IEEE1284_ECP_FWD_TO_ - Online Linux Manual PageSection : 3
Updated : 11/11/2010
Source : [FIXME: source]
Note : Functions

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NAMEieee1284_ecp_fwd_to_rev, ieee1284_ecp_rev_to_fwd − ECP direction switching

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SYNOPSISint ieee1284_ecp_fwd_to_rev(struct parport *port); int ieee1284_ecp_rev_to_fwd(struct parport *port);

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DESCRIPTIONThese functions are used to switch directions when in ECP mode​. On negotiation to ECP mode the direction is forward (in other words, host−to−peripheral)​. Use ieee1284_ecp_fwd_to_rev to switch from forward to reverse, and ieee1284_ecp_rev_to_fwd to switch from reverse to forward​. They act on the parallel port associated with port, which must be claimed​.

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RETURN VALUEE1284_OK Direction switched successfully​. E1284_NOTIMPL The port lacks the required capability​. This could be due to a limitation of this version of libieee1284, or a hardware limitation​. E1284_INVALIDPORT The port parameter is invalid (for instance, perhaps the port is not claimed)​.

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AUTHORTim Waugh <​twaugh@redhat.com​> Author.

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COPYRIGHT
Copyright © 2001-2003 Tim Waugh
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