brandonros’s gists

brandonros / gist:f276b75099d363d8c74e00ec55892e91

Created February 21, 2019 06:05

Vanilla JavaScript equivalent of jQuery $('body').on('click', 'selector', ...)

	const bindEvent = (eventNames, selector, handler) => {
	eventNames.split(' ').forEach((eventName) => {
	document.addEventListener(eventName, function (event) {
	if (event.target.matches(selector + ', ' + selector + ' *')) {
	handler.apply(event.target.closest(selector), arguments)
	}
	}, false)
	})
	}

brandonros / grpc+avro.js

Created March 27, 2019 12:49

gRPC + SSL with Avro encoding in node.js

	const grpc = require('grpc')
	const fs = require('fs')
	const avro = require('avsc')
	const hexdump = require('hexdump-nodejs')

	const encodeMessage = (avroType, request) => {
	let opts = {
	codec: null,
	writeHeader: true
	}

brandonros / isotp-frames.js

Last active June 3, 2019 18:04

node.js implementation of chunking a CAN response into ISO-TP frames

	const FIRST_FRAME_PCI_BYTE = 0x01
	const CONSECUTIVE_FRAME_PCI_BYTE = 0x02
	const FIRST_FRAME_DATA_LENGTH = 5
	const CONSECUTIVE_FRAME_DATA_LENGTH = 7
	const PADDING_BYTE = 0xAA

	const buildFirstFrame = (responseSid, data) => {
	const responseLength = data.length + 1 // add a byte for response SID
	const firstFrameData = data.slice(0, FIRST_FRAME_DATA_LENGTH)
	const firstFrameHeader = Buffer.from([

brandonros / stripe.js

Last active July 6, 2019 21:25

Easiest node.js Stripe API implementation I could come up with

	const rp = require('request-promise-native')

	const apiRequest = (uri, form) => {
	return rp.post({
	uri,
	form,
	json: true,
	headers: {
	authorization: `Basic ${Buffer.from(`${process.env.STRIPE_API_KEY}:`).toString('base64')}`
	}

brandonros / gist:d992a1836671e4e43cad0943aeefca91

Created November 17, 2019 17:46

How to compile libusb in XCode for iPhoneOS 13

See comment/image/screenshot.

brandonros / lit-element.html

Last active February 18, 2024 21:15

lit-element example with unpkg (no build), async API fetch() call, loading state, and styling

	<!doctype html>
	<html>
	<head>
	<script src="https://unpkg.com/@webcomponents/[email protected]/custom-elements-es5-adapter.js"></script>
	<script src="https://unpkg.com/@webcomponents/[email protected]/webcomponents-bundle.js"></script>
	<script type="module">
	import { LitElement, css, html } from 'https://unpkg.com/[email protected]/lit-element.js?module'

	class SimpleGreeting extends LitElement {
	static get styles() {

brandonros / lit-element-spa.html

Last active November 22, 2019 02:42

Outline for single-page application (router + links + app container + routes) with lit-element

	<!doctype html>
	<html>
	<head>
	<script type="module">
	import { LitElement, css, html } from 'https://unpkg.com/lit-element@latest/lit-element.js?module'

	class RouterLink extends LitElement {
	static get properties() {
	return {
	href: { type: String }

brandonros / pl2303-logs.txt

Created March 11, 2020 02:56

	drivers/usb/serial/pl2303.c:993 [pl2303]pl2303_process_read_urb =_ "%s - tty_flag = %d\012"
	drivers/usb/serial/pl2303.c:943 [pl2303]pl2303_read_int_callback =_ "%s - nonzero urb status received: %d\012"
	drivers/usb/serial/pl2303.c:939 [pl2303]pl2303_read_int_callback =_ "%s - urb shutting down with status: %d\012"
	drivers/usb/serial/pl2303.c:855 [pl2303]pl2303_set_break =_ "%s - turning break %s\012"
	drivers/usb/serial/pl2303.c:803 [pl2303]pl2303_tiocmget =_ "%s - result = %x\012"
	drivers/usb/serial/pl2303.c:644 [pl2303]pl2303_set_termios =_ "parity = none\012"
	drivers/usb/serial/pl2303.c:639 [pl2303]pl2303_set_termios =_ "parity = even\012"
	drivers/usb/serial/pl2303.c:636 [pl2303]pl2303_set_termios =_ "parity = space\012"
	drivers/usb/serial/pl2303.c:631 [pl2303]pl2303_set_termios =_ "parity = odd\012"
	drivers/usb/serial/pl2303.c:628 [pl2303]pl2303_set_termios =_ "parity = mark\012"

brandonros / pl2303-wireshark.txt

Created March 12, 2020 03:50

	No. Time Source Destination Protocol Length Text item Info usb.bmRequestType usb.bRequest usb.wValue usb.wIndex usb.wLength usb.data_fragment usb.capdata
	47 10.860227 host 2.1.0 USB 36 ✓ URB_CONTROL in 0xc0 1 0x8484 0 (0x0000) 1
	49 10.860227 host 2.1.0 USB 36 ✓ URB_CONTROL out 0x40 1 0x0404 207 (0x00cf) 0
	51 10.875827 host 2.1.0 USB 36 ✓ URB_CONTROL in 0xc0 1 0x8484 0 (0x0000) 1
	53 10.875827 host 2.1.0 USB 36 ✓ URB_CONTROL in 0xc0 1 0x8383 0 (0x0000) 1
	55 10.891427 host 2.1.0 USB 36 ✓ URB_CONTROL in 0xc0 1 0x8484 0 (0x0000) 1
	57 10.891427 host 2.1.0 USB 36 ✓ URB_CONTROL out 0x40 1 0x0404 222 (0x00de) 0
	59 10.907027 host 2.1.0 USB 36 ✓ URB_CONTROL in 0xc0 1 0x8484 0 (0x0000) 1
	61 10.907027 host 2.1.0 USB 36 ✓ URB_CONTROL in 0xc0 1 0x8383 0 (0x0000) 1
	69 10.908027 host 2.1.0 USB 36 ✓ URB_CONTROL in 0xc0 1 0x008c 0 (0x0000) 2

brandonros / index.js

Last active May 3, 2020 17:45

cp2012 Robotell USB-CAN Adapter userspace implementation

Brandon Ros brandonros