Freemaster using J-link plugin for s32k144 microcontroller

[rohit1749]

I want to use Freemaster in my existing project for run-time debugging. I'm using segger j - link to communicate with freemaster.  I got below dialog box after test connection

I have modified the demo project freemaster_s32k144 such that it uses j-link to communicate with freemaster. What change should I make in the code.

In freemaster, I got below dialog box  after testing connection. 

rohit1749_0-1752484950038.png

 But after after starting communication, the variables are not updating.

rohit1749_1-1752484949636.png

Can someone tell me where I'm going wrong. I'm hereby attaching the zip folder of modified codebase.

[MichalH]

Hello, 

can you try to update the Jlink software on your PC and specify a newer version of the JLinkARM.dll?  It is also important to select S32K144 device as a specific "CPU Type" in the FreeMASTER communication settings:

MichalH_0-1752486770782.png

I will be able to test it on my side during this week, I'll give more information then. 

Regards,
Michal

[MichalH]

Hello,

I have just tested the FRDM-S32K144 communication from FreeMASTER and I confirm it works properly over the following interfaces:

• P&E firmware OpenSDA  (factory default)
• J-Link firmware OpenSDA  (your case)
• External J-Link

I'm using the J-Link software 8.12a and the J-Link firmware for OpenSDA V1 downloaded from here: https://kb.segger.com/NXP_S32K144EVB-Q100 

The test connection message shows a newer date than in your case. 

MichalH_1-1752565048889.png

Please try to update the JLink software and firmware.

Regards,
Michal

over a default P&E Micro OpenSDA f

[rohit1749]

I can't find SEGGER in my program files.

rohit1749_0-1752603375236.png

I have already installed the j link software, but its not there inside my program files.

Could you please provide the download link for the j link firmware.

Regards

[MichalH]

Hello,

the JLink software which includes the JLinkARM.dll needed by FreeMASTER can be downloaded from SEGGER here. It installs to "c:\Program Files\SEGGER\JLink"  by default.

The JLink OpenSDA V1 firmware, which can replace the default one from P&E Micro in the the S32K144 board can be downloaded here. This can be programmed to a board after you start it up with the Reset button pressed. A BOOTLOADER drive will appear in the attached PC and you simply copy the OpenSDA_V1.bin file to this drive, wait a few seconds and power cycle it again. More information can be found here.

Regards,
Michal

[rohit1749]

I tried updating segger DLL to version to 8.5 ,but still the response is same.

rohit1749_0-1752668443805.png

Do, I need to make any changes in  code of demo freemaster_s32k144 .I have attached the codebase of freemaster_s32k144.

The expected variable (adcRawValue) is getting updated in debug session of s32 design studio. But it's not updating in freemaster software as shown below.

rohit1749_1-1752668780130.png

Regards

Rohit

[MichalH]

Hello,

this issue should not depend on the application being debugged. I suspect that connecting FreeMASTER puts your application to debug-halt state but I have no explanation now. 

Some experiments to make:

- Make sure you disconnect the debugger (DS32) and reset the board before connecting FreeMASTER

- Press the Reset button while connected to FreeMASTER to see if it starts running (?)

- Have some test variable which is initialized to a non-zero value in main(). Show it in FreeMASTER - does it show the good value? Then make it modifiable in FreeMASTER and write some different value to it. Does the value change? Then disconnect/connect FreeMASTER and see the value - is it old or new value? (This experiment tests if a reset occurs when FreeMASTER connects).  

Thanks,
Michal