USART Central Echoing Data

RE: USART Central Echoing Data

Nicholas Lee — Sat, 22 Jun 2019 17:34:27 GMT

There is a line of code in the "central" example as follows:
#define ECHOBACK_BLE_UART_DATA 1 //< Echo the UART data that is received over the Nordic UART Service (NUS) back to the sender.

If you set the value to 0, instead of 1, then it stops echoing.

RE: USART Central Echoing Data

awneil — Tue, 28 May 2019 17:49:12 GMT

[quote userid="79959" url="~/f/nordic-q-a/47859/usart-central-echoing-data/189697"]Does NRF_DRV_UART_USE_UARTE mean that it echoes[/quote]

No - UARTE means "with EasyDMA":

https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.nrf52832.ps.v1.1/uarte.html?cp=3_1_0_34#concept_ayq_ycm_wr

RE: USART Central Echoing Data

firmware_master — Tue, 28 May 2019 15:31:06 GMT

No, I checked that. I digged through the code and I figured that the nrf_drv_uart_tx driver in the nus_data_handler in the peripheral device is messing things up for me. Does NRF_DRV_UART_USE_UARTE mean that it echoes? Compared to NRF_DRV_UART_USE_UART? It doesn't make sense.

RE: USART Central Echoing Data

awneil — Tue, 28 May 2019 14:59:24 GMT

Have you got your terminal set to local echo ... ?