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Autodetect baud? — Parallax Forums

Autodetect baud?

Jimmy W.Jimmy W. Posts: 112
edited 2008-07-31 01:43 in Propeller 1
Anyone know of a good method / idea to auto detect the baud rate of an rs232 connection? The lines I would be tapping into would have data streaming consistantly but would be unknown what the contents are, it does not use a sync bit either to grab onto.


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Comments

  • Phil Pilgrim (PhiPi)Phil Pilgrim (PhiPi) Posts: 23,514
    edited 2008-07-31 01:19
    Just keep measuring negative-going pulses. After only a few bytes you should have found the shortest one, which will be one bit time long.

    -Phil

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  • RaymanRayman Posts: 15,112
    edited 2008-07-31 01:43
    Check out my uOLED-96-Prop contest submission... It requires that the transmitter send a special code, but otherwise autodetects bauds up to 57kbps...
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