I know using #define is frowned on but I thought this might be interesting to new users.
Here is how you can define a macro, in this case TOGGLEd0 thru d19, and use it in an Arduino sketch.
// macroUNO.h
// This file goes into the “C:\Users\YOURUSER\Documents\Arduino\libraries\macroUNO” folder.
//
// These Macros can be used with Arduino UNO board
//
// NOTE:
// ***** Macros may have to be redefined for other types of Arduino boards *****
//
// Macro Format:
// #define XXXXX YYYYY
// where XXXXX = the macro name you what to define (might want to use capitals)
// where YYYYY = the code that will be substituted prior to compiling
// #define TOGGLEd2 PORTD ^= B00000100
// TOGGLEd2 = the macro name
// PORTD ^= B00000100 = the microcontroller code
//
// Toggle port pins 0-7
// Port D
//#define TOGGLEd0 PORTD^= B00000001 // Toggle digital pin D0 Shared with USB RX
//#define TOGGLEd1 PORTD^= B00000010 // Toggle digital pin D1 Shared with USB TX
#define TOGGLEd2 PORTD ^= B00000100 // Toggle digital pin D2
#define TOGGLEd3 PORTD ^= B00001000 // Toggle digital pin D3
#define TOGGLEd4 PORTD ^= B00010000 // Toggle digital pin D4
#define TOGGLEd5 PORTD ^= B00100000 // Toggle digital pin D5
#define TOGGLEd6 PORTD ^= B01000000 // Toggle digital pin D6
#define TOGGLEd7 PORTD ^= B10000000 // Toggle digital pin D7
// Toggle port pins 0-5
// Port B
#define TOGGLEd8 PORTB ^= B00000001 // Toggle digital pin D8
#define TOGGLEd9 PORTB ^= B00000010 // Toggle digital pin D9
#define TOGGLEd10 PORTB ^= B00000100 // Toggle digital pin D10
#define TOGGLEd11 PORTB ^= B00001000 // Toggle digital pin D11
#define TOGGLEd12 PORTB ^= B00010000 // Toggle digital pin D12
#define TOGGLEd13 PORTB ^= B00100000 // Toggle digital pin D13
// Toggle port pins 0-5
// Port C
#define TOGGLEd14 PORTC ^= B00000001 // Toggle digital pin D14 A0
#define TOGGLEd15 PORTC ^= B00000010 // Toggle digital pin D15 A1
#define TOGGLEd16 PORTC ^= B00000100 // Toggle digital pin D16 A2
#define TOGGLEd17 PORTC ^= B00001000 // Toggle digital pin D17 A3
#define TOGGLEd18 PORTC ^= B00010000 // Toggle digital pin D18 A4
#define TOGGLEd19 PORTC ^= B00100000 // Toggle digital pin D19 A5
//
This is a typical sketch:
#include <macroUNO.h>
/*
TogglePin
Toggles the condition of an O/P pin.
This example code is in the public domain.
*/
// Pin 13 has a LED connected on most Arduino boards.
// give it a name:
int led = 13;
// the setup routine runs once when you press reset:
void setup()
{
// initialize the digital pin as an output.
pinMode(led, OUTPUT);
}
//****************** END of setup() *******************
// the loop routine runs over and over again forever:
void loop()
{
TOGGLEd13; // This toggles pin D13. TOGGLEd2 through d19 are implemented
// TOGGLEd0 and TOGGLEd1 are not defined
delay(2000); // Wait a bit
}
//****************** END of loop() *******************
