IRremote library causing "Error compiling for board Arduino Nano"

Projects Programming
1

I'm trying to make an LCD screen count down, beep, and flash my lights through IR at the same time, but when I include the IRremote.h library I get an error. The code works without the library included, but it fails when I put #include <IRremote.h> in. I copied the error message below

Arduino: 1.8.11 (Windows Store 1.8.29.0) (Windows 10), Board: "Arduino Nano, ATmega328P"

Tone.cpp.o (symbol from plugin): In function `timer0_pin_port':

(.text+0x0): multiple definition of `__vector_7'

libraries\IRremote\IRremote.cpp.o (symbol from plugin):(.text+0x0): first defined here

collect2.exe: error: ld returned 1 exit status

exit status 1
Error compiling for board Arduino Nano.

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.

2

You're using another library which uses the same hardware timer as IRremote - they're fighting over vector_7, which is related to timer2. Both IRremote and whatever other library you are trying to use with it both require full control of timer2; they are not compatible.

3

https://forum.arduino.cc/index.php?topic=454873.msg3127065#msg3127065

Note that the file where you need to change the timer is nowadays boarddefs.h.