2 Replies Latest reply on Sep 15, 2015 11:05 AM by MichaelF_56

    interrupt pin on the bcm20737s

      Hello,

       

      I have 2 interrupt lines i must tie to the bcm20737s module. I am wondering are there any recommended i/o to connect to or ones to stay away from?

       

      Thanks,

      Luke.

        • 1. Re: interrupt pin on the bcm20737s
          JacobT_81

          If you have pins 3 and 4 available, they're always reliable for me. Any GPIO can be used as an interrupt, but there are many possible contentions to look out for if you plan on using any of the other hardware blocks.

           

          For example, spiffy 1 uses p32 and p33. Spiffy 2 and PUART are configurable, so, if you plan to use them plan out which pins will be used for what. (there is also some interdependence between spiffy 2 and puart, but don't be concerned with this if you don't plan to use either one )

           

          The final thing to allot pins for is an external clock if one is used: this will use up p11/12.

           

          Jacob

          • 2. Re: interrupt pin on the bcm20737s
            MichaelF_56

            Thanks JacobT_81

             

            Note that the BCM2073XS GPIO Basics is a good place to start when engaging in planning around the limitations of our GPIO.