OpenSDA

[madisonchou]

Hi, I am trying to use the OpenSDA on FRDM-K20D50M to debug our board that has K20DX128VLK7.  So far, I have no luck.  Our board can be connected to and be debugged in CW using PEMicro's Multilink.  So, the JTAG on our board is verified.   I cut the trace on FRDM's J11.  But the FRDM's openSDA LED blinks when connects to our board.   Any suggestion??

[BlackNight]

Hello,

you cannot debug another board with the P&E OpenSDA firmware: you need either CMSIS-DAP, USBDM or Segger.

I have not used the FRDM-K20 for this, but others like the FRDM-KL25Z or FRDM

There are a series of articles which should help you:

• Debug External Processors with USBDM and Freedom Board
• Using the Freedom Board as SWD Programmer
• Freedom Board with Segger OpenSDA Debug Firmware
• CMSIS-DAP with IAR and the KL25Z Freedom Board
• Using the FRDM-KL25Z with CMSIS-DAP

[madisonchou · Accepted solution]

Hi Erich,

Thanks you very much for the information.   Sorry for the late reply.   I was side-tracked to other more urgent stuff.

I am now has a KL25 FRDM board on hand.  Will try it.