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MSP432P401R: interrupt and counter

ABHAY VASHISTHA
Intellectual 695 points

Part Number: MSP432P401R

Hello all,

I am looking for Code which can count the pulses with different pulse width ranging from 1 microseconds to 20 micro seconds, Which example program will be good to start?

  • +1
    TI__Guru 56685 points

    Hello Abhay,

    Please checkout the MSP432P2 SimpleLink SDK. In particular, the Timer examples should help. If you just need to count the pulses, then just have the Timer Clock driven by your source to increment the Timer. Then you can just setup an interrupt for when you reach a certain count you are looking for. 

    If you need to distinguish between different pulse widths, then that's a little trickier. You could possibly use a GPIO interrupt to start a timer on a rising edge, then, grab the count via interrupt on a falling edge. You may need to watch your interrupt latency though for such small windows. Hope this helps!