FastPins.h

• Arduino Uno R3 328P
• Arduino Leonardo 32U4
• Arduino Mega 2560

What is FastPins?
Arduino super fast pin I/O

With this header file, you can:
	- Set pin to HIGH or LOW in one instruction that typically takes 2 clock cycles
	- Set pin mode in 1-2 instructions, 2-4 clock cycles
		1 cycle to set OUTPUT
		2 cycles to set INPUT
		2 cycles to set PULLUP


How do I use the header file?
Add the following code to the top of your main sketch file, substituting your flavor of board in for __FASTPINS_UNO__


#ifndef __FASTPINS_UNO__
#define __FASTPINS_UNO__
#endif

#include <FastPins.h>



Which boards are supported?
Here are the supported Arduino board #defines:


__FASTPINS_UNO__
__FASTPINS_LEONARDO__
__FASTPINS_MEGA2560__



What can I actually do on each pin?
Here's what's included for each pin:


PIN13_MODE_IN; // set pin 13 to INPUT (Arduino default mode). Just like the official code, this sets the pin to LOW
PIN13_MODE_OUT; // set pin 13 to OUTPUT. Doesn't affect current pin value (i.e. HIGH or LOW)
PIN13_MODE_PULLUP; // set pin 13 to INPUT_PULLUP. Just like the official code, this sets the pin to HIGH
PIN13_HIGH; // set pin 13 to HIGH
PIN13_LOW; // set pin 13 to LOW



How do I use the header file?
Here are the pins covered on the supported Arduinos:

	- All labeled pins on the board that can be changed, specifically:
		- Digital pins
		- Analog pins
		- SDA, SCL
		- SCK, MISO, and MOSI
		- Anything else is board specific!
			If you want to use a board specific pin, you probably know what you're doing.
			It should be defined for your board in the header.

More Information
Arduino Pinouts and other super useful diagrams by PighiXXX.