terrillmoore

Building OpenSSL 1.1.0 with Microsoft VS 2015

MCCI needs OpenSSL for a Windows project (that will be cross-platform). A casual search didn't turn up either a good source for cross-platform libraries, which meant we have to build them ourselves. A deeper search found a detailed guide here, and yet the details don't match what I found when I checked out the code; and the post doesn't talk about doing it directly from GitHub (which I wanted to do).

Here's the procedure for building OpenSSL on 64-bit Windows 10, with Visual Studio 2015. Others (July 2019) report that this procedure works with Visual Studio 2017 as well. I've not had a chance to try with Visual Studio 2019.

As this procedure dates from late 2016, you may find that there's a CMake or other, newer, procedure that's more suitable.

1. If you don't have it, please install git bash from git-scm.com.

terrillmoore

Convert RTX-Blinky from RTXv4 to RTXv5, and add UART Example

There is no example for using a UART in conjunction with RTXv5 as of this writing. This gist presents an adapted example that was tested in conjunction with Keil V5, RTX APIv2 and the Blinky example.

Create the project

Create the RTX_Blinky project in a spare directory using the "Pack Installer" button.

1. Press the pack installer buttong.
2. In the left panel, select Boards and select MCB1800>Devices>LPC1857.
3. In the right panel, select Examples, and then "CMSIS-RTOS Blinky (MCB1800)". Press the [Copy] button.
4. Select someplace to put the files. The Keil IDE will create subdirectories from this directory. Avoid using an existing location!

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// this Node-RED decoding function decodes the record sent by the Catena 4450 M101 power monitor
// written in a big hurry, so no points for style

var b = msg.payload;  // pick up data for convenience; just saves typing.

// an empty table to which we'll add result fields:
//
// result.vBat: the battery voltage (if present)
// result.vBus: the USB charger voltage (if provided)
// result.boot: the system boot counter, modulo 256

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// Updated 2017-04-20 23:08 EDT tmm@mcci.com -- fix typos in comments
// Add this in your application's "payload formats" section of 
// https://console.thethingsnetwork.org
function Decoder(bytes, port) {
  // Decode an uplink message from a buffer
  // (array) of bytes to an object of fields.
  var decoded = {};

  if (port === 1) {
    cmd = bytes[0];

terrillmoore

I needed the list of supported languages for highlightjs, used by Markdown code fences (```).

There is a list at https://highlightjs.org/usage/, but was not readable. But it looked like markdown, so I grabbed it and made a markdown table.

Language	Classes	Package
1C	1c
ABNF	abnf
Access logs	accesslog
Ada	ada

terrillmoore

{
    "version": "3.14.7",
    "description": "Open-source, cross-platform family of tools designed to build, test and package software",
    "homepage": "https://cmake.org/",
    "license": "BSD-3-Clause",
    "architecture": {
        "64bit": {
            "url": "https://github.com/Kitware/CMake/releases/download/v3.14.7/cmake-3.14.7-win64-x64.zip",
            "hash": "e3ce0bdd966dc9a8e9c57ea949bc195c36c6f843bd3e431990d59c381be7ba8e",
            "extract_dir": "cmake-3.14.7-win64-x64"

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{
    "version": "3.14.0",
    "description": "Open-source, cross-platform family of tools designed to build, test and package software",
    "homepage": "https://cmake.org/",
    "license": "BSD-3-Clause",
    "architecture": {
        "64bit": {
            "url": "https://github.com/Kitware/CMake/releases/download/v3.14.0/cmake-3.14.0-win64-x64.zip",
            "hash": "40e8140d68120378262322bbc8c261db8d184d7838423b2e5bf688a6209d3807",
            "extract_dir": "cmake-3.14.0-win64-x64"

terrillmoore

Make PSpice for TI work in conjunction with Git for Windows

I recently installed PSpice for TI (version 17.4-2020 S002 Windows SPB 64-bit edition).

After installing, Git for Windows bash no longer worked as expected. Instead of starting up in my home directory, it started up in the (emulated) root directory; and it didn't load my profile. (In other words, installing PSpice for TI broke my Git for Windows installation.)

Investigation revealed that the installation had created an environment variable HOME in my profile, with the value c:\mcci\projects\SBP_Data. It was easy enough to fix this.

• Control Panel
• System

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Adapting IPFire net-to-net client config for OpenVPN in ASUS WRT routers

IPFire supports net-to-net connections.

Part of setting up the connection with non-IPFire peers often involves generating a .ovpn file from the client package.

There are some client docs about how to do this, but not net-to-net.

For net-to-net clients, IPFire generates a zip file containing two files. Both files are named based on the name you choose for the VPN.

terrillmoore

Set up XRDP on Ubuntu 18.04 LTS

This was suprisingly non-obvious. Key clues:

• https://www.devopsrun.com/t-ubuntu-18-04-xrdp-authentication-is-required-to-create-a-color-managed-device
• http://c-nergy.be/blog/?p=13390

# initial setup
sudo apt update