コード例 #1
0
ファイル: main.c プロジェクト: shjere/common
/**
  * @brief  Main program
  * @param  None
  * @retval None
  */
int main(void)
{
  /* STM32L0xx HAL library initialization:
       - Configure the Flash prefetch
       - Configure the Systick to generate an interrupt each 1 msec
       - Low Level Initialization */
  HAL_Init();

  /* Configure LED3 */
  BSP_LED_Init(LED3);
  BSP_LED_Init(LED4);

  /* Configure the system clock to 32 MHz */
  SystemClock_Config();

  /*##-1- Configure the LPUART peripheral ####################################*/
  /* Put the USART peripheral in the Asynchronous mode (UART Mode) */
  /* LPUART configured as follows:
      - Word Length = 8 Bits
      - Stop Bit = One Stop bit
      - Parity = None
      - BaudRate = 9600 baud
      - Hardware flow control disabled (RTS and CTS signals) */

  UartHandle.Instance        = USARTx;
  HAL_UART_DeInit(&UartHandle);

  UartHandle.Init.BaudRate   = 9600;
  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.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
  if(HAL_UART_Init(&UartHandle) != HAL_OK)
  {
    Error_Handler();
  }

#ifdef BOARD_IN_STOP_MODE
  
  BSP_LED_On(LED3);
  /* wait for two seconds before test start */
  HAL_Delay(2000);
  
  /* make sure that no LPUART transfer is on-going */ 
  while(__HAL_UART_GET_FLAG(&UartHandle, USART_ISR_BUSY) == SET);
  /* make sure that UART is ready to receive
  * (test carried out again later in HAL_UARTEx_StopModeWakeUpSourceConfig) */
  while(__HAL_UART_GET_FLAG(&UartHandle, USART_ISR_REACK) == RESET);

  /* set the wake-up event:
   * specify wake-up on RXNE flag */
  WakeUpSelection.WakeUpEvent = UART_WAKEUP_ON_READDATA_NONEMPTY;
  if (HAL_UARTEx_StopModeWakeUpSourceConfig(&UartHandle, WakeUpSelection)!= HAL_OK)
  {
    Error_Handler(); 
  }

  /* Enable the LPUART Wake UP from stop mode Interrupt */
  __HAL_UART_ENABLE_IT(&UartHandle, UART_IT_WUF);

  /* about to enter stop mode: switch off LED */
  BSP_LED_Off(LED3);
  /* enable MCU wake-up by LPUART */
  HAL_UARTEx_EnableStopMode(&UartHandle);

  /* enter stop mode */
  HAL_PWR_EnterSTOPMode(PWR_LOWPOWERREGULATOR_ON, PWR_STOPENTRY_WFI);

  /* ... STOP mode ... */  

  SystemClock_Config_fromSTOP();
  /* at that point, MCU has been awoken: the LED has been turned back on */
  /* Wake Up based on RXNE flag successful */ 
  HAL_UARTEx_DisableStopMode(&UartHandle);

  /* wait for some delay */
  HAL_Delay(100);
  
  /* Inform other board that wake up is successful */
  if (HAL_UART_Transmit(&UartHandle, (uint8_t*)aTxBuffer1, COUNTOF(aTxBuffer1)-1, 5000)!= HAL_OK)  
  {
    Error_Handler();
  }
  
  /*##-2- Wake Up second step  ###############################################*/
  /* make sure that no UART transfer is on-going */ 
  
  BSP_LED_On(LED3);
  /* wait for two seconds before test start */
  HAL_Delay(2000);
  
  while(__HAL_UART_GET_FLAG(&UartHandle, USART_ISR_BUSY) == SET);
  /* make sure that LPUART is ready to receive 
   * (test carried out again later in HAL_UARTEx_StopModeWakeUpSourceConfig) */    
  while(__HAL_UART_GET_FLAG(&UartHandle, USART_ISR_REACK) == RESET);
  
  /* set the wake-up event:
   * specify wake-up on start-bit detection */
  WakeUpSelection.WakeUpEvent = UART_WAKEUP_ON_STARTBIT;
  if (HAL_UARTEx_StopModeWakeUpSourceConfig(&UartHandle, WakeUpSelection)!= HAL_OK)
  {
    Error_Handler(); 
  }

  /* Enable the LPUART Wake UP from stop mode Interrupt */
  __HAL_UART_ENABLE_IT(&UartHandle, UART_IT_WUF);
  
  /* about to enter stop mode: switch off LED */
  BSP_LED_Off(LED3);
  
  /* enable MCU wake-up by LPUART */
  HAL_UARTEx_EnableStopMode(&UartHandle); 
  /* enter stop mode */
  HAL_PWR_EnterSTOPMode(PWR_LOWPOWERREGULATOR_ON, PWR_STOPENTRY_WFI);

  /* ... STOP mode ... */
   
  SystemClock_Config_fromSTOP();  
  /* at that point, MCU has been awoken: the LED has been turned back on */
  /* Wake Up on start bit detection successful */ 
  HAL_UARTEx_DisableStopMode(&UartHandle);
  
  /* wait for some delay */
  HAL_Delay(100);
  
  /* Inform other board that wake up is successful */
  if (HAL_UART_Transmit(&UartHandle, (uint8_t*)aTxBuffer2, COUNTOF(aTxBuffer2)-1, 5000)!= HAL_OK)  
  {
    Error_Handler();
  }
  
  /*##-3- Wake Up third step  ################################################*/
 /* make sure that no LPUART transfer is on-going */ 
  while(__HAL_UART_GET_FLAG(&UartHandle, USART_ISR_BUSY) == SET);
  /* make sure that UART is ready to receive
   * (test carried out again later in HAL_UARTEx_StopModeWakeUpSourceConfig) */
  while(__HAL_UART_GET_FLAG(&UartHandle, USART_ISR_REACK) == RESET);
     
  /* set the wake-up event:  
   * specify address-to-match type. 
   * The address is 0x29, meaning the character triggering the 
   * address match is 0xA9 */
  WakeUpSelection.WakeUpEvent = UART_WAKEUP_ON_ADDRESS;
  WakeUpSelection.AddressLength = UART_ADDRESS_DETECT_7B; 
  WakeUpSelection.Address = 0x29;  
  if (HAL_UARTEx_StopModeWakeUpSourceConfig(&UartHandle, WakeUpSelection)!= HAL_OK)
  {
    Error_Handler(); 
  }

  /* Enable the LPUART Wake UP from stop mode Interrupt */
  __HAL_UART_ENABLE_IT(&UartHandle, UART_IT_WUF);
  
  /* about to enter stop mode: switch off LED */
  BSP_LED_Off(LED3);
  /* enable MCU wake-up by LPUART */
  HAL_UARTEx_EnableStopMode(&UartHandle); 
  /* enter stop mode */
  HAL_PWR_EnterSTOPMode(PWR_LOWPOWERREGULATOR_ON, PWR_STOPENTRY_WFI);

  /* ... STOP mode ... */
   
  SystemClock_Config_fromSTOP();  
  /* at that point, MCU has been awoken: the LED has been turned back on */
  /* Wake Up on 7-bit address detection successful */ 
  HAL_UARTEx_DisableStopMode(&UartHandle);
  /* wait for some delay */
  HAL_Delay(100);
  /* Inform other board that wake up is successful */
  if (HAL_UART_Transmit(&UartHandle, (uint8_t*)aTxBuffer3, COUNTOF(aTxBuffer3)-1, 5000)!= HAL_OK)  
  {
    Error_Handler();
  } 
  
  /*##-4- Wake Up fourth step  ###############################################*/   
 /* make sure that no LPUART transfer is on-going */ 
  while(__HAL_UART_GET_FLAG(&UartHandle, USART_ISR_BUSY) == SET);
  /* make sure that UART is ready to receive
   * (test carried out again later in HAL_UARTEx_StopModeWakeUpSourceConfig) */      
  while(__HAL_UART_GET_FLAG(&UartHandle, USART_ISR_REACK) == RESET);
    
  /* set the wake-up event:  
   * specify address-to-match type. 
   * The address is 0x2, meaning the character triggering the 
   * address match is 0x82 */
  WakeUpSelection.WakeUpEvent = UART_WAKEUP_ON_ADDRESS;
  WakeUpSelection.AddressLength = UART_ADDRESS_DETECT_4B; 
  WakeUpSelection.Address = 0x2;  
  if (HAL_UARTEx_StopModeWakeUpSourceConfig(&UartHandle, WakeUpSelection)!= HAL_OK)
  {
    Error_Handler(); 
  }

  /* Enable the LPUART Wake UP from stop mode Interrupt */
  __HAL_UART_ENABLE_IT(&UartHandle, UART_IT_WUF);
  
  /* about to enter stop mode: switch off LED */
  BSP_LED_Off(LED3);
  /* enable MCU wake-up by LPUART */
  HAL_UARTEx_EnableStopMode(&UartHandle); 
  /* enter stop mode */
  HAL_PWR_EnterSTOPMode(PWR_LOWPOWERREGULATOR_ON, PWR_STOPENTRY_WFI);

  /* ... STOP mode ... */
  
  SystemClock_Config_fromSTOP();
  /* at that point, MCU has been awoken: the LED has been turned back on */
  /* Wake Up on 4-bit address detection successful */ 
  /* wait for some delay */
  HAL_Delay(100);
  /* Inform other board that wake up is successful */
  if (HAL_UART_Transmit(&UartHandle, (uint8_t*)aTxBuffer4, COUNTOF(aTxBuffer4)-1, 5000)!= HAL_OK)  
  {
    Error_Handler();
  } 
#else

/* initialize the User push-button in Interrupt mode */
  BSP_PB_Init(BUTTON_KEY, BUTTON_MODE_EXTI);
  
  /* Wait for User push-button press before starting the test.
     In the meantime, LED3 is blinking */
  while(UserButtonStatus == 0)
  {
    /* Toggle LED3 */
    BSP_LED_Toggle(LED3);
    HAL_Delay(100);
  }

  /*##-2- Send the wake-up from stop mode first trigger ######################*/
  /*      (RXNE flag setting)                                                 */
  BSP_LED_On(LED3);
  if(HAL_UART_Transmit(&UartHandle, (uint8_t*)aWakeUpTrigger1, COUNTOF(aWakeUpTrigger1)-1, 5000)!= HAL_OK)
  {
    Error_Handler();
  }
  
  /* Put LPUART peripheral in reception process to wait for other board
     wake up confirmation */  
  if(HAL_UART_Receive(&UartHandle, (uint8_t *)aRxBuffer, COUNTOF(aTxBuffer1)-1, 10000) != HAL_OK)
  {
    Error_Handler();
  } 
  BSP_LED_Off(LED3);
   
  /* Compare the expected and received buffers */
  if(Buffercmp((uint8_t*)aTxBuffer1,(uint8_t*)aRxBuffer,COUNTOF(aTxBuffer1)-1))
  {
    Error_Handler();
  } 

  /* wait for two seconds before test second step */
  HAL_Delay(2000);
  
  /*##-3- Send the wake-up from stop mode second trigger #####################*/
  /*      (start Bit detection)                                               */
  BSP_LED_On(LED3);  
  if(HAL_UART_Transmit(&UartHandle, (uint8_t*)aWakeUpTrigger2, COUNTOF(aWakeUpTrigger2)-1, 5000)!= HAL_OK)
  {
    Error_Handler();
  }

  /* Put LPUART peripheral in reception process to wait for other board
     wake up confirmation */  
  if(HAL_UART_Receive(&UartHandle, (uint8_t *)aRxBuffer, COUNTOF(aTxBuffer2)-1, 10000) != HAL_OK)
  {
    Error_Handler();
  } 
  BSP_LED_Off(LED3);
   
  /* Compare the expected and received buffers */
  if(Buffercmp((uint8_t*)aTxBuffer2,(uint8_t*)aRxBuffer,COUNTOF(aTxBuffer2)-1))
  {
    Error_Handler();
  } 

  /* wait for two seconds before test third step */
  HAL_Delay(2000);
  

  /*##-4- Send the wake-up from stop mode third trigger ######################*/
  /*      (7-bit address match)                                               */ 
  BSP_LED_On(LED3);  
  if(HAL_UART_Transmit(&UartHandle, (uint8_t*)aWakeUpTrigger3, 1, 5000)!= HAL_OK)
  {
    Error_Handler();
  }
 
  /* Put LPUART peripheral in reception process to wait for other board
     wake up confirmation */  
  if(HAL_UART_Receive(&UartHandle, (uint8_t *)aRxBuffer, COUNTOF(aTxBuffer3)-1, 10000) != HAL_OK)
  {
    Error_Handler();
  } 
  BSP_LED_Off(LED3);
   
  /* Compare the expected and received buffers */
  if(Buffercmp((uint8_t*)aTxBuffer3,(uint8_t*)aRxBuffer,COUNTOF(aTxBuffer3)-1))
  {
    Error_Handler();
  } 

  /* wait for two seconds before test fourth and last step */
  HAL_Delay(2000);


  /*##-5- Send the wake-up from stop mode fourth trigger #####################*/
  /*      (4-bit address match)                                               */  
  BSP_LED_On(LED3); 
  if(HAL_UART_Transmit(&UartHandle, (uint8_t*)aWakeUpTrigger4, 1, 5000)!= HAL_OK)
  {
    Error_Handler();
  }

  /* Put LPUART peripheral in reception process to wait for other board
     wake up confirmation */  
  if(HAL_UART_Receive(&UartHandle, (uint8_t *)aRxBuffer, COUNTOF(aTxBuffer4)-1, 10000) != HAL_OK)
  {
    Error_Handler();
  } 
  BSP_LED_Off(LED3);
   
  /* Compare the expected and received buffers */
  if(Buffercmp((uint8_t*)aTxBuffer4,(uint8_t*)aRxBuffer,COUNTOF(aTxBuffer4)-1))
  {
    Error_Handler();
  } 

  HAL_Delay(2000);

#endif /* BOARD_IN_STOP_MODE */
 
  /* Turn on LED3 & LED4 if test passes then enter infinite loop */
  BSP_LED_On(LED3); 
  BSP_LED_On(LED4); 
  while (1)
  {
  }
}
コード例 #2
0
ファイル: main.c プロジェクト: NjordCZ/stm32cubef0
/**
  * @brief  Main program
  * @param  None
  * @retval None
  */
int main(void)
{
#ifndef BOARD_IN_STOP_MODE
  GPIO_InitTypeDef  GPIO_InitStruct;
#endif
  /* STM32F0xx HAL library initialization:
       - Configure the Flash prefetch
       - Systick timer is configured by default as source of time base, but user 
             can eventually implement his proper time base source (a general purpose 
             timer for example or other time source), keeping in mind that Time base 
             duration should be kept 1ms since PPP_TIMEOUT_VALUEs are defined and 
             handled in milliseconds basis.
       - Low Level Initialization
     */
  HAL_Init();

  /* Configure the system clock to 48 MHz */
  SystemClock_Config();
  
  /* Configure LED3 */
  BSP_LED_Init(LED3);



#ifdef BOARD_IN_STOP_MODE  
  /* HSI must be UART clock source to be able to wake up the MCU */
  __HAL_RCC_USART1_CONFIG(RCC_USART1CLKSOURCE_HSI);
#endif
  
  /*##-1- Configure the UART peripheral ######################################*/
  /* Put the USART peripheral in the Asynchronous mode (UART Mode) */
  /* UART configured as follows:
      - Word Length = 8 Bits
      - Stop Bit = One Stop bit
      - Parity = None
      - BaudRate = 9600 baud
      - Hardware flow control disabled (RTS and CTS signals) */
   
  UartHandle.Instance        = USARTx;
  HAL_UART_DeInit(&UartHandle); 

  UartHandle.Init.BaudRate   = 9600;
  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.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
  
  
  if(HAL_UART_Init(&UartHandle) != HAL_OK)
  {
    Error_Handler();
  }
  
#ifdef BOARD_IN_STOP_MODE
  
    BSP_LED_On(LED3);
    /* wait for two seconds before test start */
    HAL_Delay(2000);
  
   /* make sure that no UART transfer is on-going */ 
   while(__HAL_UART_GET_FLAG(&UartHandle, USART_ISR_BUSY) == SET);
   /* make sure that UART is ready to receive
   * (test carried out again later in HAL_UARTEx_StopModeWakeUpSourceConfig) */   
   while(__HAL_UART_GET_FLAG(&UartHandle, USART_ISR_REACK) == RESET);

  /* set the wake-up event:
   * specify wake-up on RXNE flag */
  WakeUpSelection.WakeUpEvent = UART_WAKEUP_ON_READDATA_NONEMPTY;
  if (HAL_UARTEx_StopModeWakeUpSourceConfig(&UartHandle, WakeUpSelection)!= HAL_OK)
  {
    Error_Handler(); 
  }
 
  /* Enable the UART Wake UP from stop mode Interrupt */
  __HAL_UART_ENABLE_IT(&UartHandle, UART_IT_WUF);
  
  /* about to enter stop mode: switch off LED */
  BSP_LED_Off(LED3);
  /* enable MCU wake-up by UART */
  HAL_UARTEx_EnableStopMode(&UartHandle); 
  /* enter stop mode */
  HAL_PWR_EnterSTOPMode(PWR_LOWPOWERREGULATOR_ON, PWR_STOPENTRY_WFI);

  /* ... STOP mode ... */  
  
  
  SystemClock_Config_fromSTOP();
  /* at that point, MCU has been awoken: the LED has been turned back on */
  /* Wake Up based on RXNE flag successful */ 
  HAL_UARTEx_DisableStopMode(&UartHandle);

  /* wait for some delay */
  HAL_Delay(100);
  /* Inform other board that wake up is successful */
  if (HAL_UART_Transmit(&UartHandle, (uint8_t*)aTxBuffer1, COUNTOF(aTxBuffer1)-1, 5000)!= HAL_OK)  
  {
    Error_Handler();
  }  
  
  /*##-2- Wake Up second step  ###############################################*/
  /* make sure that no UART transfer is on-going */ 
  while(__HAL_UART_GET_FLAG(&UartHandle, USART_ISR_BUSY) == SET);
  /* make sure that UART is ready to receive 
   * (test carried out again later in HAL_UARTEx_StopModeWakeUpSourceConfig) */    
  while(__HAL_UART_GET_FLAG(&UartHandle, USART_ISR_REACK) == RESET);
  
  /* set the wake-up event:
   * specify wake-up on start-bit detection */
  WakeUpSelection.WakeUpEvent = UART_WAKEUP_ON_STARTBIT;
  if (HAL_UARTEx_StopModeWakeUpSourceConfig(&UartHandle, WakeUpSelection)!= HAL_OK)
  {
    Error_Handler(); 
  }

  /* Enable the UART Wake UP from stop mode Interrupt */
  __HAL_UART_ENABLE_IT(&UartHandle, UART_IT_WUF);
  
  /* about to enter stop mode: switch off LED */
  BSP_LED_Off(LED3);
  /* enable MCU wake-up by UART */
  HAL_UARTEx_EnableStopMode(&UartHandle); 
  /* enter stop mode */
  HAL_PWR_EnterSTOPMode(PWR_LOWPOWERREGULATOR_ON, PWR_STOPENTRY_WFI);

  /* ... STOP mode ... */
   
  SystemClock_Config_fromSTOP();
  /* at that point, MCU has been awoken: the LED has been turned back on */
  /* Wake Up on start bit detection successful */ 
  HAL_UARTEx_DisableStopMode(&UartHandle);
  /* wait for some delay */
  HAL_Delay(100);
  /* Inform other board that wake up is successful */
  if (HAL_UART_Transmit(&UartHandle, (uint8_t*)aTxBuffer2, COUNTOF(aTxBuffer2)-1, 5000)!= HAL_OK)  
  {
    Error_Handler();
  }   
  
  
  /*##-3- Wake Up third step  ################################################*/
 /* make sure that no UART transfer is on-going */ 
  while(__HAL_UART_GET_FLAG(&UartHandle, USART_ISR_BUSY) == SET);
  /* make sure that UART is ready to receive
   * (test carried out again later in HAL_UARTEx_StopModeWakeUpSourceConfig) */       
  while(__HAL_UART_GET_FLAG(&UartHandle, USART_ISR_REACK) == RESET);
     
  /* set the wake-up event:  
   * specify address-to-match type. 
   * The address is 0x29, meaning the character triggering the 
   * address match is 0xA9 */
  WakeUpSelection.WakeUpEvent = UART_WAKEUP_ON_ADDRESS;
  WakeUpSelection.AddressLength = UART_ADDRESS_DETECT_7B; 
  WakeUpSelection.Address = 0x29;  
  if (HAL_UARTEx_StopModeWakeUpSourceConfig(&UartHandle, WakeUpSelection)!= HAL_OK)
  {
    Error_Handler(); 
  }

  /* Enable the UART Wake UP from stop mode Interrupt */
  __HAL_UART_ENABLE_IT(&UartHandle, UART_IT_WUF);
  
  /* about to enter stop mode: switch off LED */
  BSP_LED_Off(LED3);
  /* enable MCU wake-up by UART */
  HAL_UARTEx_EnableStopMode(&UartHandle); 
  /* enter stop mode */
  HAL_PWR_EnterSTOPMode(PWR_LOWPOWERREGULATOR_ON, PWR_STOPENTRY_WFI);

  /* ... STOP mode ... */
  SystemClock_Config_fromSTOP();
  /* at that point, MCU has been awoken: the LED has been turned back on */
  /* Wake Up on 7-bit address detection successful */ 
  HAL_UARTEx_DisableStopMode(&UartHandle);
  /* wait for some delay */
  HAL_Delay(100);
  /* Inform other board that wake up is successful */
  if (HAL_UART_Transmit(&UartHandle, (uint8_t*)aTxBuffer3, COUNTOF(aTxBuffer3)-1, 5000)!= HAL_OK)  
  {
    Error_Handler();
  } 
  

  /*##-4- Wake Up fourth step  ###############################################*/   
 /* make sure that no UART transfer is on-going */ 
  while(__HAL_UART_GET_FLAG(&UartHandle, USART_ISR_BUSY) == SET);
  /* make sure that UART is ready to receive
   * (test carried out again later in HAL_UARTEx_StopModeWakeUpSourceConfig) */      
  while(__HAL_UART_GET_FLAG(&UartHandle, USART_ISR_REACK) == RESET);
    
  /* set the wake-up event:  
   * specify address-to-match type. 
   * The address is 0x2, meaning the character triggering the 
   * address match is 0x82 */
  WakeUpSelection.WakeUpEvent = UART_WAKEUP_ON_ADDRESS;
  WakeUpSelection.AddressLength = UART_ADDRESS_DETECT_4B; 
  WakeUpSelection.Address = 0x2;  
  if (HAL_UARTEx_StopModeWakeUpSourceConfig(&UartHandle, WakeUpSelection)!= HAL_OK)
  {
    Error_Handler(); 
  }

  /* Enable the UART Wake UP from stop mode Interrupt */
  __HAL_UART_ENABLE_IT(&UartHandle, UART_IT_WUF);
  
  /* about to enter stop mode: switch off LED */
  BSP_LED_Off(LED3);
  /* enable MCU wake-up by UART */
  HAL_UARTEx_EnableStopMode(&UartHandle); 
  /* enter stop mode */
  HAL_PWR_EnterSTOPMode(PWR_LOWPOWERREGULATOR_ON, PWR_STOPENTRY_WFI);

  /* ... STOP mode ... */
  SystemClock_Config_fromSTOP();
  /* at that point, MCU has been awoken: the LED has been turned back on */
  /* Wake Up on 4-bit address detection successful */ 
  /* wait for some delay */
  HAL_Delay(100);
  /* Inform other board that wake up is successful */
  if (HAL_UART_Transmit(&UartHandle, (uint8_t*)aTxBuffer4, COUNTOF(aTxBuffer4)-1, 5000)!= HAL_OK)  
  {
    Error_Handler();
  } 

  
#else

  /* Configure PA.12 (Arduino D2) as input with External interrupt */
  GPIO_InitStruct.Pin = GPIO_PIN_12;
  GPIO_InitStruct.Pull = GPIO_PULLUP;
  GPIO_InitStruct.Mode = GPIO_MODE_IT_RISING;

  /* Enable GPIOA clock */
  __HAL_RCC_GPIOA_CLK_ENABLE();

  HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

  /* Enable and set PA.12 (Arduino D2) EXTI Interrupt to the lowest priority */
  NVIC_SetPriority((IRQn_Type)(EXTI4_15_IRQn), 0x03);
  HAL_NVIC_EnableIRQ((IRQn_Type)(EXTI4_15_IRQn));
  /* Wait for the user to set GPIOA to GND before starting the Communication.
     In the meantime, LED3 is blinking */
  while(VirtualUserButtonStatus == 0)
  {
      /* Toggle LED3*/
      BSP_LED_Toggle(LED3);
      HAL_Delay(100);
  }

  
  
  /*##-2- Send the wake-up from stop mode first trigger ######################*/
  /*      (RXNE flag setting)                                                 */
  BSP_LED_On(LED3);
  if(HAL_UART_Transmit(&UartHandle, (uint8_t*)aWakeUpTrigger1, COUNTOF(aWakeUpTrigger1)-1, 5000)!= HAL_OK)
  {
    Error_Handler();
  }
  
  /* Put UART peripheral in reception process to wait for other board
     wake up confirmation */  
  if(HAL_UART_Receive(&UartHandle, (uint8_t *)aRxBuffer, COUNTOF(aTxBuffer1)-1, 10000) != HAL_OK)
  {
    Error_Handler();
  } 
  BSP_LED_Off(LED3);
   
  /* Compare the expected and received buffers */
  if(Buffercmp((uint8_t*)aTxBuffer1,(uint8_t*)aRxBuffer,COUNTOF(aTxBuffer1)-1))
  {
    Error_Handler();
  } 

  /* wait for two seconds before test second step */
  HAL_Delay(2000);
  
  /*##-3- Send the wake-up from stop mode second trigger #####################*/
  /*      (start Bit detection)                                               */
  BSP_LED_On(LED3);  
  if(HAL_UART_Transmit(&UartHandle, (uint8_t*)aWakeUpTrigger2, COUNTOF(aWakeUpTrigger2)-1, 5000)!= HAL_OK)
  {
    Error_Handler();
  }

  /* Put UART peripheral in reception process to wait for other board
     wake up confirmation */  
  if(HAL_UART_Receive(&UartHandle, (uint8_t *)aRxBuffer, COUNTOF(aTxBuffer2)-1, 10000) != HAL_OK)
  {
    Error_Handler();
  } 
  BSP_LED_Off(LED3);
   
  /* Compare the expected and received buffers */
  if(Buffercmp((uint8_t*)aTxBuffer2,(uint8_t*)aRxBuffer,COUNTOF(aTxBuffer2)-1))
  {
    Error_Handler();
  } 

  /* wait for two seconds before test third step */
  HAL_Delay(2000);


  /*##-4- Send the wake-up from stop mode third trigger ######################*/
  /*      (7-bit address match)                                               */ 
  BSP_LED_On(LED3);  
  if(HAL_UART_Transmit(&UartHandle, (uint8_t*)aWakeUpTrigger3, 1, 5000)!= HAL_OK)
  {
    Error_Handler();
  }
 
  /* Put UART peripheral in reception process to wait for other board
     wake up confirmation */  
  if(HAL_UART_Receive(&UartHandle, (uint8_t *)aRxBuffer, COUNTOF(aTxBuffer3)-1, 10000) != HAL_OK)
  {
    Error_Handler();
  } 
  BSP_LED_Off(LED3);
   
  /* Compare the expected and received buffers */
  if(Buffercmp((uint8_t*)aTxBuffer3,(uint8_t*)aRxBuffer,COUNTOF(aTxBuffer3)-1))
  {
    Error_Handler();
  } 

  /* wait for two seconds before test fourth and last step */
  HAL_Delay(2000);


  /*##-5- Send the wake-up from stop mode fourth trigger #####################*/
  /*      (4-bit address match)                                               */  
  BSP_LED_On(LED3); 
  if(HAL_UART_Transmit(&UartHandle, (uint8_t*)aWakeUpTrigger4, 1, 5000)!= HAL_OK)
  {
    Error_Handler();
  }
 
  
  /* Put UART peripheral in reception process to wait for other board
     wake up confirmation */  
  if(HAL_UART_Receive(&UartHandle, (uint8_t *)aRxBuffer, COUNTOF(aTxBuffer4)-1, 10000) != HAL_OK)
  {
    Error_Handler();
  } 
  BSP_LED_Off(LED3);
   
  /* Compare the expected and received buffers */
  if(Buffercmp((uint8_t*)aTxBuffer4,(uint8_t*)aRxBuffer,COUNTOF(aTxBuffer4)-1))
  {
    Error_Handler();
  } 

  HAL_Delay(2000);

#endif /* BOARD_IN_STOP_MODE */


  
  /* Turn on LED3 if test passes then enter infinite loop */
  BSP_LED_On(LED3); 
  while (1)
  {
  }
}