I have an IR photodiode driving an interrupt on an Arduino UNO. I added TimerOne to get regular output reports, but TimerOne kidnapped my interrupt port. Instead of seeing the IR interrupt, the UNO only sees the timer signal and calls both ISR routines when the timer triggers. How do I use a timer …

TimerOne kidnapped my interrupt port

nickgammon October 27, 2012, 4:24am 5

Variables used inside an ISR need to be declared volatile. Yours aren't.

Topic		Replies	Views
TIMER1 INTERRUPT PROBLEM Programming	5	1380	May 5, 2021
IR and Timer1 library conflict - SOLVED General Guidance	2	593	May 5, 2021
Timer and button interrupts Programming	5	1320	May 5, 2021
using timer interrupt Programming	4	1213	May 5, 2021
Serial Input and Timer Interrupts Troubleshooting	2	1568	May 6, 2021