'TCCR2A' was not declared in this scope

[TonderaiZR]

When trying to compile the code for the first time. I am receiving the error below.

Interrupt.ino: In function 'void interruptSetup()': Interrupt:17: error: 'TCCR2A' was not declared in this scope Interrupt:18: error: 'TCCR2B' was not declared in this scope Interrupt:19: error: 'OCR2A' was not declared in this scope Interrupt:20: error: 'TIMSK2' was not declared in this scope Interrupt.ino: At global scope: Interrupt:27: error: expected constructor, destructor, or type conversion before '(' token 'TCCR2A' was not declared in this scope

[biomurph]

What board are you trying to program?

[TonderaiZR]

Helllo

Thank you for the reply. So I changed my board to the right one. It works .

[deskool]

I'm getting the same error using the Lillypad Arduino USB - ATmega32U4 Board. Any tips on how to get around this?

Thanks,

[TonderaiZR]

Just make sure you have select the right board in arduino.

[biomurph]

Please confirm the board you are using, and the code you are using. That will help us solve your peroblem

[SavayaShinkaruk]

Interrupt:27: error: expected constructor, destructor, or type conversion before '(' token ISR(TIMER2_COMPA_vect){ // triggered when Timer2 counts to 124 ^ /Users/savayashinkaruk/Desktop/PulseSensor_Amped_Arduino-master/PulseSensorAmped_Arduino_1.5.0/Interrupt.ino: In function 'void interruptSetup()': Interrupt:17: error: 'TCCR2A' was not declared in this scope TCCR2A = 0x02; // DISABLE PWM ON DIGITAL PINS 3 AND 11, AND GO INTO CTC MODE ^ Interrupt:18: error: 'TCCR2B' was not declared in this scope TCCR2B = 0x06; // DON'T FORCE COMPARE, 256 PRESCALER ^ Interrupt:19: error: 'OCR2A' was not declared in this scope OCR2A = 0X7C; // SET THE TOP OF THE COUNT TO 124 FOR 500Hz SAMPLE RATE ^ Interrupt:20: error: 'TIMSK2' was not declared in this scope TIMSK2 = 0x02; // ENABLE INTERRUPT ON MATCH BETWEEN TIMER2 AND OCR2A ^ Interrupt:21: error: 'sei' was not declared in this scope sei(); // MAKE SURE GLOBAL INTERRUPTS ARE ENABLED ^ /Users/savayashinkaruk/Desktop/PulseSensor_Amped_Arduino-master/PulseSensorAmped_Arduino_1.5.0/Interrupt.ino: At global scope: Interrupt:27: error: expected constructor, destructor, or type conversion before '(' token ISR(TIMER2_COMPA_vect){ // triggered when Timer2 counts to 124 ^ Interrupt:36: error: expected unqualified-id before 'if' if(Signal < thresh && N > (IBI/5)*3){ // avoid dichrotic noise by waiting 3/5 of last IBI ^ exit status 1 expected constructor, destructor, or type conversion before '(' token

I am getting all these errors in my code. I am using a Feather MO - would that have anything to do with it?

[CunningLearner]

hey,I am using nodemcU and It doesn't compile.But is working fine with arduino uno and arduino nano. If I can use nodemcU with pulse sensor?

same_error

[biomurph]

@CunningLearner This code base has been superseded by the PulseSensor Playground library. https://github.com/WorldFamousElectronics/PulseSensorPlayground

We have not been able to use interrupts with the ESP8266. In this case, please work with the example sketch called BPM_Alternative.

I have not used nodemcU. Please start with Arduino, and then move to the nodemcU. If you get it working, please let us know!

[Abir-mishad]

Can I compile That code for AVR chip ( atmega8)?

[biomurph]

We compile down to the ATmega85 chip. This issue is closed. Please initiate a new issue and ask your question

[tangtangasia]

hello .. I have an error problem like this, ANYONE HELP ME PLEASE TT

esp32pulsesensorthingspeak:15:13: error: 'pulseSensor' was not declared in this scope int myBPM = pulseSensor.getBeatsPerMinute(); ^ esp32pulsesensorthingspeak:17:1: error: expected unqualified-id before 'if' if (myBPM < 100 && myBPM > 50) ^ Multiple libraries were found for "WiFi.h" Used: C:\Users\asus\Documents\ArduinoData\packages\esp32\hardware\esp32\1.0.4\libraries\WiFi Not used: C:\Program Files\WindowsApps\ArduinoLLC.ArduinoIDE_1.8.42.0_x86__mdqgnx93n4wtt\libraries\WiFi exit status 1 'pulseSensor' was not declared in this scope

and this is the code that I made, I use esp32 microcontroller, and pulse sensor. Where did I go wrong? I am just a beginner, please help me study.

define USE_ARDUINO_INTERRUPTS false

include

include

include

const char ssid[] = "mydream"; const char password[]= "12122234"; WiFiClient client;

const long CHANNEL = 1273034; const char *WRITE_API = "A3ZUCRHUSPNDSAR8W";

long prevMillisThingSpeak = 0; int intervalThingSpeak = 20000; int myBPM = pulseSensor.getBeatsPerMinute();

if (myBPM < 100 && myBPM > 50) if (millis() - prevMillisThingSpeak > intervalThingSpeak){ ThingSpeak.setField(1,myBPM);

int x = ThingSpeak.writeFields(CHANNEL, WRITE_API); if (x==200){ Serial.println ("Channel update seccessful.") } else{ Serial.println("Problem updating channel. HTTP error code "+String (x)); } prevMillisThingSpeak = millis(); } }

[biomurph]

@tangtangasia This is a repost of an issue that you put on another repo. You need to start with the beginning guide that we have on our website. Your code is not functional, because you don't do a bunch of things, including using the setup() and loop() functions. Start with the example sketches and go from there. I'm closing this issue as it is not germain to the original post. Please begin again, and before you do, start with the examples