LowPower.DeepSleep 24h doesn't work

[JefDeRycke]

Hi Everyone,

I am using following code on the MKRFOX1200.
I need the board to goto sleep for 24h (or 48), wake up send a message and goto sleep again.

I have the following code:

#include <SigFox.h>
#include <ArduinoLowPower.h>
#include "Maxbotix.h"
#define ReportRequest 5
#define GotoSleep 4
#define SLEEPTIME 1440 * 60 * 1000 // Set the delay to 1440 minutes (1440 min x 60 seconds x 1000 milliseconds)
int DEBUG = true;
String strPercent;
String strPercentBat;
String strMessageLevel;
String strMessageBat;
boolean DailyLevelReported = false;

//afstandsensor
#define DISTANCE_SENSOR 6 //Maxbotix PW

long duration, cm, inches;
int BatteryValue;
long BatteryVoltage;
int BatteryPercent;
//distance
long distance;
int tanklevel;

//afstandsensor
Maxbotix rangeSensorPW(DISTANCE_SENSOR, Maxbotix::PW, Maxbotix::XL, Maxbotix::BEST);

//Response from Sigfox server
int sgfResponse = 0;

void setup() {

pinMode(ReportRequest, INPUT_PULLUP);
pinMode(GotoSleep, INPUT_PULLUP);

  if (!SigFox.begin()) {
  // Something is wrong
  reboot();
  }
    DailyLevelReported = false;

SigFox.end(); // Send module to standby until we need to send a message
SigFox.debug(); // Important (for more information check the Forum http://forum.arduino.cc/index.php?topic=478950.0;nowap)

LowPower.attachInterruptWakeup(RTC_ALARM_WAKEUP, dummy, CHANGE);
}

void loop() {

distance = rangeSensorPW.getRange();
BatteryValue = analogRead(ADC_BATTERY);
BatteryVoltage = BatteryValue / 100;
BatteryPercent = map(BatteryValue, 0, 310, 0, 100);
tanklevel = map(distance, 1, 148, 100, 0);

SigFox.begin();
// Wait at least 30mS after first configuration (100mS before)
delay(100);
if (tanklevel < 10) strPercent = "%%%";
else strPercent = "%%";
if (BatteryPercent < 10) strPercentBat = "%%%";
else if (BatteryPercent = 100) strPercentBat = "%";
else strPercentBat = "%%";
strMessageLevel = "Tank ";
strMessageBat = "Battery ";
SigFox.beginPacket();
SigFox.print(tanklevel + strPercent + BatteryPercent + strPercentBat);

int ret = SigFox.endPacket();

if (ret == 0){

SigFox.end();
LowPower.deepSleep(uint32_t(SLEEPTIME));

}

}

void reboot() {
NVIC_SystemReset();
while (1);

}

void dummy() {
volatile int ttt = 0;
}

When I use 15mins for SLEEPTIME everything is good, but when I use 1440mins, the board goes to sleep but wakes up immediatly, sends the message, goes to sleep, wakes up again without delay.

I read in another post that the max sleep time is 49 days, so far I haven't tested where the limit is for my situation. I just know it works with 8mins and 15mins but not with 1440mins.

Someone any ideas?

Thanks,

Jef