sleep working in attiny84 but error with attiny85?

chrisnet · March 31, 2018, 10:33pm

I am using this example found here Gammon Forum : Electronics : Microprocessors : Interrupts

My code compiles find if using Attiny85 but I get this error when using Attiny84

'PCMSK' was not declared in this scope

Is there a difference in the 84 and the 85 chip that causes the example found above not to work? If so how can I get it to work?

I have also not been able to to get this code to work...

// ATMEL ATTINY84 / ARDUINO
//
//                  +-\/-+
//            Vcc  1|    |14  Gnd
//       (D0) PB0  2|    |13  PA0 (D10/A0)
//       (D1) PB1  3|    |12  PA1 (D9/A1)
//      (D11) PB3  4|    |11  PA2 (D8/A2)
//       (D2) PB2  5|    |10  PA3 (D7/A3)
//    (D3/A7) PA7  6|    |9   PA4 (D6/A4)
//    (D4/A6) PA6  7|    |8   PA5 (D5/A5)
//  

#include <avr/sleep.h>

const int led = 0;
const byte BUTTON = 2;

void setup() {
  // put your setup code here, to run once:
pinMode(led, OUTPUT);
digitalWrite (BUTTON, HIGH);  // internal pull-up resistor


}

void loop() {
  wakeUpNow();
  sleepNow();
}

void sleepNow()
{
 set_sleep_mode(SLEEP_MODE_PWR_DOWN);
 sleep_enable();
 attachInterrupt(BUTTON, wakeUpNow, CHANGE); // interrupt : INT0 (pin 5)
 sleep_mode();  // go to sleep...
 sleep_disable();  // wake up !
 detachInterrupt(BUTTON);
}


void wakeUpNow(){
  digitalWrite(led, HIGH);
  delay(500);
  digitalWrite(led, LOW);
  delay(500);
  digitalWrite(led, HIGH);
  delay(500);
  digitalWrite(led, LOW);
  delay(500);
  digitalWrite(led, HIGH);
  delay(500);
  digitalWrite(led, LOW);
  delay(500);
  digitalWrite(led, HIGH);
  delay(500);
  digitalWrite(led, LOW);
  delay(500);
}

With this code I can not get it to wake up it stays in sleep mode?

Thanks for your help!

oqibidipo · March 31, 2018, 11:29pm

'PCMSK' was not declared in this scope

ATtiny84 has two PCMSK registers: PCMSK0 (for PA0-PA7) and PCMSK1 (PB0-PB3).

attachInterrupt(BUTTON, wakeUpNow, CHANGE); // interrupt : INT0 (pin 5)

This should be

attachInterrupt(digitalPinToInterrupt(BUTTON), wakeUpNow, CHANGE); // interrupt : INT0 (pin 5)

chrisnet · April 1, 2018, 12:24am

If I change it to

attachInterrupt(digitalPinToInterrupt(BUTTON), wakeUpNow, CHANGE); // interrupt : INT0 (pin 5)

I get this error: " 'digitalPinToInterrupt' was not declared in this scope"

Thanks for the "PCMSK1" that did work
now I have error "'PCIF' was not declared in this scope"
for this line:

GIFR   |= bit (PCIF);    // clear any outstanding interrupts

I get same error for: GIMSK |= bit (PCIE); // enable pin change interrupts

Error: 'PCIE' was not declared in this scope

Thanks for your help

chrisnet · April 1, 2018, 12:59am

After reading the datasheet better and your help I found the error in the first exp.

 PCMSK0  |= bit (PCINT4);  // want pin D4 / pin 3
  GIFR   |= bit (PCIF0);    // clear any outstanding interrupts
  GIMSK  |= bit (PCIE0);    // enable pin change interrupts

(PCINT4); // want pin D4 / pin 3 is wrong should be

(PCINT4);  // want pin D6 / pin 9

I had the wrong PIN

Now if I can get the second working I think I will understand more about "Interrupts"

// ATMEL ATTINY84 / ARDUINO
//
//                  +-\/-+
//            Vcc  1|    |14  Gnd
//       (D0) PB0  2|    |13  PA0 (D10/A0)
//       (D1) PB1  3|    |12  PA1 (D9/A1)
//      (D11) PB3  4|    |11  PA2 (D8/A2)
//       (D2) PB2  5|    |10  PA3 (D7/A3)
//    (D3/A7) PA7  6|    |9   PA4 (D6/A4)
//    (D4/A6) PA6  7|    |8   PA5 (D5/A5)
//  

#include <avr/sleep.h>

const int led = 0;
const byte BUTTON = 2;

void setup() {
  // put your setup code here, to run once:
pinMode(led, OUTPUT);
digitalWrite (BUTTON, HIGH);  // internal pull-up resistor


}

void loop() {
  wakeUpNow();
  sleepNow();
}

void sleepNow()
{
 set_sleep_mode(SLEEP_MODE_PWR_DOWN);
 sleep_enable();
 attachInterrupt(digitalPinToInterrupt(BUTTON), wakeUpNow, CHANGE); // interrupt : INT0 (pin 5)
 sleep_mode();  // go to sleep...
 sleep_disable();  // wake up !
 detachInterrupt(BUTTON);
}


void wakeUpNow(){
  digitalWrite(led, HIGH);
  delay(500);
  digitalWrite(led, LOW);
  delay(500);
  digitalWrite(led, HIGH);
  delay(500);
  digitalWrite(led, LOW);
  delay(500);
  digitalWrite(led, HIGH);
  delay(500);
  digitalWrite(led, LOW);
  delay(500);
  digitalWrite(led, HIGH);
  delay(500);
  digitalWrite(led, LOW);
  delay(500);
}

I do not understand why I get this error:
I get this error: " 'digitalPinToInterrupt' was not declared in this scope"

Thanks

DKWatson · April 1, 2018, 1:28am

digitalPinToInterrupt is an Arduino macro that simply maps the provided Arduino pin number to the pin reference for the given processor. You can work around it by simply supplying the pin reference directly. It has been documented that the problem is associated with the installation of the IDE and goes away if you re-install the package.

Re: digitalPinToInterrupt is not declared in this scope
#7
Oct 30, 2016, 01:42 am
Reinstall the arduino software. I also had the same problem. I solved that by downloading and reinstalling the arduino software.

dkw

chrisnet · April 1, 2018, 1:30am

Thanks I will try it when I get back home Thanks again

chrisnet · April 1, 2018, 1:37am

When I use attachInterrupt(2, wakeUpNow, CHANGE);
It does not wake?

DKWatson · April 1, 2018, 1:45am

Are you using the 16pin chip? Anyhow, it would not be called '2' but something like 'PB2'.

oqibidipo · April 1, 2018, 1:48am

You should use the interrupt number instead of the pin number.
The only valid value on both tiny84 and tiny85 is 0.

DKWatson · April 1, 2018, 1:49am

Sorry, I just looked at your pin diagram above so, yes

attachInterrupt(PB2, wakeUpNow, CHANGE);

DKWatson · April 1, 2018, 1:55am

oqibidipo, that's true as well. If using external interrupts then simply enable the interrupt and use the ISR(INT0_vect) function. I was thinking in terms of a pinChangeInterrupt. So the statement should be

attachInterrupt(0, wakeUpNow, CHANGE);

chrisnet · April 1, 2018, 2:02am

attachInterrupt(PB2, wakeUpNow, CHANGE);
or
attachInterrupt(PCINT11, wakeUpNow, CHANGE);

Both do not wake it from sleep

Even I replace "BUTTON" with PB2 or PCINT11 and upload the sketch it still does not wake

chrisnet · April 1, 2018, 2:07am

// ATMEL ATTINY84 / ARDUINO
//
//                  +-\/-+
//            Vcc  1|    |14  Gnd
//       (D0) PB0  2|    |13  PA0 (D10/A0)
//       (D1) PB1  3|    |12  PA1 (D9/A1)
//      (D11) PB3  4|    |11  PA2 (D8/A2)
//       (D2) PB2  5|    |10  PA3 (D7/A3)
//    (D3/A7) PA7  6|    |9   PA4 (D6/A4)
//    (D4/A6) PA6  7|    |8   PA5 (D5/A5)
//  

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

const int led = 5;
const byte BUTTON = 0;

void setup() {
  // put your setup code here, to run once:
pinMode(led, OUTPUT);
digitalWrite (BUTTON, HIGH);  // internal pull-up resistor


}

void loop() {
  wakeUpNow();
  sleepNow();
}

void sleepNow()
{
 set_sleep_mode(SLEEP_MODE_PWR_DOWN);
 sleep_enable();
attachInterrupt(PCINT0, wakeUpNow, CHANGE); // interrupt : INT0 (pin 13)
 sleep_mode();  // go to sleep...
 sleep_disable();  // wake up !
 detachInterrupt(BUTTON);
}


void wakeUpNow(){
  digitalWrite(led, HIGH);
}

This must not be right because it still will not wake

oqibidipo · April 1, 2018, 8:28am

attachInterrupt(0,...);

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sleep working in attiny84 but error with attiny85?

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