This repository contains Brother scanner backends for libsane, which are also tested to work on Raspberry Pi. The source code originates from the Brother download page and has been significantly cleaned.
As Brother does not ship ARM binaries, they could be compiled using the instructions below. The resulting /usr/lib/sane/libsane-brother.so has been tested on NanoPi Neo2, and should work on other boards, such as Raspberry Pi. The required libbrscandec.so.1.0.0 is currently missing for non-x86_64 platforms, and is currently being worked on.
sudo apt install libsane-dev libusb-dev libncurses5-dev pkg-config
mkdir build
cd build
cmake -DCMAKE_INSTALL_PREFIX=/usr ..
make -j4
sudo make install
sudo sh -c "echo brother >> /etc/sane.d/dll.conf"
Add udev rule for your printer (use the appropriate ID) and reboot:
lsusb | grep Brother
Bus 005 Device 005: ID 04f9:02d0 Brother Industries, Ltd
cat /etc/udev/rules.d/60-libsane.rules
# Brother scanners
SUBSYSTEM=="usb", ENV{DEVTYPE}=="usb_device", ATTRS{idVendor}=="04f9", ATTRS{idProduct}=="02d0", GROUP="lp", ENV{libsane_matched}="yes", MODE="0666"
Ensure the udev device has rw permissions (reboot might be needed):
ls -l /dev/bus/usb/00* | grep -C 3 lp
/dev/bus/usb/004:
total 0
crw-rw-r-- 1 root root 189, 384 Feb 7 20:56 001
crw-rw-rw- 1 root lp 189, 385 Feb 7 20:59 002
Ensure the Brother backend is loaded, and the scanner is detected:
SANE_DEBUG_DLL=5 scanimage -L
[dll] add_backend: adding backend `brother'
[dll] load: searching backend `brother' in `/usr/lib/aarch64-linux-gnu/sane:/usr/lib/sane'
[dll] load: trying to load `/usr/lib/aarch64-linux-gnu/sane/libsane-brother.so.1'
[dll] load: couldn't open `/usr/lib/aarch64-linux-gnu/sane/libsane-brother.so.1' (No such file or directory)
[dll] load: trying to load `/usr/lib/sane/libsane-brother.so.1'
[dll] load: dlopen()ing `/usr/lib/sane/libsane-brother.so.1'
[dll] init: initializing backend `brother'
[dll] init: backend `brother' is version 1.0.1
[dll] sane_exit: calling backend `brother's exit function
device `brother:bus5;dev1' is a Brother DCP-1510 USB scanner
scanimage -T
For DCP1510 QueryScannerInfo() is failing during sane_brother_start():
scanimage: sane_start: Invalid argument