Wake UP TWI from System Off

[NamoAton]

Hello. I am  trying to  use TWI with mpu9250 sensor after System Off mode. But it is not working well. Do I need to do some preparation before going to System off mode? Where the start point after wake up?

[Einar Thorsrud]

Hi,

Can you elaborate on how it is not working well? The nRF is always reset when waking up from system off mode, so seen from the nRF there should not be any difference between a power-on reset and wakeup from system off.

[NamoAton]

There is a strange behavior of MPU9250 sensor too. May be something wrong with timing or somtehing else. Anyway if reset after "cold" start system everything work well. Strange things...