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This only covers the correct frame size, setting the buffer to 0 and
copy the payload over.
Missing is:
- copy destination address
- copy source address
- set frame type
- calculate and add CRC32 checksum
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This array does not really contain the whole frame.
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Without that address comunication is not possible.
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These special bytes of the Serial Line Internet Protocol are contained
inside the payload to validate that the escaping is working correctly.
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This transmits a frame via the Serial Line Internet Protocol (SLIP).
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The term EUI-64 is more commonly known (see Wikipedia about MAC
addresses [1]). The term UID-64 was introduced because of ST
documentation.
[1]: https://en.wikipedia.org/wiki/MAC_address
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The shell should not be used anyway since the USB UART port is required
for communication with the software.
Emitting 0xC0 as termination byte of the Serial Line Internet Protocol
(SLIP) every second triggers output in the SLIP-receiving software.
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This demonstrates that the readout of the 64 bit MAC address from the
STM32WL55 microcontroller works and is useful to recognize used devices.
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This is enough to validate that the firmware is running by using the
Zephyr shell.
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