// /*
#include <stdio.h>
#include <stdbool.h>
#include <esp_timer.h>
#include <freertos/FreeRTOS.h>
#include <freertos/task.h>
#include <esp_err.h>
#include <esp_log.h>
#include <driver/gpio.h>

bool state = true;

void app_main()
{
    gpio_set_direction(GPIO_NUM_2,GPIO_MODE_INPUT_OUTPUT);
    // gpio_set_level(GPIO_NUM_2, false);
    gpio_set_level(GPIO_NUM_2, state);

    while(true)
    {
      // ESP_LOGI("timer-isr","GPIO STATE = %d",(gpio_get_level(GPIO_NUM_2)));
      printf("GPIO STATE = %d\n",(gpio_get_level(GPIO_NUM_2)));
      vTaskDelay(pdMS_TO_TICKS(1000));

    }
}

void timer_1_isr(void* args)
{
  state = !state;
    gpio_set_level(GPIO_NUM_2, state);
}

void timer_init()
{
  // Setup and start timer with calculated interval
    esp_timer_create_args_t timer_1_args = {
		// Timer ISR
        .callback = &timer_1_isr,
        .name = "square_wave_timer_1"
    };
	// Temporary Timer Handler 1
	esp_timer_handle_t timer_1;
	// Create a timer associated with this handler
	ESP_ERROR_CHECK(esp_timer_create(&timer_1_args, &timer_1));

  // Start the periodic timer start 0f 1s
	ESP_ERROR_CHECK(esp_timer_start_periodic(timer_1, 1000000));
}
// */

// #include <stdio.h>
// #include "esp_timer.h"
// #include "freertos/FreeRTOS.h"
// #include "freertos/task.h"
// #include "esp_log.h"
// #include "driver/gpio.h"

// void timer_callback(void *param)
// {
//   static bool ON;
//   ON = !ON;
  
//   gpio_set_level(GPIO_NUM_2, ON);
// }

// void app_main(void)
// {
//   gpio_pad_select_gpio(GPIO_NUM_2);
//   gpio_set_direction(GPIO_NUM_2, GPIO_MODE_OUTPUT);

//   const esp_timer_create_args_t my_timer_args = {
//       .callback = &timer_callback,
//       .name = "My Timer"};
//   esp_timer_handle_t timer_handler;
//   ESP_ERROR_CHECK(esp_timer_create(&my_timer_args, &timer_handler));
//   ESP_ERROR_CHECK(esp_timer_start_periodic(timer_handler, 50));

//   while (true)
//   {
//     esp_timer_dump(stdout);
//     vTaskDelay(pdMS_TO_TICKS(1000));
//   }
// }




// void timer_0.0_init()
// {
// 	// Select and initialize basic parameters of the timer
// 	timer_config_t config = {
// 		.divider = 16,
// 		.counter_dir = TIMER_COUNT_UP,
// 		.counter_en = TIMER_PAUSE,
// 		.alarm_en = TIMER_ALARM_EN,
// 		.auto_reload = true,
// 	}; // default clock source is APB (Advanced Peripheral Bus)
// 	timer_init(TIMER_GROUP_0, TIMER_0, &config);

// 	/* Timer's counter will initially start from value below.
// 	   Also, if auto_reload is set, this value will be automatically reload on alarm */
// 	timer_set_counter_value(TIMER_GROUP_0, TIMER_0, 0);

// 	/* Configure the alarm value and the interrupt on alarm. */
// 	// timer_set_alarm_value(TIMER_GROUP_0, TIMER_0, 0.0001 * TIMER_SCALE); // 100 us timer

// 	// timer_set_alarm_value(TIMER_GROUP_0, TIMER_0, TIMER_SCALE * 0.0001); // 100 us 
// 	timer_set_alarm_value(TIMER_GROUP_0, TIMER_0, TIMER_SCALE * 0.00002); // 20 us timer
// 	timer_enable_intr(TIMER_GROUP_0, TIMER_0);

// 	timer_info_t *timer_info = calloc(1, sizeof(timer_info_t));
// 	timer_info->timer_group = TIMER_GROUP_0;
// 	timer_info->timer_idx = TIMER_0;
// 	timer_info->auto_reload = true;
// 	timer_info->alarm_interval = 1;
// 	timer_isr_callback_add(TIMER_GROUP_0, TIMER_0, timer_group_isr_callback, timer_info, 0);

// 	timer_start(TIMER_GROUP_0, TIMER_0);
// }