I have a FRDM-KL25Z which was working flawlessly until recently. Now, there's an issue: the bootloader microcontroller (K20) apparently is not communicating with the KL25Z.
When I install the mbed firmware, any program I try to upload to it results in "SWD ERROR" on the fail.txt file.
I tried the solution propose on another topic, which was pressing the reset button before copying the file, but it didn't work. Seems to be a hardware problem, but I have no means to confirm that.
The KL25Z is still running the last code I programmed, so the microcontroller is working. There seems to be a problem with the communication.
I have already tested continuity on the SWD lines and it's all ok.
Any help is appreciated