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/*
RESTduino
A REST-style interface to the Arduino via the
Wiznet Ethernet shield.
Based on David A. Mellis's "Web Server" ethernet
shield example sketch.
Circuit:
* Ethernet shield attached to pins 10, 11, 12, 13
created 04/12/2011
by Jason J. Gullickson
added 10/16/2011
by Edward M. Goldberg - Optional Debug flag
*/
#define DEBUG true
#define STATICIP true
#include <SPI.h>
#include <Ethernet.h>
#include <EthernetBonjour.h>
//Remote control stuff
#include <IRremote.h>
IRsend irsend;
// Enter a MAC address and IP address for your controller below.
// The IP address will be dependent on your local network:
byte mac[] = {0x90, 0xA2, 0xDA, 0x0D, 0x12, 0xC0};
#if STATICIP
byte ip[] = {10,0,1,99};
#endif
// Initialize the Ethernet server library
// with the IP address and port you want to use
// (port 80 is default for HTTP):
#if defined(ARDUINO) && ARDUINO >= 100
EthernetServer server(80);
#else
Server server(80);
#endif
void setup()
{
#if DEBUG
// turn on serial (for debuggin)
Serial.begin(9600);
#endif
// start the Ethernet connection and the server:
#if STATICIP
Ethernet.begin(mac, ip);
#else
if (Ethernet.begin(mac) == 0) {
#if DEBUG
Serial.println("Unable to set server IP address using DHCP");
#endif
for(;;)
;
}
#if DEBUG
// report the dhcp IP address:
Serial.println(Ethernet.localIP());
#endif
#endif
server.begin();
EthernetBonjour.begin("restduino");
}
// url buffer size
#define BUFSIZE 255
// Toggle case sensitivity
#define CASESENSE true
void loop()
{
// needed to continue Bonjour/Zeroconf name registration
EthernetBonjour.run();
char clientline[BUFSIZE];
int index = 0;
// listen for incoming clients
#if defined(ARDUINO) && ARDUINO >= 100
EthernetClient client = server.available();
#else
Client client = server.available();
#endif
if (client) {
// reset input buffer
index = 0;
while (client.connected()) {
if (client.available()) {
char c = client.read();
// fill url the buffer
if(c != '\n' && c != '\r' && index < BUFSIZE){ // Reads until either an eol character is reached or the buffer is full
clientline[index++] = c;
continue;
}
#if DEBUG
Serial.print("client available bytes before flush: "); Serial.println(client.available());
Serial.print("request = "); Serial.println(clientline);
#endif
// Flush any remaining bytes from the client buffer
client.flush();
#if DEBUG
// Should be 0
Serial.print("client available bytes after flush: "); Serial.println(client.available());
#endif
// convert clientline into a proper
// string for further processing
String urlString = String(clientline);
// extract the operation
String op = urlString.substring(0,urlString.indexOf(' '));
// we're only interested in the first part...
urlString = urlString.substring(urlString.indexOf('/'), urlString.indexOf(' ', urlString.indexOf('/')));
// put what's left of the URL back in client line
#if CASESENSE
urlString.toUpperCase();
#endif
urlString.toCharArray(clientline, BUFSIZE);
// get the first two parameters
char *pin = strtok(clientline,"/");
char *value = strtok(NULL,"/");
// this is where we actually *do something*!
char outValue[10] = "MU";
String jsonOut = String();
if(pin != NULL){
if(value != NULL){
#if DEBUG
// set the pin value
Serial.println("setting pin");
#endif
irsend.sendNEC(strtoul( value, NULL, 10 ), 32);
delay(50);
irsend.sendNEC(strtoul( value, NULL, 10 ), 32); //send a few times because it can go unnoticed.
delay(50);
irsend.sendNEC(strtoul( value, NULL, 10 ), 32);
// select the pin
int selectedPin = atoi(pin);
/*
#if DEBUG
Serial.println(selectedPin);
#endif
// set the pin for output
pinMode(selectedPin, OUTPUT);
// determine digital or analog (PWM)
if(strncmp(value, "HIGH", 4) == 0 || strncmp(value, "LOW", 3) == 0){
#if DEBUG
// digital
Serial.println("digital");
#endif
if(strncmp(value, "HIGH", 4) == 0){
#if DEBUG
Serial.println("HIGH");
#endif
digitalWrite(selectedPin, HIGH);
}
if(strncmp(value, "LOW", 3) == 0){
#if DEBUG
Serial.println("LOW");
#endif
digitalWrite(selectedPin, LOW);
}
}
else {
#if DEBUG
// analog
Serial.println("analog");
#endif
// get numeric value
int selectedValue = atoi(value);
#if DEBUG
Serial.println(selectedValue);
#endif
analogWrite(selectedPin, selectedValue);
}
*/
// return status
client.println("HTTP/1.1 200 OK");
client.println("Content-Type: text/html");
client.println();
}
else {
#if DEBUG
// read the pin value
Serial.println("reading pin");
#endif
// determine analog or digital
if(pin[0] == 'a' || pin[0] == 'A'){
// analog
int selectedPin = pin[1] - '0';
#if DEBUG
Serial.println(selectedPin);
Serial.println("analog");
#endif
sprintf(outValue,"%d",analogRead(selectedPin));
#if DEBUG
Serial.println(outValue);
#endif
}
else if(pin[0] != NULL) {
// digital
int selectedPin = pin[0] - '0';
#if DEBUG
Serial.println(selectedPin);
Serial.println("digital");
#endif
pinMode(selectedPin, INPUT);
int inValue = digitalRead(selectedPin);
if(inValue == 0){
sprintf(outValue,"%s","LOW");
//sprintf(outValue,"%d",digitalRead(selectedPin));
}
if(inValue == 1){
sprintf(outValue,"%s","HIGH");
}
#if DEBUG
Serial.println(outValue);
#endif
}
// assemble the json output
jsonOut += "{\"";
jsonOut += pin;
jsonOut += "\":\"";
jsonOut += outValue;
jsonOut += "\"}";
// return value with wildcarded Cross-origin policy
client.println("HTTP/1.1 200 OK");
client.println("Content-Type: text/html");
client.println("Access-Control-Allow-Origin: *");
client.println();
client.println(jsonOut);
}
}
else {
// error
#if DEBUG
Serial.println("erroring");
#endif
client.println("HTTP/1.1 404 Not Found");
client.println("Content-Type: text/html");
client.println();
}
break;
}
}
// give the web browser time to receive the data
delay(1);
// close the connection:
//client.stop();
client.stop();
while(client.status() != 0){
delay(5);
}
}
}
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