Where can I find the code for Arduino's "attachInterrupt"?

Question

Where can I find the code for Arduino's attachInterrupt function?

A search on the Arduino's Github repo yielded nothing.

I suspect it might be a wrapper for some avr-libc function but nothing in the avr-libc docs stands out to me...

download a text editor like Notepad++ ..... you can then use it to search for text in folders (directories) ..... search for the text "attachInterrupt" in the arduino install directory .... it will find all files that contain that word ..... get it here notepad-plus-plus.org — jsotola, Jun 9, 2018 at 6:20

Delta_G · Accepted Answer · 2018-06-09 00:15:36Z

4

It's in the core in WInterrupts.c

On my install it's at:

arduino-1.8.5/hardware/arduino/avr/cores/arduino/WInterrupts.c

answered Jun 9, 2018 at 0:15

Delta_G

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Thank you! Never knew I could find these files in the install!
– Jet Blue
Jun 9, 2018 at 0:29
1

How could you compile them if they weren't there?
– Delta_G
Jun 9, 2018 at 0:31
Online: github.com/arduino/ArduinoCore-avr/blob/master/cores/arduino/…
– Jot
Jun 9, 2018 at 17:06

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