HC-06 Bluetooth Module Configure with UART

Posted on July 11, 2014 at 19:01

Hi,

I would like to know if it would be better to send AT commands to the HC-06 Bluetooth module via an interrupt handler or a while(1) in the main as well as some pointers on the code I am trying to get correct and working. I am not sure if I require delays to allow module to reply. Perhaps some kind of scan and printf to see what is being sent and received would help, something like below?

void USART1_IRQHandler(void)

{

  static int tx_index = 0;

  static int rx_index = 0;

    char StringRX[12];

    volatile char StringAT[] = ''AT'';

    volatile char StringBAUD[] = ''AT+BAUD4'';

    volatile char StringNAME[] = ''AT+NAMETest'';

    volatile char StringPIN[] = ''AT+PIN4321'';

  // ------------------StringAT------------------

  if (USART_GetITStatus(USART1, USART_IT_TXE) != RESET)        

  {

    USART_SendData(USART1, StringAT[tx_index++]);

   

    if (tx_index >= (sizeof(StringRX) - 1))

      tx_index = 0;

  }

    

    if (USART_GetITStatus(USART1, USART_IT_RXNE) != RESET) // Received characters modify string

  {

    StringRX[rx_index++] = USART_ReceiveData(USART1);

   

    if (rx_index >= (sizeof(StringRX) - 1))

      rx_index = 0;

  }

    

    // ------------------StringBAUD------------------

    if (USART_GetITStatus(USART1, USART_IT_TXE) != RESET) // Transmit the string in a loop

  {

    USART_SendData(USART1, StringBAUD[tx_index++]);

   

    if (tx_index >= (sizeof(StringRX) - 1))

      tx_index = 0;

    }

    

    if (USART_GetITStatus(USART1, USART_IT_RXNE) != RESET) // Received characters modify string

  {

    StringRX[rx_index++] = USART_ReceiveData(USART1);

   

    if (rx_index >= (sizeof(StringRX) - 1))

      rx_index = 0;

  }

    

    // ------------------StringNAME------------------

    if (USART_GetITStatus(USART1, USART_IT_TXE) != RESET) // Transmit the string in a loop

  {

    USART_SendData(USART1, StringNAME[tx_index++]);

   

    if (tx_index >= (sizeof(StringRX) - 1))

      tx_index = 0;

  }

    

    if (USART_GetITStatus(USART1, USART_IT_RXNE) != RESET) // Received characters modify string

  {

    StringRX[rx_index++] = USART_ReceiveData(USART1);

   

    if (rx_index >= (sizeof(StringRX) - 1))

      rx_index = 0;

  }

    

    // ------------------StringPIN------------------

    if (USART_GetITStatus(USART1, USART_IT_TXE) != RESET) // Transmit the string in a loop

  {

    USART_SendData(USART1, StringPIN[tx_index++]);

   

    if (tx_index >= (sizeof(StringRX) - 1))

      tx_index = 0;

  }

    

    if (USART_GetITStatus(USART1, USART_IT_RXNE) != RESET) // Received characters modify string

  {

    StringRX[rx_index++] = USART_ReceiveData(USART1);

   

    if (rx_index >= (sizeof(StringRX) - 1))

      rx_index = 0;

  }

}

#at-command