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This follows the pattern:
* ERR in error handler if statements
* DBG at top of each function and on demand
* INF at end of function
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The used MAC address is from an example range. Later it can easily be
combined with reading from a MAC-providing EEPROM chip to using a unique
hardware MAC on the device.
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Network-based logging via the syslog protocol allows to log from many
IoT devices to a central log server.
This makes reading logs way easier. Choosing UDP removes the need for
logic keeping a state. Maybe dropped packages are acceptable for the use
case but should be rare anyway.
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This script can be called with root permissions and without any
arguments to provide a virtual network interface `zeth` and an IPv6
router advertisement daemon to provide a realistic network environment
without any hardware.
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Using this board by default allows easier development since it compiles
to a Linux executable which can be executed with `./zephyr.exe`,
debugged with `gdb zephyr.exe` and has a virtual serial port for the
Zephyr shell.
Later the 32 bit version or even a QEMU variant should be used but the
64 bit variant is a low hanging fruit since the host libraries can be
used. This is not wanted but easy to accomplish.
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This makes it easier to develop the whole network-related firmware parts
on a simulation board instead of hardware.
The nucleo_f767zi board has likely a hardware bug making Ethernet
sometimes fail. This is not suitable for development.
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This is the latest release of the Zephyr real-time operating system.
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This makes it easier to keep the descriptions and the text inside the
schematic in sync.
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Power over Ethernet (PoE) has the disadvantage that GND is significantly
below earth. This requires that GND of a PoE-powered device is never
attached to earthed devices.
In production use cases this is no problem. The earth lines are
isolated.
Nevertheless for debugging it is sometimes useful to connect measuring
equipment like logic analyzers and oscilloscopes to the board. This is
not possible with PoE. Thus an alternative earth-based 5V power input is
useful.
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This simplifies the CMake code and the paths inside the build folder.
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This CMake function integrates converting the schematic to PDF as part
of the standard build.
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This is the starting point for the PCB development.
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This license is the primary one for the whole project. Sub-directories
might have other licenses like e.g. `fw`.
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This allows to easily build everything from the repository root. For now
this only covers firmware but later electrical PCB and mechanical case
files can be added.
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Tracking the Python environment with specific dependency versions does
not work well. Over time these versions disappear and are not anymore
installable via pip.
For now the alternative is to let the user setup the environment by
interpreting the error output during builds.
This is not convenient but the best which is currently possible.
This furthermore allows to install Python dependencies via the Linux
package manager. With that it is more ergonomic to build since the
Python environment does not have to be sourced.
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The compile_commands.json located in fw/build is symlinked in the
repository root to more conveniently open a text editor with LSP client
there which is directly prepared for the firmware build.
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The Mozilla Public License seems to be suitable for this firmware
project. See the original license text for details.
This commit also adds a `.txt` suffix to the LICENSE file to make the
file type more visible to humans and tools.
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This makes the name shorter which is especially relevant for Git commit
messages.
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