Hello everybody,
I have the following problem: Basically, I use the TimedWakeUp example from the ArduinoLowPower library. When I don’t start up the library with sensors.begin() in the void setup(), the sketch works as intended. My MKR WAN 1300 goes to sleep for 5 seconds after the board led blinks in a loop. When I uncomment sensors.begin() and start up the DallasTemperature library, the whole sketch get’s blocked it seems. There is just no blinking of the board led followed by a sleep mode. It seems like starting up the DallasTemperature library blocks the rest of the sketch and I dont know why. Did anybody else encounter something like this? Maybe somebody can confirm this behaviour, when they own the same board? I dont know, if there is a compatibility issue between both libraries and I can’t find anything on the internet about it after researching the issue for a few days.
Should the library start up be defined somewhere else in the code?
Thanks for any advise or hints!
/*
TimedWakeup
This sketch demonstrates the usage of Internal Interrupts to wakeup a chip in sleep mode.
Sleep modes allow a significant drop in the power usage of a board while it does nothing waiting for an event to happen. Battery powered application can take advantage of these modes to enhance battery life significantly.
In this sketch, the internal RTC will wake up the processor every 2 seconds.
Please note that, if the processor is sleeping, a new sketch can't be uploaded. To overcome this, manually reset the board (usually with a single or double tap to the RESET button)
This example code is in the public domain.
*/
#define ONE_WIRE_BUS 6
#include <ArduinoLowPower.h>
#include <OneWire.h>
#include <DallasTemperature.h>
OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature sensors(&oneWire);
int alarm_source = 0;
void setup() {
delay(10000);
pinMode(LED_BUILTIN, OUTPUT);
// start serial port
Serial.begin(9600);
// Start up the library
//sensors.begin(); // uncomment this and the Sketch gets blocked and never goes into sleep mode
// Uncomment this function if you wish to attach function dummy when RTC wakes up the chip
LowPower.attachInterruptWakeup(RTC_ALARM_WAKEUP, alarmEvent0, CHANGE); // Zum Aufwecken
}
void loop() {
digitalWrite(LED_BUILTIN, HIGH);
delay(500);
digitalWrite(LED_BUILTIN, LOW);
delay(500);
LowPower.sleep(5000);
}
void alarmEvent0() {
alarm_source = 0;
}