Hi, using an arduino dueminalove with an ethernet shield reading from twitter.
I have the code below working well so far. I have two motors attached to two relays on pin 2 and 3 and an input (limit switch) on pin 4.
I currently have it so when the arduino reads the tweet 'feed' from twitter it runs the section within the IF statement:
if(tweet == ">feed"){
digitalWrite(ShakePin, HIGH);
Serial.println("SHAKING!");
delay (4000);
digitalWrite(ShakePin, LOW);
Serial.println("FEEDING!");
digitalWrite(MotorPin, HIGH);
justFed = 0;
}
It works and runs fine so far but...
I am trying to figure out how to get the motor (MotorPin) to run continuously within this IF statement until it hits the limit switch on pin 4 (StopPin), stop the motor, set 'justfed to 0' then continue with the loop, monitoring for changes on twitter.
i can't get my head around getting the code to halt with the motor running until it hits the switch then carry on. I am not sure whether to try a 'switch/case' within the IF statement or is there an easier way that I am not seeing?
Thanks
/*
*/
#include <SPI.h>
#include <Ethernet.h>
//variable to prevent overfeeding
boolean justFed = 1;
// Enter a MAC address and IP address for your controller below.
// The IP address will be dependent on your local network:
byte mac[] = {
0x00, 0xAA, 0xBB, 0xCC, 0xDE, 0x01 };
IPAddress ip(192,168,0,3); //<<< ENTER YOUR IP ADDRESS HERE!!!
// initialize the library instance:
EthernetClient client;
const int requestInterval = 10000; // delay between requests = 1min
char serverName[] = "api.twitter.com"; // twitter URL
boolean requested; // whether you've made a request since connecting
long lastAttemptTime = 0; // last time you connected to the server, in milliseconds
String currentLine = ""; // string to hold the text from server
String tweet = ""; // string to hold the tweet
boolean readingTweet = false; // if you're currently reading the tweet
const int StopPin = 4;
const int MotorPin = 3;
const int ShakePin = 2;
void setup() {
// SET UP PINS
pinMode(MotorPin, OUTPUT);
pinMode(ShakePin, OUTPUT);
pinMode(StopPin, INPUT); // Cutout Switch
digitalWrite(StopPin, LOW); //
// reserve space for the strings:
currentLine.reserve(256);
tweet.reserve(150);
// initialize serial:
Serial.begin(9600);
// attempt a DHCP connection:
if (!Ethernet.begin(mac)) {
// if DHCP fails, start with a hard-coded address:
Ethernet.begin(mac, ip);
}
// connect to Twitter:
connectToServer();
Serial.println("Starting up Feedatron4000");
}
void loop()
{
if (justFed){
if (client.connected()) {
if (client.available()) {
// read incoming bytes:
char inChar = client.read();
// add incoming byte to end of line:
currentLine += inChar;
// if you get a newline, clear the line:
if (inChar == '\n') {
currentLine = "";
}
// if the current line ends with <text>, it will
// be followed by the tweet:
if ( currentLine.endsWith("<text>")) {
// tweet is beginning. Clear the tweet string:
readingTweet = true;
tweet = "";
}
// if you're currently reading the bytes of a tweet,
// add them to the tweet String:
if (readingTweet) {
if (inChar != '<') {
tweet += inChar;
}
else {
// if you got a "<" character,
// you've reached the end of the tweet:
readingTweet = false;
Serial.println(tweet);
// END OF READING TWEET
if(tweet == ">feed"){
digitalWrite(ShakePin, HIGH);
// Serial.println("SHAKING!");
delay (4000);
digitalWrite(ShakePin, LOW);
Serial.println("FEEDING!");
digitalWrite(MotorPin, HIGH);
justFed = 0;
}
}
// if(tweet == ">reset"){
// digitalWrite(ShakePin, HIGH);
// Serial.println("CLEARING");
// delay (6000);
// digitalWrite(ShakePin, LOW);
// }
// close the connection to the server:
client.stop();
}
}
}
}
else if (millis() - lastAttemptTime > requestInterval) {
// if you're not connected, and two minutes have passed since
// your last connection, then attempt to connect again:
connectToServer();
}
}
//else if (millis() - lastAttemptTime > 14400000){//if four hours has passed since last feeding
// justFed = 1;
// }
else if (millis() - lastAttemptTime > 30000){//if three mins has passed since last feeding
justFed = 1;
}
}
void connectToServer() {
// attempt to connect, and wait a millisecond:
Serial.println("connecting to server...");
if (client.connect(serverName, 80)) {
Serial.println("making HTTP request...");
// make HTTP GET request to twitter:
client.println("GET /1/statuses/user_timeline.xml?screen_name=fnordfeeder&count=1 HTTP/1.1");
client.println("HOST: api.twitter.com");
client.println();
}
// note the time of this connect attempt:
lastAttemptTime = millis();
}