LCD.py

#!/usr/bin/env python3

from hardware_modules.PCF8574 import PCF8574_GPIO
from hardware_modules.Adafruit_LCD1602 import Adafruit_CharLCD

from time import sleep, strftime
from datetime import datetime

PCF8574_address = 0x27  # I2C address of the PCF8574 chip.
PCF8574A_address = 0x3F  # I2C address of the PCF8574A chip.

class LCD():
    def __init__(self):
        # Create PCF8574 GPIO adapter.
        try:
            self.mcp = PCF8574_GPIO(PCF8574_address)
        except:
            try:
                self.mcp = PCF8574_GPIO(PCF8574A_address)
            except:
                print ('I2C Address Error !')
                exit(1)
        self.mcp.output(3,1)     # turn on LCD backlight
        self.isOn = True         # LCD will be on unless you call lightOff()

        self.lcd = Adafruit_CharLCD(pin_rs=0, pin_e=2, pins_db=[4,5,6,7], GPIO=self.mcp)
        self.lcd.begin(16,2)     # set number of LCD lines and columns
        self.isLoop = True       # control the flow of the program

    def getLcdStatus(self):
        return self.isOn

    def get_time_now(self):     # get system time
        return datetime.now().strftime('    %H:%M:%S')

    def setLoop(self, isLoop):
        self.isLoop = isLoop
    
    def getLoop(self):
        return self.isLoop

    def busy(self):
        self.lcd.clear()
        while(self.isLoop):
            self.lcd.setCursor(0,0)  # set cursor position
            self.lcd.message("      BUSY     \n")
            self.lcd.message( self.get_time_now() )   # display the time
            sleep(1)

    def dnd(self):
        self.lcd.clear()
        while(self.isLoop):
            self.lcd.setCursor(0,0)  # set cursor position
            self.lcd.message(" DO NOT DISTURB\n")
            self.lcd.message( self.get_time_now() )   # display the time
            sleep(1)

    def brb(self):
        self.lcd.clear()
        while(self.isLoop):
            self.lcd.setCursor(0,0)  # set cursor position
            self.lcd.message("  BE RIGHT BACK\n")
            self.lcd.message( self.get_time_now() )   # display the time
            sleep(1)

    def away(self):
        self.lcd.clear()
        while(self.isLoop):
            self.lcd.setCursor(0,0)  # set cursor position
            self.lcd.message("      AWAY     \n")
            self.lcd.message( self.get_time_now() )   # display the time
            sleep(1)

    def available(self):
        self.lcd.clear()
        while(self.isLoop):
            self.lcd.setCursor(0,0)  # set cursor position
            self.lcd.message("    AVAILABLE  \n")
            self.lcd.message( self.get_time_now() )   # display the time
            sleep(1)

    def presenting(self):
        self.lcd.clear()
        while(self.isLoop):
            self.lcd.setCursor(0,0)  # set cursor position
            self.lcd.message("   PRESENTING  \n")
            self.lcd.message( self.get_time_now() )   # display the time
            sleep(1)
            self.lcd.setCursor(0,0)  # set cursor position
            self.lcd.message("               \n")
            sleep(1)

    def inAcall(self):
        self.lcd.clear()
        while(self.isLoop):
            self.lcd.setCursor(0,0)  # set cursor position
            self.lcd.message("    IN A CALL  \n")
            self.lcd.message( self.get_time_now() )   # display the time
            sleep(1)
            self.lcd.setCursor(0,0)  # set cursor position
            self.lcd.message("               \n")
            sleep(1)

    def offline(self):
        self.lcd.clear()
        while(self.isLoop):
            self.lcd.setCursor(0,0)  # set cursor position
            self.lcd.message("     OFFLINE   \n")
            self.lcd.message( self.get_time_now() )   # display the time
            sleep(1)
    
    def msg(self, otherMessage, clockOn=True):
        self.lcd.clear()
        while(self.isLoop):
            self.lcd.setCursor(0,0)
            if len(otherMessage) > 15:
                self.lcd.message(otherMessage[:15] + '\n')
            elif len(otherMessage) < 10:
                self.lcd.message("  " + otherMessage + ' \n')
            else:
                self.lcd.message(otherMessage + '\n')
            if clockOn:
                self.lcd.message( self.get_time_now() )   # display the time
            else:
                self.lcd.message("               \n")
            sleep(1)

    def destroy(self):
        self.setLoop = False
        self.lcd.clear()
        self.mcp.output(3,0)     # turn off LCD backlight
        self.isOn = False

    def lightOn(self):
        self.mcp.output(3,1)     # turn on LCD backlight
        self.isOn = True
        self.setLoop = True