UART
Define voltage, baud rate and flow control.
Learn how UART, USB CDC, Bluetooth serial adapters and TCP serial bridges carry the open protocol.
Define voltage, baud rate and flow control.
Treat reads as a continuous byte stream.
Handle disconnect, fragmentation and reconnect.
Preserve protocol bytes without added text.
Keep handshake, parser, subscription and PTT lease state per port; moving or transmitting equipment must retain a manual stop path.