SPI Slave CS resets nrf52?

[Bernd (nvisionary)]

I am using the spi slave example code from SDK 0.9.2 and connect the board to an Atmel SAM4S who is the SPI master. I can see that every time the CS signal is released from the Atmel the nrf52 seems to reset. What could be the reason for that behavior? I'm connecting the SPI as follows:

SPI CS: P0-12

SPI SCL: P0-29

SPI MOSI: P0-25

SPI MISO: P0-28

[RK]

it seems to reset or it does reset? Do you have an error handler which resets the board, are you ending up in the error handler because of an APP_ERROR_CHECK somewhere?

[Bernd (nvisionary)]

No it does reset. I have a printf in the top of the main function. The APP_ERROR_CHECK was a good hint. I didn't think about that. Without the DEBUG define it will actually reset the chip every time. It works correctly now. Thanks!