37 lines
1.3 KiB
C
37 lines
1.3 KiB
C
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/* HEADER - P_FRAME.H
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Copyright (C) Psion PLC 1991-92
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VER DATE BY DESCRIPTION
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===== ======== === ===========
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1.00F 26/04/90 NSM First relase
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1.10F 07/07/92 NSM Second release
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*/
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#ifndef P_FRAME_H
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#define P_FRAME_H
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#include <stdepoc.h>
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#include <p_crc.h>
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#include <p_llmac.h>
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typedef struct
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{
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/* Transmit stuff */
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P_CRC tcrc; /* the CRC for the transmitted data */
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unsigned char *pbuf; /* where to extract next byte from transmit buffer */
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unsigned char *pend; /* ptr to end of data in transmit buffer */
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unsigned char tcntl; /* the control byte to transmit */
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unsigned char tstat; /* current transmit frame state */
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/* receive stuff */
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unsigned short int rlen; /* current received frame length */
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unsigned char rstat; /* current receive frame state */
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unsigned char rtyp; /* current receive frame type */
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unsigned char rseq; /* current receive frame sequence */
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unsigned char rfull; /* TRUE if a complete data frame is in buffer */
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P_CRC rcrc; /* the CRC for the received data */
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P_FRAME dfrm; /* the internal data frame */
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short int numfrm; /* number of frames currently in supervisory Q */
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P_FRAME *prfin; /* entry pt to supervisory frame Q */
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P_FRAME *prfout; /* removal pt of supervisory frame Q */
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P_FRAME rfrm[MAXFRM]; /* supervisory frame Q */
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} P_FRMCB;
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#endif // P_FRAME_H
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