/*
 * 
 * barbot led display
 * www.nycresistor.com
 *
 */

#include <WProgram.h>
#include <SoftwareSerial.h>

#define rxPin 2
#define txPin 3
#define ledPin 13

// set up a new serial port
SoftwareSerial mySerial =  SoftwareSerial(rxPin, txPin);
byte pinState = 0;

// prototypes 
int readcom(unsigned char *commandin);
int execom(unsigned char *commandin);

// initiate serial classes
void setup()  {
  // define pin modes for tx, rx, led pins:
  pinMode(rxPin, INPUT);
  pinMode(txPin, OUTPUT);
  pinMode(ledPin, OUTPUT);
  // set the data rate for the SoftwareSerial port
  mySerial.begin(9600);
}

// begin loop
void loop() {
  // listen for new serial coming in:
  unsigned char commandin[8];
  char someChar = mySerial.read();
  // if we detect a command on the bus
  if (someChar == '+') {
    readcom(commandin);
    execom(commandin);
  } 
}

// read command and handle it
int readcom(unsigned char *commandin) {

  char incom;
  char ack = '=';
  // read in the full command
  while(incom != '-') {
    incom = mySerial.read();
    commandin += incom;
  }
  // let the ledpin know we're communicating
  tap(13);
  // let bus know we got the command
  mySerial.print(ack);
  return 0;

}

int execom(unsigned char *commandin) {
  char pinStyle;
  char pinNumin;
  // Parse the command
  if ((commandin[0] = 'L') && (commandin[1] = 'E') && (commandin[2] = 'D')) {
     
     pinNumin = commandin[4];
     pinStyle = commandin[5];
   
  }
  
  // Handle Strobe Call
  if (pinStyle = 'S') {
   
   
  }
  // Handle High Call
  if (pinStyle = 'H') {
    
    
  }
  // Handle Low Call 
  if (pinStyle = 'L') {
    
    
  }

  return 0;
}

void tap(int pinNum) {
  // set the LED pin using the pinState variable:
  digitalWrite(pinNum, pinState); 
  // if pinState = 0, set it to 1, and vice versa:
  pinState = !pinState;
}