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: