topic Re: S32K312EVB-Q172 debug using Lauterbach debugger in S32K

S32K312EVB-Q172 debug using Lauterbach debugger

AshishDargad — Tue, 01 Jul 2025 09:14:22 GMT

I am using Lauterbach debugger to flash and debug code on EVB.

I am making use of demo cmm files provided along with T32 lauterbach SW.

Whenever SYStem.UP command is executed, it is giving error as Debugger is in down state.

On EVB all jumpers are in its default state.

Re: S32K312EVB-Q172 debug using Lauterbach debugger

AshishDargad — Tue, 01 Jul 2025 10:00:54 GMT

I have done connections as below for JTAG connector from 10 pin to 20 pin lauterbach connector of LA-7844 debug cable

10 pin 20 pin ARM Standard JTAG

1 VCC 1 VREF-DEBUG

2 TMS 7 TMS

4 TCLK 9 TCLK

6 TDO 13 TDO

8 TDI 5 TDI

10 RST 15 RESET

3,5,7,9 GND 4,6,8,10,12,14,16,18,20 GND

Re: S32K312EVB-Q172 debug using Lauterbach debugger

Julián_AragónM — Tue, 01 Jul 2025 16:37:54 GMT

Hi @AshishDargad,

Could you confirm if the status LEDs from the EVB are all on, as described from the getting started?

Have you tested other debuggers on the EVB? You can also follow this trouble shooting guide from Lauterbach: [Arm] SYStem.Up / SYStem.Attach returns "debug port fail" - Knowledgebase / FAQs by core architecture / Arm - Lauterbach Support.

Best regards,
Julián

Re: S32K312EVB-Q172 debug using Lauterbach debugger

AshishDargad — Wed, 02 Jul 2025 02:37:36 GMT

LED D1, D2, D4, D5 are on when 12 V supply is connected. I have only Lauterbach debugger. I already checked the Lauterbach link you mentioned but it did not work.

Re: S32K312EVB-Q172 debug using Lauterbach debugger

AshishDargad — Wed, 02 Jul 2025 05:14:25 GMT

Why there are two JTAG connectors on EVB? Please refer attached image. When I initially attached debugger to green color highlighted connector, it does not work. When I connect it to J12 highlighted with pink color, it worked.

Also problem is that I do not find JTAG connector highlighted with green color in design files schematic and PCB layout. I can find only J12 connector.

Hope this post will help others who have same confusion as me.

Re: S32K312EVB-Q172 debug using Lauterbach debugger

Julián_AragónM — Wed, 02 Jul 2025 15:40:14 GMT

Hi @AshishDargad,

The pink interface you highlighted refers to J12, which is the debug connector for the S32K312 MCU. The J41 interface is connected to the On-Board debugger for communication with the MK26.

Best regards,
Julián