circuitpython/stm/pin_named_pins.c

68 lines
1.8 KiB
C

#include <stdio.h>
#include <stdint.h>
#include <string.h>
#include <stm32f4xx.h>
#include "misc.h"
#include "mpconfig.h"
#include "qstr.h"
#include "obj.h"
#include "runtime.h"
#include "pin.h"
static void pin_named_pins_obj_print(void (*print)(void *env, const char *fmt, ...), void *env, mp_obj_t self_in, mp_print_kind_t kind) {
pin_named_pins_obj_t *self = self_in;
print(env, "<Pin.%s>", self->name);
}
static void pin_named_pins_obj_load_attr(mp_obj_t self_in, qstr attr_qstr, mp_obj_t *dest) {
pin_named_pins_obj_t *self = self_in;
const char *attr = qstr_str(attr_qstr);
const pin_obj_t *pin = pin_find_named_pin(self->named_pins, attr);
if (pin) {
dest[0] = (mp_obj_t)pin;
dest[1] = MP_OBJ_NULL;
}
}
static const mp_obj_type_t pin_named_pins_obj_type = {
{ &mp_type_type },
.name = MP_QSTR_PinNamed,
.print = pin_named_pins_obj_print,
.load_attr = pin_named_pins_obj_load_attr,
};
const pin_named_pins_obj_t pin_board_pins_obj = {
{ &pin_named_pins_obj_type },
.name = "board",
.named_pins = pin_board_pins,
};
const pin_named_pins_obj_t pin_cpu_pins_obj = {
{ &pin_named_pins_obj_type },
.name = "cpu",
.named_pins = pin_cpu_pins,
};
const pin_obj_t *pin_find_named_pin(const pin_named_pin_t *named_pins, const char *name) {
const pin_named_pin_t *named_pin = named_pins;
while (named_pin->name) {
if (!strcmp(name, named_pin->name)) {
return named_pin->pin;
}
named_pin++;
}
return NULL;
}
const pin_af_obj_t *pin_find_af(const pin_obj_t *pin, uint8_t fn, uint8_t unit, uint8_t type) {
const pin_af_obj_t *af = pin->af;
for (int i = 0; i < pin->num_af; i++, af++) {
if (af->fn == fn && af->unit == unit && af->type == type) {
return af;
}
}
return NULL;
}