RE: get data from uart receive buffer

haakonsh — Thu, 04 May 2017 12:08:24 GMT

Hey nordicbeginner,
I've made some modification to your event handler:

    void uart_error_handle(app_uart_evt_t * p_event)
    {
        static uint8_t data_array[CHOOSE_YOUR_SIZE];
        static uint8_t index = 0;
        uint32_t       err_code;
        
        if (p_event->evt_type == APP_UART_COMMUNICATION_ERROR)
        {
            APP_ERROR_HANDLER(p_event->data.error_communication);
        }
        else if (p_event->evt_type == APP_UART_FIFO_ERROR)
        {
            APP_ERROR_HANDLER(p_event->data.error_code);
        }
        if (p_event->evt_type == APP_UART_DATA_READY)
        {  
           err_code = app_uart_get(&data_array[index]);
           index++;
           /* TODO: Substitute '\n' in the statement below with the Modbus escape character, if 
               applicable */
           if ((data_array[index - 1] == '\n') || (index >= (CHOOSE_YOUR_SIZE)))
           {
                uart_callback(&data_array[0], index);

                if (err_code != NRF_ERROR_INVALID_STATE)
                {
                    APP_ERROR_CHECK(err_code);
                }

                index = 0;
            }

       }
    }

    void uart_callback(uint8_t * p_data, uint8_t length)
    {
        // TODO: Process 'data_array' of size 'length'.
    }

Cheers,
Håkon H