Using the Arduino Library

The steps objectives are the following:

1. Goes from plain C to library;
2. Use the Arduino C/C++ library to code the feature;
3. Abstracting low-level I/O call through function calls.

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The blinking LED example, levelled up.

Here is a starting code example to make the link blink using the Arduino library:

#include <avr/io.h>
#include <util/delay.h>
#include <Arduino.h>

int led = 13;
boolean led_on;

void setup() {
pinMode(led, OUTPUT);    
led_on=true;  
}

void change_state_led(){  
if (led_on){ digitalWrite(led, LOW); }
else { digitalWrite(led, HIGH);}
led_on = !led_on;
}

int main(void){  
setup();  
while(1)
{
change_state_led();
_delay_ms(1000);          
}
 return 0;
}

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Expected Work

1. Explore the Arduino library reference (https://www.arduino.cc/en/Reference/HomePage)
2. Implement the two parts of the application using the library

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Stepback questions

• Is the readability problem solved?
• What kind of parallelism can still be expressed?
• Who is the public targeted by this “language”?
• Is this language extensible enough to support new features?
• What is the price for the developer?