A
Arduino•5d ago
¬NichtBen

Why do I get this "function not declared in this scope" error?

Hello everyone, I'm still kinda new to Arduino, but I thought that I at least knew the basics to work with it for a school project of mine, however, when trying t compile my project, I just got this Error and I really don't know why:
5 Replies
¬NichtBen
¬NichtBenOP•5d ago
SSSurfer\SSSurfer.ino: In function 'void loop()':
SSSurfer\SSSurfer.ino:18:3: error: 'delayCheck' was not declared in this scope
   delayCheck(5000, 1000, 505, 328);
   ^~~~~~~~~~
SSSurfer\SSSurfer.ino:18:3: note: suggested alternative: 'delay'
   delayCheck(5000, 1000, 505, 328);
   ^~~~~~~~~~
   delay
SSSurfer\SSSurfer.ino:20:7: error: 'inRange' was not declared in this scope
   if (inRange(analogRead(buttonPin), 505)) {
       ^~~~~~~
exit status 1

Compilation error: 'delayCheck' was not declared in this scope
SSSurfer\SSSurfer.ino: In function 'void loop()':
SSSurfer\SSSurfer.ino:18:3: error: 'delayCheck' was not declared in this scope
   delayCheck(5000, 1000, 505, 328);
   ^~~~~~~~~~
SSSurfer\SSSurfer.ino:18:3: note: suggested alternative: 'delay'
   delayCheck(5000, 1000, 505, 328);
   ^~~~~~~~~~
   delay
SSSurfer\SSSurfer.ino:20:7: error: 'inRange' was not declared in this scope
   if (inRange(analogRead(buttonPin), 505)) {
       ^~~~~~~
exit status 1

Compilation error: 'delayCheck' was not declared in this scope
I've got two relevant tabs within my project, and I find it strange that it complains about delayCheck and inRange, but not about IdleAnimation for example, despite being declared in the same tab: SSSurfer.ino: 
#include <LedControl.h>
const int buttonPin = A5;

LedControl lc = LedControl(12, 11, 10, 1); //DIN, CLK, CS, # of Displays connected

void setup() {
  Serial.begin(9600);
  randomSeed(analogRead(0));
  
  lc.shutdown(0, false);
  lc.setIntensity(0, 1);   // brightness 0–15
  lc.clearDisplay(0);
}

void loop() {
  idleAnimation();
  delayCheck(5000, 1000, 505, 328);

  if (inRange(analogRead(buttonPin), 505)) {
    lc.clearDisplay(0);
    delay(3000);
    ssGame();
  }
  else if (inRange(analogRead(buttonPin), 328)) {
    lc.clearDisplay(0);
    delay(3000);
    subwayGame();
  }
}
#include <LedControl.h>
const int buttonPin = A5;

LedControl lc = LedControl(12, 11, 10, 1); //DIN, CLK, CS, # of Displays connected

void setup() {
  Serial.begin(9600);
  randomSeed(analogRead(0));
  
  lc.shutdown(0, false);
  lc.setIntensity(0, 1);   // brightness 0–15
  lc.clearDisplay(0);
}

void loop() {
  idleAnimation();
  delayCheck(5000, 1000, 505, 328);

  if (inRange(analogRead(buttonPin), 505)) {
    lc.clearDisplay(0);
    delay(3000);
    ssGame();
  }
  else if (inRange(analogRead(buttonPin), 328)) {
    lc.clearDisplay(0);
    delay(3000);
    subwayGame();
  }
}
funktionen.ino: 
void idleAnimation() {
  int i = random(1, 4);

  if (i == 1) {
    idleTalking();
  }
  if (i == 2) {
    idleLooking();
  }
  if (i == 3) {
    idleTurning();
  }
}

bool inRange(int input, int target, int range = 10) {
  return  (input > target - range && input < target + range);
}

void delayCheck(int time, int checkAmount, int buttonA, int buttonB = -1, int buttonC = -1, int buttonD = -1, int buttonE = -1) {
  for (int i = 0; i < checkAmount; i++) {
    delay(time / checkAmount);

    int readValue = analogRead(buttonPin);
    
    if (inRange(readValue, buttonA)) return;

    if (readValue != -1 && inRange(readValue, buttonB)) return;
    if (readValue != -1 && inRange(readValue, buttonC)) return;
    if (readValue != -1 && inRange(readValue, buttonD)) return;
    if (readValue != -1 && inRange(readValue, buttonE)) return;
  }
}
void idleAnimation() {
  int i = random(1, 4);

  if (i == 1) {
    idleTalking();
  }
  if (i == 2) {
    idleLooking();
  }
  if (i == 3) {
    idleTurning();
  }
}

bool inRange(int input, int target, int range = 10) {
  return  (input > target - range && input < target + range);
}

void delayCheck(int time, int checkAmount, int buttonA, int buttonB = -1, int buttonC = -1, int buttonD = -1, int buttonE = -1) {
  for (int i = 0; i < checkAmount; i++) {
    delay(time / checkAmount);

    int readValue = analogRead(buttonPin);
    
    if (inRange(readValue, buttonA)) return;

    if (readValue != -1 && inRange(readValue, buttonB)) return;
    if (readValue != -1 && inRange(readValue, buttonC)) return;
    if (readValue != -1 && inRange(readValue, buttonD)) return;
    if (readValue != -1 && inRange(readValue, buttonE)) return;
  }
}
AnonEngineering
AnonEngineering•5d ago
Put your functions into a functions.h (not an ino) file, then #include that file in the main sketch. Then it compiles (until it complains about functions you don't have listed above 🙂 )
¬NichtBen
¬NichtBenOP•5d ago
I assume it's not as easy as to just change the file extension from .ino to .h, right? Also how come that this issue is only popping up now, I have a bunch of different tabs in my project, and this is the first time that I got this. I used different functions across mutiple tabs a bunch of times now.
AnonEngineering
AnonEngineering•4d ago
should be able to simply rename the tab
jim lee
jim lee•3d ago
There's no #include for it anyway.

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