uart receive interrupt

RE: uart receive interrupt

Susheel Nuguru — Fri, 11 Oct 2019 07:36:56 GMT

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

RE: uart receive interrupt

yokokawa — Thu, 10 Oct 2019 01:05:11 GMT

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?

RE: uart receive interrupt

Susheel Nuguru — Wed, 09 Oct 2019 08:05:24 GMT

Yokokawa-san,

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

[quote user=""]Is UART reception data stored in the reception buffer when "uart_event_handle ()" is executing and waiting for BLE transmission?[/quote]

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.