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Modification of https://gist.github.com/4112791 by @cieslak for use with the Parallax 16x2 LCD display with backlight and piezo speaker. Code in the repeat loop is all I needed to change. See orginal gist for more info.
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| #include "SPI.h" | |
| #include "Ethernet.h" | |
| #include "SoftwareSerial.h" | |
| #include <WebServer.h> | |
| static uint8_t mac[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; // change this to your Ethernet shield's MAC address | |
| static uint8_t ip[] = { 0, 0, 0, 0 }; // change to your network | |
| #define PREFIX "" | |
| WebServer webserver(PREFIX, 80); | |
| SoftwareSerial lcd(2,3); // 2 receives data from ethernet shield, 3 sends characters to the LCD | |
| void showForm(WebServer &server, WebServer::ConnectionType type, char *, bool) { | |
| server.httpSuccess(); | |
| if (type != WebServer::HEAD) { | |
| if (type == WebServer::POST) { | |
| P(thxMsg) = "<!doctype HTML><html><body>Thanks!</body></html>"; | |
| server.printP(thxMsg); | |
| bool repeat; | |
| char name[16],value[32]; | |
| do { | |
| repeat = server.readPOSTparam(name,16,value,32); | |
| if (strcmp(name,"msg") == 0) { | |
| // values for Parallax 16x2 backlit LCD with speaker | |
| // data sheet at www.parallax.com | |
| lcd.write(12); // clear screen | |
| lcd.write(17); // backlight on | |
| lcd.print(value); | |
| lcd.write(212); // play a quarter note... | |
| lcd.write(220); // ... with this tone | |
| delay(3000); | |
| lcd.write(18); // turn backlight off | |
| } | |
| } while (repeat); | |
| } | |
| else { | |
| P(formMsg) = "<!doctype HTML><html><body><form name=\"input\" action=\"/\" method=\"post\"><input type=\"text\" name=\"msg\"><input type=\"submit\" value=\"send\"></form></body></html>"; | |
| server.printP(formMsg); | |
| } | |
| } | |
| } | |
| void setup() { | |
| Ethernet.begin(mac, ip); | |
| lcd.begin(9600); | |
| webserver.setDefaultCommand(&showForm); | |
| webserver.begin(); | |
| } | |
| void loop() { | |
| char buf[64]; | |
| int len = 64; | |
| webserver.processConnection(buf, &len); | |
| } |
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