/* Interrupt Example
 
   This example code is in the Public Domain (or CC0 licensed, at your option.)
 
   Unless required by applicable law or agreed to in writing, this
   software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
   CONDITIONS OF ANY KIND, either express or implied.
*/
#include <stdio.h>
#include "driver/gpio.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "freertos/semphr.h"

#define LED GPIO_NUM_19

#define POUSSOIR GPIO_NUM_13

SemaphoreHandle_t xSemaSync;

static void gpio_isr_handler(void* arg) 
{
    xSemaphoreGiveFromISR(xSemaSync,NULL);
}

void vTask_Int( void *pvParameters )
{ int16_t Nb_IT=0;
  for( ;; )
  {
    xSemaphoreTake(xSemaSync, portMAX_DELAY);
    gpio_set_level(LED, 1);
    printf("Interruption n° %d\n", ++Nb_IT);
  }
}

extern "C" void app_main()
{   

    printf("init\n");

    // Init Poussoir
    gpio_reset_pin(POUSSOIR);
    gpio_set_direction(POUSSOIR, GPIO_MODE_INPUT);
    gpio_pullup_en(POUSSOIR);

    gpio_reset_pin(LED);
    gpio_set_direction(LED, GPIO_MODE_OUTPUT);
    
    //Init ISR 
    gpio_install_isr_service(0);
    gpio_set_intr_type(POUSSOIR, GPIO_INTR_NEGEDGE);
    gpio_isr_handler_add(POUSSOIR, gpio_isr_handler, NULL);

    printf("config complete\n");
    xSemaSync = xSemaphoreCreateBinary();
    xTaskCreatePinnedToCore(vTask_Int, "vTaskInt", 10000, NULL, 2, NULL,0);


    for(;;) {

        gpio_set_level(LED, 0);
        vTaskDelay(1000 / portTICK_PERIOD_MS);
    }
}