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This is required for upcoming WebSocket APIs.
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The heartbeat of the firmware might be used for multiple purposes. It
can trigger a blinking LED on the PCB, can be displayed in a client
program or might serve additional purposes.
Since at least display in client programs should be implemented and
multiple clients should be support in long term it improves the code
structure to use a zbus channel here to publish heartbeat messages in a
publish-subscribe pattern.
That way the publishing of the heartbeat message and the receiving by an
unknown number of observers is completely decoupled. A central trait of
the publish-subscribe pattern and an advantage for a modular code
structure.
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This provides the index HTML page.
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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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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 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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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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