165 lines
4.1 KiB
C
165 lines
4.1 KiB
C
#include <stdio.h>
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#include <stm32f4xx.h>
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#include <stm32f4xx_gpio.h>
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#include "misc.h"
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#include "mpconfig.h"
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#include "qstr.h"
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#include "obj.h"
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#include "led.h"
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/* LED numbers, used internally */
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#define PYB_LED_1 (1)
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#define PYB_LED_2 (2)
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#define PYB_LED_3 (3)
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#define PYB_LED_4 (4)
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void led_init(void) {
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/* GPIO structure */
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GPIO_InitTypeDef GPIO_InitStructure;
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/* Configure I/O speed, mode, output type and pull */
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
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GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
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GPIO_InitStructure.GPIO_OType = PYB_OTYPE;
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/* Turn off LEDs */
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PYB_LED_OFF(PYB_LED1_PORT, PYB_LED1_PIN);
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PYB_LED_OFF(PYB_LED2_PORT, PYB_LED2_PIN);
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PYB_LED_OFF(PYB_LED3_PORT, PYB_LED3_PIN);
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PYB_LED_OFF(PYB_LED4_PORT, PYB_LED4_PIN);
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/* Initialize LEDs */
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GPIO_InitStructure.GPIO_Pin = PYB_LED1_PIN;
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GPIO_Init(PYB_LED1_PORT, &GPIO_InitStructure);
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GPIO_InitStructure.GPIO_Pin = PYB_LED2_PIN;
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GPIO_Init(PYB_LED2_PORT, &GPIO_InitStructure);
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GPIO_InitStructure.GPIO_Pin = PYB_LED3_PIN;
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GPIO_Init(PYB_LED3_PORT, &GPIO_InitStructure);
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GPIO_InitStructure.GPIO_Pin = PYB_LED4_PIN;
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GPIO_Init(PYB_LED4_PORT, &GPIO_InitStructure);
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}
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void led_state(pyb_led_t led, int state) {
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GPIO_TypeDef *port;
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uint32_t pin;
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switch (led) {
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case PYB_LED_1:
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pin = PYB_LED1_PIN;
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port = PYB_LED1_PORT;
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break;
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case PYB_LED_2:
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pin = PYB_LED2_PIN;
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port = PYB_LED2_PORT;
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break;
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case PYB_LED_3:
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pin = PYB_LED3_PIN;
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port = PYB_LED3_PORT;
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break;
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case PYB_LED_4:
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pin = PYB_LED4_PIN;
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port = PYB_LED4_PORT;
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break;
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default:
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return;
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}
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if (state == 0) {
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// turn LED off
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PYB_LED_OFF(port, pin);
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} else {
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// turn LED on
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PYB_LED_ON(port, pin);
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}
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}
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void led_toggle(pyb_led_t led) {
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GPIO_TypeDef *port;
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uint32_t pin;
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switch (led) {
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case PYB_LED_1:
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pin = PYB_LED1_PIN;
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port = PYB_LED1_PORT;
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break;
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case PYB_LED_2:
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pin = PYB_LED2_PIN;
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port = PYB_LED2_PORT;
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break;
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case PYB_LED_3:
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pin = PYB_LED3_PIN;
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port = PYB_LED3_PORT;
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break;
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case PYB_LED_4:
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pin = PYB_LED4_PIN;
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port = PYB_LED4_PORT;
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break;
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default:
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return;
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}
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// XXX this assumes LED is driven by a high MCU output (false for PYBv3, true for PYBv4)
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if (port->ODR & pin) {
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// turn LED off
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PYB_LED_OFF(port, pin);
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} else {
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// turn LED on (output low)
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PYB_LED_ON(port, pin);
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}
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}
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/******************************************************************************/
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/* Micro Python bindings */
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typedef struct _pyb_led_obj_t {
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mp_obj_base_t base;
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uint led_id;
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} pyb_led_obj_t;
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void led_obj_print(void (*print)(void *env, const char *fmt, ...), void *env, mp_obj_t self_in, mp_print_kind_t kind) {
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pyb_led_obj_t *self = self_in;
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print(env, "<LED %lu>", self->led_id);
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}
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mp_obj_t led_obj_on(mp_obj_t self_in) {
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pyb_led_obj_t *self = self_in;
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led_state(self->led_id, 1);
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return mp_const_none;
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}
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mp_obj_t led_obj_off(mp_obj_t self_in) {
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pyb_led_obj_t *self = self_in;
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led_state(self->led_id, 0);
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return mp_const_none;
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}
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static MP_DEFINE_CONST_FUN_OBJ_1(led_obj_on_obj, led_obj_on);
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static MP_DEFINE_CONST_FUN_OBJ_1(led_obj_off_obj, led_obj_off);
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static const mp_method_t led_methods[] = {
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{ "on", &led_obj_on_obj },
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{ "off", &led_obj_off_obj },
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{ NULL, NULL },
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};
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static const mp_obj_type_t led_obj_type = {
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{ &mp_type_type },
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.name = MP_QSTR_Led,
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.print = led_obj_print,
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.methods = led_methods,
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};
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static mp_obj_t pyb_Led(mp_obj_t led_id) {
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pyb_led_obj_t *o = m_new_obj(pyb_led_obj_t);
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o->base.type = &led_obj_type;
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o->led_id = mp_obj_get_int(led_id);
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return o;
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}
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MP_DEFINE_CONST_FUN_OBJ_1(pyb_Led_obj, pyb_Led);
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