Arduino pro micro: 'PCIE1' was not declared in this scope

Development Boards Arduino
1

Hi all,

please help.

I try to compile the code

PCICR=1<<PCIE1; //enable interrupt PCINT

PCMSK1=(1<<PCINT9)|(1<<PCINT10);// As А1,A2 signal raise interrupt

and raised the error

C:\Users\serhi\OneDrive\hobbi\Projects\th3\sketch_apr01a\sketch_apr01a.ino: In function ‘void setup()’:
sketch_apr01a:169:10: error: ‘PCIE1’ was not declared in this scope
PCICR=1<<PCIE1; //enable interrupt PCINT
^~~~~
C:\Users\serhi\OneDrive\hobbi\Projects\th3\sketch_apr01a\sketch_apr01a.ino:169:10: note: suggested alternative: ‘ICIE1’
PCICR=1<<PCIE1; //enable interrupt PCINT
^~~~~
ICIE1
sketch_apr01a:170:1: error: ‘PCMSK1’ was not declared in this scope
PCMSK1=(1<<PCINT9)|(1<<PCINT10);// As А1,A2 signal raise interrupt
^~~~~~
C:\Users\serhi\OneDrive\hobbi\Projects\th3\sketch_apr01a\sketch_apr01a.ino:170:1: note: suggested alternative: ‘PCMSK0’
PCMSK1=(1<<PCINT9)|(1<<PCINT10);// As А1,A2 signal raise interrupt
^~~~~~
PCMSK0
sketch_apr01a:170:12: error: ‘PCINT9’ was not declared in this scope
PCMSK1=(1<<PCINT9)|(1<<PCINT10);// As А1,A2 signal raise interrupt
^~~~~~
C:\Users\serhi\OneDrive\hobbi\Projects\th3\sketch_apr01a\sketch_apr01a.ino:170:12: note: suggested alternative: ‘PCINT0’
PCMSK1=(1<<PCINT9)|(1<<PCINT10);// As А1,A2 signal raise interrupt
^~~~~~
PCINT0
sketch_apr01a:170:24: error: ‘PCINT10’ was not declared in this scope
PCMSK1=(1<<PCINT9)|(1<<PCINT10);// As А1,A2 signal raise interrupt
^~~~~~~
C:\Users\serhi\OneDrive\hobbi\Projects\th3\sketch_apr01a\sketch_apr01a.ino:170:24: note: suggested alternative: ‘PCINT0’
PCMSK1=(1<<PCINT9)|(1<<PCINT10);// As А1,A2 signal raise interrupt
^~~~~~~
PCINT0
exit status 1
‘PCIE1’ was not declared in this scope

Arduino IDE 1.8.19, SparkFun AVR boards 1.1.13

It works without any problem for Arduino Nano board.

Thanks!

Serhii

2

UNO and Nano both are based on Atmega328P. Pro Micro is based on atmega32u4. So, register names are different. atmega32u4 has only one Pin Change Interrupt Control Register - PCICR. It has a bit named PCIE0. There is no PCIE1 in it. So, you have to change your code accordingly.

https://ww1.microchip.com/downloads/en/ … asheet.pdf