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


volatile BaseType_t f_led = 0;
volatile int contador = 0;
volatile int64_t last_time = 0;

void IRAM_ATTR button_isr();
void mostrar_num(int num);
void config_portas();

// [G,F,A,B,C,D,E]
int mtx[10][7] = {
  {1,0,0,0,0,0,0}, // 0
  {1,1,1,0,0,1,1}, // 1
  {0,1,0,0,1,0,0}, // 2
  {0,1,0,0,0,0,1}, // 3
  {0,0,1,0,0,1,1}, // 4
  {0,0,0,1,0,0,1}, // 5
  {0,0,0,1,0,0,0}, // 6
  {1,1,0,0,0,1,1}, // 7
  {0,0,0,0,0,0,0}, // 8
  {0,0,0,0,0,0,1}, // 9
};

int pin[7] = {4, 5, 6, 7, 8, 9, 10};

void app_main() {
  gpio_set_direction(GPIO_NUM_0, GPIO_MODE_INPUT);
  gpio_set_pull_mode(GPIO_NUM_0, GPIO_PULLUP_DISABLE);
  gpio_set_intr_type(GPIO_NUM_0, GPIO_INTR_POSEDGE);
  
  gpio_install_isr_service(0);
  gpio_isr_handler_add(GPIO_NUM_0, button_isr, NULL);

  config_portas();
  mostrar_num(contador);

  while(true){
    if(f_led){
      f_led=0;
      int agora = esp_timer_get_time();

      if(agora - last_time > 200000){
        last_time = agora;
        contador++;
        if(contador > 9) contador = 0;
        mostrar_num(contador);
      }
    }
    vTaskDelay(1000/portTICK_PERIOD_MS);
  }
}

void config_portas(){
  for (int i = 0; i < 7; i++){
    gpio_reset_pin(pin[i]);
    gpio_set_direction(pin[i], GPIO_MODE_OUTPUT);
  }
}

void mostrar_num(int num){
  // mapeamento de pinos
  for (int i = 0; i < 7; i++){
    gpio_set_level(pin[i], mtx[num][i]);
  }
}

void IRAM_ATTR button_isr()
{
  f_led=1;
}