Method constructor

modules/drivers/it8951/it8951.js:105–150

()

	_setArea = new Uint16Array(this._updateArea.buffer, 0, 5);

	constructor() {
		const Digital = device.io.Digital;
		const SPI = device.io.SPI;

		this.select = new Digital({
			pin: device.pin.epdSelect,
			mode: Digital.Output,
			initialValue: 1
		});

		this.busy = new Digital({
			pin: device.pin.epdBusy,
			mode: Digital.Input,
		});

		this.spi = new SPI({
			...device.SPI.default,
			hz: 10_000_000
		});
		this.spi.buffer16 = new Uint8Array(2);
		this.spi.write16 = function(value) {
			const buffer = this.buffer16;
			buffer[0] = value >> 8;
			buffer[1] = value;
			this.write(buffer);
		}; 
		this.spi.transfer16 = function(value) {
			const buffer = this.buffer16;
			buffer[0] = value >> 8;
			buffer[1] = value;
			this.transfer(buffer);
			return (buffer[0] << 8) | buffer[1];
		}; 

		this.getSysInfo();

		this.writeCommand(IT8951_TCON_SYS_RUN);
		this.writeRegister(IT8951_I80CPCR, 0x0001); // enable pack write

		//set vcom to -2.30v
		this.writeCommand(IT8951_I80_CMD_VCOM);
		this.writeWord(0x0001);
		this.writeWord(2300);

		Timer.delay(1000);
	}
	close() {
		this.spi?.close();
		this.select?.close();