Debugging with nrf51 dongle

RE: Debugging with nrf51 dongle

dragilla — Wed, 24 Feb 2021 12:05:52 GMT

Hi,

I tried replicating this method using my blinky demo and while I get not error messages and the leds are blinking like they should both my UART and RTT are silent?

What am I doing wrong?

I tried setting the uart params:

#define NRF_LOG_BACKEND_SERIAL_USES_UART 1
#define NRF_LOG_BACKEND_SERIAL_UART_BAUDRATE 30924800
#define NRF_LOG_BACKEND_SERIAL_UART_FLOW_CONTROL 0

Also I have

#define NRF_LOG_BACKEND_SERIAL_USES_RTT 1

but this doesn't help.

I'm suspecting some j-tag configuration problem.

Also, when I try to switch on the Trace option in my Keil uVision IDE the program won't start in debug. It goes to blinking the greed led like crazy and when I stop the execution I can see it's in the HARD_FAULT section.

Please HELP! :)

RE: Debugging with nrf51 dongle

bojerko — Sun, 06 Aug 2017 15:32:06 GMT

Perfect. Managed to get RTT working in SDK12 and SDK11. Thanks.

RE: Debugging with nrf51 dongle

Turbo J — Sun, 06 Aug 2017 12:58:10 GMT

#define ENABLE_DEBUG_LOG_SUPPORT 1

This #define comes waaaay too late. It should go into the sdk_config.h file.

Note that NRF_LOG also supports SEGGER RTT mode, where no output would be sent to the UART.