Project:
I am working on a project that will allow me to send messages to other devices remotely. I have access to LEDs connected to pins to be used to confirm whether a message has been sent/error (was not able to send the message)/being transmitted. I managed to do that with Beaglebone board and with LEDs connected to the pins. So, I thought of working virtually with various other beaglebones (same Docker Image but multiple containers) where I would echo to the pins with values and that will trigger certain conditional statements, etc. which will just log to the txt file. Hopefully, that will provide me with an estimated performance of the system before I go ahead and buy other beaglebones.
Question:
I am using Windows Docker Desktop where I used VSCode to created DocekrFile as a trial which uses the following code:
FROM balenalib/beaglebone-black-debian:buster
CMD ["/bin/bash"]
however, when I managed to build the docker image and managed to run it using the following command:
docker run -it --privileged testgpio
I can’t seem to find the gpio in the /sys/class, I am getting the following:
root@4be3b7480d92:/# ls /sys/class
bdi bsg devlink input ipvtap mem nd pci_bus power_supply pps rtc scsi_disk scsi_host tty vc virtio-ports
block cuse drm iommu macvtap misc net phy ppp ptp scsi_device scsi_generic thermal uio vfio vtconsole
How can I get gpio to be in the /sys/class as I would need it in my project?
In addition, I also used the following in the file code but the results was the same.
RUN apt-get update && apt-get install -y \
libgpiod2 \
libgpiod-dev \
&& rm -rf /var/lib/apt/lists/*
Section 1:
I used find to look for gpio and I got the following:
find / -name "*gpio*"
find: File system loop detected; ‘/sys/kernel/debug/device_component’ is part of the same file system loop as ‘/sys/kernel/debug’.
/sys/bus/platform/drivers/gpio-clk
/var/lib/dpkg/info/libgpiod2:armhf.symbols
/var/lib/dpkg/info/libgpiod2:armhf.md5sums
/var/lib/dpkg/info/libgpiod-dev.md5sums
/var/lib/dpkg/info/libgpiod2:armhf.shlibs
/var/lib/dpkg/info/libgpiod2:armhf.triggers
/var/lib/dpkg/info/libgpiod-dev.list
/var/lib/dpkg/info/libgpiod2:armhf.list
/usr/include/gpiod.h
/usr/include/gpiod.hpp
/usr/share/doc/libgpiod2
/usr/share/doc/libgpiod-dev
/usr/lib/arm-linux-gnueabihf/libgpiodcxx.so
/usr/lib/arm-linux-gnueabihf/libgpiodcxx.a
/usr/lib/arm-linux-gnueabihf/libgpiod.so.2.1.1
/usr/lib/arm-linux-gnueabihf/libgpiodcxx.so.1
/usr/lib/arm-linux-gnueabihf/libgpiod.so
/usr/lib/arm-linux-gnueabihf/pkgconfig/libgpiod.pc
/usr/lib/arm-linux-gnueabihf/pkgconfig/libgpiodcxx.pc
/usr/lib/arm-linux-gnueabihf/libgpiod.a
/usr/lib/arm-linux-gnueabihf/libgpiodcxx.so.1.0.3
/usr/lib/arm-linux-gnueabihf/libgpiod.so.2
Section 2:
I have modified my DockerFile to the following:
FROM balenalib/beaglebone-black-debian:buster
# Install required packages
RUN apt-get update && \
apt-get install -y git build-essential autoconf automake libtool pkg-config autoconf-archive
# Clone libgpiod from official repository
RUN git clone https://git.kernel.org/pub/scm/libs/libgpiod/libgpiod.git && \
cd libgpiod && \
./autogen.sh --enable-tools=yes --prefix=/usr/local && \
make && \
make install
# Clean up
RUN apt-get clean && \
rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/* && \
rm -rf libgpiod
RUN apt-get update && apt-get install -y \
libgpiod2 \
libgpiod-dev \
&& rm -rf /var/lib/apt/lists/*
CMD ["/bin/bash"]
I got it from following link
Managed to get empty results for gpiodetect and gpioinfo:
root@02c40b9d76da:/# find / -name "*gpio*"
/sys/bus/platform/drivers/gpio-clk
/var/lib/dpkg/info/libgpiod2:armhf.symbols
/var/lib/dpkg/info/libgpiod2:armhf.md5sums
/var/lib/dpkg/info/libgpiod-dev.md5sums
/var/lib/dpkg/info/libgpiod2:armhf.shlibs
/var/lib/dpkg/info/libgpiod2:armhf.triggers
/var/lib/dpkg/info/libgpiod-dev.list
/var/lib/dpkg/info/libgpiod2:armhf.list
/usr/include/gpiod.h
/usr/include/gpiod.hpp
/usr/include/linux/gpio.h
/usr/share/doc/libgpiod2
/usr/share/doc/libgpiod-dev
/usr/local/bin/gpioget
/usr/local/bin/gpiodetect
/usr/local/bin/gpionotify
/usr/local/bin/gpioset
/usr/local/bin/gpioinfo
/usr/local/bin/gpiomon
/usr/local/include/gpiod.h
/usr/local/lib/libgpiod.so.3.1.0
/usr/local/lib/libgpiod.so.3
/usr/local/lib/libgpiod.so
/usr/local/lib/pkgconfig/libgpiod.pc
/usr/local/lib/libgpiod.la
/usr/local/lib/libgpiod.a
/usr/lib/arm-linux-gnueabihf/libgpiodcxx.so
/usr/lib/arm-linux-gnueabihf/libgpiodcxx.a
/usr/lib/arm-linux-gnueabihf/libgpiod.so.2.1.1
/usr/lib/arm-linux-gnueabihf/libgpiodcxx.so.1
/usr/lib/arm-linux-gnueabihf/libgpiod.so
/usr/lib/arm-linux-gnueabihf/pkgconfig/libgpiod.pc
/usr/lib/arm-linux-gnueabihf/pkgconfig/libgpiodcxx.pc
/usr/lib/arm-linux-gnueabihf/libgpiod.a
/usr/lib/arm-linux-gnueabihf/libgpiodcxx.so.1.0.3
/usr/lib/arm-linux-gnueabihf/libgpiod.so.2
root@02c40b9d76da:/# gpiodetect
root@02c40b9d76da:/# gpioinfo
root@02c40b9d76da:/# gpioinfo -c 1