MySensorsEthernetGateway.ino

/*
 * Copyright (C) 2013 Henrik Ekblad <henrik.ekblad@gmail.com>
 * 
 * Contribution by a-lurker
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * version 2 as published by the Free Software Foundation.
 * 
 * DESCRIPTION
 * The EthernetGateway sends data received from sensors to the ethernet link. 
 * The gateway also accepts input on ethernet interface, which is then sent out to the radio network.
 *
 * The GW code is designed for Arduino 328p / 16MHz.  ATmega168 does not have enough memory to run this program.
 * 
 *
 * COMPILING WIZNET (W5100) ETHERNET MODULE
 * > Edit RF24_config.h in (libraries\MySensors\utility) to enable softspi (remove // before "#define SOFTSPI").
 *
 * COMPILING ENC28J60 ETHERNET MODULE
 * > Use Arduino IDE 1.5.7 (or later) 
 * > Disable DEBUG in Sensor.h before compiling this sketch. Othervise the sketch will probably not fit in program space when downloading. 
 * > Remove Ethernet.h include below and include UIPEthernet.h 
 * > Remove DigitalIO include 
 * Note that I had to disable UDP and DHCP support in uipethernet-conf.h to reduce space. (which means you have to choose a static IP for that module)
 *
 * VERA CONFIGURATION:
 * Enter "ip-number:port" in the ip-field of the Arduino GW device. This will temporarily override any serial configuration for the Vera plugin. 
 * E.g. If you want to use the defualt values in this sketch enter: 192.168.178.66:5003
 *
 * LED purposes:
 * - RX (green) - blink fast on radio message recieved. In inclusion mode will blink fast only on presentation recieved
 * - TX (yellow) - blink fast on radio message transmitted. In inclusion mode will blink slowly
 * - ERR (red) - fast blink on error during transmission error or recieve crc error  
 * 
 * See http://www.mysensors.org/build/ethernet_gateway for wiring instructions.
 *
 */

#include <DigitalIO.h>     // This include can be removed when using UIPEthernet module  
#include <SPI.h>  
#include <MySensor.h>
#include <MyGateway.h>  
#include <stdarg.h>

// Use this if you have attached a Ethernet ENC28J60 shields  
//#include <UIPEthernet.h>  

// Use this fo WizNET W5100 module and Arduino Ethernet Shield 
#include <Ethernet.h>   


#define INCLUSION_MODE_TIME 1 // Number of minutes inclusion mode is enabled
#define INCLUSION_MODE_PIN  3 // Digital pin used for inclusion mode button

#define RADIO_CE_PIN        5  // radio chip enable
#define RADIO_SPI_SS_PIN    6  // radio SPI serial select
#define RADIO_ERROR_LED_PIN 7  // Error led pin
#define RADIO_RX_LED_PIN    8  // Receive led pin
#define RADIO_TX_LED_PIN    9  // the PCB, on board LED

#define IP_PORT 5003        // The port you want to open 
IPAddress myIp (10, 38, 92, 40);  // Configure your static ip-address here    COMPILE ERROR HERE? Use Arduino IDE 1.5.7 or later!

// The MAC address can be anything you want but should be unique on your network.
// Newer boards have a MAC address printed on the underside of the PCB, which you can (optionally) use.
// Note that most of the Ardunio examples use  "DEAD BEEF FEED" for the MAC address.
byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };  // DEAD BEEF FEED

// a R/W server on the port
EthernetServer server = EthernetServer(IP_PORT);

// No blink or button functionality. Use the vanilla constructor.
MyGateway gw(RADIO_CE_PIN, RADIO_SPI_SS_PIN, INCLUSION_MODE_TIME);

// Uncomment this constructor if you have leds and include button attached to your gateway 
//MyGateway gw(RADIO_CE_PIN, RADIO_SPI_SS_PIN, INCLUSION_MODE_TIME, INCLUSION_MODE_PIN, RADIO_RX_LED_PIN, RADIO_TX_LED_PIN, RADIO_ERROR_LED_PIN);


char inputString[MAX_RECEIVE_LENGTH] = "";    // A string to hold incoming commands from serial/ethernet interface
int inputPos = 0;

void setup()  
{ 
  Ethernet.begin(mac, myIp);

  // give the Ethernet interface a second to initialize
  delay(1000);

  // Initialize gateway at maximum PA level, channel 70 and callback for write operations 
  gw.begin(RF24_PA_LEVEL_GW, RF24_CHANNEL, RF24_DATARATE, writeEthernet);

  // start listening for clients
  server.begin();
}

// This will be called when data should be written to ethernet 
void writeEthernet(char *writeBuffer) {
  server.write(writeBuffer);
}


void loop()
{
  // if an incoming client connects, there will be
  // bytes available to read via the client object
  EthernetClient client = server.available();

  if (client) {
      // if got 1 or more bytes
      if (client.available()) {
         // read the bytes incoming from the client
         char inChar = client.read();

         if (inputPos<MAX_RECEIVE_LENGTH-1) { 
           // if newline then command is complete
           if (inChar == '\n') {  
              // a command was issued by the client
              // we will now try to send it to the actuator
              inputString[inputPos] = 0;

              // echo the string to the serial port
              Serial.print(inputString);

              gw.parseAndSend(inputString);

              // clear the string:
              inputPos = 0;
           } else {  
             // add it to the inputString:
             inputString[inputPos] = inChar;
             inputPos++;
           }
        } else {
           // Incoming message too long. Throw away 
           inputPos = 0;
        }
      }
   }  
   gw.processRadioMessage();    
}