oled-rpi-i2c-bus-async/tests/writeString.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 font from 'oled-font-pack';

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);

		await oled.setCursor(10, 0);
		await oled.writeString(font.oled_5x7, 1, 'Hello', 1, false, false);
		await oled.setCursor(10, 10);
		await oled.writeString(font.oled_5x7, 2, 'Hello', 1, false, false);
		await oled.setCursor(10, 40);
		await oled.writeString(font.oled_3x5, 1, 'Hello', 1, false, false);
		await oled.setCursor(10, 50);
		await oled.writeString(font.oled_3x5, 2, 'Hello', 1, false, false);
		await oled.setCursor(70, 40);
		await oled.writeString(font.oled_3x5, 3, 'Hello', 1, false, true);
	} catch (err) {
		console.log(err.message);
		process.exit(1);
	}
};

initializeDisplay();