kaidokert

extern "C" {
    static _stack_start: u32;  // End of the stack (top of memory)
    static _ram_length: u32;   // Total RAM length (stack size in bytes)
}

const SAFE_ZONE_BYTES: usize = 256;  // Reserve top and bottom bytes

#[inline(always)]
pub fn check_stack_high_water_mark() -> usize {
    check_stack_high_water_mark_inner::<SAFE_ZONE_BYTES>()

kaidokert

Rust Interrupt Data Sharing Patterns

In embedded Rust, sharing data between the main thread and interrupt handlers requires careful consideration to ensure memory safety and avoid data races, particularly in single-core systems like Cortex-M. This document summarizes three common patterns—static Atomic<T>, static Option<T>, and Mutex<RefCell<Option<T>>>—comparing their use cases, safety, and complexity, and evaluates whether the "move to context" trick applies.

Comparison Table

Pattern	Data Types	Requires unsafe	Synchronization	Overhead	Use Case	Move to Context Trick
static Atomic	Primitives (bool, u32)	No	Atomic op

kaidokert

[{
	"name": "Youtube Test suite",
	"samples": [{
			"name": "Random first test",
			"uri": "https://storage.googleapis.com/ytlr-cert.appspot.com/test-materials/media/high-bitrate/concat/sdr-fps-30/video10_137_h264_1920x1080_fps%3D30_bitrate_kbps%3D19021k.mp4"
		},
		{
			"name": "A bit heavy test",
			"uri": "https://storage.googleapis.com/ytlr-cert.appspot.com/test-materials/media/high-bitrate/sdr-drm/video10_h264_fps%3D30.0_bitrate_kbps%3D18994.589.enc"
		}

kaidokert

Add-WindowsCapability -Online -Name "OpenSSH.Server~~~~0.0.1.0"

# Dump in the key
echo ssh-rsa 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 | Add-Content -Force -Path C:\ProgramData\ssh\administrators_authorized_keys

icacls 'C:\ProgramData\ssh\administrators_authorized_keys' /inheritance:r /grant 'Administrators:F' /grant 'SYSTEM:F'

Set-Service -N

kaidokert

# OpenSSH
$capability = Get-WindowsCapability -Online -Name "OpenSSH.Client~~~~0.0.1.0"
if($capability.State -ne "Installed") {
    WriteInfoHighlighted "`t Enabling OpensSH Client"
    Add-WindowsCapability -Online -Name "OpenSSH.Client~~~~0.0.1.0"
    Set-Service ssh-agent -StartupType Automatic
    Start-Service ssh-agent
}

kaidokert

# Create Windows VM
resource "azurerm_windows_virtual_machine" "windows_vm" {
  size                = "Standard_B1s"
  name                = "${var.prefix}-windows-vm"
  resource_group_name = azurerm_resource_group.main.name
  location            = azurerm_resource_group.main.location
  admin_username      = "${var.adminname}"
  admin_password      = "${var.adminpwd}"
  network_interface_ids = [

kaidokert

Git Subtree Basics

If you hate git submodule, then you may want to give git subtree a try.

Background

When you want to use a subtree, you add the subtree to an existing repository where the subtree is a reference to another repository url and branch/tag. This add command adds all the code and files into the main repository locally; it's not just a reference to a remote repo.

When you stage and commit files for the main repo, it will add all of the remote files in the same operation. The subtree checkout will pull all the files in one pass, so there is no need to try and connect to another repo to get the portion of subtree files, because they were already included in the main repo.

Adding a subtree

Let's say you already have a git repository with at least one commit. You can add another repository into this respository like this:

kaidokert

-- The SQLite database file is in STMCube installation, cube-finder-db.db

select * from (
select substr(rpn,1,length(rpn)-2) as rpn, --remove last 2 letters of RPN which are memory size
	core, featurename, featureitemname
from  (
select replace(replace(rpn,'-A',''),'-X','') as rpn, --squash minor variants
	strValue as core, f.name featurename, fi.item featureitemname
from cpn
join cpn_has_attribute cha on cha.cpn_id=cpn.id

kaidokert

https://github.com/GoogleCloudPlatform/cloud-builders-community/tree/master/windows-builder

https://github.com/search?q=gcr.io+ltsc2019&type=Code

kaidokert

Vagrant.configure("2") do |config|
  config.vm.box = "gusztavvargadr/visual-studio"
  config.vm.box_version = "2019.0.2006"
  config.vm.provider "virtualbox" do |vb|
    vb.gui = true
    vb.memory = "8192"
    vb.cpus = 6
    vb.customize ["modifyvm", :id, "--accelerate3d", "on"]
    vb.customize ["modifyvm", :id, "--clipboard", "bidirectional"]
    vb.customize ["setextradata", "global", "GUI/MaxGuestResolution", "any"]