linknum23’s gists

linknum23 / tagreader-poe.yaml

Last active September 3, 2024 21:43

Song Tag reader for amplipro demo using a ESP32-POE and reference code from Adonno

	# POE NFG Tag reader
	# this is a slight modification of https://github.com/adonno/tagreader to use POE with the ESP32-POE dev board
	substitutions:
	name: tagreader-poe
	friendly_name: TagReaderPOE

	esphome:
	name: $name
	friendly_name: $friendly_name
	# Automatically add the mac address to the name

linknum23 / app.py

Last active May 21, 2021 19:28 — forked from vigneshjs/app.py

Adding multiple request and response examples to swagger docs in fastAPI

	"""
	FastAPI uses pydantic models to validate the API request body and also generate the swagger documentation. Since the schema
	generated by pydantic only comply to JSON schema specification and not to openAPI specification, swagger documentation
	generated from pydantic models do not support adding multiple examples for a request body.
	Ref: https://fastapi.tiangolo.com/tutorial/schema-extra-example/#technical-details

	In the following code, I have extended fastAPI openAPI schema to include multiple request body examples.
	"""

	import json

linknum23 / binary2header.bash

Last active July 30, 2020 18:27

Binary file to C array (for including the binary as a C array in a header file)

	#!/bin/bash
	xxd -i binary_file > binary_file_as_c_header.h

linknum23 / multiline_match

Created July 17, 2020 15:40

grep -zo "START.*END" File

linknum23 / runx

Last active July 13, 2020 16:35

bash helper, run a command x number of times

	#!/bin/bash
	# run bash command x number of times
	# ie. 'runx 10 echo "Hello"' will print Hello 10 times
	# partially from: https://stackoverflow.com/questions/3737740/is-there-a-better-way-to-run-a-command-n-times-in-bash
	function runx() {
	for _ in $(seq "$1"); do
	eval ${*:2}
	done
	}

linknum23 / test_list_to_dict_lookup.launch

Last active December 11, 2019 13:54

Roslaunch combine dictionary lookups from list

	<?xml version="1.0"?>
	<launch>
	<!-- List of things to lookup in dict, in our case sensors -->
	<arg name="sensors" value="s1,s2" />
	<!-- Actual python dictionary. In our case this maps sensors to topics -->
	<arg name="sensor_topics" value="{
	's1':'t1',
	's2':'t2',
	's3':'t3'
	}" />

linknum23 / find_and_prepend.bash

Last active October 14, 2019 20:14

Advanced find and replace/prepend with sed

	#!/bin/bash

	# these ideas was used during conversion from C code to C++

	directory_whitelist="dir1 dir2" # directories to replace files in

	for dir in $(directory_whitelist); do
	pushd $dir;
	# do replacement but use prefix to make sure replacement only happens once (in this case prepending std::)
	# \1 in the replace portion of the sed command is used to keep the character before the match (typically a space or '(')

linknum23 / early_exit.bash

Created July 2, 2018 16:29

exit or return in bash, handles sourced and direct execution

linknum23 / upgrade_xc32.bash

Last active July 2, 2018 17:59

upgrade microchip x32 peripheral libraries without peripheral libraries executable ( assumes 1.40 is installed and has peripheral libraries )

	#!/bin/bash
	read -p "compiler version: " version
	if [ ! -e /opt/microchip/xc32/v$version ] ; then
	echo "directory /opt/microchip/xc32/v$version not found"
	echo "not an installed version"
	return 2>/dev/null \|\| exit
	fi

	mkdir -p /opt/microchip/xc32/v${version}/pic32-libs/include/lega-c

linknum23 / replay_bag_1khz.launch

Last active March 6, 2018 19:18

Launching 1KHz bagfile playback

	<?xml version="1.0"?>
	<launch>
	<arg name="play_bag" default="true"/>
	<arg name="uut" default="my_node"/>
	<param name="use_sim_time" value="true"/>
	<arg name="bag_file" value="$(env HOME)/.ros/my_bag.bag"/>

	<node pkg="my_pkg" type="$(param uut)" name="$(param uut)_node" output="screen"/>
	<!-- NOTE: standard rosbag published clock rate of 100Hz, was too slow for my ros timer callbacks -->
	<!-- Produce a clock, using the bagfile, at 1KHz to make timer callbacks up to a KHz work! -->

Lincoln Lorenz linknum23