Getting RTT Logging to work in SES

[morerook]

I am using the Nordic SDK 15.3 for nrf52832 development board. I am using SES as my development environment but I am unable to get RTT logging to work.

I have enabled RTT in sdk_config.h, and as far as I can tell, that is the only thing that is required to get the logging to work, but nothing shows up on the debug terminal. I am using the default TWI scanner example.

Any suggestions?

[Sigurd]

Hi,

Did you set NRF_LOG_BACKEND_RTT_ENABLED in sdk_config.h to 1 ?

And NRF_LOG_ENABLED is also 1 ?

[morerook]

Yes! Both are set to 1

[mzarling]

I am having the same problem with SDK version 15.3 only. Both items mentioned above are set to 1 and it still doesn't work. ble_app_template_pca10040_s132 project in SDK version 15.2 works with RTT and the above enables. ble_app_template_pca10040_s132 project in SDK version 15.3 does not work with RTT and the above enables. I am hesitating to migrate my custom firmware to SDK 15.3 for this reason.

[mzarling]

FYI, if I take sdk_config.h from version 15.2 ble_app_template_pca10040_s132 project and use it in version 15.3 ble_app_template_pca10040_s132 project, then RTT works. There is something in the new sdk_config.h in SDK version 15.3 causing RTT to not work.

[morerook]

I figured it out. I noticed I was getting new lines in the debug terminal and it was printing in RTT. Set: 

#define NRF_FPRINTF_FLAG_AUTOMATIC_CR_ON_LF_ENABLED 0

in sdk_config.h, I noticed that if I used TWI_sensor it works, but in TWI_scanner it doesn't work. Replacing the sdk_config in TWI_scanner from TWI_sensor fixed the issue.