first commit
This commit is contained in:
Jérôme Delacotte
69
WatchDog/WATCHDOG.ino
Executable file
69
WatchDog/WATCHDOG.ino
Executable file
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//Optimisation de la consommation
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#include <avr/power.h>
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#include <avr/sleep.h>
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#include <avr/power.h>
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#include <avr/wdt.h>
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volatile int f_wdt=1;
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// Watchdog Interrupt Service est exécité lors d'un timeout du WDT
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ISR(WDT_vect) {
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if(f_wdt == 0) {
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f_wdt = 1; // flag global
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}
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}
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// paramètre : 0=16ms, 1=32ms, 2=64ms, 3=128ms, 4=250ms, 5=500ms, 6=1 sec,7=2 sec, 8=4 sec, 9=8 sec
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void setup_watchdog(int ii) {
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byte bb;
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int ww;
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if (ii > 9 ) ii=9;
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bb=ii & 7;
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if (ii > 7) bb|= (1<<5);
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bb|= (1<<WDCE);
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ww=bb;
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// Clear the reset flag
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MCUSR &= ~(1<<WDRF);
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// start timed sequence
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WDTCSR |= (1<<WDCE) | (1<<WDE);
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// set new watchdog timeout value
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WDTCSR = bb;
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WDTCSR |= _BV(WDIE);
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}
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void enterSleep(void) {
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set_sleep_mode(SLEEP_MODE_PWR_DOWN);
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sleep_enable();
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sleep_mode(); //Entre dans le mode veille choisi
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// Le programme va reprendre ici après le timeout du WDT
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sleep_disable(); // La 1ère chose à faire est de désactiver le mode veille
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}
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//************* SETUP *************
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void setup() {
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//Optimisation de la consommation
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//power_adc_disable(); // Convertisseur Analog / Digital pour les entrées analogiques
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//power_spi_disable();
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//power_twi_disable();
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// Si pas besoin de communiquer par l'usb
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//power_usart0_disable();
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//Extinction des timers, attention timer0 utilisé par millis ou delay
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//power_timer0_disable();
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//power_timer1_disable();
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//power_timer2_disable();
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setup_watchdog(9);
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}
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//************* LOOP *************
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void loop() {
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if (f_wdt == 1) {
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// Effectuer les mesures ici f_wdt = 0; // Ne pas oublier d'initialiser le flag
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enterSleep(); //Revenir en mode veille
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} else {
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/* Do nothing. */
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}
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}
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149
WatchDog/WatchDog.ino
Executable file
149
WatchDog/WatchDog.ino
Executable file
@@ -0,0 +1,149 @@
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//****************************************************************
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/*
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* Watchdog Sleep Example
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* Demonstrate the Watchdog and Sleep Functions
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* Photoresistor on analog0 Piezo Speaker on pin 10
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*
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* KHM 2008 / Lab3/ Martin Nawrath nawrath@khm.de
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* Kunsthochschule fuer Medien Koeln
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* Academy of Media Arts Cologne
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*/
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//****************************************************************
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#include <avr/sleep.h>
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#include <avr/wdt.h>
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#ifndef cbi
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#define cbi(sfr, bit) (_SFR_BYTE(sfr) &= ~_BV(bit))
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#endif
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#ifndef sbi
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#define sbi(sfr, bit) (_SFR_BYTE(sfr) |= _BV(bit))
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#endif
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int nint;
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int pinLed=13;
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int pinPiezoSpeaker=10;
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volatile boolean f_wdt=1;
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void setup(){
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Serial.begin(38400);
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pinMode(pinLed,OUTPUT);
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pinMode(pinPiezoSpeaker,OUTPUT);
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Serial.println("nightingale");
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// CPU Sleep Modes
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// SM2 SM1 SM0 Sleep Mode
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// 0 0 0 Idle
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// 0 0 1 ADC Noise Reduction
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// 0 1 0 Power-down
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// 0 1 1 Power-save
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// 1 0 0 Reserved
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// 1 0 1 Reserved
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// 1 1 0 Standby(1)
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cbi( SMCR,SE ); // sleep enable, power down mode
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cbi( SMCR,SM0 ); // power down mode
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sbi( SMCR,SM1 ); // power down mode
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cbi( SMCR,SM2 ); // power down mode
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setup_watchdog(8);
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}
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byte del;
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int cnt;
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byte state=0;
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int light=0;
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//****************************************************************
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//****************************************************************
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//****************************************************************
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void loop(){
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if (f_wdt==1) { // wait for timed out watchdog / flag is set when a watchdog timeout occurs
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f_wdt=0; // reset flag
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light=analogRead(A2); // reading photoresistor
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Serial.print("light: " );
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Serial.println(light );
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switch (state){
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case 0: // waiting for dawn
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if (light < 500) { // light threshold
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state=1;
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}
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break;
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case 1: // waiting for dusk
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if (light > 700) { // light threshold
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state=0;
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whistle();
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}
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break;
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}
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nint++;
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digitalWrite(pinLed,1); // let led blink
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Serial.print("Sleep " );
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Serial.println(nint );
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delay(2); // wait until the last serial character is send
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digitalWrite(pinLed,0);
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pinMode(pinLed,INPUT); // set all used port to intput to save power
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pinMode(pinPiezoSpeaker,INPUT); // set all used port to intput to save power
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system_sleep();
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pinMode(pinLed,OUTPUT); // set all ports into state before sleep
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pinMode(pinPiezoSpeaker,OUTPUT); // set all ports into state before sleep
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}
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}
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//****************************************************************
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// put some whiste sound on piezo
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void whistle() {
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for (int ii = 0; ii<= 20; ii++) {
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for (del=0; del <=254; del++) {
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digitalWrite(pinPiezoSpeaker,0);
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delayMicroseconds((ii*5)+(del * 2));
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digitalWrite(pinPiezoSpeaker,1);
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delayMicroseconds((ii*5)+(del * 2));
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}
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PORTB ^= 32; // toggle pinLed
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}
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}
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//****************************************************************
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// set system into the sleep state
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// system wakes up when wtchdog is timed out
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void system_sleep() {
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cbi(ADCSRA,ADEN); // switch Analog to Digitalconverter OFF
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set_sleep_mode(SLEEP_MODE_PWR_DOWN); // sleep mode is set here
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sleep_enable();
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sleep_mode(); // System sleeps here
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sleep_disable(); // System continues execution here when watchdog timed out
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sbi(ADCSRA,ADEN); // switch Analog to Digitalconverter ON
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}
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//****************************************************************
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// 0=16ms, 1=32ms,2=64ms,3=128ms,4=250ms,5=500ms
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// 6=1 sec,7=2 sec, 8=4 sec, 9= 8sec
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void setup_watchdog(int ii) {
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byte bb;
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int ww;
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if (ii > 9 ) ii=9;
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bb=ii & 7;
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if (ii > 7) bb|= (1<<5);
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bb|= (1<<WDCE);
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ww=bb;
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Serial.println(ww);
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MCUSR &= ~(1<<WDRF);
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// start timed sequence
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WDTCSR |= (1<<WDCE) | (1<<WDE);
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// set new watchdog timeout value
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WDTCSR = bb;
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WDTCSR |= _BV(WDIE);
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}
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//****************************************************************
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// Watchdog Interrupt Service / is executed when watchdog timed out
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ISR(WDT_vect) {
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f_wdt=1; // set global flag
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}
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