Where to find new library's

Using Arduino Programming Questions
1

Hey guys I need some help. Spent the last couple of days trying to find sleep and interrupt library's for my UNO. Any help on where to find the zip files would be greatly appreciated.

2

Google is my usual source.

There appear to be a few to choose from for Sleep:

As for the interrupt library I am not familiar with anything like that. There is a library for pin change interrupts, and one for timer interrupts. But mostly you don't need any library to work with interrupts. What exactly are you looking for there?

3

Thanks for the response. here is the website i was looking at

http://www.engblaze.com/hush-little-microprocessor-avr-and-arduino-sleep-mode-basics/

#include <avr/interrupt.h>
#include <avr/power.h>
#include <avr/sleep.h>

are the 3 files ive been trying to find.

4

Oh, those are in the folder where Arduino is installed.

On my machine it is:

Programs\Arduino\hardware\tools\avr\avr\include\avr

5

what version do you have i have 1.6.2.
the only thing i have under
programfiles/arduino/hardware/tools
is listComPorts

6

Arduino\hardware\tools\avr\avr\include\avr

you did not follow the path

tools\avr\avr\include\avr

7

I don't know where they are in the new versions. They moved a bunch of stuff around.

Do a search in the Arduino folder. They're in there somewhere.

Either way, you don't need to find them or anything if you don't want to. You should be able to just put the #include in your sketch. They're put somewhere the IDE knows where to find them. Many of the things there are also included from Arduino.h, so you know that they're in the path somewhere.

8

hi

You just try to include the header files and run the code on that site

but I have found the following tutorials easier to understand

try to watch three of his videos

all the code can be found ForceTronics: Tutorial

Since I don't have any 10 k resistor (referring to his lesson 1)

I use the following

#include <avr/sleep.h>

int led = 7; //variable for pin that the LED is on
int count = 0; //variable to control how many times LED blinks before sleep
int wakePin = 2;  
void setup() {
   sleep_enable(); //enable the sleep capability
   set_sleep_mode(SLEEP_MODE_PWR_DOWN); //set the type of sleep mode. Default is Idle
   pinMode(led, OUTPUT); //set up the LED pin to output
   pinMode(wakePin, INPUT_PULLUP);
}

void loop() {
  
  if(count < 4) { //For first four loops blink the LED
    digitalWrite(led, HIGH);   // turn the LED on (HIGH is the voltage level)
    delay(900);               // wait 
    digitalWrite(led, LOW);    // turn the LED off by making the voltage LOW
    delay(900);       // wait 
    count++; //increment count
  }
  else { //after blinking LED setup interrupt and then go to sleep. Note that sleep will only happen once since it is disabled in ISR
    attachInterrupt(0, interruptFunction, LOW); 
    sleep_cpu(); //enter sleep mode. Next code that will be executed is the ISR when interrupt wakes Arduino from sleep
    count = 0; //Set the count back to zero 
  }
   
}

//This is the function called when the interrupt occurs (pin 2 goes LOW)
//this is often referred to as the interrupt service routine or ISR
//This cannot take any input arguments or return anything
void interruptFunction() {
 detachInterrupt(0); //this function call will turn the interrupt off
 sleep_disable(); //Disable the sleep mode so even if call to sleep is executed again it will be ignored
}

the led on pin 7 flashes four times
and sleep mode is entered when

i hook up a wire to pin 2 on my uno r3 (attachinterrupt 0) to ground (you may use a switch here)

attachInterrupt(0, interruptFunction, LOW);

to wake up my arduino

and it is working

maybe u may try all methods from my provided videos

or test out the code on your website

gl

LO

9

Thanks for that great response. Is there anyway u know to not completely disable sleep mode instead allow the inturupt to happen then after a time frame enter sleep again

10

sorry I have only tried waking up arduino with interrupt