oled-rpi-i2c-bus-async/tests/drawBitmap.js

Asynchronous NodeJS module for controlling oled devices on the Raspbery Pi (including the SSD1306 and SH1106 OLED screens)

import i2c from 'i2c-bus';
import SSD1306 from '../oled.mjs';
import { parseFile } from 'pngparse';
import path from 'path';

const HEIGHT = 64;
const WIDTH = 128;
const opts = {
	width: WIDTH,
	height: HEIGHT,
	address: 0x3c,
	bus: 3,
	driver: 'SH1106',
};

const initializeDisplay = async () => {
	try {
		const i2cBus = await i2c.openPromisified(opts.bus || 3);
		const oled = new SSD1306(i2cBus, opts);

		await oled.clearDisplay(true);
		const imageFile = path.join(
			__dirname,
			'../../resources',
			'icon_128x64_kiss.png'
		);

		parseFile(imageFile, async (err, image) => {
			if (err) {
				console.log(err.message);
				process.exit(1);
			}
			await oled.drawBitmap(image.data, true);
		});
	} catch (err) {
		console.log(err.message);
		process.exit(1);
	}
};

initializeDisplay();