95 lines
2.0 KiB
C
95 lines
2.0 KiB
C
/**
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* @file localbtn.c
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* @brief Local GPIO0 BTN reading implementation using edge capture
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*/
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#include "localbtn.h"
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#include "driver/gpio.h"
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#include "esp_timer.h"
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#include "esp_log.h"
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "soc/gpio_num.h"
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#include <string.h>
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static const char *TAG = "LOCALBTN";
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uint8_t current_mode;
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bool initialized;
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TaskHandle_t localbtnTaskhandle;
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localbtn_mode_change_callback_t callback;
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#define BOOT_BTN GPIO_NUM_0 // TODO: move to config
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bool boot_button_pressed(void)
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{
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return gpio_get_level(BOOT_BTN) == 0; // active LOW
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}
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static void localbtn_task(void *arg)
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{
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bool lastState = false;
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while (1)
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{
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vTaskDelay(pdMS_TO_TICKS(10));
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bool currentState = boot_button_pressed();
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if ((currentState) && (lastState != currentState))
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{
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printf("BOOT button pressed\n");
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if (callback)
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{
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callback(current_mode);
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}
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}
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lastState = currentState;
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}
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}
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esp_err_t localbtn_init()
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{
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gpio_config_t io_conf = {
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.pin_bit_mask = 1ULL << BOOT_BTN,
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.mode = GPIO_MODE_INPUT,
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.pull_up_en = GPIO_PULLUP_ENABLE, // safe even if external pull-up exists
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.pull_down_en = GPIO_PULLDOWN_DISABLE,
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.intr_type = GPIO_INTR_DISABLE};
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ESP_ERROR_CHECK(gpio_config(&io_conf));
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// Create monitor task
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BaseType_t ret = xTaskCreate(localbtn_task, "localbtn_monitor", 2048, NULL, 5, &localbtnTaskhandle);
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if (ret != pdPASS)
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{
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return ESP_FAIL;
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}
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initialized = true;
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ESP_LOGI(TAG, "local btn initialized on GPIO%d", BOOT_BTN);
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return ESP_OK;
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}
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void localbtn_deinit(void)
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{
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if (!initialized)
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{
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return;
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}
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if (localbtnTaskhandle)
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{
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vTaskDelete(localbtnTaskhandle);
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localbtnTaskhandle = NULL;
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}
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initialized = false;
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}
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void localbtn_register_callback(localbtn_mode_change_callback_t cb)
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{
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callback = cb;
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}
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