Re: [Patch] new serial flow control
From: Samuel Thibault
Date: Thu Oct 07 2004 - 09:33:59 EST
Hi,
Le jeu 07 oct 2004 à 14:00:24 +0100, Alan Cox a tapoté sur son clavier :
> In this mode the DTE end (host normally) asserts RTS to request
> transmit access to the link. The DCE asserts CTS to indicate it has
> finished sending bits, and the DTE then transmits.
>
> RTS is a direction selector (RTS = 0, DCE transmit) (RTS = 1, DTE
> transmit). CTS acts as the handshake to deal with the link turn around.
Hum... It seems like every role is inverted with TVB: _TVB_ raises
_CTS_ to request transmit access. The _PC_ then raises _RTS_ to
indicate it has finished sending bits, TVB then transmits.
(Yes, the cabling is correct: that's the way the DOS driver works)
Regards,
Samuel
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