This simple project aims to increase the speed of common functions used when programming with arduino such as digitalWrite,digitalRead and pinMode.
Speeduino can be installed like any other Arduino libary, just download this GitHub project and add the Speeduino folder to your /libraries/ directory inside your Arduino sketches folder. Once added, simply add #include <Speeduino.h> in the beggining of your code and you're ready to go!
Once installed, Speeduino will add new functions with the same effect as the ones from Arduino, only faster. Below are the original Arduino functions and their Speeduino counterpart:
| Arduino Function | Speeduino Function |
|---|---|
digitalWrite(pin, HIGH) |
digitalHigh(pin) |
digitalWrite(pin, LOW) |
digitalLow(pin) |
digitalRead(pin) |
digitalState(pin) |
pinMode(pin, INPUT) |
inputPin(pin) |
pinMode(pin, OUTPUT) |
outputPin(pin) |
pinMode(pin, INPUT_PULLUP) |
inputPullUpPin(pin) |
digitalRead(pin) == HIGH |
isHigh(pin) |
digitalRead(pin) == LOW |
isLow(pin) |
Below is a comparaison of the speed of diferent operations done using Arduino vs. Speeduino:
| Function | Arduino Speed | Speeduino Speed |
|---|---|---|
digitalWrite(13, HIGH) |
4 - 8 μs | 0* - 4 μs |
pinMode(13, OUTPUT) |
8 μs | 4 μs |
digitalRead(13) |
4 - 8 μs | 0* - 4 μs |
| *Since Arduino can't measure nanoseconds, the microseconds measurement will appear to be 0, meaning that the function took less than a microsecond to execute |