How should I correctly compile origial "nRF_Segger_RTT"?

[ruthertw]

Hi all,

I followed the tutorial listed below: devzone.nordicsemi.com/.../

I want to use SEGGER_RTT_printf but I always get this error: Error: L6218E: Undefined symbol SEGGER_RTT_printf (referred from main.o).

However, a senior enginneer at the office makes this happened:

He does not want to teach me how to implement it.

I read the documentation for the sdk11, but it didn't figure me out of it. SEGGER_RTT_WriteString worked fine.

Can anyone teach me?

Thanks a lot.

---

[Update above: with correct version of source codes of JLINK's segger_rtt] However, I still cannot compile RTT_Syscalls_KEIL.c

[Øyvind Karlsen]

Hi,

This error occurs when you have not added the paths for the .h files.

You need to add the path for RTT as described in the tutorial

This path is C:\Keil_v5\ARM\Pack\NordicSemiconductor\RTT

Best regards,

Øyvind

[ruthertw]

Thanks for Øyvind, it solves parts of warnings! I find that I should overwrite correct version of source codes with original JLINK's segger_rtt. However, I still cannot compile "RTT_Syscalls_KEIL.c". (shown as the picture updated above.) Thank you and best regards~

[Øyvind Karlsen]

Add C:\Keil_v5\ARM\Pack\NordicSemiconductor\Syscalls to the path

[ruthertw]

I have added these to Include paths: C:\Keil_v5\ARM\Pack\NordicSemiconductor\Syscalls; C:\Keil_v5\ARM\Pack\NordicSemiconductor\RTT; ............\external\segger_rtt; however, I still cannot compile "RTT_Syscalls_KEIL.c"

[Øyvind Karlsen]

And you have copied the syscalls folder from the RTT download?

[ruthertw]

Dear Øyvind, hello, yes, I have copied the syscalls folder from the RTT download. SEGGER_RTT_printf works well for me now, but "RTT_Syscalls_KEIL.c" still cannot be compiled. I have asked that senior enginneer again and again, he still does not wanna answer my question. thank you very much and best regards~