text: /**
   * Copyright (c) 2014-2020, Nordic Semiconductor ASA
   *
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without modification,
   * are permitted provided that the following conditions are met:
   *
   * 1. Redistributions of source code must retain the above copyright notice, this
   *    list of conditions and the following disclaimer.
   *
   * 2. Redistributions in binary form, except as embedded into a Nordic
   *    Semiconductor ASA integrated circuit in a product or a software update for
   *    such product, must reproduce the above copyright notice, this list of
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   *    materials provided with the distribution.
   *
   * 3. Neither the name of Nordic Semiconductor ASA nor the names of its
   *    contributors may be used to endorse or promote products derived from this
   *    software without specific prior written permission.
   *
   * 4. This software, with or without modification, must only be used with a
   *    Nordic Semiconductor ASA integrated circuit.
   *
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   *    engineered, decompiled, modified and/or disassembled.
   *
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  /** @file
   *
   * @defgroup nrf_radio_test_example_main main.c
   * @{
   * @ingroup nrf_radio_test_example
   * @brief Radio Test Example application main file.
   *
   * This file contains the source code for a sample application that uses the NRF_RADIO and is controlled through the serial port.
   *
   */
  
  
  #include <stdint.h>
  #include <stdbool.h>
  #include <stdio.h>
  #include "bsp.h"
  #include "nrf.h"
  #include "radio_cmd.h"
  #include "app_uart.h"
  #include "app_error.h"
  #include "nordic_common.h"
  #include "nrf_drv_clock.h"
  #include "nrf_cli.h"
  #include "nrf_cli_uart.h"
  
  #include "nrf_log.h"
  #include "nrf_log_ctrl.h"
  #include "nrf_log_default_backends.h"
  #if defined(NRF21540_DRIVER_ENABLE) && (NRF21540_DRIVER_ENABLE == 1)
  #include "nrf21540.h"
  #endif
  
  NRF_CLI_UART_DEF(m_cli_uart_transport, 0, 64, 16);
  NRF_CLI_DEF(m_cli_uart,
              "uart_cli:~$ ",
              &m_cli_uart_transport.transport,
              '\r',
              CLI_EXAMPLE_LOG_QUEUE_SIZE);
  
  
  /**@brief Function for starting a command line interface that works on the UART transport layer.
   */
  static void cli_start(void)
  {
      ret_code_t ret;
  
      ret = nrf_cli_start(&m_cli_uart);
      APP_ERROR_CHECK(ret);
  }
  
  
  /**@brief Function for configuring UART for CLI.
   */
  static void cli_init(void)
  {
      ret_code_t ret;
  
      nrf_drv_uart_config_t uart_config = NRF_DRV_UART_DEFAULT_CONFIG;
  
      uart_config.pseltxd = TX_PIN_NUMBER;
      uart_config.pselrxd = RX_PIN_NUMBER;
      uart_config.hwfc    = NRF_UART_HWFC_DISABLED;
      ret                 = nrf_cli_init(&m_cli_uart, &uart_config, true, true, NRF_LOG_SEVERITY_INFO);
      APP_ERROR_CHECK(ret);
  }
  
  
  /**@brief Function for initializing logging.
   */
  static void log_init(void)
  {
      ret_code_t err_code = NRF_LOG_INIT(app_timer_cnt_get);
  
      APP_ERROR_CHECK(err_code);
  }
  
  
  /** @brief Function for configuring all peripherals used in this example.
   */
  static void clock_init(void)
  {
      // Start 64 MHz crystal oscillator.
      NRF_CLOCK->EVENTS_HFCLKSTARTED = 0;
      NRF_CLOCK->TASKS_HFCLKSTART    = 1;
  
      // Wait for the external oscillator to start up.
      while (NRF_CLOCK->EVENTS_HFCLKSTARTED == 0)
      {
          // Do nothing.
      }
  }
  
  
  /** @brief Function for the main application entry.
   */
  int main(void)
  {
      uint32_t err_code;
  
      log_init();
  
      err_code = nrf_drv_clock_init();
      APP_ERROR_CHECK(err_code);
      nrf_drv_clock_lfclk_request(NULL);
  
      err_code = app_timer_init();
      APP_ERROR_CHECK(err_code);
  
      clock_init();
      radio_cmd_init();
  
      cli_init();
      cli_start();
  
  #if defined(NRF21540_DRIVER_ENABLE) && (NRF21540_DRIVER_ENABLE == 1)
      //Initialization of nRF21540 front-end Bluetooth® range extender chip. Do not use if your hardware doesn't support it.
      err_code = nrf21540_init();
      APP_ERROR_CHECK(err_code);
  #endif
  
      NRF_LOG_RAW_INFO("Radio test example started.\r\n");
  
      while (true)
      {
  #if defined(NRF21540_DRIVER_ENABLE) && (NRF21540_DRIVER_ENABLE == 1)
          if (nrf21540_is_error())
          {
            //do something in case of nRF21540 error
            while(1);
          }
  #endif
          UNUSED_RETURN_VALUE(NRF_LOG_PROCESS());
          nrf_cli_process(&m_cli_uart);
      }
  }
  
  
  /** @} */
  