Arduino error codes on adafruit codes

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ecolights
 
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Joined: Wed Sep 12, 2018 4:42 pm

Arduino error codes on adafruit codes

Post by ecolights »

I copied and pasted this code from Adafruits and I received a few error codes. But I have no idea how to fix them!

The ones I get are
error: expected constructor, destructor, or type conversion before '(' token

ISR(TIMER2_COMPA_vect){ // triggered when Timer2 counts to 124

This is the lines above it (and including the error line)


void interruptSetup(){
// Initializes Timer2 to throw an interrupt every 2mS.
TCCR2A = 0x02; // DISABLE PWM ON DIGITAL PINS 3 AND 11, AND GO INTO CTC MODE
TCCR2B = 0x06; // DON'T FORCE COMPARE, 256 PRESCALER
OCR2A = 0X7C; // SET THE TOP OF THE COUNT TO 124 FOR 500Hz SAMPLE RATE
TIMSK2 = 0x02; // ENABLE INTERRUPT ON MATCH BETWEEN TIMER2 AND OCR2A
sei(); // MAKE SURE GLOBAL INTERRUPTS ARE ENABLED
}

// THIS IS THE TIMER 2 INTERRUPT SERVICE ROUTINE.
// Timer 2 makes sure that we take a reading every 2 miliseconds
ISR(TIMER2_COMPA_vect){ // triggered when Timer2 counts to 124

Help please and sorry for taking your time

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adafruit_support_bill
 
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Re: Arduino error codes on adafruit codes

Post by adafruit_support_bill »

Please post the complete error message and a link to the code you are trying to compile.

Also please tell us what processor you are compiling this for.

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ecolights
 
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Re: Arduino error codes on adafruit codes

Post by ecolights »

Hello thank you for your help.
Here is the information you requested

Code error message:
Arduino: 1.8.7 (Windows Store 1.8.15.0) (Windows 10), Board: "Adafruit Feather M0"

Frank_Vice:45:5: error: expected constructor, destructor, or type conversion before '(' token

ISR(TIMER2_COMPA_vect){ // triggered when Timer2 counts to 124

^

C:\Users\hp\Documents\Arduino\Frank_Vice\Frank_Vice.ino: In function 'void interruptSetup()':

Frank_Vice:36:3: error: 'TCCR2A' was not declared in this scope

TCCR2A = 0x02; // DISABLE PWM ON DIGITAL PINS 3 AND 11, AND GO INTO CTC MODE

^

Frank_Vice:37:3: error: 'TCCR2B' was not declared in this scope

TCCR2B = 0x06; // DON'T FORCE COMPARE, 256 PRESCALER

^

Frank_Vice:38:3: error: 'OCR2A' was not declared in this scope

OCR2A = 0X7C; // SET THE TOP OF THE COUNT TO 124 FOR 500Hz SAMPLE RATE

^

Frank_Vice:39:3: error: 'TIMSK2' was not declared in this scope

TIMSK2 = 0x02; // ENABLE INTERRUPT ON MATCH BETWEEN TIMER2 AND OCR2A

^

Frank_Vice:40:7: error: 'sei' was not declared in this scope

sei(); // MAKE SURE GLOBAL INTERRUPTS ARE ENABLED

^

C:\Users\hp\Documents\Arduino\Frank_Vice\Frank_Vice.ino: At global scope:

Frank_Vice:45:4: error: expected constructor, destructor, or type conversion before '(' token

ISR(TIMER2_COMPA_vect){ // triggered when Timer2 counts to 124

^

exit status 1
expected constructor, destructor, or type conversion before '(' token

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.

Here is the code I am trying to use: https://learn.adafruit.com/pulse-sensor ... s/the-code

I am using Arduino IDE for my feather MO basic

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adafruit_support_bill
 
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Re: Arduino error codes on adafruit codes

Post by adafruit_support_bill »

Arduino: 1.8.7 (Windows Store 1.8.15.0) (Windows 10), Board: "Adafruit Feather M0"
That code was written for an Arduino UNO - or other Atmega 328 based processor. The ISR, TCCRxx, OCRxx and TIMSKxx identifiers all refer to Atmega 328-specific timer and interrupt functions. These do not exist on M0-based processors.

To run this code you will need to use an Atmega 328 - based processor such as the ones specified in the guide: https://learn.adafruit.com/pulse-sensor ... he-circuit

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