How can i change RX TX pin of UART?

RE: How can i change RX TX pin of UART?

Sangkyu — Wed, 24 Aug 2016 11:51:00 GMT

Thanks psharma, you are right. I change the APP_UART_FLOW_CONTROL_DISABLED the source is well run. Thank you. I appreciate it.

RE: How can i change RX TX pin of UART?

Sangkyu — Wed, 24 Aug 2016 11:07:16 GMT

my board is custom board. It is MDBT40 made by Raytac corp.

RE: How can i change RX TX pin of UART?

psharma — Wed, 24 Aug 2016 10:52:01 GMT

Is this on the PCA10028 board, or a custom board? On PCA10028, nRF51 pin 11 (RX) is connected to TX of J-Link virtual serial port, and pin 9 (TX) is connected to RX of J-Link virtual serial port.

When you are swapping these two in your main.c, it will mostly likely cause an error as the pins are hard-wired, and the J-link is pulling up one of these pins (speculating). If you need to do a loop-back test, you can use any other freely available pins that are not hardwired, short them, and disable flow control.

In case you are using a custom board and swapping these pins, then make sure you have the BOARD_CUSTOM flag set in the compiler. Also you have flow control enabled, so take care of that as well (on custom board).

RE: How can i change RX TX pin of UART?

psharma — Wed, 24 Aug 2016 10:51:41 GMT

Is this on the PCA10028 board, or a custom board? On PCA10028, nRF51 pin 11 (RX) is connected to TX of J-Link virtual serial port, and pin 9 (TX) is connected to RX of J-Link virtual serial port.