Amigos,

estou tentando usar as funções da biblioteca Time.h mas não consigo. 

Já baixei a biblioteca, coloquei na pasta "libraries",  

Quando executo o código, por exemplo, só pra testar a função :

#include <Time.h>  

void setup()  {
  Serial.begin(9600);
}

void loop(){    
      digitalClockDisplay();  
}

void digitalClockDisplay(){
  // digital clock display of the time
  Serial.print(hour());
  printDigits(minute());
  printDigits(second());
  Serial.print(" ");
  Serial.print(day());
  Serial.print(" ");
  Serial.print(month());
  Serial.print(" ");
  Serial.print(year());
  Serial.println();
}

Aparece os erros:

sketch_mar10a.ino: In function ‘void digitalClockDisplay()’:
sketch_mar10a:16: error: ‘hour’ was not declared in this scope
sketch_mar10a:17: error: ‘minute’ was not declared in this scope
sketch_mar10a:17: error: ‘printDigits’ was not declared in this scope
sketch_mar10a:18: error: ‘second’ was not declared in this scope
sketch_mar10a:20: error: ‘day’ was not declared in this scope
sketch_mar10a:22: error: ‘month’ was not declared in this scope
sketch_mar10a:24: error: ‘year’ was not declared in this scope

ou seja, não está enxergando nenhuma função de Time.h

Estou no LINUX UBUNTU ...