(self, instance, channel):
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self.instance = instance
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self.channel = channel
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def print(self):
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"""Prints the C representation of this AF."""
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print(f" PIN_ADC(ADC{self.instance}, {self.channel}),")
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class AlternateFunction(object):
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class AlternateFunction(object):
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"""Holds the information associated with a pins alternate function."""
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"""Holds the information associated with a pins alternate function."""
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@ -149,6 +189,8 @@ class Pins(object):
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if af and af_supported(af):
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if af and af_supported(af):
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pin.add_af(AlternateFunction(af_idx, af))
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pin.add_af(AlternateFunction(af_idx, af))
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pin.parse_adc(row[ADC_COL])
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self.cpu_pins.append(pin)
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self.cpu_pins.append(pin)
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@staticmethod
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@staticmethod
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@ -13,7 +13,13 @@
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.pad_config = (uint32_t)(_pad_config), \
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.pad_config = (uint32_t)(_pad_config), \
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} \
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} \
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#define PIN(_name, _gpio, _pin, _af_list) \
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#define PIN_ADC(_instance, _channel) \
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{ \
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.instance = (_instance), \
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.channel = (_channel) \
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} \
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#define PIN(_name, _gpio, _pin, _af_list, _adc_list_len, _adc_list) \
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{ \
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{ \
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.base = { &machine_pin_type }, \
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.base = { &machine_pin_type }, \
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.name = MP_QSTR_##_name, \
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.name = MP_QSTR_##_name, \
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@ -21,6 +27,8 @@
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.pin = (uint32_t)(_pin), \
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.pin = (uint32_t)(_pin), \
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.muxRegister = (uint32_t)&(IOMUXC->SW_MUX_CTL_PAD[kIOMUXC_SW_MUX_CTL_PAD_##_name]), \
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.muxRegister = (uint32_t)&(IOMUXC->SW_MUX_CTL_PAD[kIOMUXC_SW_MUX_CTL_PAD_##_name]), \
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.configRegister = (uint32_t)&(IOMUXC->SW_PAD_CTL_PAD[kIOMUXC_SW_PAD_CTL_PAD_##_name]), \
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.configRegister = (uint32_t)&(IOMUXC->SW_PAD_CTL_PAD[kIOMUXC_SW_PAD_CTL_PAD_##_name]), \
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.af_list_len = (size_t)(sizeof((_af_list)) / sizeof(machine_pin_af_obj_t)), \
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.af_list_len = (uint8_t)(sizeof((_af_list)) / sizeof(machine_pin_af_obj_t)), \
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.adc_list_len = (_adc_list_len), \
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.af_list = (_af_list), \
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.af_list = (_af_list), \
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.adc_list = (_adc_list), \
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} \
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} \
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@ -0,0 +1,145 @@
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/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2021 Philipp Ebensberger
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <stdint.h>
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#include "py/obj.h"
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#include "py/runtime.h"
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#include "py/mphal.h"
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#include "fsl_adc.h"
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#include "fsl_gpio.h"
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#include "fsl_iomuxc.h"
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#include "modmachine.h"
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typedef struct _machine_adc_obj_t {
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mp_obj_base_t base;
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ADC_Type *adc;
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uint8_t channel;
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uint8_t channel_group;
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uint16_t resolution;
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} machine_adc_obj_t;
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STATIC ADC_Type *const adc_bases[] = ADC_BASE_PTRS;
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STATIC void adc_obj_print(const mp_print_t *print, mp_obj_t o, mp_print_kind_t kind) {
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(void)kind;
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machine_adc_obj_t *self = MP_OBJ_TO_PTR(o);
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// Get ADC adc id
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for (int i = 1; i < sizeof(adc_bases) / sizeof(ADC_Type *); ++i) {
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if (adc_bases[i] == self->adc) {
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mp_printf(print, "ADC(%u, channel=%u)", i, self->channel);
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break;
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}
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}
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}
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STATIC mp_obj_t adc_obj_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *args) {
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mp_arg_check_num(n_args, n_kw, 1, 1, false);
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// Unpack and check parameter
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const machine_pin_obj_t *pin = pin_find(args[0]);
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if (pin->adc_list_len == 0) {
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mp_raise_msg_varg(&mp_type_ValueError, MP_ERROR_TEXT("Pin(%q) does not have ADC capabilities"), pin->name);
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}
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// Extract arguments
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ADC_Type *adc_instance = pin->adc_list[0].instance; // NOTE: we only use the first ADC assignment - multiple assignments are not supported for now
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uint8_t channel = pin->adc_list[0].channel;
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// Configure ADC peripheral channel
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adc_channel_config_t channel_config = {
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.channelNumber = (uint32_t)channel,
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.enableInterruptOnConversionCompleted = false,
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};
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ADC_SetChannelConfig(adc_instance, 0UL, &channel_config); // NOTE: we always choose channel group '0' since we only perform software triggered conversion
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// Create ADC Instance
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machine_adc_obj_t *o = m_new_obj(machine_adc_obj_t);
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o->base.type = &machine_adc_type;
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o->adc = adc_instance;
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o->channel = (uint8_t)channel;
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o->channel_group = 0;
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o->resolution = 4096; // NOTE: currently only 12bit resolution supported
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return MP_OBJ_FROM_PTR(o);
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}
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// read_u16()
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STATIC mp_obj_t machine_adc_read_u16(mp_obj_t self_in) {
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machine_adc_obj_t *self = MP_OBJ_TO_PTR(self_in);
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// Initiate conversion
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adc_channel_config_t channel_config = {
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.channelNumber = self->channel,
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.enableInterruptOnConversionCompleted = false,
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};
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ADC_SetChannelConfig(self->adc, (uint32_t)self->channel_group, &channel_config);
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// Wait for conversion to finish
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while (!ADC_GetChannelStatusFlags(self->adc, (uint32_t)self->channel_group)) {
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// do nothing
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}
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// Measure input voltage
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uint32_t value = ADC_GetChannelConversionValue(self->adc, (uint32_t)self->channel_group);
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return MP_OBJ_NEW_SMALL_INT(value * 65535 / self->resolution);
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_1(machine_adc_read_u16_obj, machine_adc_read_u16);
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STATIC const mp_rom_map_elem_t adc_locals_dict_table[] = {
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{ MP_ROM_QSTR(MP_QSTR_read_u16), MP_ROM_PTR(&machine_adc_read_u16_obj) },
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};
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STATIC MP_DEFINE_CONST_DICT(adc_locals_dict, adc_locals_dict_table);
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const mp_obj_type_t machine_adc_type = {
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{&mp_type_type},
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.name = MP_QSTR_ADC,
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.print = adc_obj_print,
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.make_new = adc_obj_make_new,
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.locals_dict = (mp_obj_dict_t *)&adc_locals_dict,
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};
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void machine_adc_init(void) {
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for (int i = 1; i < sizeof(adc_bases) / sizeof(ADC_Type *); ++i) {
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ADC_Type *adc_instance = adc_bases[i];
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// Configure ADC perpheral
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adc_config_t config;
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ADC_GetDefaultConfig(&config);
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ADC_Init(adc_instance, &config);
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// Perform calibration
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status_t calib_state = ADC_DoAutoCalibration(adc_instance);
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if (calib_state == kStatus_Fail) {
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mp_printf(&mp_plat_print, "Calibration for ADC Instance %d failed", i);
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}
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}
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||||||
|
}
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@ -59,6 +59,7 @@ STATIC const mp_rom_map_elem_t machine_module_globals_table[] = {
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||||||
{ MP_ROM_QSTR(MP_QSTR_LED), MP_ROM_PTR(&machine_led_type) },
|
{ MP_ROM_QSTR(MP_QSTR_LED), MP_ROM_PTR(&machine_led_type) },
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||||||
#endif
|
#endif
|
||||||
{ MP_ROM_QSTR(MP_QSTR_Pin), MP_ROM_PTR(&machine_pin_type) },
|
{ MP_ROM_QSTR(MP_QSTR_Pin), MP_ROM_PTR(&machine_pin_type) },
|
||||||
|
{ MP_ROM_QSTR(MP_QSTR_ADC), MP_ROM_PTR(&machine_adc_type) },
|
||||||
{ MP_ROM_QSTR(MP_QSTR_Timer), MP_ROM_PTR(&machine_timer_type) },
|
{ MP_ROM_QSTR(MP_QSTR_Timer), MP_ROM_PTR(&machine_timer_type) },
|
||||||
{ MP_ROM_QSTR(MP_QSTR_RTC), MP_ROM_PTR(&machine_rtc_type) },
|
{ MP_ROM_QSTR(MP_QSTR_RTC), MP_ROM_PTR(&machine_rtc_type) },
|
||||||
{ MP_ROM_QSTR(MP_QSTR_Signal), MP_ROM_PTR(&machine_signal_type) },
|
{ MP_ROM_QSTR(MP_QSTR_Signal), MP_ROM_PTR(&machine_signal_type) },
|
||||||
|
|
|
@ -29,9 +29,11 @@
|
||||||
|
|
||||||
#include "py/obj.h"
|
#include "py/obj.h"
|
||||||
|
|
||||||
|
extern const mp_obj_type_t machine_adc_type;
|
||||||
extern const mp_obj_type_t machine_timer_type;
|
extern const mp_obj_type_t machine_timer_type;
|
||||||
extern const mp_obj_type_t machine_rtc_type;
|
extern const mp_obj_type_t machine_rtc_type;
|
||||||
|
|
||||||
|
void machine_adc_init(void);
|
||||||
void machine_timer_init_PIT(void);
|
void machine_timer_init_PIT(void);
|
||||||
|
|
||||||
#endif // MICROPY_INCLUDED_MIMXRT_MODMACHINE_H
|
#endif // MICROPY_INCLUDED_MIMXRT_MODMACHINE_H
|
||||||
|
|
|
@ -100,6 +100,11 @@ typedef struct {
|
||||||
uint32_t pad_config; // pad configuration for alternate function
|
uint32_t pad_config; // pad configuration for alternate function
|
||||||
} machine_pin_af_obj_t;
|
} machine_pin_af_obj_t;
|
||||||
|
|
||||||
|
typedef struct {
|
||||||
|
ADC_Type *instance;
|
||||||
|
uint8_t channel;
|
||||||
|
} machine_pin_adc_obj_t;
|
||||||
|
|
||||||
typedef struct {
|
typedef struct {
|
||||||
mp_obj_base_t base;
|
mp_obj_base_t base;
|
||||||
qstr name; // pad name
|
qstr name; // pad name
|
||||||
|
@ -107,8 +112,10 @@ typedef struct {
|
||||||
uint32_t pin; // pin number
|
uint32_t pin; // pin number
|
||||||
uint32_t muxRegister;
|
uint32_t muxRegister;
|
||||||
uint32_t configRegister;
|
uint32_t configRegister;
|
||||||
size_t af_list_len; // length of available alternate functions list
|
uint8_t af_list_len; // length of available alternate functions list
|
||||||
const machine_pin_af_obj_t *af_list; // pointer tolist with alternate functions
|
uint8_t adc_list_len; // length of available ADC options list
|
||||||
|
const machine_pin_af_obj_t *af_list; // pointer to list with alternate functions
|
||||||
|
const machine_pin_adc_obj_t *adc_list; // pointer to list with ADC options
|
||||||
} machine_pin_obj_t;
|
} machine_pin_obj_t;
|
||||||
|
|
||||||
// ------------------------------------------------------------------------------------------------------------------ //
|
// ------------------------------------------------------------------------------------------------------------------ //
|
||||||
|
|
Loading…
Reference in New Issue