S32K388 Debug port failed issue with Lauterbach

[Aznebm]

Hello,

I'm requesting help for an issue I have on an EVB 32k388. I was evaluating the example code for Wdg_fs26. I succeedeed to read the FS26 registers and been able to refresh successfully the FS26 Wdg. Then I tried to put the FS26 in Standby mode by calling the function Sbc_fs26_SetOperatingMode(SBC_FS26_OPMODE_STANDBY). Since then, when I try to flash a SW, I have an error in the Lauterbach "Debug Port Fail".

Can you help me investigate and resolve this issue?

Best regards

[Aznebm]

Hello,

Thank you for your answer. I've measured the VCORE and it was OFF when I go to Standby. Further testing, I saw that the issue with the debug port was due to the HSE CLK failed error that was causing a reset on the board approximately 10sec. I was able to correct this by updating the DCF records for HSE clock config.

Thank you again for your help.

The issue is resolved.

[guoweisun · Accepted solution]

HI 

Do you mean you successfully enter into standby mode of SBC?

If so you can see VCORE is OFF of SBC ,can you check whether this mode supply power correctly on your request in MCU side? or VCORE is off ,can your MCU work well?

Before enter into standby mode we suggest to configure the wake up source: