How to use RTT to debug NRF52833 in Zephyr project?

[Zach Liu]

I'm  doing with the nRF Connect SDK v.19.1, testing the project C:\ncs\v1.9.1\zephyr\samples\hello_world.

The main. c file is 

void main(void)
{
     printk("Hello World! %s\n", CONFIG_BOARD);
}

To obtain the information from printk function, I added the prj.conf file to the root directory of hello_world, the contents are as followings,

CONFIG_SERIAL=y
#CONFIG_UART_0_NRF_UARTE=y
CONFIG_NRFX_UARTE0=y
CONFIG_PWM=y

CONFIG_USE_SEGGER_RTT=y
CONFIG_RTT_CONSOLE=y
CONFIG_UART_CONSOLE=n

But unfortunately, I can not get any things in the  RTT Viewer V7.7.0. So it seems that the prj.conf does not work or not work correctly.

Are there any guys facing the same problem just like me and get the answers finally. Could you please share how to do with this. We'd really appreciate it.

Thanks so much.

[Hieu]

Hi, I was able to retarget printk() to RTT with the following prj.conf setup:

CONFIG_LOG=y

CONFIG_USE_SEGGER_RTT=y

CONFIG_RTT_CONSOLE=y

CONFIG_UART_CONSOLE=n

Could you please try on your end and see if it gets you the RTT output?

[Zach Liu]

Hi Hieu,

Based on your information. The RTT viewer is working now. Thank you so much.

[Hieu]

Glad to hear it. I have marked my previous reply as the answer then, I hope you don't mind. Reach out to us anytime if you have more questions :)