Ole Reinhardt wrote: > - outr(AIC_SMR(TWI_ID), AIC_SRCTYPE_INT_EDGE_TRIGGERED | > NUT_IRQPRI_TWI); > + outr(AIC_SMR(TWI_ID), AIC_SRCTYPE_INT_LEVEL_SENSITIVE | > NUT_IRQPRI_TWI); Tried this, without success. :-( I'm working on this. Harald