The MSP432™ uses a additional level for interrupts: the Nested Vectored Interrupt Controller (NVIC). Every interrupt you request must be enabled in the NVIC. To enable for example the Timer_A0_N interrupt you have to call also the NVIC function: NVIC_EnableIRQ(TA0_N_IRQn); You can see a list of all interrupts in the msp432p401r.h file, there is a enum type IRQn_Type. … MSP432™ Interrupt system weiterlesen