NxHailo

Installing in your project

If installing as a Git:

[
  {:nx_hailo, github: "vittoriabitton/nx_hailo"}
]

Building (macOS via Ubuntu on UTM or Docker)

• Install elixir and erlang
• Setup github SSH keys
• Clone this repository
• Set the environment variables:

export MIX_TARGET=rpi5
export XLA_TARGET_PLATFORM=aarch64-linux-gnu
export EXLA_FORCE_REBUILD=false
export EVISION_PREFER_PRECOMPILED=true

• mix deps.get

• mix firmware

• If OpenCV fails, go into the Evision deps folder and edit the download scrips to have the --no-check-certificate option

• The SD card must either be:

  • read via an USB reader and mounted to UTM; OR
  • mounted via the SD card reader on the Macbook and then the device file pointer must be added to the shared directory for UTM

• sudo chown $USER:disk <sd card device> to remove the need for sudo

• mix burn

• For mix upload, use mix upload <ip>, because UTM lives in a different subnet and won't resolve nerves.local. Use ping nerves.local on the host OS to discover the IP address.

• To access the device from the host machine, copy over the SSH keys to the host and use ssh -i <non .pub key path> nerves.local

Possible issues

• for some reason evision was seeing i686 target toolchain, so I had to manually link gcc/g++ to the proper aarch64 toolchain. This also included creating gcc-gcc and gcc-g++ links besides gcc and g++ inside the /artifacts/rpi5-portable-0.4.0/host/bin/