I'm trying to make a library but it doesn't work

Projects Programming
1 
----------------------ARDUINO CODE--------------------------

#include <Sensor_Ultrassom.h>

Sensor_Ultrassom ultrassom(3,4);

float dist_cm, dist_m;

void setup() {
}

void loop() {     
}








--------------------SENSOR_ULTRASSOM.H----------------

#ifndef SENSOR_ULTRASSOM_H
#define SENSOR_ULTRASSOM_H

#include <Arduino.h>

class Sensor_Ultrassom
      {
public:
      Sensor_Ultrassom(char pt, char pe);
      double distancia_cm();	  
private:      	
      char pino_trigger;
      char pino_echo;
      }
#endif



--------------------SENSOR_ULTRASSOM.CPP----------------

#include <Sensor_Ultrassom.h>

Sensor_Ultrassom::Sensor_Ultrassom(char pt, char pe){
	   this->pino_trigger=pt;
	   this->pino_echo=pe;
	   pinMode(pino_trigger,OUTPUT);
	   pinMode(pino_echo, INPUT);
}

double Sensor_Ultrassom::distancia_cm(){
	   unsigned long microsegundos; 
	   double distancia_cm;
	   digitalWrite(pino_trigger,LOW);
	   delayMicroseconds(2);
	   digitalWrite(pino_trigger, HIGH);
	   delayMicroseconds(10);
	   digitalWrite(pino_trigger, LOW);
	   microsegundos=pulseIn(pino_echo,HIGH);
	   distancia_cm=(microsegundos*0.0343)/2.0;
	   if(distancia_cm==0 || distancia>400)
	     {
	     return -1.0;	
		 }
	   else
	     {
	     return distancia_cm;	
		 } 	   
}




-----------------------KEYWORDS.TXT----------------------

#Keyword para a classe
Sensor_Ultrassom KEYWORD1

#Keyword para métodos
distancia_cm  KEYWORD2
2

I think you're missing a semicolon after the } in the .h file.

3

GypsumFantastic, you were right, the * .H file was missing a semicolon. It's working now, but the function's reserved words aren't getting highlighted. Can you tell me why?

4

neraildes:
It's working now, but the function's reserved words aren't getting highlighted. Can you tell me why?

Because they don't appear in a keywords file?

5

TheMemberFormerlyKnownAsAWOL:
Because they don't appear in a keywords file?

Yes, they do.

-----------------------KEYWORDS.TXT----------------------

#Keyword para a classe
Sensor_Ultrassom KEYWORD1

#Keyword para métodos
distancia_cm KEYWORD2

"Sensor_Ultrassom" and "distancia_cm" do not stand out.

The file name is keywords.txt.

6

Do you have to restart the IDE?

(I mostly ignore colouring - it isn't important)

7

you need a TAB between keyword and type not blanks ...
By the way, sparkfun has a nice tutorial How to wite a great Arduino library - follow the deep links!

8

per1234 here making the promised visit!

Here's some additional information on the format of the keywords.txt file:
https://arduino.github.io/arduino-cli/latest/library-specification/#keywordstxt-format

9

Thanks, there were really blanks between the words, I put TAB and it worked. Thanks for the link and the tip.