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Using UARTE0 and UARTE1 in different pins ?

Dear Members,

I saw this example,

https://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.sdk5.v15.2.0%2Fserial_uartes_example.html

I can not find this example on SDK 17,

How can I use UARTE0 and UARTE1 on separate port ? one is for debugging via USB and the other one for communicating with GPS UART ?

Any suggestions ?

Thanks

  • I changed the configuration to :

    NRF_LIBUARTE_ASYNC_DEFINE(libuarte, 0, 0, 0, NRF_LIBUARTE_PERIPHERAL_NOT_USED, 255, 3);
    NRF_LIBUARTE_ASYNC_DEFINE(libuarte1, 1, 2, 2, NRF_LIBUARTE_PERIPHERAL_NOT_USED, 255, 3);

    but this line is not yet responding well,  :

    uint8_t data[512];

                  nrf_libuarte_async_rx_free(&libuarte1, (uint8_t *)&data, 512);
                  nrf_delay_ms(1000);
                  nrf_libuarte_async_tx(&libuarte, (uint8_t *)&data, 512);

    I want to receive from UART1 and t hen display it to UART0......

    Is it related with timer ?

    I can not find function for receiving ? where is it ? thank

  • Hi Jared,

    Here's the event UART1 Code :

    static uint8_t text2[] = "EVENT RX UART1 .\r\n ";

    void uart_event_handler1(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:
                           nrf_libuarte_async_tx(&libuarte, text2, text_size2);
                         nrf_libuarte_async_tx(&libuarte, p_evt->data.rxtx.p_data, p_evt->data.rxtx.length);
                        
                            
                break;
            case NRF_LIBUARTE_ASYNC_EVT_TX_DONE:
                
                bsp_board_led_invert(2);
                break;
            default:
                break;
            }    
            
    }   

    Output :

        EVENT RX UART1 .
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      EVÿUART example started.
     Loopback:
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      UART example libuarte loop.
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    What's the data variable for UART1 so I can display it on UART 0 ?

      nrf_libuarte_async_tx(&libuarte, p_evt->data.rxtx.p_data, p_evt->data.rxtx.length);

    p_evt->data.rxtx.p_data = UART1 data output ??

    Thanks

  • Hi,

    Could you put a breakpoint in the UARTE event handler and check that the correct event is generated when you send/receive data and check after the initialize routine that both functions are initialized correctly without any errors. The init functions should return 0 if they are initialized correctly. 

    Thank you!

    regards

    Jared 

  • Hi Jared, thanks for the reply

     case NRF_LIBUARTE_ASYNC_EVT_RX_DATA:
                           //nrf_libuarte_async_tx(&libuarte, text2, text_size2);
                         nrf_libuarte_async_tx(&libuarte, p_evt->data.rxtx.p_data, p_evt->data.rxtx.length);
                       

    I commented out the second line, now it's working,

    Thanks

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