#include <stdio.h>
#include <driver/gpio.h>
#include <driver/adc.h>
#include <esp_log.h>
#include <math.h>
#include "driver/ledc.h"
#include "esp_adc_cal.h"
#include <stdint.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "esp_timer.h"

#define CP_PWM_PIN 18 
#define READ_PWD_SIGNAL ADC1_CHANNEL_5 // Pin 33

void set_cp_pwm_duty(uint32_t duty) {
    ledc_set_duty(LEDC_HIGH_SPEED_MODE, LEDC_CHANNEL_0, duty);
    ledc_update_duty(LEDC_HIGH_SPEED_MODE, LEDC_CHANNEL_0);
}

void pwd() {

    // int current = 22;  // Example current value 
    // int duty_cycle = current / 0.6;  //  duty cycle
    // // 1024 = 10-bit resolution
    // // 1024 * (duty_cycle / 100) gives the duty cycle in bits
    // int duty_cycle_res = 1024 * (duty_cycle / 100.0); 
    int x = 0 ;
    while (x<4095){
set_cp_pwm_duty(x);
 vTaskDelay(pdMS_TO_TICKS(50));
x=x+100;
    }
    
   
    printf("duty_cycle_res: %d\n", x);


}

void configure_adc() {
    adc1_config_width(ADC_WIDTH_BIT_11); 
    adc1_config_channel_atten(READ_PWD_SIGNAL, ADC_ATTEN_DB_11);
    
    ledc_timer_config_t ledc_timer = {
        .speed_mode       = LEDC_HIGH_SPEED_MODE,
        .timer_num        = LEDC_TIMER_0,
        .duty_resolution  = LEDC_TIMER_12_BIT,
        .freq_hz          = 500,
        .clk_cfg          = LEDC_AUTO_CLK
    };
    ledc_timer_config(&ledc_timer); 

    ledc_channel_config_t ledc_channel = {
        .speed_mode     = LEDC_HIGH_SPEED_MODE,
        .channel        = LEDC_CHANNEL_0,
        .timer_sel      = LEDC_TIMER_0,
        .intr_type      = LEDC_INTR_DISABLE,
        .gpio_num       = CP_PWM_PIN,
        .duty           = 0,
        .hpoint         = 0
    };
    ledc_channel_config(&ledc_channel);
}

void app_main(void) {
    configure_adc();
    pwd();

    
}