/*

AUTHOR: Jon Edison
DATE: Nov 6 2015
LICENSE: Public domain (use at your own risk)
CONTACT: jon at nymrsc org uk

*/

#include <SoftwareSerial.h>
    const int rxpin = 2;
    const int txpin = 3;
    SoftwareSerial serial_timer(rxpin,txpin);
    const int  buttonPin = 4;    // the pin that the pushbutton is attached to

   // Variables:
    int buttonPushCounter = 0;   // counter for the number of button presses
    int buttonState = 0;         // current state of the button
    int lastButtonState = 0;     // previous state of the button
    char incomingByte = 0;       // Input from Timer
    char inByte = 0;             // Input from USB

void setup() {
    // initialize the button pin as a input:
    pinMode(buttonPin, INPUT);
    // initialize serial communication:
    Serial.begin(2400);
    serial_timer.begin(2400);
    }

void loop() {
    // read the pushbutton input pin:
    buttonState = digitalRead(buttonPin);
    // compare the buttonState to its previous state
    if (buttonState != lastButtonState) {
    // if the state has changed
    if (buttonState == LOW) {
    // if current state is LOW then button
    // went from on to off:
    // increment the counter
    // buttonPushCounter++;
      Serial.println();
      Serial.println("S\n"); // S for for "Start" when Button pressed
    } 
    } 
    // Update Button Status
    lastButtonState = buttonState;
    // send data only when you receive data:
    if (Serial.available() > 0) {
    inByte = Serial.read(); // char
    serial_timer.println(inByte);
    }
    if (inByte == 86 ) {  // Display Version No if "V" is sent
    Serial.println("sketch_nov6e 16/11/2015");
    // Make sure the Serial Monitor sends at least a New Line
    // otherwise this will print forever!!
    }
   // Delay a little bit to avoid bouncing
   delay(50);
    
   if (serial_timer.available() > 0) {
   // read the incoming byte from Timer:
   char incomingByte = serial_timer.read();
   // say what you got on USB:
   Serial.write(incomingByte);
   }
   }