Serial peripheral uart example not working

RE: Serial peripheral uart example not working

Jørgen Holmefjord — Tue, 16 Mar 2021 21:15:22 GMT

If you are using the example with two UARTEs (serial_uartes), then you also need to connect P0.26 to P0.27 on each DK. As described in the documentation, the UARTE0 RX input (P0.08) is output on TX (P0.27), and input is expected on UARTE1 RX (P0.26), which again will output the data to UATE1 TX output (P0.06).

The point of this example is just to show how you can use the library with two separate UARTE instances, it does not make sense to use it like this in any practical application.

RE: Serial peripheral uart example not working

amarin — Fri, 05 Mar 2021 15:32:42 GMT

It was working with the single instance when I was connecting the device's respective UART ports as so: RX > TX, RTS > CTS. However, when I was trying to connected the two devices together via their UART ports as so: RX1 > TX2, RX2 > TX1, RTS1 > CTS2 and RTS2 > CTS1 , it would not display the keys I pressed on my PC to the terminal.

Color	Connection
Red	RTS1 > CTS2
Green	TX1 > RX2
Red	CTS1 > RTS2
Yellow	RX1 > TX2

RE: Serial peripheral uart example not working

Jørgen Holmefjord — Fri, 05 Mar 2021 10:45:02 GMT

Hi,

The serial_uartes example is intended for showing how to use both UARTE instances in the nRF52840 chip, this is not required to communicate between two chips. The connections required for the example to work as expected is described in the example documentation.

Was it not working with the single instance serial examples?

Can you show/describe exactly how you connected the devices?

Best regards,
Jørgen