I'm working on a custom board design where there will be no SW2 to provide a wakeup interrupt. I would like to use an external signal from a rotational pulse sensor (used for calculating RPM) to provide a wakeup signal. Can I just tie this signal into the current pin used for SW2 and still be able to calculate RPM or do I need to chain 2 IRQ blocks together? Will there be any problems with a constant triggering of the wakeup IRQ because this is also a RPM signal?
This is my 1st PSoC 4 BLE project so any other helpful hints would be welcome.
It is fine to connect the Pulse signal to the same pin.But you have to make sure that you are clearing the interrupt.