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Need help to initialize External Watchdog Monitor(EWM) with software interrupt.

Question asked by SUJAI GOWDA on Jun 20, 2015
Latest reply on Jun 29, 2015 by Jorge_Gonzalez

We are using EWM(external watchdog monitor) module on MK50DX256CLL10 controller for powerfail application.I have given 100ms pulses as input to the EWM_in pin from external circuit. I need an interrupt if we misses the pulse in 100ms time. I cannot use EWM_out pin because we are already using it for other applications, Is there anyway to get interrupt without using EWM_out. External circuit will not generate a pulse if powerfail occurs. I need interrupt when EWM_in misses the pulse(powerfail)  It should be software interrupt without using EWM_out pin.

 

we need clarification weather we can generate interrupt in software without using EWM_out pin. Appreciate your help in understanding EWM. Is there any initialization or sample code for this?

 

Thanks

SUJAI

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