maxlapshin’s gists

maxlapshin / gist:b8db942c0c1f886fce796cf8136b83ee

Created July 28, 2026 07:40

	[ 106.246630] i2c i2c-2: mv64xxx: I2C bus locked, block: 1, time_left: 0
	[ 108.326724] i2c i2c-2: mv64xxx: I2C bus locked, block: 1, time_left: 0
	[ 110.406799] i2c i2c-2: mv64xxx: I2C bus locked, block: 1, time_left: 0


	[EC] Watchdog is timed out, reset power.

	U-Boot SPL 2021.10-wb1.7.1-gaf2600c5e5 (Oct 23 2023 - 08:43:42 +0000)
	DRAM: 1024 MiB
	Trying to boot from MMC2

maxlapshin / otel.erl

Last active April 30, 2025 20:48

Opentelemetry tracing

	-module(otel).
	-include_lib("kernel/include/logger.hrl").
	-include_lib("corelib/include/corelib_openapi.hrl").

	-export([start_trace/0, start_trace/1]).
	-export([end_trace/0]).
	-export([start_span/0, start_span/1]).
	-export([end_span/0, end_span/1]).
	-export([setattrs/1, setname/1]).
	-export([get_context/0, set_context/1]).

maxlapshin / c2_schema.erl

Created April 23, 2025 08:09

openapi

	-module(c2_schema).
	-include_lib("kernel/include/logger.hrl").

	-export([json2config/1, json2config/2]).

	-record(ctx, {
	drop_unknown,
	fill_defaults,
	allow_miss_mandatory,
	allow_forced_undefined,

maxlapshin / shmem.c

Created July 11, 2024 17:13

	#include <sys/mman.h>
	#include <sys/stat.h>
	#include <erl_nif.h>
	#include <unistd.h>
	#include <stdint.h>
	#include <string.h>
	#include <fcntl.h>


	static ErlNifResourceType* shmem_resource;

maxlapshin / wfb-gs.service

Created March 26, 2023 19:08

	[Unit]
	Description=WFB-CLI on tty1
	After=getty.target
	Conflicts=getty@tty1.service


	[Service]
	Type=simple
	ExecStart=/usr/bin/wfb-cli gs
	ExecStop=/bin/kill -HUP ${MAINPID}

maxlapshin / doc.tex

Created October 14, 2022 07:47

	\documentclass[a4paper,11pt]{article}
	\usepackage[T2A]{fontenc}
	\usepackage[utf8]{inputenc}
	\usepackage{cmap} % для кодировки шрифтов в pdf

	$if(listings)$
	\usepackage{listings}
	\newcommand{\passthrough}[1]{#1}
	$endif$

maxlapshin / control.erl

Created April 18, 2022 17:21

	#!/usr/bin/env escript
	%%
	%%! -env ERL_LIBS _build/default/lib

	main(Args) ->
	inet_db:set_lookup([file, dns]),
	inet_db:add_host({127,0,0,1}, ["server.l"]),
	ensure_epmd_is_working(),
	Names = case net_adm:names("server.l") of
	{error, _} -> [];

maxlapshin / reconfigurable_supervisor_SUITE.erl

Created May 5, 2021 17:41

	-module(reconfigurable_supervisor_SUITE).
	-compile(nowarn_export_all).
	-compile(export_all).


	% This test is checking modified supervisor code that can do hot reconfiguration of whole tree.
	%
	% Idea is following: our processes configuration should be dependent from start args.
	% If we want to reconfigure process on fly, we should change his start args (just like we do in React.js)
	%

maxlapshin / type_mapper_SUITE.erl

Created September 21, 2020 22:10

	-module(type_mapper_SUITE).
	-compile(nowarn_export_all).
	-compile(nowarn_unused_record).
	-compile(nowarn_unused_type).
	-compile(export_all).

	-compile({parse_transform,type_mapper}).

	all() ->
	[{group, from_json}].

maxlapshin / prepare-docker-arm64-qemu.sh

Created April 30, 2020 11:50

	#!/bin/sh

	# How to prepare your linux box to run ARM64 images in docker

	# https://codepyre.com/2019/12/arming-yourself/
	wget https://download.qemu.org/qemu-4.2.0.tar.xz
	tar xf qemu-4.2.0.tar.xz
	cd qemu-4.2.0
	apt install -y bison flex build-essential libglib2.0-dev libpixman-1-dev qemu binfmt-support
	./configure --target-list=aarch64-linux-user,arm-linux-user --static

Max Lapshin maxlapshin