lcd_init()
-> clear display
-> set cursor home
-> disable cursor
-> turn backlight on
lcd_clear()
-> clear display
lcd_setBrightness(val)
-> set brightness to val(0-255)
lcd_setContrast(val)
-> set contrast to val(0-255)
lcd_home()
-> set cursor to home
lcd_setCursor(l,c)
-> set cursor to (l,c) l(1-2) / c(1-16)
lcd_backLight(flag)
-> in case flag true turn on light
-> in case flag false turn off light
lcd_noCursor()
-> disable cursor
lcd_cursorOn()
-> enable cursor
lcd_print(message,line,adjust)
-> string message
-> int line
-> adjust("center","left","right")