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Using FRDM-KL05 board as external debugger

Question asked by pgo on Jun 15, 2013
Latest reply on Jun 22, 2013 by pgo

Hi All,

 

I've used the other FRDM boards as external debuggers using USBDM but I have found what I believe is an error on the FRDMKL05 board.

 

On the other FRDM boards there is a normally-closed jumper that isolates the SWCLK signal between the on-board chip and the 10-pin SWD connector while leaving the SWCLK connected between the K20 debugger chip and the 10-pin SWD connector.  This allows the connection of an external target for debugging.

The corresponding jumper on the FRDL-KL05 completely isolates the 10-pin connector and I cannot see an purpose for this.

 

Is there something I'm missing?

Is this likely to be changed in future revisions?

 

The jumper in question is J6 on the FRDM-KL05 schematic:

 

http://cache.freescale.com/files/soft_dev_tools/hardware_tools/schematics/FRDM-KL05Z_SCH.pdf?fpsp=1

 

bye

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