JGrossholtz

#!/bin/sh
#
# Play an mp3 file at start with the wifiberry-miniamp.
# Loads all necessary modules and uses ffplay (ffmpeg) to
# play the file.
#


start() {
	echo "loading modules"

JGrossholtz

/*
 * This file is an MPU6050 demonstration.
 * https://openest.io/en/2020/01/21/mpu6050-accelerometer-on-raspberry-pi/
 * Copyright (c) 2020 Julien Grossholtz - https://openest.io.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, version 3.
 *
 * This program is distributed in the hope that it will be useful, but

JGrossholtz

# run mpstat and top for 5 minutes, at then end, get a loadaverage value
export DURATION=300 # run for 5 minutes
rm -rf /tmp/analysis; mkdir -p /tmp/analysis; $(timeout -t $DURATION -s2 sh -c './mpstat 1 >/tmp/analysis/mpstat.txt') & $(timeout -t $DURATION -s2 sh -c 'top -b -d1 >/tmp/analysis/top.txt') & sleep $DURATION; cat /proc/loadavg >/tmp/analysis/loadavg.txt

# Filter top output (necessary as the top binary on my embedded system lack many options)
export PROCESS_NAME=communication

cat /tmp/analysis/top.txt  | grep $PROCESS_NAME | awk '{ print $7 }' | sed 's/%//g' > /tmp/analysis/top_filtered.txt
awk '{ total += $1 } END { print total/NR }' /tmp/analysis/top_filtered.txt > /tmp/analysis/top_avg.txt
cat /tmp/analysis/top_filtered.txt  | sort -nr | uniq -c > /btmp/analysis/top_weighted_categories.txt

JGrossholtz

#!/bin/bash

# This script converts all the files in a given folder to a list a VAW files readable by the Horbert kid radio

var=0
for file in *.mp3 ; do
	ffmpeg -i "$file" -acodec pcm_s16le -ac 1 -ar 32000 $var.WAV
	var=$((var+1))
done

JGrossholtz

# Convert mp3 file to Hoerbert kid radio, copy files directly under the corresponding folders
ffmpeg -i InputFile.mp3 -acodec pcm_s16le -ac 1 -ar 32000 0.WAV

JGrossholtz

# Install the inotifywait package, on Fedora:
$ sudo dnf install inotify-tool

# Run inotify-wait on a loop
while true; do inotifywait -e modify -r <folder to watch>; < curstom ; commands> ; done

# eg: recompile a progam when a file is changed:
while true; do inotifywait -e modify -r sources/; make clean; make;done

JGrossholtz

#!/bin/sh                                                                       
                                                                                
# This script can be used to determine the average load of 2 batteries          
# It requires the acpi command.                                                 
                                                                                
battA=$(acpi | grep "Battery \0" | cut -d" " -f 4 | sed "s/[^0-9]//g")          
battB=$(acpi | grep "Battery 1" | cut -d" " -f 4 | sed "s/[^0-9]//g")           
                                                                                
avg=$((($battA+$battB)/2))                                                      
                                                                                

JGrossholtz

I had this issue with Qt Creator 4.1 on Fedora 25:
SSH connection failure: Botan library exception: No object identifier found for secp521r1

It seems to be realted with an internal QtCreator library. The easyest solution seems to remove the QtCreator package and to install it
with QtCreator installer:

http://download.qt.io/official_releases/qtcreator

JGrossholtz

#include <stdio.h>
#include <unistd.h>
#include <modbus.h>
#include <string.h>
#include <errno.h>
#include <sys/ioctl.h>
#include <linux/serial.h>
#include <asm/ioctls.h>

#define NB_REGS 2

JGrossholtz

# This file has been auto-generated by i3-config-wizard(1).
# It will not be overwritten, so edit it as you like.
#
# Should you change your keyboard layout somewhen, delete
# this file and re-run i3-config-wizard(1).
#

# i3 config file (v4)
#
# Please see http://i3wm.org/docs/userguide.html for a complete reference!