Added interrupt driven state check(ping request) and signaling (blinky stuff)

ITS_Open_direct_2fb/ITS_Open_direct_2fb.ino

@@ -16,6 +16,7 @@ Based on the Ethernet to Thingspeak exaple  by Hans Scharler
 #include <Ethernet.h>
 
 #include "APIKey.h"
+#include "TimerOne.h"
 
 byte mac[] = { 0xD4, 0xBA, 0xD9, 0x9A, 0x7C, 0x95 }; // Must be unique on local network
 
@@ -32,6 +33,17 @@ String currentLine = "";            // string to hold the text from server
 int hsopen;
 int ethernetstatus;
 
+int ledtimer =0;
+const int ledspan =20;
+
+int pingtimer =-1;
+const int pingspan =50;
+
+int checktimer = 0;
+const int checkspan =200;
+
+int update = 0;
+
 //debug options
 boolean debug = true;
 
@@ -63,6 +75,10 @@ void setup()
   // Start Ethernet on Arduino
   setEth(-1);
   setRoom(2); 
+  
+  Timer1.initialize(100000); // 10 mal die Sekunde
+  Timer1.attachInterrupt(setLeds);
+  
   startEthernet();
 
   delay(1000);
@@ -74,6 +90,7 @@ void setup()
 void loop()
 {
   readButtons();
+  launchUpdate();
 }
 
 
@@ -91,6 +108,13 @@ void readButtons(){
   }
 }
 
+void launchUpdate(){
+  if(update==1){
+    RequestPing();
+    update = 0;
+  }
+}
+
 void startEthernet()
 {
   client.stop();
@@ -126,49 +150,91 @@ void startEthernet()
 }
 
 void setLeds(){
-  switch(ethernetstatus){
+  if (pingtimer>=0)
-    case 0:{ // ethernet fail
+  {
-      // should become blink red
+    // blink like crazy
-      analogWrite(rlight, 63);
+    if((pingtimer/2)%2 ==1){
-      analogWrite(glight, 0);
+      analogWrite(rlight, 255);
-      break;
+      analogWrite(glight, 255);
-    }
+    }else{
-    case -1:{ // ethernet unknown 
-      // should become fade green
       analogWrite(rlight, 0);
-      analogWrite(glight, 63);      
+      analogWrite(glight, 0);
-      break;
     }
-    case 1:{ // ethernet ok
+    pingtimer--;
-      switch(hsopen){
+  }else{
-        case 0:{ // closed
+    switch(ethernetstatus){
+      case 0:{ // ethernet fail
+        //blink red
+        if(ledtimer < (ledspan/2)){
           analogWrite(rlight, 255);
-          analogWrite(glight, 0);
+        }else{
-          break;
-        }
-        case 1:{ // open
           analogWrite(rlight, 0);
-          analogWrite(glight, 255);
-          break;
-        }
-        case 2:{ // wait
-          // should become fade red and green
-          analogWrite(rlight, 127);
-          analogWrite(glight, 127);
-          break;
-        }
-        case -1:{ // unknown 
-          // should become fade red
-          analogWrite(rlight, 63);
-          analogWrite(glight, 63);      
-          break;
         }
+        analogWrite(glight, 0);
+        break;
       }
-      break;
+      case -1:{ // ethernet unknown
+        // fade green
+        if(ledtimer < (ledspan/2)){
+          analogWrite(glight, (255/(ledspan/2)*ledtimer));//fade up
+        }else{
+          analogWrite(glight, 255-(255/(ledspan/2)*(ledtimer-(ledspan/2))));//fade down
+        }    
+        analogWrite(rlight, 0);
+        break;
+      }
+      case 1:{ // ethernet ok
+        switch(hsopen){
+          case 0:{ // closed
+            //red
+            analogWrite(rlight, 255);
+            analogWrite(glight, 0);
+            break;
+          }
+          case 1:{ // open
+            // green
+            analogWrite(rlight, 0);
+            analogWrite(glight, 255);
+            break;
+          }
+          case 2:{ // wait
+            // fade red and green
+            if(ledtimer < (ledspan/2)){
+              int tmp=(255/(ledspan/2)*ledtimer); 
+              analogWrite(glight, tmp);//fade up
+              analogWrite(rlight, tmp);//fade up
+              
+            }else{
+              int tmp = 255-(255/(ledspan/2)*(ledtimer-(ledspan/2)));
+              analogWrite(glight, tmp);//fade down
+              analogWrite(rlight, tmp);//fade down
+            }
+            break;
+          }
+          case -1:{ // unknown 
+            // fade red
+            if(ledtimer < (ledspan/2)){
+              analogWrite(rlight, (255/(ledspan/2)*ledtimer));//fade up
+            }else{
+              analogWrite(rlight, 255-(255/(ledspan/2)*(ledtimer-(ledspan/2))));//fade down
+            }    
+            analogWrite(glight, 0);      
+            break;
+          }
+        }      
+        break;
+      }
+    }
+    ledtimer++;
+    if ( ledtimer >= ledspan ) {
+      ledtimer = 0;
     }
   }
-  
+    checktimer++;
-  
+    if ( checktimer >= checkspan ) {
+      checktimer = 0;
+      update=1;
+    }  
 }
 
 void setEth(int statuss){
@@ -189,10 +255,16 @@ void setRoom(int statuss){
   setLeds();
 }
 
+
 void RequestState() {
   TriggerServerReq("/status-s.php",0);
 }
 
+
+void RequestPing() {
+  TriggerServerReq("/ping-get.php?apikey="+pingAPIKey,1);
+}
+
 void TriggerServerReq(String s, int mode) {
   // attempt to connect, and wait a millisecond:
   if(debug){Serial.println("connecting to server... Status req");}
@@ -261,6 +333,7 @@ int readServerStatus(int mode) {
                break;
             case 1:
                if(debug){Serial.println("Wink Wink");}
+               pingtimer = pingspan;
                break;
           }
           // close the connection to the server:

ITS_Open_direct_2fb/TimerOne.cpp

@@ -0,0 +1,101 @@
+/*
+ *  Interrupt and PWM utilities for 16 bit Timer1 on ATmega168/328
+ *  Original code by Jesse Tane for http://labs.ideo.com August 2008
+ *  Modified March 2009 by Jérôme Despatis and Jesse Tane for ATmega328 support
+ *  Modified June 2009 by Michael Polli and Jesse Tane to fix a bug in setPeriod() which caused the timer to stop
+ *
+ *  This is free software. You can redistribute it and/or modify it under
+ *  the terms of Creative Commons Attribution 3.0 United States License. 
+ *  To view a copy of this license, visit http://creativecommons.org/licenses/by/3.0/us/ 
+ *  or send a letter to Creative Commons, 171 Second Street, Suite 300, San Francisco, California, 94105, USA.
+ *
+ */
+
+#include "TimerOne.h"
+
+TimerOne Timer1;              // preinstatiate
+
+ISR(TIMER1_OVF_vect)          // interrupt service routine that wraps a user defined function supplied by attachInterrupt
+{
+  Timer1.isrCallback();
+}
+
+void TimerOne::initialize(long microseconds)
+{
+  TCCR1A = 0;                 // clear control register A 
+  TCCR1B = _BV(WGM13);        // set mode as phase and frequency correct pwm, stop the timer
+  setPeriod(microseconds);
+}
+
+void TimerOne::setPeriod(long microseconds)
+{
+  long cycles = (F_CPU * microseconds) / 2000000;                                // the counter runs backwards after TOP, interrupt is at BOTTOM so divide microseconds by 2
+  if(cycles < RESOLUTION)              clockSelectBits = _BV(CS10);              // no prescale, full xtal
+  else if((cycles >>= 3) < RESOLUTION) clockSelectBits = _BV(CS11);              // prescale by /8
+  else if((cycles >>= 3) < RESOLUTION) clockSelectBits = _BV(CS11) | _BV(CS10);  // prescale by /64
+  else if((cycles >>= 2) < RESOLUTION) clockSelectBits = _BV(CS12);              // prescale by /256
+  else if((cycles >>= 2) < RESOLUTION) clockSelectBits = _BV(CS12) | _BV(CS10);  // prescale by /1024
+  else        cycles = RESOLUTION - 1, clockSelectBits = _BV(CS12) | _BV(CS10);  // request was out of bounds, set as maximum
+  ICR1 = pwmPeriod = cycles;                                                     // ICR1 is TOP in p & f correct pwm mode
+  TCCR1B &= ~(_BV(CS10) | _BV(CS11) | _BV(CS12));
+  TCCR1B |= clockSelectBits;                                                     // reset clock select register
+}
+
+void TimerOne::setPwmDuty(char pin, int duty)
+{
+  unsigned long dutyCycle = pwmPeriod;
+  dutyCycle *= duty;
+  dutyCycle >>= 10;
+  if(pin == 1 || pin == 9)       OCR1A = dutyCycle;
+  else if(pin == 2 || pin == 10) OCR1B = dutyCycle;
+}
+
+void TimerOne::pwm(char pin, int duty, long microseconds)  // expects duty cycle to be 10 bit (1024)
+{
+  if(microseconds > 0) setPeriod(microseconds);
+  if(pin == 1 || pin == 9) {
+    DDRB |= _BV(PORTB1);                                   // sets data direction register for pwm output pin
+    TCCR1A |= _BV(COM1A1);                                 // activates the output pin
+  }
+  else if(pin == 2 || pin == 10) {
+    DDRB |= _BV(PORTB2);
+    TCCR1A |= _BV(COM1B1);
+  }
+  setPwmDuty(pin, duty);
+  start();
+}
+
+void TimerOne::disablePwm(char pin)
+{
+  if(pin == 1 || pin == 9)       TCCR1A &= ~_BV(COM1A1);   // clear the bit that enables pwm on PB1
+  else if(pin == 2 || pin == 10) TCCR1A &= ~_BV(COM1B1);   // clear the bit that enables pwm on PB2
+}
+
+void TimerOne::attachInterrupt(void (*isr)(), long microseconds)
+{
+  if(microseconds > 0) setPeriod(microseconds);
+  isrCallback = isr;                                       // register the user's callback with the real ISR
+  TIMSK1 = _BV(TOIE1);                                     // sets the timer overflow interrupt enable bit
+  sei();                                                   // ensures that interrupts are globally enabled
+  start();
+}
+
+void TimerOne::detachInterrupt()
+{
+  TIMSK1 &= ~_BV(TOIE1);                                   // clears the timer overflow interrupt enable bit 
+}
+
+void TimerOne::start()
+{
+  TCCR1B |= clockSelectBits;
+}
+
+void TimerOne::stop()
+{
+  TCCR1B &= ~(_BV(CS10) | _BV(CS11) | _BV(CS12));          // clears all clock selects bits
+}
+
+void TimerOne::restart()
+{
+  TCNT1 = 0;
+}

ITS_Open_direct_2fb/TimerOne.h

@@ -0,0 +1,41 @@
+/*
+ *  Interrupt and PWM utilities for 16 bit Timer1 on ATmega168/328
+ *  Original code by Jesse Tane for http://labs.ideo.com August 2008
+ *  Modified March 2009 by Jérôme Despatis and Jesse Tane for ATmega328 support
+ *  Modified June 2009 by Michael Polli and Jesse Tane to fix a bug in setPeriod() which caused the timer to stop
+ *
+ *  This is free software. You can redistribute it and/or modify it under
+ *  the terms of Creative Commons Attribution 3.0 United States License. 
+ *  To view a copy of this license, visit http://creativecommons.org/licenses/by/3.0/us/ 
+ *  or send a letter to Creative Commons, 171 Second Street, Suite 300, San Francisco, California, 94105, USA.
+ *
+ */
+
+#include <avr/io.h>
+#include <avr/interrupt.h>
+
+#define RESOLUTION 65536    // Timer1 is 16 bit
+
+class TimerOne
+{
+  public:
+  
+    // properties
+    unsigned int pwmPeriod;
+    unsigned char clockSelectBits;
+
+    // methods
+    void initialize(long microseconds=1000000);
+    void start();
+    void stop();
+    void restart();
+    void pwm(char pin, int duty, long microseconds=-1);
+    void disablePwm(char pin);
+    void attachInterrupt(void (*isr)(), long microseconds=-1);
+    void detachInterrupt();
+    void setPeriod(long microseconds);
+    void setPwmDuty(char pin, int duty);
+    void (*isrCallback)();
+};
+
+extern TimerOne Timer1;