/**
  ******************************************************************************
  * @file    main.c
  * @author  MCU Application Team
  * @brief   Main program body
  * @date
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2023 Puya Semiconductor Co.
  * All rights reserved.</center></h2>
  *
  * This software component is licensed by Puya under BSD 3-Clause license,
  * the "License"; You may not use this file except in compliance with the
  * License. You may obtain a copy of the License at:
  *                        opensource.org/licenses/BSD-3-Clause
  *
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2016 STMicroelectronics.
  * All rights reserved.</center></h2>
  *
  * This software component is licensed by ST under BSD 3-Clause license,
  * the "License"; You may not use this file except in compliance with the
  * License. You may obtain a copy of the License at:
  *                        opensource.org/licenses/BSD-3-Clause
  *
  ******************************************************************************
  */

/* Includes ------------------------------------------------------------------*/
#include "main.h"

/* Private define ------------------------------------------------------------*/
#define COUNTOF(__BUFFER__)   (sizeof(__BUFFER__) / sizeof(*(__BUFFER__)))
#define TXSTARTMESSAGESIZE    (COUNTOF(aTxStartMessage) - 1)
#define TXENDMESSAGESIZE      (COUNTOF(aTxEndMessage) - 1)

/* Private variables ---------------------------------------------------------*/
UART_HandleTypeDef UartHandle;
uint8_t aTxStartMessage[] = "\r\n UART Hyperterminal communication based on DMA\r\n Enter 12 characters using keyboard :\r\n";
uint8_t aTxEndMessage[] = "\r\n Example Finished\r\n";
uint8_t aRxBuffer[12] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff};

/* Private user code ---------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/

/**
  * @brief  Main program
  * @retval int
  */
int main(void)
{
  /* Reset of all peripherals, Initializes the Systick */
  HAL_Init();
  
  /* Configure LED */
  BSP_LED_Init(LED_GREEN);
  
  /* Initialize USART2 */
  UartHandle.Instance          = USART2;
  UartHandle.Init.BaudRate     = 115200;
  UartHandle.Init.WordLength   = UART_WORDLENGTH_8B;
  UartHandle.Init.StopBits     = UART_STOPBITS_1;
  UartHandle.Init.Parity       = UART_PARITY_NONE;
  UartHandle.Init.HwFlowCtl    = UART_HWCONTROL_NONE;
  UartHandle.Init.Mode         = UART_MODE_TX_RX;
  UartHandle.Init.OverSampling = UART_OVERSAMPLING_16;
  UartHandle.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
  HAL_UART_Init(&UartHandle);

  /* Start the transmission process */
  if(HAL_UART_Transmit_DMA(&UartHandle, (uint8_t*)aTxStartMessage, TXSTARTMESSAGESIZE)!= HAL_OK)
  {
    /* Transfer error in transmission process */
    APP_ErrorHandler();
  }

  /* Put UART peripheral in reception process */
  if (HAL_UART_Receive_DMA(&UartHandle, (uint8_t *)aRxBuffer, 12) != HAL_OK)
  {
    /* Transfer error in reception process */
    APP_ErrorHandler();
  }

  /* Wait for the end of the transfer */
  while (HAL_UART_GetState(&UartHandle) != HAL_UART_STATE_READY)
  {
  }

  /* Send the received Buffer */
  if (HAL_UART_Transmit_DMA(&UartHandle, (uint8_t *)aRxBuffer, 12) != HAL_OK)
  {
    /* Transfer error in transmission process */
    APP_ErrorHandler();
  }

  /* Wait for the end of the transfer */
  while (HAL_UART_GetState(&UartHandle) != HAL_UART_STATE_READY)
  {
  }

  /* Send the End Message */
  if(HAL_UART_Transmit_DMA(&UartHandle, (uint8_t*)aTxEndMessage, TXENDMESSAGESIZE)!= HAL_OK)
  {
    /* Transfer error in transmission process */
    APP_ErrorHandler();
  }

  /* Wait for the end of the transfer */
  while (HAL_UART_GetState(&UartHandle) != HAL_UART_STATE_READY)
  {
  }

  /* Turn on LED if test passes then enter infinite loop */
  BSP_LED_On(LED_GREEN);
  
  /* Infinite loop */
  while (1)
  {

  }
}

/**
  * @brief  Error handling function
  * @param  None
  * @retval None
  */
void APP_ErrorHandler(void)
{
  /* Infinite loop */
  while (1)
  {
  }
}

#ifdef  USE_FULL_ASSERT
/**
  * @brief  Reports the name of the source file and the source line number
  *         where the assert_param error has occurred.
  * @param  file：Pointer to the source file name
  * @param  line：assert_param error line source number
  * @retval None
  */
void assert_failed(uint8_t *file, uint32_t line)
{
  /* User can add His own implementation to report the file name and line number,
     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
  /* Infinite loop */
  while (1)
  {
  }
}
#endif /* USE_FULL_ASSERT */

/************************ (C) COPYRIGHT Puya *****END OF FILE******************/
