Arduino library not working, can't find header

Question

I have fair experience with C/C++ so I decided to have a go at writing my first simple Arduino library. I wrote the code which seems to be fine to me except that it keeps complaining about the header file not found during compilation:

/home/me/sketchbook/libraries/SegDisplay/SegDisplay.cpp:1:24: fatal error: SegDispaly.h: No such file or directory
 #include "SegDispaly.h"
 ^
compilation terminated.

I have the library located in my sketch folder under the name "SegDisplay":

/home/me/sketchbook/libraries/
└── SegDisplay
  ├── examples
  ├── keywords.txt
  ├── README.md
  ├── SegDisplay.cpp
  └── SegDisplay.h

and here's the code:

SegDisplay.h:

#ifndef _SEVEN_SEG_H_
#define _SEVEN_SEG_H_
#include <math.h>
#if defined(ARDUINO) && (ARDUINO >= 100)
#include <Arduino.h>
#else
#include <WProgram.h>
#endif
class SegDisplay
{
public:
 SegDisplay (int clockPin, int latchPin, int dataPin, int digitPins[4]);
 void display (double value);
private:
 const int digitPins[4];
 const int clockPin;
 const int latchPin;
 const int dataPin;
 const byte digit[10] = //seven segment digits in bits
 {
 B00111111, //0
 B00000110, //1
 B01011011, //2
 B01001111, //3
 B01100110, //4
 B01101101, //5
 B01111101, //6
 B00000111, //7
 B01111111, //8
 B01101111 //9
 };
 int digitBuffer[4];
 void setRegisterData (byte data);
 void clearRegister();
 void clearDisplay();
 void updateDisplay();
};
#endif

SegDisplay.cpp:

#include "SegDispaly.h"
SegDisplay::SegDisplay (int a, int b, int c, int d[4]):
 clockPin (a), latchPin (b), dataPin (c), digitPins (d), digitBuffer ({0})
{
 for (int i = 0; i < 4; i++)
 {
 pinMode (digitPins[i], OUTPUT);
 digitalWrite (digitPins[i], HIGH);
 }
 pinMode (latchPin, OUTPUT);
 pinMode (clockPin, OUTPUT);
 pinMode (dataPin, OUTPUT); 
}
void SegDispaly::setRegisterData (byte data)
{
 digitalWrite (latchPin, LOW); 
 shiftOut (dataPin, clockPin, MSBFIRST, data);
 digitalWrite (latchPin, HIGH);
}
void SegDispaly::clearRegister()
{
 setRegisterData (B00000000);
}
void SegDispaly::clearDisplay()
{
 // deactivate transistors
 for (int n = 0; n < 4; n++) digitalWrite (digitPins[n], HIGH);
}
//writes the temperature on display
void SegDispaly::updateDisplay()
{
 byte outByte;
 // dispaly digits
 for (int i = 0; i < 4; i++)
 {
 clearDisplay();
 clearRegister();
 // enable nth cell cathode (transistor)
 digitalWrite (digitPins[i], LOW); 
 // output nth digit on display
 if (i == 1)
 {
 //print the decimal point on the 2nd digit
 outByte = digit[digitBuffer[i]] | B10000000;
 }
 else outByte = digit[digitBuffer[i]];
 setRegisterData (outByte);
 //delayMicroseconds (500);
 delay (5);
 //Serial.print (outByte, BIN);
 //if (i == 3)
 //{
 // Serial.println (".");
 //}
 //else Serial.print (", ");
 }
}
void SegDispaly::display (double value)
{
 int n = int (value * 100);
 digitBuffer[0] = n / 1000;
 digitBuffer[1] = (n % 1000) / 100;
 digitBuffer[2] = (n % 100) / 10;
 digitBuffer[3] = (n % 100) % 10;
 updateDisplay();
}

My target AVR is Arduino Uno R3, the code used to work fine in a sketch before I decided to create a library out of it. Any help would be greatly appreciated. thanks in advance.

Answer 1

You spelled the header filename wrong:

#include "SegDispaly.h"

should be:

#include "SegDisplay.h"

You have also made the same mistake in the class name multiple places in SegDisplay.cpp.

• user7342539: you know I checked the spelling of SegDisplay several times and couldn't spot it for some reason, I must be going blind. Thanks