Zephyr RTOS setup raspberry pi - joectchan/blog GitHub Wiki
Zephyr RTOS setup on Raspberry Pi
- This does NOT work at this moment. The installation procedure installs toolchain for Ubuntu on x86. Raspberry Pi is ARM. I need to learn how to configure
westto use a different toolchain.
Following the steps on the official page
Step 1
Update my Ubuntu on raspberry pi. Straight forward.
Step 2
I run into these errors when I try to install the standard set of packages.
E: Package 'gcc-multilib' has no installation candidate
E: Unable to locate package g++-multilib
E: Couldn't find any package by regex 'g++-multilib'
apt-cache search gcc-multilib shows that it provides cross-compilers. I circumvent the erros by skipping these two packages.
This is screenshot of what I typed and my result
ubuntu@ubuntu:~$ sudo apt install --no-install-recommends git cmake ninja-build gperf ccache dfu-util device-tree-compiler wget python3-pip python3-setuptools python3-tk python3-wheel xz-utils file make gcc libsdl2-dev
Reading package lists... Done
Building dependency tree
Reading state information... Done
cmake is already the newest version (3.13.4-1build1).
... Omitted many pages of output ...
Setting up libglu1-mesa-dev:arm64 (9.0.1-0ubuntu1) ...
Setting up libsdl2-dev (2.0.10+dfsg1-1ubuntu1) ...
ubuntu@ubuntu:~$
The version of cmake is recent enough. No further installation needed.
Install west is smooth.
Step 3
I changed a little because I want my programming projects under ~/workspace/
cd ~/workspace/
west init zephyrproject
cd zephyrproject
west update
Step 4
Export Zephyr CMake package is straight forward.
Step 5
pip3 isntall. First, I change the location the requirement file because mine is installed under ~/workspace/
pip3 install --user -r zephyr/scripts/requirements.txt
However, I run into errors
In file included from src/lxml/etree.c:692:
src/lxml/includes/etree_defs.h:14:10: fatal error: libxml/xmlversion.h: No such file or directory
14 | #include "libxml/xmlversion.h"
| ^~~~~~~~~~~~~~~~~~~~~
compilation terminated.
Compile failed: command 'aarch64-linux-gnu-gcc' failed with exit status 1
cc -I/usr/include/libxml2 -c /tmp/xmlXPathInitj7amqm0l.c -o tmp/xmlXPathInitj7amqm0l.o
/tmp/xmlXPathInitj7amqm0l.c:1:10: fatal error: libxml/xpath.h: No such file or directory
1 | #include "libxml/xpath.h"
| ^~~~~~~~~~~~~~~~
compilation terminated.
*********************************************************************************
Could not find function xmlCheckVersion in library libxml2. Is libxml2 installed?
*********************************************************************************
error: command 'aarch64-linux-gnu-gcc' failed with exit status 1
----------------------------------------
Command "/usr/bin/python3 -u -c "import setuptools, tokenize;__file__='/tmp/pip-install-dgluy_te/lxml/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record /tmp/pip-record-5c7z_uy8/install-record.txt --single-version-externally-managed --compile --user --prefix=" failed with error code 1 in /tmp/pip-install-dgluy_te/lxml/
Scroll up a few screens of log. Find out the compiliation is meant to get these packages.
Building wheels for collected packages: coverage, sphinx-tabs, cbor, junit2html, lxml
Since compilation breaks down around code related to libxml2 installation, I start from searching for lxml.
ubuntu@ubuntu:~/workspace/zephyrproject$ apt-cache search lxml
python3-lxml - pythonic binding for the libxml2 and libxslt libraries
I install a pre-built package for Ubuntu (for raspberry pi)
ubuntu@ubuntu:~/workspace/zephyrproject$ sudo apt-get install python3-lxml
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following additional packages will be installed:
python3-bs4 python3-html5lib python3-soupsieve python3-webencodings
Suggested packages:
python3-genshi python3-lxml-dbg python-lxml-doc
The following NEW packages will be installed:
python3-bs4 python3-html5lib python3-lxml python3-soupsieve python3-webencodings
0 upgraded, 5 newly installed, 0 to remove and 0 not upgraded.
Need to get 1315 kB of archives.
After this operation, 6020 kB of additional disk space will be used.
Do you want to continue? [Y/n] Y
I run my original pip3 install after installing python3-lxml
ubuntu@ubuntu:~/workspace/zephyrproject$ pip3 install --user -r zephyr/scripts/requirements.txt
... Omitted many pages of output ...
Successfully installed Pygments-2.6.1 alabaster-0.7.12 anytree-2.8.0 arrow-0.15.5 babel-2.8.0 breathe-4.14.2 cbor-1.0.0 coverage-5.1 docutils-0.16 gcovr-4.2 gitlint-0.13.1 imagesize-1.2.0 junit2html-22 pytz-2019.3 sh-1.12.14 snowballstemmer-2.0.0 sphinx-2.4.4 sphinx-rtd-theme-0.4.3 sphinx-tabs-1.1.13 sphinxcontrib-applehelp-1.0.2 sphinxcontrib-devhelp-1.0.2 sphinxcontrib-htmlhelp-1.0.3 sphinxcontrib-jsmath-1.0.1 sphinxcontrib-qthelp-1.0.3 sphinxcontrib-serializinghtml-1.1.4 sphinxcontrib-svg2pdfconverter-1.0.1 tabulate-0.8.7
Step 6
I follow this step with no change. It takes a long time to complete, despite showing error messages.
[*] Installing additional host tools...
rm: cannot remove 'environment-setup*': No such file or directory
mv: cannot stat 'version-*': No such file or directory
I allow the installation to create ~/.zephyrrc for me. (I use it very often.)
I find no ${ZEPHYR_SDK_INSTALL_DIR}/sysroots/x86_64-pokysdk-linux directory installed on my Raspberry Pi. The installation on my Ubuntu x86 has that directory.
I am not certain the toolchain installed by this step will work 100% on Raspberry Pi. I will copy the 60-openocd.rules file from my x86 to Raspberry Pi with scp.
Step 7
I run into failure. The toolchain installed is indeed intended for Ubuntu on x86 cross-compiling for ARM. Raspberry Pi is already an ARM system. Need to figure out how to make west run with a different toolchain.
ubuntu@ubuntu:~/workspace/zephyrproject$ west build -p auto -s zephyr/samples/hello_world -d build-hello-world -b disco_l475_iot1
-- west build: generating a build system
Including boilerplate (Zephyr base): /home/ubuntu/workspace/zephyrproject/zephyr/cmake/app/boilerplate.cmake
-- Application: /home/ubuntu/workspace/zephyrproject/zephyr/samples/hello_world
-- Zephyr version: 2.2.99 (/home/ubuntu/workspace/zephyrproject/zephyr)
-- Found Python3: /usr/bin/python3.7 (found suitable exact version "3.7.5") found components: Interpreter
-- Board: disco_l475_iot1
-- Found west: /home/ubuntu/.local/bin/west (found suitable version "0.7.2", minimum required is "0.7.1")
-- Found toolchain: zephyr (/home/ubuntu/zephyr-sdk-0.11.2)
CMake Error at /home/ubuntu/workspace/zephyrproject/zephyr/cmake/compiler/gcc/generic.cmake:24 (message):
Executing the below command failed. Are permissions set correctly?
'/home/ubuntu/zephyr-sdk-0.11.2/aarch64-zephyr-elf/bin/aarch64-zephyr-elf-gcc
--version'
Call Stack (most recent call first):
/home/ubuntu/workspace/zephyrproject/zephyr/cmake/generic_toolchain.cmake:70 (include)
/home/ubuntu/workspace/zephyrproject/zephyr/cmake/app/boilerplate.cmake:502 (include)
/home/ubuntu/workspace/zephyrproject/zephyr/share/zephyr-package/cmake/ZephyrConfig.cmake:24 (include)
/home/ubuntu/workspace/zephyrproject/zephyr/share/zephyr-package/cmake/ZephyrConfig.cmake:35 (include_boilerplate)
CMakeLists.txt:5 (find_package)
-- Configuring incomplete, errors occurred!
FATAL ERROR: command exited with status 1: /usr/bin/cmake -B/home/ubuntu/workspace/zephyrproject/build-hello-world -S/home/ubuntu/workspace/zephyrproject/zephyr/samples/hello_world -GNinja -DBOARD=disco_l475_iot1
ubuntu@ubuntu:~/workspace/zephyrproject$ /home/ubuntu/zephyr-sdk-0.11.2/aarch64-zephyr-elf/bin/aarch64-zephyr-elf-gcc
-bash: /home/ubuntu/zephyr-sdk-0.11.2/aarch64-zephyr-elf/bin/aarch64-zephyr-elf-gcc: cannot execute binary file: Exec format error
ubuntu@ubuntu:~/workspace/zephyrproject$ exit