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ADuCM360 bootloop when input pin is set

I've develop a new board with ADuCM360 as main chip.

I'm able to run code on it, everything seems working well, but when i inizialize the GPIO P0.4 as input, the microcontroller stop to work.

DioOen(pADI_GP0, GP0OEN_OEN4_IN);

This happen also with the EVAL-ADICUP360

Any tips for this issue?

   

Thanks in advance