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

[Narek Aleksanyan]

Have you set NRFX_RTC2_ENABLED and NRFX_TIMER2_ENABLED to 1 in your sdk_config.h?

[RAM_MS]

Hello Narek,

                  Yes obviously and disable legacy RTC2_ENABLED and TIMER2_ENABLED.

                  You can check the my code below.

                  

// <q> NRFX_RTC2_ENABLED  - Enable RTC2 instance

#ifndef NRFX_RTC2_ENABLED
#define NRFX_RTC2_ENABLED 1
#endif

// <q> NRFX_TIMER2_ENABLED  - Enable TIMER2 instance
 

#ifndef NRFX_TIMER2_ENABLED
#define NRFX_TIMER2_ENABLED 1
#endif

                  If  NRFX_RTC2_ENABLED  and NRFX_TIMER2_ENABLED not set to 1 ,then it will give error in compilation .

                  My compilation successfully done , but problem arises in the time of running .

                  memcpy(rx_buffer,p_evt->data.rxtx.p_data,p_evt->data.rxtx.length); gives me 

                  109,26556,0,3179,0,164,-5263,0,7646,9947,2,12345678 these value where 12 parameters is there with 11                      "," . I want to clear rx_buffer[] array when 12 parameters received and I tried with       memset(rx_buffer,0,sizeof(rx_buffer));  without success

Thanks 

Ram