LPC55S69-evk "0 available SWD Devices detected"

[jeremygeslin]

Hi,

I followed tutorial to get started with LPCXpresso55S69 Development Board | NXP. Everything was running smoothly until the step where I built my own application based on SDK example. Indeed, after a few Build/Debug loops the board suddently stopped working.

Now, when trying to initiate Debug, the probe is properly being detected:

But SWD link to the cores seams not accessible:

Of course I tried to unplugged the board, restart MCUXpresso, even restart my computer but nothing helped. I also re-flash the on-board probe FW using LPCScript tool, but it didn't helped either.

Is there a way to repair the board ?

Regards,

Jeremy.

[rakesh_ravikuma]

Hi i have same issue can you please help.

1. My micro-controller is LPC55s16 my controller is connected to the target hardware (not the evaluation kit ).

2. I implemented the power modes where i go to deep sleep due some reason its not waking up.

3. because of this my ECU is locked so im not able to flash the code next time.

4. I tried GUI FLASH Tool also its not working same "0 SWD devices connect" its popping.

5. The debugger used is MCU-LINK virtual com port.

please reply if anyone knows the answer how to resolve the issue 

[Alice_Yang · Accepted solution]

Hello Jeremy,

How about erase your chip in ISP mode:

Short J10 of board, then press and release RESET button,  open GUI FLASH Tool,

choose "Mass erase" as below, then click Run..:

After completed, remove the jumper on J10, reconnect board with PC, then try to debug again.

Have a great day,
TIC

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[AJITHKUMAR36]

Hello,

I'm facing an issue where my LPC55s36 controller isn't detecting any SWD devices while running programs in MCUXpresso IDE.

I'm using MCUXpresso IDE v11.9.0 with LPC55s36 development board(https://www.nxp.com/part/LPC5536-EVK#/). I've been able to successfully program the board in the past, but suddenly encountered this issue.

I've tried to  erase the board in ISP mode by shorting JP25 of board and pressing reset and then using GUI FLASH Tool to erase the memory but still the error persist.

Regards,

AJITH KUMAR

[MinhVuongVo]

Thank you very much,
I've had a same problem and your answer's handled it  

[jeremygeslin]

The "mass erase" did the job, board is working again.

Big Thanks !!!