circuitpython/ports/stm32/boards/stm32f4xx_prefix.c

// stm32f4xx_prefix.c becomes the initial portion of the generated pins file.

#include <stdio.h>

#include "py/obj.h"
#include "py/mphal.h"
#include "pin.h"

#define AF(af_idx, af_fn, af_unit, af_type, af_ptr) \
    { \
        { &pin_af_type }, \
        .name = MP_QSTR_AF##af_idx##_##af_fn##af_unit, \
        .idx = (af_idx), \
        .fn = AF_FN_##af_fn, \
        .unit = (af_unit), \
        .type = AF_PIN_TYPE_##af_fn##_##af_type, \
        .reg = (af_ptr) \
    }

#define PIN(p_port, p_pin, p_af, p_adc_num, p_adc_channel) \
    { \
        { &pin_type }, \
        .name = MP_QSTR_##p_port##p_pin, \
        .port = PORT_##p_port, \
        .pin = (p_pin), \
        .num_af = (sizeof(p_af) / sizeof(pin_af_obj_t)), \
        .pin_mask = (1 << ((p_pin) & 0x0f)), \
        .gpio = GPIO##p_port, \
        .af = p_af, \
        .adc_num = p_adc_num, \
        .adc_channel = p_adc_channel, \
    }