Beginner advise on previously working code

hello, all. involved 2 years ago arduino coding , managed draft running. basic i2c, temp , rtc. want expand code pwm led control strange code.
there code:

code: [select]

---#include <time.h>
#include <wire.h>
#include <ds1307rtc.h>  // basic ds1307 library returns time time_t
#include <liquidcrystal_i2c.h>
#include <onewire.h>


int ds18s20_pin = 2;
onewire ds(ds18s20_pin);
liquidcrystal_i2c lcd(0x3f, 20, 4);


void setup(void)  {
  lcd.begin(20, 4);
  lcd.backlight();
  lcd.init();

  serial.begin(9600);
  setsyncprovider(rtc.get);   // function time rtc
  if(timestatus()!= timeset)
     serial.println("unable sync rtc");
  else
     serial.println("rtc has set system time");
   
}

void loop(void)
{
   digitalclockdisplay();
   delay(1000);
}
{
  float temperature = gettemp();
  serial.println(temperature);
  lcd.setcursor(0, 0);
  lcd.print("temp:");
  lcd.setcursor(5,0);
  lcd.print(temperature);
  lcd.setcursor(10, 0);
  lcd.print((char)223);
  lcd.setcursor(11, 0);
  lcd.print("c");
 
  delay(1000);
}


float gettemp(){
 

  byte data[12];
  byte addr[8];

  if ( !ds.search(addr)) {
     
      ds.reset_search();
      return -1000;
  }

  if ( onewire::crc8( addr, 7) != addr[7]) {
      serial.println("crc not valid!");
      return -1000;
  }

  if ( addr[0] != 0x10 && addr[0] != 0x28) {
      serial.print("device not recognized");
      return -1000;
  }

  ds.reset();
  ds.select(addr);
  ds.write(0x44,1); // start conversion, parasite power on @ end

  byte present = ds.reset();
  ds.select(addr);   
  ds.write(0xbe); // read scratchpad

 
  (int = 0; < 9; i++) { // need 9 bytes
    data[i] = ds.read();
  }
 
  ds.reset_search();
 
  byte msb = data[1];
  byte lsb = data[0];

  float tempread = ((msb << 8) | lsb); //using two's compliment
  float temperaturesum = tempread / 16;
 
  return temperaturesum;
 
}


void digitalclockdisplay(){
  // digital clock display of 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();
 
lcd.setcursor(0, 0);                                            // set lcd cursor position (column, row)
lcd.print(hour());
lcd.print(":");
lcd.print (minute());
lcd.print(":");
lcd.print(second());


// print text lcd
                                     // delay read text
                               // clear display

}

void printdigits(int digits){
  // utility function digital clock display: prints preceding colon , leading 0
  serial.print(":");
  if(digits < 10)
    serial.print('0');
  serial.print(digits);
}


--- end code ---


nice. link first answer helped me, still receiving same error on line 32. :)

drazzy:

--- code: ---void loop(void)
{
   digitalclockdisplay();
   delay(1000);
}   //here's the
{   //problem
  float temperature = gettemp();
  serial.println(temperature);
  lcd.setcursor(0, 0);
  lcd.print("temp:");
  lcd.setcursor(5,0);
  lcd.print(temperature);
  lcd.setcursor(10, 0);
  lcd.print((char)223);
  lcd.setcursor(11, 0);
  lcd.print("c");
 
  delay(1000);
}


why i'm receiving error on: lcd.int()?
has changed?
thank in advance cooperation

quote

why i'm receiving error on: lcd.int()?

because there's no such thing lcd.int?

was trouble post actual error message?

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