Hi all
The other day I found out I wanted to finaly use the WiFly I bought a couple of months ago. I wanted to use it to turn on and off a LED from a web browser. After digging around for some time and testing out different things I finaly found this page: http://arduino.cc/forum/index.php/topic,6595.0.html
It was perfect for what I wanted to achieve so I copied the sketch and modifyed it to work with my WiFly. The problem I run in to is that I cant get it to send response back to the browser. I had to change every server.print line with Serial.println to even manage to compile it but when I did that it works but only sends info to serial monitor. Here are the the modified code I use
/*
Arduino Data Web Server
Performs actions on Arduino and/or returns data from Arduino to a webbrowser request URL:
- To turn on LED on pin 8, use web browser to visit your Arduino via: http://x.x.x.x/digitalWrite/7/1
- To turn it off send: http://x.x.x.x/digitalWrite/7/0
- To read analog0 value, send: http://x.x.x.x/analogRead/0
IMPORTANT:
Commands are case sensitive, but I wrote this as simple as possible so it can be easily adapted to your needs.
Have fun!
created Sept 17, 2010
by Hari Wiguna, g33k.blogspot.com
*/
//#include "Streaming"
#include <SPI.h>
//#include <Ethernet.h>
#include <string.h>
#include "WiFly.h"
#include "Credentials.h"
#include <SoftwareSerial.h>
SoftwareSerial SerialRNXV(2, 3);
// MAC address can be anything that is unique within your network.
// IP is the address the Arduino Ethernet Card would respond to. It needs to be an unused address within your network.
//byte mac[] = {0x00, 0x1E, 0x2A, 0x77, 0x24, 0x02 };
//byte ip[] = {192,168,7,12 }; // This is typically 10.0.0.x
WiFlyServer server(882); // Port 80 is http.
//-- Commands and parameters (sent by browser) --
char cmd[15]; // Nothing magical about 15, increase these if you need longer commands/parameters
char param1[15];
char param2[15];
//-- Sample Ports ---
void SetupSamplePorts()
{
// To illustrate how to use this, I have an LED and a Potentiometer.
// The 10K potentiometer left lead is connected to GND, right lead to +5V, and middle lead to Analog 0.
// The LED cathode is on digital pin 7 and anode is on pin 8.
pinMode(7,OUTPUT); digitalWrite(7,LOW); // I use this pin as GND for the LED.
pinMode(8,OUTPUT); // Sample output, unable to use built-in LED at pin 13 because Ethernet Shield uses pins 10,11,12,13.
}
void setup()
{
//Ethernet.begin(mac, ip);
//server.begin();
//Serial.begin(57600);
Serial.begin(9600);
SerialRNXV.begin(9600);
WiFly.setUart(&SerialRNXV);
Serial.println("begin");
WiFly.begin();
Serial.println("began");
if (!WiFly.join(ssid, passphrase)) {
Serial.println("Association failed.");
while (1) {
// Hang on failure.
}
}
//Serial.println("IP: ");
//Serial.println(WiFly.ip());
//pinMode(ledPin,OUTPUT);
server.begin(); // begin the server
//Serial.begin(9600);
Serial.println(" ** Beginning Server ** ");
Serial.print("IP: ");
Serial.println(WiFly.ip());
server.begin();
Serial.println("Ready for commands");
//digitalWrite(ledPin, HIGH);
SetupSamplePorts();
}
#define bufferMax 128
int bufferSize;
char buffer[bufferMax];
void loop()
{
WiFlyClient client = server.available();
if (client)
{
WaitForRequest(client);
ParseReceivedRequest();
PerformRequestedCommands();
client.stop();
}
}
void WaitForRequest(WiFlyClient client) // Sets buffer[] and bufferSize
{
bufferSize = 0;
while (client.connected()) {
if (client.available()) {
char c = client.read();
if (c == '\n')
break;
else
if (bufferSize < bufferMax)
buffer[bufferSize++] = c;
else
break;
}
}
PrintNumber("bufferSize", bufferSize);
}
void ParseReceivedRequest()
{
Serial.println("in ParseReceivedRequest");
Serial.println(buffer);
//Received buffer contains "GET /cmd/param1/param2 HTTP/1.1". Break it up.
char* slash1;
char* slash2;
char* slash3;
char* space2;
slash1 = strstr(buffer, "/") + 1; // Look for first slash
slash2 = strstr(slash1, "/") + 1; // second slash
slash3 = strstr(slash2, "/") + 1; // third slash
space2 = strstr(slash2, " ") + 1; // space after second slash (in case there is no third slash)
if (slash3 > space2) slash3=slash2;
PrintString("slash1",slash1);
PrintString("slash2",slash2);
PrintString("slash3",slash3);
PrintString("space2",space2);
// strncpy does not automatically add terminating zero, but strncat does! So start with blank string and concatenate.
cmd[0] = 0;
param1[0] = 0;
param2[0] = 0;
strncat(cmd, slash1, slash2-slash1-1);
strncat(param1, slash2, slash3-slash2-1);
strncat(param2, slash3, space2-slash3-1);
PrintString("cmd",cmd);
PrintString("param1",param1);
PrintString("param2",param2);
}
void PerformRequestedCommands()
{
if ( strcmp(cmd,"digitalWrite") == 0 ) RemoteDigitalWrite();
if ( strcmp(cmd,"analogRead") == 0 ) RemoteAnalogRead();
}
void RemoteDigitalWrite()
{
int ledPin = param1[0] - '0'; // Param1 should be one digit port
int ledState = param2[0] - '0'; // Param2 should be either 1 or 0
digitalWrite(ledPin, ledState);
//-- Send response back to browser --
Serial.println("D");
Serial.println(ledPin, DEC);
Serial.println(" is ");
Serial.println( (ledState==1) ? "ON" : "off" );
//-- Send debug message to serial port --
Serial.println("RemoteDigitalWrite");
PrintNumber("ledPin", ledPin);
PrintNumber("ledState", ledState);
}
void RemoteAnalogRead()
{
// If desired, use more server.print() to send http header instead of just sending the analog value.
int analogPin = param1[0] - '0'; // Param1 should be one digit analog port
int analogValue = analogRead(analogPin);
//-- Send response back to browser --
Serial.print("A");
Serial.println(analogPin, DEC);
Serial.println(" is ");
Serial.println(analogValue,DEC);
//-- Send debug message to serial port --
Serial.println("RemoteAnalogRead");
PrintNumber("analogPin", analogPin);
PrintNumber("analogValue", analogValue);
}
void PrintString(char* label, char* str)
{
Serial.print(label);
Serial.print("=");
Serial.println(str);
}
void PrintNumber(char* label, int number)
{
Serial.print(label);
Serial.print("=");
Serial.println(number, DEC);
}
Anybody know what I'm doing wrong?
Trond
