asyncio and blocking multi-device tests

2023-12_usb-real-data-rates.md

code/serial_multi_sink/multi_sink.py

code/serial_multi_sink_asyncio/cobs_usb_serial_async.py

code/serial_multi_sink_asyncio/multi_sink_asyncio.py

code/serial_multi_sink_asyncio/multi_sink_blocking.py

code/serial_multi_sink_asyncio/serial_list.py

code/serial_multi_sink_blocking/cobs_usb_serial.py

code/serial_multi_sink_blocking/multi_sink_blocking.py

code/serial_multi_sink_blocking/serial_list.py

code/serial_source/serial_source.ino

images/2023-12-27_asyncio-4-devices-01.png

images/2023-12-27_asyncio-4-devices-02.png

images/2023-12-27_asyncio-4-devices-03.png

images/2023-12-27_asyncio-4-devices-04.png

images/2023-12-27_blocking-1-device.png

images/2023-12-27_blocking-2-devices-01.png

images/2023-12-27_blocking-2-devices-02.png

images/2023-12-27_blocking-2-hub-devices-01.png

images/2023-12-27_blocking-2-hub-devices-02.png

images/2023-12-27_blocking-4-devices-01.png