55 lines
1.3 KiB
C
55 lines
1.3 KiB
C
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#include <libopencm3/stm32/rcc.h>
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#include <libopencm3/stm32/gpio.h>
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#include <stdint.h>
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#include <stdio.h>
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#include "buttons.h"
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#define BUTTON_RCC RCC_GPIOA
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#define BUTTON_PORT GPIOA
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#define OPEN_BUTTON GPIO6
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#define CLOSE_BUTTON GPIO7
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void buttons_setup() {
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rcc_periph_clock_enable(BUTTON_RCC);
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gpio_mode_setup(BUTTON_PORT, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, OPEN_BUTTON | CLOSE_BUTTON);
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gpio_set_output_options(BUTTON_PORT, GPIO_OTYPE_OD, GPIO_OSPEED_2MHZ, OPEN_BUTTON | CLOSE_BUTTON);
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}
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static uint32_t open_ticks = 0;
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static uint32_t close_ticks = 0;
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void buttons_open(uint32_t ticks) {
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gpio_set(BUTTON_PORT, OPEN_BUTTON);
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printf("Open %lu", ticks);
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open_ticks = ticks;
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}
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void buttons_close(uint32_t ticks) {
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gpio_set(BUTTON_PORT, CLOSE_BUTTON);
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printf("Close %lu", ticks);
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close_ticks = ticks;
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}
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void buttons_release(void) {
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open_ticks = close_ticks = 0;
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printf("Release");
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gpio_clear(BUTTON_PORT, OPEN_BUTTON | CLOSE_BUTTON);
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}
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void buttons_tick(void) {
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if (open_ticks) {
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open_ticks--;
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if (!open_ticks) {
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gpio_clear(BUTTON_PORT, OPEN_BUTTON);
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printf("Release open");
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}
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}
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if (close_ticks) {
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close_ticks--;
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if (!close_ticks) {
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printf("Release close");
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gpio_clear(BUTTON_PORT, CLOSE_BUTTON);
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}
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}
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}
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