LP-EM-CC2340R5:Continuous data transmission by basic_ble_GATT_client

Hi,

Thanks for reaching out. Because you are already using the basic_ble_GATT_client project sample, you can add a timer to send a message every 50ms in the app_menu.c file under the app folder: 

As an example, you can add your sending a message function every 50ms in the app_menu.c. Start a timer instance where you have a callback function that be called when the timer expired, set the time to set in the timer (50ms), a flag that indicates if the timer is periodic or not. An example below, please note that this will not work if you just copy and paste, this is just an example of how it may look like and you would need to setup your timer and setup as requirement for your code.

void sendMessage(timerHandle timerHandle, void *unused)
{
    static int i = 0;
    bStatus_t status;
    req.pValue = GATT_bm_alloc(menuCurrentConnHandle, ATT_WRITE_REQ, 1, NULL);
    req.len = 1;
    req.pValue[0] = i;
    req.sig = 0;
    req.cmd = 1;
    req.handle = CHAR_3_HDL;
    i++;

    status = GATT_WriteNoRsp(menuCurrentConnHandle, &req);
    MenuModule_printf(APP_MENU_GENERAL_STATUS_LINE, 0, "Call Status: GATTWrite = "
                      MENU_MODULE_COLOR_BOLD MENU_MODULE_COLOR_RED "%d" MENU_MODULE_COLOR_RESET,
                      status);
    if (status != SUCCESS)
    {
        GATT_bm_free((gattMsg_t *)&req, ATT_WRITE_REQ);
    }

}

void Menu_doSend(uint8 index)
{
    static bool timerStarted = false;
    static timerHandle timer;
    // Start pinging
    if (index == 0)
    {
        if (timerStarted)
        {
            MenuModule_printf(APP_MENU_GENERAL_STATUS_LINE, 0, "Call Status: ping already started");

        } else
        {
            timer = StartTimer(sendMessage, 50, true, NULL);
            timerStarted = true;
        }
    }
}

Regards,

Ivan