A Tarduino example done properly

The Arduino programming language is a superset of C++.

C++ is a superset of C.

For some strange reason, the people who developed Arduino decided to eliminate a lot of the constraints of C & C++ that make the code maintainable.

Luckily, you can program in C or C++ using proper techniques & compilers for Arduino will not choke on your code.

main.cpp

 1 #include <Arduino.h>  // Pretty much only here to giv us Serial Communications & delay()
 2 
 3 #include "FooBar.h"   // This header file lives in the src directory
 4 
 5 void setup() {
 6   // put your setup code here, to run once:
 7   Serial.begin(115200);
 8   Serial.println("Howdee!");
 9   delay(5000);   // What a silly way to rape a microcontroller...
10 }
11 
12 void loop() {
13   // put your main code here, to run repeatedly:
14   Function1();
15   delay(1000);   // UGH...
16   Function2();
17   delay(1000);   // UGH...
18 }

FooBar.h

1 void Function1();
2 
3 void Function2();

Function1.cpp

1 #include <Arduino.h>
2 
3 void Function1()
4 {
5     Serial.println("Hi Grant!");
6 }

Function2.cpp

1 #include <Arduino.h>
2 
3 void Function2()
4 {
5     Serial.println("I'm a microcontroller...");
6 }

platformio.ini

(Coz I have this preference in IDEs...)

[env:esp07]
platform = espressif8266
board = esp07
framework = arduino