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6 years, 2 months ago.
FRDM-K66 locked up when bin loaded
I am using the mbed online compiler with a FRDM-K66 board. I do not see the mbed USB drive when I plug the board in. If I hold down the reset button when I plug it in , then I do get the mbed USB drive. I follow the directions to build the HelloWorld program, but when I download it and reset the board, it locks up. Totally bricked, Get no devices and no indication of power when I plug it in.
What could I be doing wrong? Also, is there any way to recover a board in this state? I have done this now to two boards.
1 Answer
6 years, 2 months ago.
Ted,
When you plug a board in normally then you are programming the target MCU. When you plug in a board with the reset button held down then you are programming the interface MCU, usually to perform a firmware update on DAPLINK.
If you put a application program onto the interface MCU, then yes, it would lock up.
I suggest following the firmware update instructions on the K66 platform page to recover your board.
-Austin