Choosing pins for external interupt

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User12216
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Level 2
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Hi,
I am trying to get a digital input to trigger an interrupt event on a rising edge. I've tried the EVENT_GENERATOR + EVENT_DETECTOR + DIGITAL_IO approach and also the PIN_INTERRUPT app. I am using Dave 4.3.2 on an XMC4700.

The problem is that I am trying to use GPIO pin 15.13 as my input and this pin does not seem to be available to generate an interrupt. The list of available pins for interrupt purposes seems to be limited to about 30 and this particular pin was not on that list.

So I have two questions:
1. Is there a way to get pin 15.13 to generate an input on a rising edge?
2. If not, is there a subset list of pins suitable for interrupts? I've looked at table 26-12 (Port I/O Functions) hoping to determine this but it wasn't apparent to me.

Thanks in advance,
Paul
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Hello Paul,

the Port I/O Functions table is the correct document to consult. A pin which is capable of being used as an interrupt source needs to be connected to the ERU. Have a look at the "Inputs" section of the table.

Kind regards
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