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.

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[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]

Dear Øyvind, hello, I got no error,but one warning,

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compiling nrf_assert.c... compiling nrf_log.c... compiling retarget.c... compiling RTT_Syscalls_KEIL.c... compiling SEGGER_RTT.c... compiling SEGGER_RTT_printf.c... ............\external\segger_rtt\SEGGER_RTT_printf.c(300): warning: #111-D: statement is unreachable default: goto FilterFieldWidth; break; ............\external\segger_rtt\SEGGER_RTT_printf.c: 1 warning, 0 errors compiling softdevice_handler.c... assembling arm_startup_nrf51.s... compiling system_nrf51.c... linking...

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Could it be the issue of the content of "retarget.c" ? However, this is using codes of JLINK's segger_rtt. thank you very much and best regards~