twitter-stepper

twitter-stepper.pde

//Twitter-Stepper Test

#include <SPI.h>
#include <Ethernet.h>
#include <TextFinder.h>

#include <Stepper.h>
#define STEPS 200

// MAC address and server DNS:
byte mac[] = {  
  0x90, 0xA2, 0xDA, 0x00, 0x7E, 0xE9 };
char server[] = "twitknit-json-parsing.herokuapp.com";

EthernetClient client;
TextFinder finder (client);

Stepper stepper1(STEPS, 2, 3, 4, 5);

void setup() {

  // set stepper speed
  stepper1.setSpeed(60);

  // start the serial library:
  Serial.begin(9600);

  // start the ethernet connection:
  Ethernet.begin(mac);

  if (Ethernet.begin(mac) == 0) {

    Serial.println("Failed to configure Ethernet using DHCP");
    // no point in carrying on, so do nothing:
    while(true);
  }

  // give the ethernet shield a second to initialize:
  delay(1000);
  Serial.println("connecting...");

  // if you get a connection, report back via serial:
  if (client.connect(server, 80)) {

    Serial.println("connected");

    // make HTTP GET request
    client.println("GET / HTTP/1.0");
    client.println("HOST: twitknit-json-parsing.herokuapp.com");
    client.println();

  } else {

    // if connection failed:
    Serial.println("connection failed");
  }
}

void loop() {

long value = 5;
  
  // if there are incoming bytes available from the server, read them and print them
  if (client.available()) {
    char c = client.read();
    Serial.print(c);

    // TextFinder code:
    if (finder.find("*") == true) { //find asterisk
      long value = finder.getValue(); // get numeric value
      Serial.print(value);
      Serial.println(" tweets");
    }
  }

  // if the server is disconnected, stop the client:
  if (!client.connected()) {
    Serial.println();
    Serial.println("disconnecting");
    client.stop();

    // do nothing more
    while(true);
  }

  // stepper instructions upon recieving tweets:
  stepper1.step(value * 1000);
  delay(500);
  stepper1.step(value * -1000);
}