timer + sleepmodus

system · February 3, 2014, 6:24pm

Hello,
just have a question. I didnt find an answer in other threads about sleep mode
I want to let start ardunio executing a sketch after i pressed a button. So after uploading arduino uno should go to sleep modus.
I write it in the following way.

void sleep() //
{
Serial.println("going to sleep");
delay(50);

set_sleep_mode (SLEEP_MODE_PWR_DOWN);
sleep_enable();

attachInterrupt (1, wake, HIGH);
sleep_disable();
detachInterrupt(1);

}

[/quote]

and

void wake () //
{
sleep_disable();
detachInterrupt(1);
Serial.println("waking up");

}

[/quote]
it works, but arduino needs some time to leave the sleep modus.

But i have a function in my sketch. I use a timer for it.
Timer1.initialize(8000000); //
Timer1.attachInterrupt(function); //

void function()
{....}

so if try to use these lines of code in my sketch, the sketch doesnt start.
I saw here Arduino Playground - HomePage written that its not alowed to use the timer in the function

void wake () //

[/quote] and i dont use a timer in this function., but thesketch doesnt work.

system · February 3, 2014, 7:08pm

I'm sure that the fine folks at http://snippets-r-us.com will be happy to look at your snippets.

system · February 3, 2014, 7:35pm

Here is the sketch. If I use a timer, the sketch does not start(does nothing)

   #include <avr/sleep.h>
#include <TimerOne.h>
#include <LiquidCrystal_I2C.h>   // 
#include <Sensirion.h>       // 
#include <Wire.h>             
#include <DS1307RTC.h>
#include <Time.h>
#include <SD.h>

const int PWM_pin =  5;
const int Lightsensor = 2;
const int switch = 3;
const uint8_t dataPin  =  6; // 
const uint8_t clockPin =  7; // 
const int chipSelect   = 10;
static boolean Start = true;
byte pwm=200; 

float Temperature=0; //
float Humidity=0;  
float Taupunkt=0;   

volatile unsigned long x = 0; // 
unsigned long previousMillis = 0; 
volatile unsigned long y = 0;

Sensirion Temperatursensor = Sensirion(dataPin, clockPin);
LiquidCrystal_I2C lcd(0x20,16,2);

void setup(){
  Serial.begin(9600);
  lcd.init(); 
  lcd.backlight();
  
  pinMode(PWM_pin, OUTPUT);
  pinMode(Lightsensor, INPUT); // 
  pinMode(switch,INPUT);

  attachInterrupt(0, count, RISING);
  //attachInterrupt(1, wake, HIGH); 
 Timer1.initialize(8000000); // 
 Timer1.attachInterrupt(mesure); // 
  
}

void mesure() 
{ 
...
}
  
 void wake ()       // 
{
  sleep_disable();
  detachInterrupt(1);
  Serial.println("waking up");
  
}



void loop (){
  
  if (digitalRead(switch)==HIGH)  {    // 
    if (Start){  // 
      y=0;
      Serial.println("Start Motor.");  // 
      analogWrite(PWM_pin,pwm);
      previousMillis = millis();          //
      
      x = 0;                              // 
      Start = false;
    }
    if (millis()-previousMillis>1000){  //  
     
      
      previousMillis = millis();         // Startzeit setzen
     Serial.print("RPM= ");Serial.print(x*60);Serial.println("RPM");  // 
      if ( x*60<2520) 
         { analogWrite(5,pwm++);}
       if ( x*60>2550)
          { analogWrite(5, pwm--);}
        if ( x*60==0)
        { analogWrite( 5, 0);}
      
      y+=x;
      x = 0;                                // 
  
  }
    
    
  }else {                       // 
    Start = true;
   
   sleep();
  }  
} // end loop()

void count(){
  x++; 
             // 
             
}


void sleep()              // 
{
    Serial.println("going to sleep");
    delay(50);
    
  
    
    set_sleep_mode (SLEEP_MODE_PWR_DOWN);  
    sleep_enable();
    
    attachInterrupt (1, wake, HIGH);
    sleep_disable();
    detachInterrupt(1);
    
}

system · February 4, 2014, 12:02am

Does anybody has an idia?

system · February 4, 2014, 8:49am

Can anybody say please, how can I avoid using a Timer if want some function works for example every 10 seconds?

UKHeliBob · February 4, 2014, 9:05am

Can anybody say please, how can I avoid using a Timer if want some function works for example every 10 seconds?

Your program already has an example of how to do it

    if (millis()-previousMillis>1000){  //  
     
      
      previousMillis = millis();         // Startzeit setzen

system · February 4, 2014, 9:38am

UKHeliBob:

Can anybody say please, how can I avoid using a Timer if want some function works for example every 10 seconds?

Your program already has an example of how to do it
    if (millis()-previousMillis>1000){  //  

previousMillis = millis(); //

But I cannot use this lines outside of loop ()? I mean in setup ()

system · February 4, 2014, 9:39am

But I cannot use this lines outside of loop ()? I mean in setup ()

OK. I'll bite. Why can't you?

system · February 4, 2014, 10:01am

Motorcontrol.ino: In function 'void setup()':
Motorcontrol:52: error: a function-definition is not allowed here before '{' token
Motorcontrol:191: error: expected `}' at end of input

             #include <avr/sleep.h>
#include <TimerOne.h>
#include <LiquidCrystal_I2C.h>   // 
#include <Sensirion.h>       // 
#include <Wire.h>             
#include <DS1307RTC.h>
#include <Time.h>
#include <SD.h>

const int PWM_pin =  5;
const int Lightsensor = 2;
const int switchpin = 3;
const uint8_t dataPin  =  6; // 
const uint8_t clockPin =  7; // 
const int chipSelect   = 10;
static boolean Start = true;
byte pwm=200; 

float Temperature=0; //
float Humidity=0;  
float Taupunkt=0;   

volatile unsigned long x = 0; // 
unsigned long previousMillis = 0; 
volatile unsigned long y = 0;

Sensirion Temperatursensor = Sensirion(dataPin, clockPin);
LiquidCrystal_I2C lcd(0x20,16,2);

void setup(){
  Serial.begin(9600);
  lcd.init(); 
  lcd.backlight();
  
  pinMode(PWM_pin, OUTPUT);
  pinMode(Lightsensor, INPUT); // 
  pinMode(switchpin,INPUT);

  attachInterrupt(0, count, RISING);
  //attachInterrupt(1, wake, HIGH); 
  if (millis()-previousMillis>8000){  //  
     
     mesure();
      
      previousMillis = millis();         //

}

void mesure()
{ 
 
 {
  Serial.begin (9600);
   
   Temperatursensor.measure(&Temperature, &Humidity, &Taupunkt);  // 
  
  
 
  Serial.print (x);
  lcd.print(x);
  File mesureFile = SD.open("mesured.txt", FILE_WRITE); // 

  if (mesureFile)
  {
    //Schreibe auf SD-Karte
    mesureFile.print("Temperature: ");  
    mesureFile.print(Temperature);      // 
    mesureFile.println("°C");
    

   mesureFile.print("Humidity: ");
    mesureFile.print(Humidity);
    mesureFile.println("%");
    mesureFile.println ("cycles");
    mesureFile.print   (x);

 

    mesureFile.print(day());
    mesureFile.print(":");
    mesureFile.print(month());
    mesureFile.print(":");
    mesureFile.print(year());
    mesureFile.print("; ");
    mesureFile.print(hour());
    mesureFile.print(":");
    mesureFile.print(minute());
    mesureFile.print(":");
    mesureFile.print(second());
    mesureFile.println("; ");

    mesureFile.close();
  }
  else
  {
    Serial.println("Erroo");
     digitalWrite(A0, HIGH);
     
  }
 
 
  
 }
}
  
  
 void wake ()       // 
{
  sleep_disable();
  detachInterrupt(1);
  Serial.println("waking up");
  
}



void loop (){
  
  if (digitalRead(switch)==HIGH)  {    // 
    if (Start){  // 
      y=0;
      Serial.println("Start Motor.");  // 
      analogWrite(PWM_pin,pwm);
      previousMillis = millis();          //
      
      x = 0;                              // 
      Start = false;
    }
    if (millis()-previousMillis>1000){  //  
     
      
      previousMillis = millis();         // Startzeit setzen
     Serial.print("RPM= ");Serial.print(x*60);Serial.println("RPM");  // 
      if ( x*60<2520) 
         { analogWrite(5,pwm++);}
       if ( x*60>2550)
          { analogWrite(5, pwm--);}
        if ( x*60==0)
        { analogWrite( 5, 0);}
      
      y+=x;
      x = 0;                                // 
  
  }
    
    
  }else {                       // 
    Start = true;
   
   sleep();
  }  
} // end loop()

void count(){
  x++; 
             // 
             
}


void sleep()              // 
{
    Serial.println("going to sleep");
    delay(50);
    
  
    
    set_sleep_mode (SLEEP_MODE_PWR_DOWN);  
    sleep_enable();
    
    attachInterrupt (1, wake, HIGH);
    sleep_disable();
    detachInterrupt(1);
    
}

UKHeliBob · February 4, 2014, 10:28am

The error has nothing to do with the use of miilis() for timing.
Try Auto Format on you code for a clue as to the problem. It will probably be more obvious what the problem is if you put each opening and closing brace on its own line.

system · February 4, 2014, 10:37am

Can you tell me please what can be the problem if i use Timer. initialize from the first sketch (third post)?

UKHeliBob · February 4, 2014, 11:09am

Let's establish a baseline. Does this slightly modified example from the Timer1 library work ?

#include <TimerOne.h>

void setup() 
{
  pinMode(13, OUTPUT);     
  Timer1.initialize(8000000);
  Timer1.attachInterrupt( timerIsr ); // attach the service routine here
}

void loop()
{
}

void timerIsr()
{
  // Toggle LED
  digitalWrite( 13, digitalRead( 13 ) ^ 1 );

If so, then you know that the Timer1 library is working and we can go on from there.

system · February 4, 2014, 11:28am

Yes, the sketch works.
The question of the thread was, why does timer1 not work with the sleep mode? Are there some especialnesses?

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timer + sleepmodus

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