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c8bd60bef8
Per the data sheet: Start-up time for register read/write from power-up is Typically 11 ms and the Maximum is 100 ms. It seems the power up reset is only triggered at VDD < 150 mV. So the symptom reported: Failure is only happening after a long power down is consistent with VDD not dropping below 150 mV, therefore not generating a POR and being ready to be written with out delay. This fix adds a delay of 110 ms to ensure the reset has ended with some. margin.
PX4 Pro Drone Autopilot
This repository holds the PX4 Pro flight control solution for drones, with the main applications located in the src/modules directory. It also contains the PX4 Drone Middleware Platform, which provides drivers and middleware to run drones.
- Official Website: http://px4.io (License: BSD 3-clause, LICENSE.md)
- Supported airframes:
- Multicopters
- Fixed wing
- VTOL
- many more experimental types (Rovers, Blimps, Boats, Submarines, etc)
- Releases: Downloads
Please refer to the user documentation and user forum for flying drones with the PX4 flight stack.
Weekly Dev Call
The PX4 Dev Team syncs up on a weekly dev call.
- Wednesday 17:00 Central European Time, 11:00 Eastern Time, 08:00 Pacific Standard Time
- Uber conference (dial-in or web client)
- The agenda is announced in advance on the PX4 Discuss
- Issues and PRs may be labelled devcall to flag them for discussion
Developers
Maintenance Team
- Project / Founder - Lorenz Meier
- Communication Architecture
- UI / UX
- Multicopter Flight Control
- VTOL Flight Control
- Fixed Wing Flight Control
- Racers - Matthias Grob
- OS / drivers - David Sidrane
- UAVCAN / Industrial - Pavel Kirienko
- State Estimation - James Goppert, Paul Riseborough
- Vision based navigation
- Obstacle Avoidance - Vilhjalmur Vilhjalmsson
- Snapdragon
- Intel Aero
- Raspberry Pi / Navio - Beat Kueng
- Parrot Bebop - Michael Schaeuble
- Airmind MindPX / MindRacer - Henry Zhang
- RTPS/ROS2 Interface - Vicente Monge
Supported Hardware
This repository contains code supporting these boards:
- Snapdragon Flight
- Intel Aero
- Raspberry PI with Navio 2
- Parrot Bebop 2
- FMUv1.x
- FMUv2.x
- FMUv3.x Pixhawk 2
- FMUv4.x
- Pixracer
- Pixhawk 3 Pro
- FMUv5.x (ARM Cortex M7, future Pixhawk)
- STM32F4Discovery (basic support) Tutorial
- Gumstix AeroCore (v1 and v2)
- Airmind MindPX V2.8
- Airmind MindRacer V1.2
- Bitcraze Crazyflie 2.0
Project Milestones
The PX4 software and Pixhawk hardware (which has been designed for it) has been created in 2011 by Lorenz Meier.