raspberrypi_nodejs_projects/libs/lcd.js

const LCD = require('raspberrypi-liquid-crystal');
const common = require('./common')
const globalVars = require('./globalVars')
const clock = require('./clock');
var commaNumber = require('comma-number')

const lcd = new LCD(1, 0x27, 20, 4);

lcd.beginSync();

module.exports = {
    clearScreen: async () => {
        lcd.clearSync();
    },
    clearLine: async (line) => {
        line = line - 1
        lcd.setCursorSync(0, line);
        lcd.printSync('                    ')
    },
    intro: async () => {
        lcd.clearSync();
        lcd.printLineSync(1, 'House Status')
        lcd.setCursorSync(13, 2);
        lcd.printSync('By Karl')
        await common.pause(3000)
        lcd.clearSync();
    },
    heading: async (title) => {
        lcd.setCursorSync(0, 0);
        lcd.printSync(title)
    },
    time: async () => {
        let t = new Date().toUTCString()
        console.log(t + ' get time')
        lcd.setCursorSync(15, 0);
        lcd.printSync(await clock.time())
    },
    waterStatus: async (input) => {
        lcd.printLineSync(2, 'Water=')
        lcd.setCursorSync(6, 2);
        lcd.printSync('                    ')
        lcd.setCursorSync(6, 2);
        lcd.printSync(input)
    },
    heatingStatus: async (input) => {
        lcd.printLineSync(2, 'Heating=')
        lcd.setCursorSync(8, 2);
        lcd.printSync('            ')
        lcd.setCursorSync(8, 2);
        lcd.printSync(input)
    },
    NextEvent: async (input) => {
        if (input === 'Not Set') {
            lcd.setCursorSync(0, 3)
            lcd.printSync("Always Off")
        } else {
            if (globalVars.waterOn === "true") {
                lcd.setCursorSync(0, 3)
                lcd.printSync("Switch Off=")
                lcd.setCursorSync(11, 3);
                lcd.printSync('         ')
                lcd.setCursorSync(11, 3);
                lcd.printSync(input)
            } else {
                lcd.setCursorSync(0, 3)
                lcd.printSync("Switch On=")
                lcd.setCursorSync(10, 3);
                lcd.printSync('         ')
                lcd.setCursorSync(10, 3);
                lcd.printSync(input)
            }
        }
    },
    currentRoomTemp: async (temp) => {
        lcd.printLineSync(2, 'Current Temp:' + temp + '\xDF')
    },
    lastSetTemp: async (temp) => {
        lcd.printLineSync(3, 'Last Set Temp:' + temp + '\xDF')
    },
    heatingPageOne: async (heatingStatus, heatingNextEvent) => {
        await module.exports.NextEvent(heatingNextEvent)
        await module.exports.heatingStatus(heatingStatus)
    },
    heatingPageTwo: async (measuredRoomTemp, lastTimerSetPoint) => {
        await module.exports.currentRoomTemp(measuredRoomTemp)
        await module.exports.lastSetTemp(lastTimerSetPoint)
    },
    waterPageOne: async (waterStatus, waterNextEvent) => {
        await module.exports.NextEvent(waterNextEvent)
        await module.exports.waterStatus(waterStatus)
    },
    piHolePage: async (domainsBeingBlocked, queriesToday, queriesBlockedToday, percentageBlocked) => {
        lcd.printLineSync(2, 'Queries=' + commaNumber(queriesToday))
        lcd.printLineSync(3, 'Blocked=' + commaNumber(queriesBlockedToday) + ' (' + percentageBlocked.toFixed() + '%)')
    }
}