Error uart example on nrf6310.

[Takatoshi Nao]

Hi

I'm trying to run uart example on nrf6310. I followed following link. devzone.nordicsemi.com/.../ and I defined ENABLE_LOOPBACK_TEST.

it was resulted in blinking led0. it means error. where is it wrong?

Edited:

[Vidar Berg]

Hi, did you make any changes to the example? I am not able to recreate the error you're seeing. Did you place a jumper on P2.1 and P2.2, and not on RXD and TXD on the board?

[Takatoshi Nao]

I didn't make any changes. only defined ENABLE_LOOPBACK_TEST. and i placed a jumper on P2.0-P2.1 and P2.2-P2.3 to RXD-TXD and CTS-RTS. and I set COM port. baud rate 38400, data bit 8, parity none, stop bit 1, flow control none. and I used Realterm.

[Vidar Berg]

You need short P.2.1 and P.2.0 in order for the loopback test to work. I edited my answer with the image showing the jumper placement.

[Takatoshi Nao]

Thanks Vidar. the loopback test works. but i'd like to check log through uart. and now i deleted ENABLE_LOOPBACK_TEST defined and tested it. but i can't do it because of garbled characters. i edited my question wih the image showing terminal.

[Takatoshi Nao]

solved by removing a jumper placed from P2.2-P2.3 to CTS-RTS. why was it solved? Please let me know.