uart receive interrupt

[yokokawa]

OS in development environment ：Windows7
HARD :(Taiyo Yuden)EBSHSN Series Evaluation Board : Central / Peripherals
CPU :(Nordic) nRF52832 / ARMR Cortex-M4F 32 bit processor 28-pin Land Grid Array / 15GPIOs / SWD
Soft Ver:nRF5_SDK_15.3.0_59ac345

Is UART reception data stored in the reception buffer when "uart_event_handle ()" is executing and waiting for BLE transmission?

[Susheel Nuguru]

Yokokawa-san,

Can you please give us more context on the application you are making?

 

Is UART reception data stored in the reception buffer when "uart_event_handle ()" is executing and waiting for BLE transmission?

which uart_event_handle function are you referring to? is it in the main.c in ble_app_uart_c example? if yes, then it is saved in the data_array defined at the beginning of the function.

[yokokawa]

It uses uart_event_handle () of ble_app_uart.
The following processing is executed in the interrupt.
Multiple bytes could not be read.
--------------------------------------------------------------
switch (p_event->evt_type)
{
    case APP_UART_DATA_READY:
        for (index = 0; index < m_ble_nus_max_data_len ; index ++)
        {
             err_code = app_uart_get(&data_array[index]);
             if(err_code != NRF_SUCCESS){
                  break;
             }
        }
        if(index != 0){
            do
            {
                uint16_t length = (uint16_t)index;
                err_code = ble_nus_data_send(&m_nus, data_array, &length, m_conn_handle);
                if ((err_code != NRF_ERROR_INVALID_STATE) &&
                           (err_code != NRF_ERROR_RESOURCES) &&
                           (err_code != NRF_ERROR_NOT_FOUND))
                {
                    APP_ERROR_CHECK(err_code);
                }
            } while (err_code == NRF_ERROR_RESOURCES);
            index = 0;
        }
        break;
--------------------------------------------------------------
Is there a way to read multiple bytes?

[Susheel Nuguru]

This is duplicate thread to https://devzone.nordicsemi.com/f/nordic-q-a/53106/uart-communication-fifo-error. So please close this one.