Today at 12:11 pm
Hello,
after i managed to set the Arduino to sleeping mode, the Watchdog
restarts the whole system after 8 seconds. So far so good. But instead
of restarting the complete system I would like to continue after the
"sleeping line" to repeat the sleeping phase 5 more times. I already
checked out the ATMEGA4809 Datasheet, but didn't find anything to deal
with this issue. On the other hand I found some sample codes from other
ATMEGA microcontroler models where it seems to be possible. For example
here:
1 | http://shelvin.de/arduino-in-den-sleep_mode_pwr_down-schlaf-modus-setzen/
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Here is the source of the datasheet I used as a reference:
1 | http://ww1.microchip.com/downloads/en/DeviceDoc/40002015A.pdf
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Here is my code. Thanks in advance for your help!
Regards,
Manuel
1 | #include <avr/sleep.h>
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2 |
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3 | int count = 0;
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4 | void setup()
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5 | {
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6 | //Waiting time
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7 | Serial.begin(9600);
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8 | }
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9 |
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10 | void loop()
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11 | {
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12 | for(int i = 0; i < 5; i++){
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13 | delay(1000);
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14 | Serial.println(count++);
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15 | }
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16 | watchdogOn();
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17 | Serial.println("Continue here with operation to set the Arduino again in sleep mode");
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18 | //watchdogOn();
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19 | //watchdogOn();
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20 | }
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21 |
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22 | //Set Watchdog active to 8s and go to sleep
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23 | void watchdogOn() {
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24 | WDT.STATUS = WDT.STATUS & 01111111;
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25 | while (!(WDT.STATUS == 0)){
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26 | Serial.println("...");
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27 | }
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28 | CPU_CCP = 0xD8; //unlock...
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29 | WDT.CTRLA = 0xB; //set WDT to 8 seconds
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30 | Serial.println("Watchdog active...and going to sleep");
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31 | delay(100);
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32 | set_sleep_mode(SLEEP_MODE_PWR_DOWN);
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33 | sleep_enable();
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34 | sleep_mode();
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35 | sleep_disable();
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36 | delay(100);
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37 | }
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38 |
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39 | void watchdogOff() {
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40 | WDT.STATUS = WDT.STATUS & 01111111;
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41 | while (!(WDT.STATUS == 0)){
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42 | Serial.println("...");
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43 | }
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44 | CPU_CCP = 0xD8;
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45 | WDT.CTRLA = 0x0;
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46 | Serial.println("Watchdog disabled...");
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47 | }
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