MCU Recovery

[LArmstrong1985]

Hi,

I've a problem with my board so I am no longer able to program it.

I think the chip is locked. The problem arose after I tried uploading an example for a demo board with a slightly different chip than mine. Specifically, my board has the chip MK22FN1M0xxx12 while the example was for the FRDMK22 board that mounts the chip MK22FN512xxx12. Could this be the problem? I thought there was a protection mechanism in the case.

How can I fix and reset the chip? As a programmer I am using the LPC-LINK v1.3

[nxf56274]

Hi,

If you think your board was locked, use jlink commander is the only way to recover it. If the your LPC link was't be viewed ,you should try other Jlink.I use the LPC-link2. If you want to download the code to different board, you have to modify the linker file. If not, the program won't work. 

Have a great day,
TIC

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[nxf56274]

Hi,

Do you try the jlink commander to unlock the device?

Have a great day,
TIC

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Note:
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- We are following threads for 7 weeks after the last post, later replies are ignored
Please open a new thread and refer to the closed one, if you have a related question at a later point in time.
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[LArmstrong1985]

No,

because the LPC-Link v1.3 inside the LPCxpresso Board is not viewed by

USB on J-Link Commander.

Can I use another Kinetis board with Segger J-link bootloader in this case?

Thank you very much

Fabio

[LArmstrong1985]

I'm having the same problem with another board.

If the problem is that the chip is continuously reset is possible to force it?

Do I have to connect it to GND or to VCC?