- Code: Select all
void setup()
{
WiFi.init();
}
// This is the webpage that is served up by the webserver
const prog_char webpage[] PROGMEM = {"HTTP/1.1 200 OK\r\nContent-Type: text/html\r\n\r\n<center><h1>Hello World!! I am WiShield</h1><form method=\"get\" action=\"0\">Toggle LED:<input type=\"submit\" name=\"0\" value=\"LED1\"></input></form></center>"};
void loop()
{
WiFi.run();
}
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boolean states[3]; //holds led states
char stateCounter; //used as a temporary variable
char tmpStrCat[64]; //used in processing the web page
char stateBuff[4]; //used in text processing around boolToString()
char numAsCharBuff[2];
char ledChange;
void boolToString (boolean test, char returnBuffer[4])
{
returnBuffer[0] = '\0';
if (test)
{
strcat(returnBuffer, "On");
}
else
{
strcat(returnBuffer, "Off");
}
}
void printStates()
{
for (stateCounter = 0 ; stateCounter < 3; stateCounter++)
{
boolToString(states[stateCounter], stateBuff);
Serial.print("State of ");
Serial.print(stateCounter);
Serial.print(": ");
Serial.println(stateBuff);
}
}
void writeStates()
{
//set led states
digitalWrite(ledPin1, states[0]);
digitalWrite(ledPin2, states[1]);
digitalWrite(ledPin3, states[2]);
}
// This is our page serving function that generates web pages
boolean sendPage(char* URL) {
Serial.println("Page printing begun");
printStates();
writeStates();
//check whether we need to change the led state
if (URL[1] == '?' && URL[2] == 'L' && URL[3] == 'E' && URL[4] == 'D') //url has a leading /
{
ledChange = (int)(URL[5] - 48); //get the led to change.
for (stateCounter = 0 ; stateCounter < 3; stateCounter++)
{
if (ledChange == stateCounter)
{
states[stateCounter] = !states[stateCounter];
Serial.print("Have changed ");
Serial.println(ledChange);
}
}
//after having change state, return the user to the index page.
WiServer.print("<HTML><HEAD><meta http-equiv='REFRESH' content='0;url=/'></HEAD></HTML>");
return true;
}
if (strcmp(URL, "/") == false) //why is this not true?
{
WiServer.print("<html><head><title>Led switch</title></head>");
WiServer.print("<body><center>Please select the led state:<center>\n<center>");
for (stateCounter = 0; stateCounter < 3; stateCounter++) //for each led
{
numAsCharBuff[0] = (char)(stateCounter + 49); //as this is displayed use 1 - 3 rather than 0 - 2
numAsCharBuff[1] = '\0'; //strcat expects a string (array of chars) rather than a single character.
//This string is a character plus string terminator.
tmpStrCat[0] = '\0'; //initialise string
strcat(tmpStrCat, "<a href=?LED"); //start the string
tmpStrCat[12] = (char)(stateCounter + 48); //add the led number
tmpStrCat[13] = '\0'; //terminate the string properly for later.
strcat(tmpStrCat, ">Led ");
strcat(tmpStrCat, numAsCharBuff);
strcat(tmpStrCat, ": ");
boolToString(states[stateCounter], stateBuff);
strcat(tmpStrCat, stateBuff);
strcat(tmpStrCat, "</a> "); //we now have something in the range of <a href=?LED0>Led 0: Off</a>
WiServer.print(tmpStrCat);
}
WiServer.print("</html> ");
return true;
}
}
void setup() {
// Initialize WiServer and have it use the sendMyPage function to serve pages
pinMode(ledPin1, OUTPUT);
pinMode(ledPin2, OUTPUT);
pinMode(ledPin3, OUTPUT);
Serial.begin(9600);
WiServer.init(sendPage);
states[0] = false;
states[1] = false;
states[2] = false;
}
void loop(){
// Run WiServer
WiServer.server_task();
delay(10);
}
An example of the begining of what i want to do:
I can simple plug a ping seansor into my arduno and plug it into the computer, then easly program my arduino to call a ping function and then read the value of the seansor, then through some conversion math i can convert that value to inches and serial print it and be able to see the distance the ping is reading on the serial monitor. then add the wisheild to the arduino and hook up the ping, and through some slightly more complex code be able to still see the ping distance over serial monitor, now just completly wirelessly. first off, how do i acomplish that and where do i start?
