libuarte with softdevice (ble_app_beacon ) giving fatal error in execution time.

[RAM_MS]

Hello, 

I want to use libuarte - advanced UARTE driver in our current application developed for nRF52832 with SDK 17.0.2.

My aim is to merge example libuarte and ble_app_beacon .

Because in my application I am receiving 48bytes of sensor data from uart and want to beaconing 4 bytes of data by processing those datas.

Given that fact that SoftDevice requires RTC0 and Timer0 and app_timer library consumes RTC1, I used RTC2 and Timer2 for libuarte implementation:

NRF_LIBUARTE_ASYNC_DEFINE(libuarte, 0, 2, 2, NRF_LIBUARTE_PERIPHERAL_NOT_USED, 255, 3);

I followed this ticket  https://devzone.nordicsemi.com/f/nordic-q-a/41215/general-libuarte-questions  and my project successfully built but problem comes in execution time .

After receiving some bytes program goes to in fatal error . I can't find out what is the issue ?

Here is snippet of my libuarte code .

void uart_event_handler(void * context, nrf_libuarte_async_evt_t * p_evt)
{
    nrf_libuarte_async_t * p_libuarte = (nrf_libuarte_async_t *)context;

    
    ret_code_t ret;

    switch (p_evt->type)
    {
        case NRF_LIBUARTE_ASYNC_EVT_ERROR:
            bsp_board_led_invert(0);
            break;
        case NRF_LIBUARTE_ASYNC_EVT_RX_DATA:
            
            memcpy(rx_buffer,p_evt->data.rxtx.p_data,p_evt->data.rxtx.length);
            
            nrf_libuarte_async_rx_free(p_libuarte, p_evt->data.rxtx.p_data, p_evt->data.rxtx.length);
            
            break;
        
        default:
            break;
    }
}


void uart_init()
{
 uint32_t err_code;
 nrf_libuarte_async_config_t nrf_libuarte_async_config = {
            .tx_pin     = TX_PIN_NUMBER,
            .rx_pin     = RX_PIN_NUMBER,
            .baudrate   = NRF_UARTE_BAUDRATE_19200,
            .parity     = NRF_UARTE_PARITY_EXCLUDED,
            .hwfc       = NRF_UARTE_HWFC_DISABLED,
            .timeout_us = 100,
            .int_prio   = APP_IRQ_PRIORITY_LOW
    };

    err_code = nrf_libuarte_async_init(&libuarte, &nrf_libuarte_async_config, uart_event_handler, (void *)&libuarte);

    APP_ERROR_CHECK(err_code);

    nrf_libuarte_async_enable(&libuarte);
}

Thanks in advance for your time and efforts.

Ram

[Jørgen Holmefjord]

Hi,

If you build the application in debug configuration (with the DEBUG preprocessor symbol set), you should get the actual error code, along with the file name and line number output on the log.

This will make it easier to help you determine the cause of the issue.

You can find an existing example of using libUARTE together with BLE in this post, for reference.

Best regards,
Jørgen