#include <atmel_start.h>

#include <cstdio>

#include "radio_hw_instance.hpp"

static volatile bool can_send_uart = true;

static void tx_cb_USART_0(const struct usart_async_descriptor* const io_descr)
{
  can_send_uart = true;
}

int main(void)
{
	/* Initializes MCU, drivers and middleware */
	atmel_start_init();

  gpio_set_pin_level(OUT_LED_TX, false);

  struct io_descriptor* usart_io = NULL;

  usart_async_register_callback(&USART_0, USART_ASYNC_TXC_CB, tx_cb_USART_0);
  usart_async_get_io_descriptor(&USART_0, &usart_io);
  usart_async_enable(&USART_0);

  radio::HwInstance* radio_hw = radio::HwInstance::create_instance();

	/* Replace with your application code */
	while (1)
  {
    gpio_toggle_pin_level(OUT_LED_RX);

    uint8_t uart_data[12] = { 0 };

    if (can_send_uart)
    {
      can_send_uart = false;
      const int16_t radio_num = radio_hw->register_read(0x1C);

      std::sprintf((char*)uart_data, "%d\n\r", radio_num);
      io_write(usart_io, uart_data, 12);
      gpio_toggle_pin_level(OUT_LED_TX);
    }

    delay_ms(1000);
	}
}