/**
  ******************************************************************************
  * @file    Examples_LL/SPI/SPI_OneBoard_HalfDuplex_DMA_Init/Src/main.c
  * @author  MCD Application Team
  * @version V1.0.0
  * @date    14-April-2017
  * @brief   This example describes how to send/receive bytes over SPI IP using
  *          the STM32F1xx SPI LL API.
  *          Peripheral initialization done using LL initialization function.
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
  *
  * 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 must reproduce the above copyright notice,
  *      this list of conditions and the following disclaimer in the documentation
  *      and/or other materials provided with the distribution.
  *   3. Neither the name of STMicroelectronics nor the names of its contributors
  *      may be used to endorse or promote products derived from this software
  *      without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  ******************************************************************************
  */

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

/** @addtogroup STM32F1xx_LL_Examples
  * @{
  */

/** @addtogroup SPI_OneBoard_HalfDuplex_DMA_Init
  * @{
  */

/* Private typedef -----------------------------------------------------------*/
LL_SPI_InitTypeDef spi_initstruct;

/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
__IO uint8_t ubButtonPress = 0;

/* Buffer used for transmission */
uint8_t aTxBuffer[] = "**** SPI_OneBoard_HalfDuplex_DMA_Init communication **** SPI_OneBoard_HalfDuplex_DMA_Init communication **** SPI_OneBoard_HalfDuplex_DMA_Init communication ****";
uint8_t ubNbDataToTransmit = sizeof(aTxBuffer);
__IO uint8_t ubTransmissionComplete = 0;

/* Buffer used for reception */
uint8_t aRxBuffer[sizeof(aTxBuffer)];
uint8_t ubNbDataToReceive = sizeof(aTxBuffer);
__IO uint8_t ubReceptionComplete = 0;

/* Private function prototypes -----------------------------------------------*/
void     SystemClock_Config(void);
void     Configure_DMA(void);
void     Configure_SPI1(void);
void     Configure_SPI2(void);
void     Activate_SPI1(void);
void     Activate_SPI2(void);
void     LED_Init(void);
void     LED_On(void);
void     LED_Blinking(uint32_t Period);
void     LED_Off(void);
void     UserButton_Init(void);
void     WaitForUserButtonPress(void);
void     WaitAndCheckEndOfTransfer(void);
uint8_t  Buffercmp8(uint8_t* pBuffer1, uint8_t* pBuffer2, uint8_t BufferLength);
/* Private functions ---------------------------------------------------------*/

/**
  * @brief  Main program
  * @param  None
  * @retval None
  */
int main(void)
{
  /* Configure the system clock to 72 MHz */
  SystemClock_Config();

  /* Initialize LED2 */
  LED_Init();

  /* Configure the SPI1 parameters */
  Configure_SPI1();

  /* Configure the SPI2 parameters */
  Configure_SPI2();

  /* Configure DMA channels for the SPI1  */
  Configure_DMA();

  /* Initialize User push-button in EXTI mode */
  UserButton_Init();

  /* Enable the SPI2 peripheral */
  Activate_SPI2();

  /* Wait for User push-button press to start transfer */
  WaitForUserButtonPress();

  /* Enable the SPI1 peripheral */
  Activate_SPI1();

  /* Wait for the end of the transfer and check received data */
  /* LED blinking FAST during waiting time */
  WaitAndCheckEndOfTransfer();

  /* Infinite loop */
  while (1)
  {
  }
}

/**
  * @brief  This function configures the DMA Channels for SPI1 and SPI2
  * @note  This function is used to :
  *        -1- Enable DMA1 and DMA1 clock
  *        -2- Configure NVIC for DMA1 and DMA1 transfer complete/error interrupts
  *        -3- Configure the DMA1_Channel3 functional parameters
  *        -4- Configure the DMA1_Channel4 functional parameters
  *        -5- Enable DMA1 and DMA1 interrupts complete/error
  * @param   None
  * @retval  None
  */
void Configure_DMA(void)
{
  /* DMA1 used for SPI1 Transmission
   * DMA1 used for SPI2 Reception
   */
  /* (1) Enable the clock of DMA1 and DMA1 */
  LL_AHB1_GRP1_EnableClock(LL_AHB1_GRP1_PERIPH_DMA1);
  LL_AHB1_GRP1_EnableClock(LL_AHB1_GRP1_PERIPH_DMA1);

 /* (2) Configure NVIC for DMA transfer complete/error interrupts */
  NVIC_SetPriority(DMA1_Channel3_IRQn, 0);
  NVIC_EnableIRQ(DMA1_Channel3_IRQn);
  NVIC_SetPriority(DMA1_Channel4_IRQn, 0);
  NVIC_EnableIRQ(DMA1_Channel4_IRQn);

  /* (3) Configure the DMA1_Channel3 functional parameters */
  LL_DMA_ConfigTransfer(DMA1,
                        LL_DMA_CHANNEL_3,
                        LL_DMA_DIRECTION_MEMORY_TO_PERIPH | LL_DMA_PRIORITY_HIGH | LL_DMA_MODE_NORMAL |
                        LL_DMA_PERIPH_NOINCREMENT | LL_DMA_MEMORY_INCREMENT |
                        LL_DMA_PDATAALIGN_BYTE | LL_DMA_MDATAALIGN_BYTE);
  LL_DMA_ConfigAddresses(DMA1, 
                         LL_DMA_CHANNEL_3,
                         (uint32_t)aTxBuffer, LL_SPI_DMA_GetRegAddr(SPI1),
                         LL_DMA_GetDataTransferDirection(DMA1, LL_DMA_CHANNEL_3));

  LL_DMA_SetDataLength(DMA1, LL_DMA_CHANNEL_3, ubNbDataToTransmit);

  /* (4) Configure the DMA1_Channel4 functional parameters */
  LL_DMA_ConfigTransfer(DMA1,
                        LL_DMA_CHANNEL_4,
                        LL_DMA_DIRECTION_PERIPH_TO_MEMORY | LL_DMA_PRIORITY_HIGH | LL_DMA_MODE_NORMAL |
                        LL_DMA_PERIPH_NOINCREMENT | LL_DMA_MEMORY_INCREMENT |
                        LL_DMA_PDATAALIGN_BYTE | LL_DMA_MDATAALIGN_BYTE);
  LL_DMA_ConfigAddresses(DMA1, 
                         LL_DMA_CHANNEL_4,
                         LL_SPI_DMA_GetRegAddr(SPI2), (uint32_t)aRxBuffer,
                         LL_DMA_GetDataTransferDirection(DMA1, LL_DMA_CHANNEL_4));
  LL_DMA_SetDataLength(DMA1, LL_DMA_CHANNEL_4, ubNbDataToTransmit);


  /* (5) Enable DMA interrupts complete/error */
  LL_DMA_EnableIT_TC(DMA1, LL_DMA_CHANNEL_3);
  LL_DMA_EnableIT_TE(DMA1, LL_DMA_CHANNEL_3);
  LL_DMA_EnableIT_TC(DMA1, LL_DMA_CHANNEL_4);
  LL_DMA_EnableIT_TE(DMA1, LL_DMA_CHANNEL_4);
}

/**
  * @brief This function configures SPI1.
  * @note  This function is used to :
  *        -1- Enables GPIO clock and configures the SPI1 pins.
  *        -2- Configure SPI1 functional parameters.
  * @note   Peripheral configuration is minimal configuration from reset values.
  *         Thus, some useless LL unitary functions calls below are provided as
  *         commented examples - setting is default configuration from reset.
  * @param  None
  * @retval None
  */
void Configure_SPI1(void)
{
  /* (1) Enables GPIO clock and configures the SPI1 pins ********************/
  /* Enable the peripheral clock of GPIOB */
  LL_APB2_GRP1_EnableClock(LL_APB2_GRP1_PERIPH_GPIOB);
  /* Remap SPI1 pins and disable JTAG */
  LL_APB2_GRP1_EnableClock(LL_APB2_GRP1_PERIPH_AFIO);
  LL_GPIO_AF_Remap_SWJ_NOJTAG();
  while((AFIO->MAPR & AFIO_MAPR_SWJ_CFG_JTAGDISABLE) != AFIO_MAPR_SWJ_CFG_JTAGDISABLE);
  LL_GPIO_AF_EnableRemap_SPI1();

  /* Configure SCK Pin connected to pin 10 of CN7 connector */
  LL_GPIO_SetPinMode(GPIOB, LL_GPIO_PIN_3, LL_GPIO_MODE_ALTERNATE);
  LL_GPIO_SetPinSpeed(GPIOB, LL_GPIO_PIN_3, LL_GPIO_SPEED_FREQ_LOW);
  LL_GPIO_SetPinPull(GPIOB, LL_GPIO_PIN_3, LL_GPIO_PULL_DOWN);

  /* Configure MOSI Pin connected to pin 14 of CN7 connector */
  LL_GPIO_SetPinMode(GPIOB, LL_GPIO_PIN_5, LL_GPIO_MODE_ALTERNATE);
  LL_GPIO_SetPinSpeed(GPIOB, LL_GPIO_PIN_5, LL_GPIO_SPEED_FREQ_LOW);
  LL_GPIO_SetPinPull(GPIOB, LL_GPIO_PIN_5, LL_GPIO_PULL_DOWN);

  /* (2) Configure SPI1 functional parameters ********************************/
  /* Enable the peripheral clock of GPIOB */
  LL_APB2_GRP1_EnableClock(LL_APB2_GRP1_PERIPH_SPI1);

  /* Configure SPI1 communication */
  spi_initstruct.BaudRate          = LL_SPI_BAUDRATEPRESCALER_DIV32;
  spi_initstruct.TransferDirection = LL_SPI_HALF_DUPLEX_TX;
  spi_initstruct.ClockPhase        = LL_SPI_PHASE_2EDGE;
  spi_initstruct.ClockPolarity     = LL_SPI_POLARITY_HIGH;
  spi_initstruct.BitOrder          = LL_SPI_MSB_FIRST;
  spi_initstruct.DataWidth         = LL_SPI_DATAWIDTH_8BIT;
  spi_initstruct.NSS               = LL_SPI_NSS_SOFT;
  spi_initstruct.CRCCalculation    = LL_SPI_CRCCALCULATION_DISABLE;
  spi_initstruct.Mode              = LL_SPI_MODE_MASTER;

  /* Initialize SPI instance according to parameters defined in initialization structure. */  
  if (LL_SPI_Init(SPI1, &spi_initstruct) != SUCCESS)
  {
    /* Initialization Error */
    LED_Blinking(LED_BLINK_ERROR);
  }

  /* Configure SPI1 DMA transfer interrupts */
  /* Enable DMA TX Interrupt */
  LL_SPI_EnableDMAReq_TX(SPI1);
}

/**
  * @brief  This function configures SPI2.
  * @note  This function is used to :
  *        -1- Enables GPIO clock and configures the SPI2 pins.
  *        -2- Configure SPI2 functional parameters.
  * @note   Peripheral configuration is minimal configuration from reset values.
  *         Thus, some useless LL unitary functions calls below are provided as
  *         commented examples - setting is default configuration from reset.
  * @param  None
  * @retval None
  */
void Configure_SPI2(void)
{
  /* (1) Enables GPIO clock and configures the SPI2 pins ********************/

  /* Enable the peripheral clock of GPIOB */
  LL_APB2_GRP1_EnableClock(LL_APB2_GRP1_PERIPH_GPIOB);

  /* Configure SCK Pin connected to pin 15 of CN7 connector */
  LL_GPIO_SetPinMode(GPIOB, LL_GPIO_PIN_13, LL_GPIO_MODE_ALTERNATE);
  LL_GPIO_SetPinSpeed(GPIOB, LL_GPIO_PIN_13, LL_GPIO_SPEED_FREQ_LOW);
  LL_GPIO_SetPinPull(GPIOB, LL_GPIO_PIN_13, LL_GPIO_PULL_DOWN);

  /* Configure MISO Pin connected to pin 19 of CN7 connector */
  LL_GPIO_SetPinMode(GPIOB, LL_GPIO_PIN_14, LL_GPIO_MODE_ALTERNATE);
  LL_GPIO_SetPinSpeed(GPIOB, LL_GPIO_PIN_14, LL_GPIO_SPEED_FREQ_LOW);
  LL_GPIO_SetPinPull(GPIOB, LL_GPIO_PIN_14, LL_GPIO_PULL_DOWN);

  /* (2) Configure SPI2 functional parameters ********************************/
  /* Enable the peripheral clock of GPIOB */
  LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_SPI2);

  /* Configure SPI2 communication */
  spi_initstruct.BaudRate          = LL_SPI_BAUDRATEPRESCALER_DIV32;
  spi_initstruct.TransferDirection = LL_SPI_HALF_DUPLEX_RX;
  spi_initstruct.ClockPhase        = LL_SPI_PHASE_2EDGE;
  spi_initstruct.ClockPolarity     = LL_SPI_POLARITY_HIGH;
  spi_initstruct.BitOrder          = LL_SPI_MSB_FIRST;
  spi_initstruct.DataWidth         = LL_SPI_DATAWIDTH_8BIT;
  spi_initstruct.NSS               = LL_SPI_NSS_SOFT;
  spi_initstruct.CRCCalculation    = LL_SPI_CRCCALCULATION_DISABLE;
  spi_initstruct.Mode              = LL_SPI_MODE_SLAVE;

  /* Initialize SPI instance according to parameters defined in initialization structure. */  
  if (LL_SPI_Init(SPI2, &spi_initstruct) != SUCCESS)
  {
    /* Initialization Error */
    LED_Blinking(LED_BLINK_ERROR);
  }

  /* Configure SPI1 DMA transfer interrupts */
  /* Enable DMA RX Interrupt */
  LL_SPI_EnableDMAReq_RX(SPI2);
}

/**
  * @brief  This function Activate SPI1
  * @param  None
  * @retval None
  */
void Activate_SPI1(void)
{
  /* Enable SPI1 */
  LL_SPI_Enable(SPI1);
  /* Enable DMA Channels Tx */
  LL_DMA_EnableChannel(DMA1, LL_DMA_CHANNEL_3);
}

/**
  * @brief  This function Activate SPI2
  * @param  None
  * @retval None
  */
void Activate_SPI2(void)
{
  /* Enable SPI2 */
  LL_SPI_Enable(SPI2);
  /* Enable DMA Channels Rx */
  LL_DMA_EnableChannel(DMA1, LL_DMA_CHANNEL_4);
}

/**
  * @brief  Initialize LED2.
  * @param  None
  * @retval None
  */
void LED_Init(void)
{
  /* Enable the LED2 Clock */
  LED2_GPIO_CLK_ENABLE();

  /* Configure IO in output push-pull mode to drive external LED2 */
  LL_GPIO_SetPinMode(LED2_GPIO_PORT, LED2_PIN, LL_GPIO_MODE_OUTPUT);
  /* Reset value is LL_GPIO_OUTPUT_PUSHPULL */
  //LL_GPIO_SetPinOutputType(LED2_GPIO_PORT, LED2_PIN, LL_GPIO_OUTPUT_PUSHPULL);
  /* Reset value is LL_GPIO_SPEED_FREQ_LOW */
  //LL_GPIO_SetPinSpeed(LED2_GPIO_PORT, LED2_PIN, LL_GPIO_SPEED_FREQ_LOW);
  /* Reset value is LL_GPIO_PULL_NO */
  //LL_GPIO_SetPinPull(LED2_GPIO_PORT, LED2_PIN, LL_GPIO_PULL_NO);
}

/**
  * @brief  Turn-on LED2.
  * @param  None
  * @retval None
  */
void LED_On(void)
{
  /* Turn LED2 on */
  LL_GPIO_SetOutputPin(LED2_GPIO_PORT, LED2_PIN);
}

/**
  * @brief  Turn-off LED2.
  * @param  None
  * @retval None
  */
void LED_Off(void)
{
  /* Turn LED2 off */
  LL_GPIO_ResetOutputPin(LED2_GPIO_PORT, LED2_PIN);
}

/**
  * @brief  Set LED2 to Blinking mode for an infinite loop (toggle period based on value provided as input parameter).
  * @param  Period : Period of time (in ms) between each toggling of LED
  *   This parameter can be user defined values. Pre-defined values used in that example are :
  *     @arg LED_BLINK_FAST : Fast Blinking
  *     @arg LED_BLINK_SLOW : Slow Blinking
  *     @arg LED_BLINK_ERROR : Error specific Blinking
  * @retval None
  */
void LED_Blinking(uint32_t Period)
{
  /* Toggle LED2 in an infinite loop */
  while (1)
  {
    LL_GPIO_TogglePin(LED2_GPIO_PORT, LED2_PIN);
    LL_mDelay(Period);
  }
}

/**
  * @brief  Configures User push-button in GPIO or EXTI Line Mode.
  * @param  None
  * @retval None
  */
void UserButton_Init(void)
{
  /* Enable the BUTTON Clock */
  USER_BUTTON_GPIO_CLK_ENABLE();

  /* Configure GPIO for BUTTON */
  LL_GPIO_SetPinMode(USER_BUTTON_GPIO_PORT, USER_BUTTON_PIN, LL_GPIO_MODE_INPUT);

  /* Connect External Line to the GPIO*/
  USER_BUTTON_SYSCFG_SET_EXTI();

  /* Enable a rising trigger External line 13 Interrupt */
  USER_BUTTON_EXTI_LINE_ENABLE();
  USER_BUTTON_EXTI_FALLING_TRIG_ENABLE();

  /* Configure NVIC for USER_BUTTON_EXTI_IRQn */
  NVIC_EnableIRQ(USER_BUTTON_EXTI_IRQn);
  NVIC_SetPriority(USER_BUTTON_EXTI_IRQn, 0x03);
}

/**
  * @brief  Wait for User push-button press to start transfer.
  * @param  None
  * @retval None
  */
  /*  */
void WaitForUserButtonPress(void)
{
  while (ubButtonPress == 0)
  {
    LL_GPIO_TogglePin(LED2_GPIO_PORT, LED2_PIN);
    LL_mDelay(LED_BLINK_FAST);
  }
  /* Ensure that LED2 is turned Off */
  LED_Off();
}

/**
  * @brief  Wait end of transfer and check if received Data are well.
  * @param  None
  * @retval None
  */
void WaitAndCheckEndOfTransfer(void)
{
  /* 1 - Wait end of transmission */
  while (ubTransmissionComplete != 1)
  {
  }
  /* Disable DMA1 Tx Channel */
  LL_DMA_DisableChannel(DMA1, LL_DMA_CHANNEL_3);
  /* 2 - Wait end of reception */
  while (ubReceptionComplete != 1)
  {
  }
  /* Disable DMA1 Rx Channel */
  LL_DMA_DisableChannel(DMA1, LL_DMA_CHANNEL_4);
  /* 3 - Compare Transmit data to receive data */
  if(Buffercmp8((uint8_t*)aTxBuffer, (uint8_t*)aRxBuffer, ubNbDataToTransmit))
  {
    /* Processing Error */
    LED_Blinking(LED_BLINK_ERROR);
  }
  else
  {
    /* Turn On Led if data are well received */
    LED_On();
  }
}

/**
* @brief Compares two 8-bit buffers and returns the comparison result.
* @param pBuffer1: pointer to the source buffer to be compared to.
* @param pBuffer2: pointer to the second source buffer to be compared to the first.
* @param BufferLength: buffer's length.
* @retval   0: Comparison is OK (the two Buffers are identical)
*           Value different from 0: Comparison is NOK (Buffers are different)
*/
uint8_t Buffercmp8(uint8_t* pBuffer1, uint8_t* pBuffer2, uint8_t BufferLength)
{
  while (BufferLength--)
  {
    if (*pBuffer1 != *pBuffer2)
    {
      return 1;
    }

    pBuffer1++;
    pBuffer2++;
  }

  return 0;
}

/**
  * @brief  System Clock Configuration
  *         The system Clock is configured as follow :
  *            System Clock source            = PLL (HSE)
  *            SYSCLK(Hz)                     = 72000000
  *            HCLK(Hz)                       = 72000000
  *            AHB Prescaler                  = 1
  *            APB1 Prescaler                 = 2
  *            APB2 Prescaler                 = 1
  *            HSE Frequency(Hz)              = 8000000
  *            PLLMUL                         = 9
  *            Flash Latency(WS)              = 2
  * @param  None
  * @retval None
  */
void SystemClock_Config(void)
{
  /* Set FLASH latency */
  LL_FLASH_SetLatency(LL_FLASH_LATENCY_2);

  /* Enable HSE oscillator */
  LL_RCC_HSE_EnableBypass();
  LL_RCC_HSE_Enable();
  while(LL_RCC_HSE_IsReady() != 1)
  {
  };

  /* Main PLL configuration and activation */
  LL_RCC_PLL_ConfigDomain_SYS(LL_RCC_PLLSOURCE_HSE_DIV_1, LL_RCC_PLL_MUL_9);

  LL_RCC_PLL_Enable();
  while(LL_RCC_PLL_IsReady() != 1)
  {
  };

  /* Sysclk activation on the main PLL */
  LL_RCC_SetAHBPrescaler(LL_RCC_SYSCLK_DIV_1);
  LL_RCC_SetSysClkSource(LL_RCC_SYS_CLKSOURCE_PLL);
  while(LL_RCC_GetSysClkSource() != LL_RCC_SYS_CLKSOURCE_STATUS_PLL)
  {
  };

  /* Set APB1 & APB2 prescaler*/
  LL_RCC_SetAPB1Prescaler(LL_RCC_APB1_DIV_2);
  LL_RCC_SetAPB2Prescaler(LL_RCC_APB2_DIV_1);

  /* Set systick to 1ms in using frequency set to 72MHz */
  LL_Init1msTick(72000000);

  /* Update CMSIS variable (which can be updated also through SystemCoreClockUpdate function) */
  LL_SetSystemCoreClock(72000000);
}
/******************************************************************************/
/*   USER IRQ HANDLER TREATMENT Functions                                     */
/******************************************************************************/
/**
  * @brief  Function to manage User push-button
  * @param  None
  * @retval None
  */
void UserButton_Callback(void)
{
  /* Update User push-button variable : to be checked in waiting loop in main program */
  ubButtonPress = 1;
}

/**
  * @brief  Function called from DMA1 IRQ Handler when Tx transfer is completed
  * @param  None
  * @retval None
  */
void DMA1_TransmitComplete_Callback(void)
{
  /* DMA Tx transfer completed */
  ubTransmissionComplete = 1;
}

/**
  * @brief  Function called from DMA1 IRQ Handler when Rx transfer is completed
  * @param  None
  * @retval None
  */
void DMA1_ReceiveComplete_Callback(void)
{
  /* DMA Rx transfer completed */
  ubReceptionComplete = 1;
}

/**
  * @brief  Function called in case of error detected in SPI IT Handler
  * @param  None
  * @retval None
  */
void SPI_TransferError_Callback(void)
{
  /* Disable DMA1 Tx Channel */
  LL_DMA_DisableChannel(DMA1, LL_DMA_CHANNEL_3);
    /* Disable DMA1 Rx Channel */
  LL_DMA_DisableChannel(DMA1, LL_DMA_CHANNEL_4);

  /* Set LED2 to Blinking mode to indicate error occurs */
  LED_Blinking(LED_BLINK_ERROR);
}

#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", file, line) */

  /* Infinite loop */
  while (1)
  {
  }
}
#endif
/**
  * @}
  */

/**
  * @}
  */

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