first commit

ATMEGA_SLEEP_ADC_RADIO_LUM/ATMEGA_SLEEP_ADC_RADIO_LUM.ino

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+#include <avr/sleep.h>
+#include <avr/power.h>    // Power management
+#include <avr/wdt.h>
+#include <Wire.h>
+#include <RCSwitch.h>
+
+const byte LED = 13;
+const byte LUMINOSITE_PIN=A0;
+const unsigned long activation = 111269;
+const unsigned long idLum=2269;
+const unsigned long desactivation = 962111;
+const unsigned int delai = 11;
+
+  RCSwitch mySwitch = RCSwitch();
+
+// watchdog interrupt
+ISR (WDT_vect) 
+{
+   wdt_disable();  // disable watchdog
+}  // end of WDT_vect
+
+void myWatchdogEnable() 
+{
+  // clear various "reset" flags
+  MCUSR = 0;     
+  // allow changes, disable reset
+  WDTCSR = bit (WDCE) | bit (WDE);
+  // set interrupt mode and an interval 
+  WDTCSR = bit (WDIE) | bit (WDP3) | bit (WDP0);    // set WDIE, and 8 seconds delay
+  wdt_reset();  // pat the dog
+
+  byte old_ADCSRA = ADCSRA;
+  // disable ADC to save power
+  ADCSRA = 0;  
+
+  // slow clock to divide by 256
+ // clock_prescale_set (clock_div_256);
+
+  // ready to sleep
+  set_sleep_mode (SLEEP_MODE_PWR_DOWN);  
+  sleep_enable();
+
+  // turn off brown-out enable in software
+  MCUCR = bit (BODS) | bit (BODSE);
+  MCUCR = bit (BODS); 
+  sleep_cpu ();  
+
+  // cancel sleep as a precaution
+  sleep_disable();
+  power_all_enable ();   // enable modules again
+    // reenable ADC
+  ADCSRA = old_ADCSRA;  
+} 
+
+ 
+void setup () { 
+  Serial.begin(9600);
+}
+
+void loop () 
+{
+
+  mySwitch.enableTransmit(2);  
+  
+  long vcc = readVcc();
+  pinMode (LED, OUTPUT);
+  digitalWrite (LED, HIGH);
+
+  pinMode (LED, INPUT);
+  int lum = analogRead(A0);
+
+  mySwitch.send(activation, 24);  
+  (delai); //delayMicroseconds
+  // LUX 
+  // R=K*L^-gamma
+  // R étant la résistance pour un niveau d'éclairement L.
+  myMessageSend(idLum,(1000.0 * lum / 1024.0));
+  
+  mySwitch.send(desactivation, 24);
+  delay(delai);
+  Serial.print(vcc);
+  Serial.print(" ");
+  Serial.println(lum);
+  delay (100);
+  digitalWrite (LED, LOW);
+  delay(10);
+  // sleep for a total of 64 seconds (8 x 8)
+ //for (int i = 0; i < 8; i++) {
+   myWatchdogEnable (); 
+// }
+  
+} 
+
+void myMessageSend(long id, long value) {
+  
+  Serial.print("Send id="); Serial.print(id);
+  Serial.print(" value="); Serial.println(value);
+  
+  mySwitch.send(id, 24); //"000000000001010100010001");
+  delay(delai);
+  mySwitch.send(value, 24); //"000000000001010100010001");
+  delay(delai);
+
+  //delay(5000);
+  //delayMicroseconds(TWOTIME*8);
+}
+//--------------------------------------------------------------------------------------------------
+// Read current supply voltage
+//--------------------------------------------------------------------------------------------------
+ long readVcc() {
+   bitClear(PRR, PRADC); ADCSRA |= bit(ADEN); // Enable the ADC
+   long result;
+   // Read 1.1V reference against Vcc
+   #if defined (__AVR_ATtiny24__) || defined(__AVR_ATtiny44__) || defined(__AVR_ATtiny84__)
+    ADMUX = _BV(MUX5) | _BV(MUX0); // For ATtiny84
+   #elif defined (__AVR_ATtiny25__) || defined(__AVR_ATtiny45__) || defined(__AVR_ATtiny85__)
+    ADMUX = _BV(MUX3) | _BV(MUX2);
+   #else
+    ADMUX = _BV(REFS0) | _BV(MUX3) | _BV(MUX2) | _BV(MUX1);  // For ATmega328
+   #endif
+   // ADCSRB = 0;
+   
+   delay(2); // Wait for Vref to settle
+   ADCSRA |= _BV(ADSC); // Convert
+   while (bit_is_set(ADCSRA,ADSC));
+   result = ADCL;
+   result |= ADCH<<8;
+   result = 1126400L / result; // Back-calculate Vcc in mV
+   // ADCSRA &= ~ bit(ADEN); bitSet(PRR, PRADC); // Disable the ADC to save power
+   
+   // analogReference(DEFAULT);
+    
+   return result; // Vcc in millivolts
+}