RTOS/LAUNCHXL-CC2650: Reading UART from pin and reporting through HID over GATT BLE

Part Number:LAUNCHXL-CC2650

Tool/software:TI-RTOS

Hello,

I have a board which receives chars from UART connection.

I want to transfer those chars through BLE, I based on the hid_emu_kbd example project - I wish my project to pair with another BLE supporting device, and send it with the HidEmuKbd_sendReport function from the example project.

Currently what I did was to init UART in HidEmuKbd_init, creating a UART Params struct and opening UART with UART_open.

  Board_initUART();

  /* Create a UART with data processing off. */
  UART_Params_init(&uartParams);
  uartParams.readDataMode = UART_DATA_BINARY;
  uartParams.readReturnMode = UART_RETURN_FULL;
  uartParams.readEcho = UART_ECHO_OFF;
  uartParams.baudRate = 115200;
  uartParams.readMode = UART_MODE_CALLBACK;
  uartParams.readCallback = &readCallbackFxn;

  uart = UART_open(Board_UART0, &uartParams);

In the struct, I defined a read callback function (currently I want to send C instead of what I read).

 static void readCallbackFxn(UART_Handle handle, void *rxBuf, size_t size)
  {
         uint8_t keycode = *((uint8_t*)(rxBuf));
       HidEmuKbd_sendReport(HID_KEYBOARD_C);
       HidEmuKbd_sendReport(KEY_NONE);
       is_read_req = 0;
   SimpleBLECentral_startReadHandler();
  }

Then in HidEmuKbd_taskFxn, I do an UART_read, inside the for loop. This calls SimpleBLECentral_startReadHandler:

 static void SimpleBLECentral_startReadHandler()
 {
   // Store the event.
   events |= HIDEMUKBD_READ_EVT;

   // Wake up the application.
   Semaphore_post(sem);

}

 When I have no wire in the UART rx pin, the BLE works good (I am also debugging using the buttons on board, sending A and B)

Once I connect to UART, the project stucks and even the buttons don't work.

What am I am doing wrong? Is there another configuration I should use in order to accomplish my purpose?

Thanks