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If the Library as you -received it does not specify a version number of the GNU Lesser -General Public License, you may choose any version of the GNU Lesser -General Public License ever published by the Free Software Foundation. - - If the Library as you received it specifies that a proxy can decide -whether future versions of the GNU Lesser General Public License shall -apply, that proxy's public statement of acceptance of any version is -permanent authorization for you to choose that version for the -Library. diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..0bbc933 --- /dev/null +++ b/Makefile @@ -0,0 +1,10 @@ +HOST=i2c@10.0.0.11 + +build: dist/index.mjs + +deploy: build + ssh $(HOST) "if [ -d dist ]; then rm -r dist; fi" + scp -r dist $(HOST):~/dist + +dist/index.mjs: index.mjs + npx esbuild $^ --format=esm --external:i2c-bus --external:systeminformation --minify --bundle --platform=node --outfile=$@ diff --git a/index.mjs b/index.mjs index 515d117..da4c7a5 100644 --- a/index.mjs +++ b/index.mjs @@ -1,141 +1,32 @@ -import i2c from 'i2c-bus'; +import { LCD } from '@sek1ro/i2c-lcd' +import si from 'systeminformation' -function sleep(ms) { - return new Promise(resolve => setTimeout(resolve, ms)) +const lcd = new LCD(1, 0x27) +await lcd.open() + +async function showSystemStats() { + const [cpu, mem, temp] = await Promise.all([ + si.currentLoad(), + si.mem(), + si.cpuTemperature(), + ]); + + const cpuLoad = cpu.currentLoad.toFixed(1); + const totalMem = (mem.total / 1024 ** 2).toFixed(0); + const usedMem = ((mem.total - mem.available) / 1024 ** 2).toFixed(0); + const tempC = temp.main?.toFixed(1) ?? 'N/A'; + + await lcd.send(LCD.ClearDisplay()) + + await lcd.jump(0, 0); + await lcd.sendString(`${cpuLoad}%`); + + await lcd.jump(8, 0); + await lcd.sendString(`${tempC}C`) + + await lcd.jump(0, 1); + await lcd.sendString(`${usedMem}/${totalMem} MB`); } -const ROW_OFFSET = [0x00, 0x40, 0x14, 0x54] - -export class LCD { - font_size = 8 - lines = 2 - backlight = true - - #device - #addr - #bus - - constructor (device, addr) { - this.#device = device - this.#addr = addr - } - - async open() { - this.#bus = await i2c.openPromisified(this.#device) - - for (let i = 0; i < 3; i++) { - await this.sendByte(0x30) - await sleep(1) - } - - await this.sendByte(0x20) - await sleep(1) - - await this.send(LCD.FunctionSet(4, this.lines, this.font_size)) - await this.send(LCD.DisplayOnOff(true, false, false)) - await this.send(LCD.EntryModeSet('right', false)) - await this.send(LCD.ClearDisplay()) - } - - async sendString(str) { - for (let i = 0; i < str.length; i++) { - await this.send(LCD.WriteData(str.charCodeAt(i))) - } - } - - async jump(col, row) { - col %= 20 - row = ROW_OFFSET[row % 4] - - await this.send(LCD.SetDDRamAddr(row | col)) - } - - async close() { - await this.#bus.close() - } - - //RS RW D7 D6 D5 D4 D3 D2 D1 D0 - //D7 D6 D5 D4 BL EN RW RS - async send(instruction) { - const RS = (instruction.value & 0x200) >>> 9 - const BL = (this.backlight ? 1 : 0) << 3 - const RW = (instruction.value & 0x100) >>> 7 - const D74 = (instruction.value & 0x0F0) - const D30 = (instruction.value & 0x00F) << 4 - - await this.sendByte(D74 | BL | RS | RW) - await this.sendByte(D30 | BL | RS | RW) - await sleep(instruction.delay) - } - - async sendByte(byte) { - await this.writeByte(byte) - await this.writeByte(byte | 4) - await this.writeByte(byte) - } - - async writeByte(byte) { - await this.#bus.i2cWrite(this.#addr, 1, Buffer.from([byte])) - } -} - -Object.defineProperties(LCD, { - ClearDisplay: { value: function() { - return { - value: 0x1, - delay: 2, - } - } }, - EntryModeSet: { value: function(direction, display_shift) { - const I_Direction = (direction == 'right' ? 1 : 0) << 1 - const Shift = (display_shift ? 1 : 0) - - return { - value: 0x4 | I_Direction | Shift, - delay: 1, - } - } }, - DisplayOnOff: { value: function(display, cursor, cursor_position) { - const Display = (display ? 1 : 0) << 2 - const Cursor = (cursor ? 1 : 0) << 1 - const Cursor_Position = (cursor_position ? 1 : 0) - - return { - value: 0x8 | Display | Cursor | Cursor_Position, - delay: 1, - } - } }, - CursorDisplayShift: { value: function(target, direction) { - const Screen_Cursor = (target == 'display' ? 1 : 0) << 3 - const Right_Left = (direction == 'right' ? 1 : 0) << 2 - - return { - value: 0x10 | Screen_Cursor | Right_Left, - delay: 1, - } - } }, - FunctionSet: { value: function(data_length, number_of_lines, font_size) { - const Data_Length = (data_length == 8 ? 1 : 0) << 4 - const Number_of_lines = (number_of_lines == 2 ? 1 : 0) << 3 - const Font_size = (font_size == 11 ? 1 : 0) << 2 - - return { - value: 0x20 | Data_Length | Number_of_lines | Font_size, - delay: 1, - } - } }, - SetDDRamAddr: { value: function(address) { - address &= 0x7F - return { - value: 0x80 | address, - delay: 1, - } - } }, - WriteData: { value: function(byte) { - byte &= 0xFF - return { - value: 0x200 | byte, - delay: 1, - } - } }, -}) +await showSystemStats() +setInterval(showSystemStats, 1000) diff --git a/package-lock.json b/package-lock.json index e182f68..bd50049 100644 --- a/package-lock.json +++ b/package-lock.json @@ -1,443 +1,25 @@ { - "name": "@sek1ro/i2c-lcd", - "version": "0.1.0", + "name": "i2c-lcd", + "version": "1.0.0", "lockfileVersion": 3, "requires": true, "packages": { "": { - "name": "@sek1ro/i2c-lcd", + "name": "i2c-lcd", + "version": "1.0.0", + "license": "ISC", + "dependencies": { + "@sek1ro/i2c-lcd": "^0.1.0", + "systeminformation": "^5.27.7" + } + }, + "node_modules/@sek1ro/i2c-lcd": { "version": "0.1.0", + "resolved": "https://git.sek1.ro/api/packages/sek1ro/npm/%40sek1ro%2Fi2c-lcd/-/0.1.0/i2c-lcd-0.1.0.tgz", + "integrity": "sha512-HqV4fpnzzVoPDmy91fWyZMR2tARpXFUP2djQYFaO+RzqeOVvnjKukyw4vpCm6u7czFieXLezoo/qrg45WMqGEQ==", "license": "LGPL-3.0-only", "dependencies": { "i2c-bus": "^5.2.3" - 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"name": "@sek1ro/i2c-lcd", - "version": "0.1.0", - "description": "wrapper for i2c lcd", - "license": "LGPL-3.0-only", - "author": "Vlad Litvinov ", + "name": "i2c-lcd", + "version": "1.0.0", + "description": "", + "license": "ISC", + "author": "", "type": "module", - "main": "index.mjs", - "dependencies": { - "i2c-bus": "^5.2.3" + "main": "index.js", + "scripts": { + "test": "echo \"Error: no test specified\" && exit 1" }, - "devDependencies": { - "esbuild": "^0.25.5" + "dependencies": { + "@sek1ro/i2c-lcd": "^0.1.0", + "systeminformation": "^5.27.7" } }