Libuarte+app template ERROR 0 [NRF_SUCCESS]

[Muqarrab]

Hi,
I have added libuarte example in-app template and sent data from Arduino to nRF52840 successfully. But after receiving some data and I am getting the following error. Any solution please?
Thanks!

[Jared]

Hi,

Have you remembered to free the RX buffer in the uart event handler? Could you show me how the handler has been implemented? 

regards

Jared 

[Muqarrab]

Thanks for the reply. Here is the function

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:
            break;
        case NRF_LIBUARTE_ASYNC_EVT_RX_DATA:

            if((unsigned char)*(p_evt->data.rxtx.p_data)!=0)
            {
                  received_data[count_data]=(unsigned char)*(p_evt->data.rxtx.p_data);
                  count_data=count_data+1;
                  if((unsigned char)*(p_evt->data.rxtx.p_data)==35)
                      data_completed=true;
            }

            m_loopback_phase = true;
            break;
        case NRF_LIBUARTE_ASYNC_EVT_TX_DONE:
            if (m_loopback_phase)
            {
                nrf_libuarte_async_rx_free(p_libuarte, p_evt->data.rxtx.p_data, p_evt->data.rxtx.length);
                if (!nrf_queue_is_empty(&m_buf_queue))
                {
                    buffer_t buf;
                    ret = nrf_queue_pop(&m_buf_queue, &buf);
                    APP_ERROR_CHECK(ret);
                    UNUSED_RETURN_VALUE(nrf_libuarte_async_tx(p_libuarte, buf.p_data, buf.length));
                }
            }

            printf("Tx Called\n");

            break;
        default:
            break;
    }
}


//UART

[Elfving]

Hello Muqarrab, sorry about the delay.

It does seem that the buffersize is too small for some reason.

As it has been 21 days, I guess I should ask if you have already figured it out?

Best regards,

Elfving

[Muqarrab]

Hi Elfving
I was on holiday and just join today :). Can you please point out the issue? how to resolve issue?
Thanks!

[Elfving]

Hello!

It seems that you are trying to free more space from the buffer than the actual buffer size is.

Have modified a lot of the example? Did it work earlier at any point? I believe this is a loop-back example, but I guess you are mainly planning on just using it for receiving the information from the Arduino, right?

Best regards,

Elfving