teensy-loader.js

This is a JavaScript library to upload firmware to Teensy-powered devices, without calling out to any external tools. It currently only supports atmega32u4-based teensies.

Usage

import TeensyLoader from "teensy-loader";

const device = TeensyLoader.open(0x16c0, 0x0478);

TeensyLoader.upload(device , "./firmware.hex", (addr, size) => {
  process.stdout.write(".");
});

TeensyLoader.reboot(device);

API

TeensyLoader.open(vendorId, productId)

Waits for the device with vendorId and productId to appear, and opens it. Returns the opened device.

TeensyLoader.upload(device, firmwareFile[, progress])

Uploads the firmware from firmwareFile (an Intel Hex format file) to the previously opened device. If the optional progress callback is present, it will be called for every block written, with two arguments: the current address being written, and the size of the firmware.

Returns device.

TeensyLoader.reboot(device)

Reboots an opened device.

TeensyLoader.close(device)

Closes an opened device, without rebooting it.