EXTINT3 and other EXTINTs in LPC1769

Discussion created by lpcware Employee on Jun 15, 2016
Latest reply on Jun 15, 2016 by lpcware
Content originally posted in LPCWare by federoasio on Tue Oct 23 08:29:47 MST 2012
Hi, I'm trying to use all the external interrupts in a project in order to detect the "end of conversion" signals from some sensors I'm using.
I was trying to use EXTINT3 and I have some problems. If I only use EXTINT3 then everything works fine, but if I also use another external interrupt, e.g. EXTINT2, then I receive interrupts from EXTINT2 in the EXTINT3 handler. I know all GPIO interrupts are connected to EXTINT3, and I guess this has something to do with this problem, but I don't know how to avoid it.

I can't avoid using EXTINT3, any ideas to solve it?

Thanks in advance.