kopia lustrzana https://github.com/Hamlib/Hamlib
56 wiersze
1.4 KiB
C
56 wiersze
1.4 KiB
C
/* NT Parport Access stuff - Matthew Duggan (2002) */
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/*
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* ParallelVdm Device (0x2C) is mostly undocumented, used by VDM for parallel
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* port compatibility.
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*/
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/*
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* Different from CTL_CODE in DDK, limited to ParallelVdm but makes this
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* code cleaner.
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*/
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#ifndef _PAR_NT_H
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#define _PAR_NT_H
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#define NT_CTL_CODE( Function ) ( (0x2C<<16) | ((Function) << 2) )
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/* IOCTL codes */
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#define NT_IOCTL_DATA NT_CTL_CODE(1) /* Write Only */
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#define NT_IOCTL_CONTROL NT_CTL_CODE(2) /* Read/Write */
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#define NT_IOCTL_STATUS NT_CTL_CODE(3) /* Read Only */
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/*
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* Raw port access (PC-style port registers but within inversions)
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* Functions returning int may fail.
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*/
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/* The status pin functions operate in terms of these bits: */
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enum ieee1284_status_bits
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{
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S1284_NFAULT = 0x08,
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S1284_SELECT = 0x10,
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S1284_PERROR = 0x20,
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S1284_NACK = 0x40,
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S1284_BUSY = 0x80,
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/* To convert those values into PC-style register values, use this: */
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S1284_INVERTED = S1284_BUSY
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};
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/* The control pin functions operate in terms of these bits: */
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enum ieee1284_control_bits
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{
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C1284_NSTROBE = 0x01,
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C1284_NAUTOFD = 0x02,
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C1284_NINIT = 0x04,
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C1284_NSELECTIN = 0x08,
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/* To convert those values into PC-style register values, use this: */
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C1284_INVERTED = (C1284_NSTROBE
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| C1284_NAUTOFD
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| C1284_NSELECTIN)
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};
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#endif /* _PAR_NT_H */
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