iamniels

Debugging Cipherlab RS38 Android barcode scanner with ADB

Enable ADB on the RS38 using the following instructions: https://developer.chrome.com/docs/devtools/remote-debugging
Set default USB-mode of RS38 to PTP (Use USB for in Android settings)
Install SDK Platform Tools from https://developer.android.com/tools/releases/platform-tools
Connect phone with USB-cable to PC
CD into the platform tools and run ./adb devices
A popup should appear on the phone for ADB authorization
The RS38 should now be listed by the ADB tool
Continue with the remote debugging instructions in Chrome to start debugging

Server side printing with Google Cloud Print API from a PHP application

It took me quite some time to figure out how to print properly from a web application. I will explain here how I did it, so you don't have to spend the same time.

Authorization

Google Cloud Print API uses OAuth 2.0 for authorization.

As explained [here][1] on the Google Developer page, the best way to use OAuth with the Google API is with a Google service account. Create a service account as explained on the Google Developer page.

To use OAuth a library is required. Google has published the [Google API PHP client library][2]. If you want to use the examples from the Developer pages, you need to use version 1 of the library. In this article I use version 2 of the library.

	<!doctype html>
	<html lang="en">
	<head>
	<!-- Required meta tags -->
	<meta charset="utf-8">
	<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">

	<!-- Bootstrap CSS -->
	<link rel="stylesheet" href="https://bootswatch.com/4/darkly/bootstrap.min.css" crossorigin="anonymous">
	<script src="https://unpkg.com/feather-icons"></script>

	<?php
	$url = 'https://kiyoh.com/v1/invite/external';
	$params = array(
	'hash' => 'HASH',
	'location_id' => 'LOCATION_ID',
	'tenantId' => '98', // 99 for klantenvertellen
	'delay' => 0,
	'first_name' => 'CUSTOMER NAME', // Last name is optional, so just use first_name for the full name
	'ref_code' => 'YOUR REFERENCE',
	'language' => 'nl',

	Open On-Chip Debugger 0.9.0 (2015-09-02-10:42)
	Licensed under GNU GPL v2
	For bug reports, read
	http://openocd.org/doc/doxygen/bugs.html
	Info : The selected transport took over low-level target control. The results might differ compared to plain JTAG/SWD
	adapter speed: 2000 kHz
	adapter_nsrst_delay: 100
	none separate
	srst_only separate srst_nogate srst_open_drain connect_deassert_srst
	Info : Unable to match requested speed 2000 kHz, using 1800 kHz