#include <stdio.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "driver/uart.h"
#include <string.h>
//dfd
void uartPutchar(char c)
{
    uart_write_bytes(0, &c, sizeof(c));
}

void uartputs(char *str)
{
  
  uart_write_bytes(0, (const char*)str, strlen(str));
}

void uartputchar(char c)
{
  
  uart_write_bytes(0, &c, sizeof(c));
}

int  uartkbhit(void)
{

  int length = 0;
  uart_get_buffered_data_len(0, (size_t*)&length);
  

  return (length > 0);

}

char uartgetchar(void)
{
  char c;
  while(uartkbhit() == 0)
  {
    vTaskDelay(10 / portTICK_PERIOD_MS);

  }
  uart_read_bytes(0, &c, sizeof(0), 0);

  return c;
}



void app_main() {

  char *cadena = "Wasaaaaaaaaaaaaaaaaaaa\n";
  char c = 'c';
  
  const uart_port_t uart_num = UART_NUM_0;
  uart_config_t uart_config = {
      .baud_rate = 115200,
      .data_bits = UART_DATA_8_BITS,
      .parity = UART_PARITY_DISABLE,
      .stop_bits = UART_STOP_BITS_1,
      .flow_ctrl = UART_HW_FLOWCTRL_CTS_RTS,
      .rx_flow_ctrl_thresh = 122,
  };
  // Configure UART parameters
  ESP_ERROR_CHECK(uart_param_config(uart_num, &uart_config));

  // Set UART pins(TX: IO4, RX: IO5, RTS: IO18, CTS: IO19)
  ESP_ERROR_CHECK(uart_set_pin(0, 1, 3, UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE));
  // Setup UART buffered IO with event queue
const int uart_buffer_size = (1024 * 2);
QueueHandle_t uart_queue;
// Install UART driver using an event queue here
ESP_ERROR_CHECK(uart_driver_install(UART_NUM_0, uart_buffer_size, uart_buffer_size, 10, &uart_queue, 0));
  while (true) {

  
    char tecla;
    tecla  = uartgetchar();
    uartputchar(tecla);
    uartputchar('\n');
    uartputs("ciclo\n");
    uartputs(cadena);
    vTaskDelay(10 / portTICK_PERIOD_MS);
    

   

  }
}