PX4 / PX4-Bootloader

PX4 Bootloader for PX4FMU, PX4IO and PX4FLOW

Bootloader for the Pixhawk board family

Build instructions

Build all targets:

git submodule sync --recursive
git submodule update --init --recursive
make

The binaries will be in build/BOARDNAME/BOARDNAME.elf. Two files are built: ELF files for use with JTAG adapters and BIN files for direct onboard upgrading.

Build a specific board: Please check the Makefile for specific build targets.

License

License: LGPL3 for libopencm3, BSD-3-clause for core bootloader (see LICENSE.md)

Contact

• Chat: Dronecode Slack
• Forum: Dronecode Discuss

Bootloader Usage

The typical use case as used for the the PX4IO is described in px4pipbl.pdf.

To avoid accidental erasure or bad image loading:

• The bootloader needs to receive PROTO_GET_SYNC and PROTO_GET_DEVICE prior to receiving PROTO_CHIP_ERASE.
• The bootloader needs to receive PROTO_GET_SYNC and PROTO_GET_DEVICE and PROTO_PROG_MULTI and PROTO_GET_CRC prior to receiving PROTO_BOOT.