pavel-kirienko

# By default, X-Box 360-compatible controllers are detectable but dysfunctional because they expect the host
# to send a particular USB control transfer with some sort of initialization command.
# This udev rule will invoke a trivial Python script automatically when the gamepad is connected that emits
# the required initialization command.
#
# Integration:
# 1. Put this rule into /etc/udev/rules.d/51-xbox-gamepad.rules
# 2. Install pyusb for the root's Python:   sudo pip install pyusb
# 3. Reload udev rules as root:             udevadm control --reload-rules && udevadm trigger
#

pavel-kirienko

#!/bin/bash
# Convert all video files in the current directory into gifs.
# Silently overwrite existing files.
# This is useful for working with matplotlib animations.
for src in *.mp4
do
    bn="${src%.*}"
    echo "$src $bn"
    ffmpeg -y -i "$src" "${bn}.gif" || exit 1
done

pavel-kirienko

# The part .data=0x08000000 should be replaced with the correct base offset of the ROM.
# The value 0x08000000 is valid for STM32.
arm-none-eabi-objcopy -I binary -O elf32-little --change-section-address .data=0x08000000 input.bin output.elf

pavel-kirienko

def run():
    rpm_setpoint = 0
    going_down = False
    step = 2
    def update():
        nonlocal rpm_setpoint
        nonlocal going_down
        rpm_setpoint += (-step if going_down else step)
        broadcast(uavcan.equipment.esc.RPMCommand(rpm=[rpm_setpoint]))
        if going_down:

pavel-kirienko

#!/bin/bash
#
# Backup server web interface (CGI script).
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions: