[Verse 1] Two wires carry secrets through the night No clock between them, just a start and stop Each byte wrapped in brackets, packed tight Eight data bits between the bookend drops [Pre-Chorus] Baud rate sets the heartbeat of the line Nine thousand six hundred, steady time [Chorus] U-A-R-T, universal truth in motion Async protocol, no handshake devotion Start bit low, stop bit high Data streaming, reason why Serial whispers never lie [Verse 2] Transmit buffer loads the next in queue Receive shift register pulls bits inside Parity checking keeps the signal true Error flags when corruption tries to hide [Pre-Chorus] Frame format locked in silicon design Every character follows the same line [Chorus] U-A-R-T, universal truth in motion Async protocol, no handshake devotion Start bit low, stop bit high Data streaming, reason why Serial whispers never lie [Bridge] Debug messages paint the system state Console output helps us navigate Device chatter on the embedded side Logic analyzers decode the ride No master, no slave, just point to point Duplex channels keep the signals joint [Verse 3] Ring buffers store what interrupts receive Hardware handles timing while code sleeps Software just decides what to believe Protocol layers build from what it reaps [Final Chorus] U-A-R-T, universal truth in motion Async protocol, no handshake devotion Start bit low, stop bit high Data streaming, reason why Serial whispers never lie Never lie, never lie [Outro] Two wires bridging worlds of different speeds UART delivers everything you need
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