circuitpython/ports/mimxrt/boards/mimxrt_prefix.c
Philipp Ebensberger 87f97e490c mimxrt/sdcard: Implement SDCard driver.
- Configures `PLL2->PFD0` with **198MHz** as base clock of
	`USDHCx` peripheral.
- Adds guards for SDCard related files via `MICROPY_PY_MACHINE_SDCARD`
- Adds creation of pin defines for SDCard to make-pins.py
- Adds new configuration option for SDCard peripheral pinout
        to mpconfigport.h
- Adds interrupt handling support instead of polling
- Adds support for `ADMA2` powered data transfer
- Configures SDCard to run in HS (high-speed mode) with **50MHz** only!

SDCard support is optional and requires `USDHC` peripheral.
Thus this driver is not available on `MIMXRT1010_EVK`.
SDCard support is enabled by setting `MICROPY_PY_MACHINE_SDCARD = 1`
in mpconfigboard.mk.

Signed-off-by: Philipp Ebensberger
2021-09-07 20:45:33 +02:00

38 lines
1.2 KiB
C

#include <stdio.h>
#include "py/obj.h"
#include "py/mphal.h"
#include "pin.h"
#define PIN_AF(_name, _af_mode, _input_daisy, _instance, _input_register, _pad_config) \
{ \
.base = { &machine_pin_af_type }, \
.name = MP_QSTR_##_name, \
.af_mode = (uint32_t)(_af_mode), \
.input_daisy = (uint8_t)(_input_daisy), \
.instance = (void *)(_instance), \
.input_register = (uint32_t)(_input_register), \
.pad_config = (uint32_t)(_pad_config), \
} \
#define PIN_ADC(_instance, _channel) \
{ \
.instance = (_instance), \
.channel = (_channel) \
} \
#define PIN(_name, _gpio, _pin, _af_list, _adc_list_len, _adc_list) \
{ \
.base = { &machine_pin_type }, \
.name = MP_QSTR_##_name, \
.gpio = (_gpio), \
.pin = (uint32_t)(_pin), \
.muxRegister = (uint32_t)&(IOMUXC->SW_MUX_CTL_PAD[kIOMUXC_SW_MUX_CTL_PAD_##_name]), \
.configRegister = (uint32_t)&(IOMUXC->SW_PAD_CTL_PAD[kIOMUXC_SW_PAD_CTL_PAD_##_name]), \
.af_list_len = (uint8_t)(sizeof((_af_list)) / sizeof(machine_pin_af_obj_t)), \
.adc_list_len = (_adc_list_len), \
.af_list = (_af_list), \
.adc_list = (_adc_list), \
} \