Sleepy Pi alarm not repeating - Raspberry Pi Forums

i trying make sleepy pi wake rpi regular intervals. when run example code wakeuppionalarm no modifications, pi wakes once. after next shutdown, doesn't start expected. rpi set program starts @ bootup , sends "shutdown -h now" command @ end of task, , want sleepy pi start rpi again after few hours , repeat. how can make sleep/wake process run indefinitely?

here code, copied sleepy pi example:

code: select all

//  // simple example showing how set rtc alarm pin wake arduino // , power raspberry pi //  // **** includes ***** #include "sleepypi.h" #include <time.h> #include <lowpower.h> #include <ds1374rtc.h> #include <wire.h>  const int led_pin = 13;  void alarm_isr() {     // handler alarm interrupt.     // here  }  void setup() {    // configure "standard" led pin   pinmode(led_pin, output);		   digitalwrite(led_pin,low);		// switch off led    sleepypi.enablepipower(false);      // initialize serial communication: in arduino ide use "serial monitor"   serial.begin(9600);  }  void loop()  {     // allow wake alarm trigger interrupt on falling edge.     attachinterrupt(0, alarm_isr, falling);		// alarm pin      sleepypi.enablewakeupalarm();     sleepypi.setalarm(10);              // in seconds     // enter power down state adc , bod module disabled.     // wake when wake pin low.     sleepypi.powerdown(sleep_forever, adc_off, bod_off);           // disable external pin interrupt on wake pin.     detachinterrupt(0);           // here     // example: read sensor, data logging, data transmission.     sleepypi.enablepipower(true);          serial.println("i've woken up");     digitalwrite(led_pin,high);		// switch on led     delay(250);       digitalwrite(led_pin,low);		// switch off led   }

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