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

// Define which GPIO pin to use (most ESP32 boards have LED on GPIO2)
#define LED_PIN GPIO_NUM_13

// Tag for logging
static const char* TAG = "BLINK";

void app_main(void)
{
    ESP_LOGI(TAG, "Starting blink example!");
    
    // Configure the GPIO pin as output
    gpio_config_t io_conf = {
        .pin_bit_mask = (1ULL << LED_PIN),  // Bit mask for the pin
        .mode = GPIO_MODE_OUTPUT,           // Set as output mode
        .pull_up_en = GPIO_PULLUP_DISABLE,  // Disable pull-up
        .pull_down_en = GPIO_PULLDOWN_DISABLE, // Disable pull-down
        .intr_type = GPIO_INTR_DISABLE      // Disable interrupt
    };
    
    // Apply the configuration
    gpio_config(&io_conf);
    
    ESP_LOGI(TAG, "GPIO configured! Starting blink loop...");
    
    // Main loop
    while(1) {
        // Turn LED on
        gpio_set_level(LED_PIN, 1);
        ESP_LOGI(TAG, "LED ON");
        
        // Wait 1 second
        vTaskDelay(pdMS_TO_TICKS(1000));
        
        // Turn LED off
        gpio_set_level(LED_PIN, 0);
        ESP_LOGI(TAG, "LED OFF");
        
        // Wait 1 second
        vTaskDelay(pdMS_TO_TICKS(1000));
    }
}