Changing Hardware UART baudrate of nrf52dk in Zephyr?

RE: Changing Hardware UART baudrate of nrf52dk in Zephyr?

xproto — Thu, 02 Nov 2023 05:03:33 GMT

I have not finished it yesterday. After I upgrade SDK toolchains is missing and I cant fix it. Deleted everything this morning and reinstalled. I got it working.

The zephyr/nrf52dk_nrf52832.overlay doesn't work. Instead I used the visual editor and it made changes on app.overlay. Visual editor feature is awesome!

Thank you for the help Oivind!

RE: Changing Hardware UART baudrate of nrf52dk in Zephyr?

Øivind — Wed, 01 Nov 2023 17:38:11 GMT

Even parity is supported, and can be enabled with

CONFIG_UART_0_NRF_PARITY_BIT=y

Have you configured your app/monitor to the new parameters? Baudrate, parity etc.?

RE: Changing Hardware UART baudrate of nrf52dk in Zephyr?

xproto — Wed, 01 Nov 2023 13:33:07 GMT

Hello, thank you for reply. I'm using 1.7.1

Added zephyr/nrf52dk_nrf52832.overlay

&uart0 {
	status = "okay";
	compatible = "nordic,nrf-uarte";
	current-speed = <9600>;
	tx-pin = <6>;
	rx-pin = <8>;
};

I want to add this one for parity but it is not recognized.

nrf-uarte-parity = <UART_CFG_PARITY_EVEN>;

I'm trying to update the SDK to the latest. Still downloading. Or any other way to modify the parity?

RE: Changing Hardware UART baudrate of nrf52dk in Zephyr?

Øivind — Wed, 01 Nov 2023 12:43:15 GMT

Hi,

Which version of the nRF Connect SDK are you using?

You can change the initial baud rate for a uart instance in the overlay file for your board, for example for uart0:

&uart0 {
    current-speed = <9600>;
};

CONFIG_BT_NUS_UART_DEV is declared in the Kconfig file in the peripheral_uart folder. It is simply a string which specifies which uart instance should be used.