1IEEE1284_ECP_FWD_TO_(3)            Functions           IEEE1284_ECP_FWD_TO_(3)
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NAME

6       ieee1284_ecp_fwd_to_rev, ieee1284_ecp_rev_to_fwd - ECP direction
7       switching
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SYNOPSIS

10       int ieee1284_ecp_fwd_to_rev(struct parport *port);
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12       int ieee1284_ecp_rev_to_fwd(struct parport *port);
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DESCRIPTION

15       These functions are used to switch directions when in ECP mode. On
16       negotiation to ECP mode the direction is forward (in other words,
17       host-to-peripheral). Use ieee1284_ecp_fwd_to_rev to switch from forward
18       to reverse, and ieee1284_ecp_rev_to_fwd to switch from reverse to
19       forward.
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21       They act on the parallel port associated with port, which must be
22       claimed.
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RETURN VALUE

25       E1284_OK
26           Direction switched successfully.
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28       E1284_NOTIMPL
29           The port lacks the required capability. This could be due to a
30           limitation of this version of libieee1284, or a hardware
31           limitation.
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33       E1284_INVALIDPORT
34           The port parameter is invalid (for instance, perhaps the port is
35           not claimed).
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AUTHOR

38       Tim Waugh <twaugh@redhat.com>
39           Author.
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42       Copyright © 2001-2003 Tim Waugh
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46[FIXME: source]                   05/14/2019           IEEE1284_ECP_FWD_TO_(3)
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