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

#define RED_PIN     25
#define GREEN_PIN   26
#define BLUE_PIN    27

#define LEDC_TIMER_BIT_NUM  LEDC_TIMER_10_BIT
#define LEDC_TIMER_FREQ_HZ  5000

void rgb_led_init() {
    ledc_timer_config_t ledc_timer = {
        .duty_resolution = LEDC_TIMER_BIT_NUM,
        .freq_hz = LEDC_TIMER_FREQ_HZ,
        .speed_mode = LEDC_HIGH_SPEED_MODE,
        .timer_num = LEDC_TIMER_0
    };
    ledc_timer_config(&ledc_timer);

    ledc_channel_config_t ledc_channel[3] = {
        {
            .gpio_num = RED_PIN,
            .speed_mode = LEDC_HIGH_SPEED_MODE,
            .channel = LEDC_CHANNEL_0,
            .intr_type = LEDC_INTR_DISABLE,
            .timer_sel = LEDC_TIMER_0,
            .duty = 0
        },
        {
            .gpio_num = GREEN_PIN,
            .speed_mode = LEDC_HIGH_SPEED_MODE,
            .channel = LEDC_CHANNEL_1,
            .intr_type = LEDC_INTR_DISABLE,
            .timer_sel = LEDC_TIMER_0,
            .duty = 0
        },
        {
            .gpio_num = BLUE_PIN,
            .speed_mode = LEDC_HIGH_SPEED_MODE,
            .channel = LEDC_CHANNEL_2,
            .intr_type = LEDC_INTR_DISABLE,
            .timer_sel = LEDC_TIMER_0,
            .duty = 0
        }
    };

    for (int i = 0; i < 3; i++) {
        ledc_channel_config(&ledc_channel[i]);
    }
}

void app_main() {
    rgb_led_init();

    while (1) {
        // Set RGB values (0-255 for each color)
        ledc_set_duty(LEDC_HIGH_SPEED_MODE, LEDC_CHANNEL_0, 255); // Red
        ledc_update_duty(LEDC_HIGH_SPEED_MODE, LEDC_CHANNEL_0);
        
        ledc_set_duty(LEDC_HIGH_SPEED_MODE, LEDC_CHANNEL_1, 0);   // Green
        ledc_update_duty(LEDC_HIGH_SPEED_MODE, LEDC_CHANNEL_1);
        
        ledc_set_duty(LEDC_HIGH_SPEED_MODE, LEDC_CHANNEL_2, 0);   // Blue
        ledc_update_duty(LEDC_HIGH_SPEED_MODE, LEDC_CHANNEL_2);
        
        vTaskDelay(1000 / portTICK_PERIOD_MS);
        
        ledc_set_duty(LEDC_HIGH_SPEED_MODE, LEDC_CHANNEL_0, 0);
        ledc_update_duty(LEDC_HIGH_SPEED_MODE, LEDC_CHANNEL_0);
        
        ledc_set_duty(LEDC_HIGH_SPEED_MODE, LEDC_CHANNEL_1, 255);
        ledc_update_duty(LEDC_HIGH_SPEED_MODE, LEDC_CHANNEL_1);
        
        ledc_set_duty(LEDC_HIGH_SPEED_MODE, LEDC_CHANNEL_2, 0);
        ledc_update_duty(LEDC_HIGH_SPEED_MODE, LEDC_CHANNEL_2);
        
        vTaskDelay(1000 / portTICK_PERIOD_MS);
        
        ledc_set_duty(LEDC_HIGH_SPEED_MODE, LEDC_CHANNEL_0, 0);
        ledc_update_duty(LEDC_HIGH_SPEED_MODE, LEDC_CHANNEL_0);
        
        ledc_set_duty(LEDC_HIGH_SPEED_MODE, LEDC_CHANNEL_1, 0);
        ledc_update_duty(LEDC_HIGH_SPEED_MODE, LEDC_CHANNEL_1);
        
        ledc_set_duty(LEDC_HIGH_SPEED_MODE, LEDC_CHANNEL_2, 255);
        ledc_update_duty(LEDC_HIGH_SPEED_MODE, LEDC_CHANNEL_2);
        
        vTaskDelay(1000 / portTICK_PERIOD_MS);
    }
}