Embedded Programming with Modern C++ Cookbook

How to do it...

We are going to create a simple application that controls a Light Emitting Diode (LED) connected to a general-purpose pin on a Raspberry Pi board:

1. In your ~/test working directory, create a subdirectory called gpio.
2. Use your favorite text editor to create a gpio.cpp file in the gpio subdirectory.
3. Put the following code snippet into the file:

#include <chrono>#include <iostream>#include <thread>#include <wiringPi.h>using namespace std::literals::chrono_literals;const int kLedPin = 0;int main (void){  if (wiringPiSetup () <0) {    throw std::runtime_error("Failed to initialize wiringPi");  }  pinMode (kLedPin, OUTPUT);  while (true) {    digitalWrite (kLedPin, HIGH);    std::cout << "LED on" << std::endl; std::this_thread::sleep_for(500ms) ...