WakePiPeriodicallyOnAlarm.ino Not Working As Expected

[kiteboy]

Hi looking for advice really

Im trying to start the Pi at say 3pm and every 30mins wake up and do its thing and then shutdown I have the sleepy pi 2 starting every 30mins fine but not on or close to the 30min mark ie 3pm ......3.30pm.....4pm All I can seem to do is start every 30min and that depends on the compilatiion time itself

Can anybody help please this is what I get in the serial monitor and in this example it would wake up and start again at 15:23 say

Starting, but I'm going to go to sleep for a while... Ok, Time = 14:53:40, Date (D/M/Y) = 24/8/2017 Alarm Set for every: 30 minutes The code im using is:

Can anybody see anything wrong......im oonly posting bits Ive changed (which is very littlee anyway) ------ so close to getting this working

//Simple example showing how to set the RTC alarm pin to periodically wake up the Arduino // which in turn wakes up the Rpi. You can use this to do things with the Rpi // at regular intervals i.e. like taking a photograph. // // Note, in this example the Rpi is woken up for every 5 minutes (you can change that). // Once woken it is then shutdown after 1 minute (you can change that) unless the user // hasn't already shut the Rpi down. The system then goes into low power mode until // the next scheduled time interval to wakeup. // // This example shows an alternative method than the Timer to do periodic wakeups. // // To test on the RPi without power cycling and using the Arduino IDE // to view the debug messages, comment out these line (with a //): // // SleepyPi.enablePiPower(true); // SleepyPi.piShutdown();
// SleepyPi.enableExtPower(false);
// // Also either fit the Power Jumper or enable // self-power. http://spellfoundry.com/sleepy-pi/programming-arduino-ide/ //

// ** INCLUDES ***

include

include

include

include

include

include

const char *monthName[12] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };

const int LED_PIN = 13;

// Globals // ++++++++++++++++++++ CHANGE ME ++++++++++++++++++ uint8_t WakeUp_StartHour = 15; // Hour in 24 hour clock uint8_t WakeUp_StartMinute = 30; // Minutes

unsigned long MAX_RPI_TIME_TO_STAY_AWAKE_MS = 60000; // in ms - so this is 60 seconds

define kPI_CURRENT_THRESHOLD_MA 110 // Shutdown current threshold in mA. When the

                                                           // when the Rpi is below this, it is "shutdown"
                                                           // This will vary from Rpi model to Rpi model
                                                           // and you will need to fine tune it for each Rpi
                                                           // See Code below for tuning code

// ++++++++++++++++++++ END CHANGE ME ++++++++++++++++++

tmElements_t tm; uint8_t nextWakeTime;

void alarm_isr() { // Just a handler for the alarm interrupt. // You could do something here }

void setup() { // Configure "Standard" LED pin pinMode(LED_PIN, OUTPUT);
digitalWrite(LED_PIN,LOW); // Switch off LED

// initialize serial communication: In Arduino IDE use "Serial Monitor" Serial.begin(9600); Serial.println("Starting, but I'm going to go to sleep for a while..."); delay(250);

SleepyPi.rtcInit(true); SleepyPi.enablePiPower(false); SleepyPi.enableExtPower(false);

// Default the clock to the time this was compiled. // Comment out if the clock is set by other means // ...get the date and time the compiler was run if (getDate(DATE) && getTime(TIME)) { // and configure the RTC with this info SleepyPi.setTime(DateTime(F(DATE), F(TIME))); }

printTimeNow();

Serial.print("Alarm Set for every: "); Serial.print(WakeUp_StartMinute); Serial.println(" minutes");

// Calculate the initial Start Time nextWakeTime = CalcNextWakeTime();

}

void loop() { unsigned long TimeOutStart, ElapsedTimeMs,TimeOutEnd ; bool pi_running;

// Allow wake up alarm to trigger interrupt on falling edge.
attachInterrupt(0, alarm_isr, FALLING);   // Alarm pin

SleepyPi.enableWakeupAlarm(true);

// Setup the Alarm Time

SleepyPi.setAlarm(WakeUp_StartHour,WakeUp_StartMinute); // Hours & Minutes i.e. 22:07 on the 24 hour clock
SleepyPi.setAlarm(nextWakeTime);

[daghemo]

Hi @kiteboy, mee too I'm interested in this! Have you found a solution?

[kiteboy]

No sorry - didnt exactly get around that issue. Very few support avenues too. If you find any process of doing it let me know

[daghemo]

I understand. Still waiting for an anwer from @SpellFoundry on another theme. A good board, what a pity.