Question about uart configurations for nRF52832 and nRF52840

[pigno5e]

Dear ,

I am currently testing the UART peripheral on nRF52832 and nRF52840 using nRF Connect SDK.

Basically, I have a sensor that continues sending out data via uart and I would like to use the uart peripheral to receive and parse the data packets. I checked the sample code provided as lpuart, but still have a few questions.

In the devicetree setup for the uart, there are REQ pin and RDY pin. Are these pins always compulsory for using lpuart? Can I use uart without configure these two pins, i.e. using only tx and rx pins?

As to the application I mentioned above, how can I set up an interrupt-driven process which will analyze each incoming byte once it's received?

If you could kindly provide a few advice and directions, it will be very helpful.

Thank you so much for your help and assistance.

Kind regards, Kevin

[viktor.kz]

Why use lpuart when you just need UART? You can use this BLE UART example from SDK and copy only the parts needed for UART - uart_init and uart_event_handle. The handle function will be then called from IRQ.

If you keep the flow control disabled like in the example, you need just the RX and TX pins.

[pigno5e]

Dear Viktor,

Thanks a lot for your help. I checked the example in the link, but I think it's based on the nRF52 SDK instead of the nRF Connect SDK.

Currently, I am having difficulties using the common uart peripheral for basic communication based on the nRF Connect SDK.

Kind regards, Kevin