Hi guys.
I made an arduino with a webserver that hosts buttons with an on and off switch. Each button corresponds with signal that gets outputted to my nexa radio receiver. So when I press "Button 1 on" on my Web Server, it tells the arduino to transmit a radio signal to my Nexa Unit which then tells it to turn on.
The problem I am having is that my program only seems to work once, then it stops. Like I can press every button once in the webserver but I cannot press it again until I restart the device. Sometimes after restarting it will still not work, unless I open a private tab in my browser, but then after a while that will also stop working.
I got everything in a loop, and the loop seems to be working so I am not sure why my radio signals only get sent once, then stops.
I am wondering if you guys could have a look at my code and see if you see anything obvious. I'm the farthest you can be from an expert, and my code is based on many examples.
I am using the Ethernet Library, and the NewRemoteSwitch library from: fuzzillogic / 433mhzforarduino / wiki / Home — Bitbucket (Located inside the NewRemoteSwitch folder)
#include <SPI.h>
#include <Ethernet.h>
#include <NewRemoteTransmitter.h>
const unsigned long TRANSMITTER_ADDRESS = 27612394; //My personal transmitter address
const int PIN_TRANSMITTER = 8;
// Create a transmitter on address TRANSMITTER_ADDRESS, using digital pin PIN_TRANSMITTER to transmit,
// with a period duration of 260ms (default), repeating the transmitted
// code 2^3=8 times.
NewRemoteTransmitter transmitter(TRANSMITTER_ADDRESS, PIN_TRANSMITTER, 260, 3);
// Ethernet configuration
uint8_t mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED }; // MAC Address
uint8_t ip[] = { 192,168,1,230 }; // IP Address
EthernetServer server(80); // Server Port 80
// RemoteTransmitter configuration
// Connect Transmitter to Pin 11 and receiver to pin 2 (all digital)
// FAN 1 ON/OFF:
// Addr 27612394 unit 0 on, period: 267us.
// Addr 27612394 unit 0 off, period: 267us.
// FAN 2 ON/OFF:
// Addr 27612394 unit 1 on, period: 266us.
// Addr 27612394 unit 2 off, period: 267us.
// FAN 3 ON/OFF:
// Addr 27612394 unit 2 on, period: 267us.
// Addr 27612394 unit 1 off, period: 266us.
// ALL POWER OFF:
// Addr 27612394 group off, period: 267us.
void setup() {
Ethernet.begin(mac, ip);
server.begin();
pinMode(PIN_TRANSMITTER, OUTPUT);
Serial.begin(9600);
}
void loop() {
char* command = httpServer();
}
void processCommand(char* command) {
if (strcmp(command, "1-on") == 0) {
transmitter.sendGroup(true); //All fans on
} else if (strcmp(command, "1-off") == 0) {
transmitter.sendGroup(false); //All fans off
} else if (strcmp(command, "2-on") == 0) {
transmitter.sendUnit(0, true);
} else if (strcmp(command, "2-off") == 0) {
transmitter.sendUnit(0, false);
} else if (strcmp(command, "3-on") == 0) {
transmitter.sendUnit(1, true);
} else if (strcmp(command, "3-off") == 0) {
transmitter.sendUnit(1, false);
}
}
/**
* HTTP Response with homepage
*/
void httpResponseHome(EthernetClient c) {
c.println("HTTP/1.1 200 OK");
c.println("Content-Type: text/html");
c.println();
c.println("<html>");
c.println("<head>");
c.println( "<title>MPC NEXA Webserver</title>");
c.println( "<style>");
c.println( "body { font-family: Arial, sans-serif; font-size:12px; }");
c.println( "</style>");
c.println("</head>");
c.println("<body>");
c.println( "<h1>MPC NEXA Webserver</h1>");
c.println( "<ul>");
c.println( "<li><a href=\"./?1-on\">Turn on all fans</a></li>");
c.println( "<li><a href=\"./?1-off\">Turn off all fans</a></li>");
c.println( "</ul>");
c.println( "<ul>");
c.println( "<li><a href=\"./?2-on\">Turn on fan 1</a></li>");
c.println( "<li><a href=\"./?2-off\">turn off fan 1</a></li>");
c.println( "</ul>");
c.println( "<ul>");
c.println( "<li><a href=\"./?3-on\">Turn on fan 2</a></li>");
c.println( "<li><a href=\"./?3-off\">turn off fan 2</a></li>");
c.println( "</ul>");
c.println( "<hr>");
c.println("</body>");
c.println("</html>");
}
/**
* HTTP Redirect to homepage
*/
void httpResponseRedirect(EthernetClient c) {
c.println("HTTP/1.1 301 Found");
c.println("Location: /");
c.println();
}
/**
* HTTP Response 414 error
* Command must not be longer than 30 characters
**/
void httpResponse414(EthernetClient c) {
c.println("HTTP/1.1 414 Request URI too long");
c.println("Content-Type: text/plain");
c.println();
c.println("414 Request URI too long");
}
/**
* Process HTTP requests, parse first request header line and
* call processCommand with GET query string (everything after
* the ? question mark in the URL).
*/
char* httpServer() {
EthernetClient client = server.available();
if (client) {
char sReturnCommand[32];
int nCommandPos=-1;
sReturnCommand[0] = '\0';
while (client.connected()) {
if (client.available()) {
char c = client.read();
if ((c == '\n') || (c == ' ' && nCommandPos>-1)) {
sReturnCommand[nCommandPos] = '\0';
if (strcmp(sReturnCommand, "\0") == 0) {
httpResponseHome(client);
} else {
processCommand(sReturnCommand);
httpResponseRedirect(client);
}
break;
}
if (nCommandPos>-1) {
sReturnCommand[nCommandPos++] = c;
}
if (c == '?' && nCommandPos == -1) {
nCommandPos = 0;
}
}
if (nCommandPos > 30) {
httpResponse414(client);
sReturnCommand[0] = '\0';
break;
}
}
if (nCommandPos!=-1) {
sReturnCommand[nCommandPos] = '\0';
}
// give the web browser time to receive the data
delay(1);
client.stop();
Serial.print("Restarting Web Server");
return sReturnCommand;
}
return '\0';
}
Edit:
I am wondering if it could be an issue with the browser. Chrome stopped working, but works on IE 
Edit2: Yeah, works fine in IE. Just Chrome that does not like it. I also made an application on android, and seems to work fine there.
