43+ Arduino Mega 2560 Interrupt Pins Pics. Arduino interrupt tutorial with example demonstration of how to use external interrupt and pin change interrupt in arduino. The first parameter to attachinterrupt() is an interrupt number.

Measure Pwm Frequency By Triggering An Isr On Arduino Hardware Matlab Simulink Example from www.mathworks.com

Pin:the pin number(arduino due only). For example, the arduino boards, from uno to duemilanove, have only two interrupts which are located on digital pins 2 and 3. This function must take no parameters and return nothing.

As i have the arduino mega 2560 it comes with 4 serial inputs/outputs, and they have their own serialeventx function (where x = {'',1,2,3}).

The number of external interrupts possessed by microcontrollers differs from one microcontroller to the other. Interrupts and rcarduino these differences between the arduino platforms will have been responsible for some of the difficulty that users have had in porting rcarduino code to minis, micros. In arduino uno, nano the pins used for interrupt are 2,3 & in mega 2,3,18,19,20,21. In atmega328 based arduino uno board or atmega168 based board, all the i/o pins can be used as the interrupt pins.