latexExample.tex

\documentclass[12pt]{article} % increase font size

\usepackage{listings}          % for creating language style
\input{arduinoLanguage.tex}    % adds the arduino language listing

%% Define an Arduino style fore use later %%
\lstdefinestyle{myArduino}{
  language=Arduino,
  %% Add other words needing highlighting below %%
  morekeywords=[1]{},                  % [1] -> dark green
  morekeywords=[2]{FILE_WRITE},        % [2] -> light blue
  morekeywords=[3]{SD, File},          % [3] -> bold orange
  morekeywords=[4]{open, exists},      % [4] -> orange
  %% The lines below add a nifty box around the code %%
  frame=shadowbox,
  rulesepcolor=\color{arduinoBlue},
}

\begin{document}

\section{SD Card Example}
Below is a snippet of arduino code.  It was added  via the input of the external
 file arduinoLanguage.tex.  A custom style was then created at the top of this
 file so that the non-built-in functions and classes like SD and open() would highlight
 properly.  The style also adds the pretty box around the code.  To see how this was
 accomplished, check out latexExample.tex. \\

\begin{lstlisting}[style=myArduino]
#include <SD.h>

File logfile;
byte logPin = 10;

void setup() {
  SD.begin(logPin);

  ///////// Create a new file //////////
  char filename[] = "LOGGER00.CSV";
  for (int i = 0; i < 100; i++) {
    filename[6] = i/10 + '0';    // number the file
    filename[7] = i%10 + '0';    //
    if ( SD.exists(filename)==false ) { // only open a new file if it doesn't exist
      logfile = SD.open(filename, FILE_WRITE);
      break;  // leave the loop!
    }
  }
}

void loop() {
  // put your main code here, to run repeatedly:
  logfile.println("Hello");
  logfile.flush();
  delay(1000);
}
\end{lstlisting}


\end{document}