Hi,
recently I experienced a strange behavior on the nRF51 chip, that is at a certain point some gpio lines remained held high, even if the firmware set them to low (both at init and during functioning). Even after a firmware update through DFU service these pins remained held high. Only after I switch off and on the my custom board, these pins restart behave normally.
Someone else had a similar problem? What could be the cause of this behavior? How to solve it?
Thank you.