RE: [nRF Connect SDK] Need UART implementation

Tim Hwang — Wed, 30 Mar 2022 08:24:59 GMT

And I had to add "CONFIG_UART_ASYNC_API=y" to use async uart.

It worked. Thank you!

RE: [nRF Connect SDK] Need UART implementation

Marte Myrvold — Tue, 29 Mar 2022 12:51:47 GMT

Hi,

The nRF52832 only has one UART. By default this is used for printing to console in the Peripheral HIDS keyboard sample, so in order to use the UART for something else you must make sure to disable this. with CONFIG_UART_CONSOLE=n.

Both enabling hardware flow control and setting baudrate can be done with devicetree, using the properties hw-flow-control and current-speed. This can be done by creating an overlay file, such as nrf52dk_nrf52832.overlay, and add the properties to uart0:

&uart0 {
	status = "okay";
	current-speed = <921600>;
	hw-flow-control;
};

Best regards,

Marte