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Added CTS, DSR and RingIndicator states to Window's semi-documented 

modem line status register.
This commit is contained in:
Rein Klazes 2000-03-30 20:23:32 +00:00 committed by Alexandre Julliard
parent 280aeb9689
commit 7f383a88cb
1 changed files with 23 additions and 9 deletions
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32
misc/comm.c
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@ -78,7 +78,15 @@ DEFAULT_DEBUG_CHANNEL(comm);
#ifndef TIOCINQ
#define TIOCINQ FIONREAD
#endif
#define COMM_MSR_OFFSET 35 /* see knowledge base Q101417 */
/* window's semi documented modem status register */
#define COMM_MSR_OFFSET 35
#define MSR_CTS 0x10
#define MSR_DSR 0x20
#define MSR_RI 0x40
#define MSR_RLSD 0x80
#define MSR_MASK (MSR_CTS|MSR_DSR|MSR_RI|MSR_RLSD)
#define FLAG_LPT 0x80
struct DosDeviceStruct COM[MAX_PORTS];
@ -88,6 +96,18 @@ LPCVOID *unknown[MAX_PORTS];
/* save terminal states */
static struct termios m_stat[MAX_PORTS];
/* update window's semi documented modem status register */
/* see knowledge base Q101417 */
static void COMM_MSRUpdate( UCHAR * pMsr, unsigned int mstat)
{
UCHAR tmpmsr=0;
if(mstat & TIOCM_CTS) tmpmsr |= MSR_CTS;
if(mstat & TIOCM_DSR) tmpmsr |= MSR_DSR;
if(mstat & TIOCM_RI) tmpmsr |= MSR_RI;
if(mstat & TIOCM_CAR) tmpmsr |= MSR_RLSD;
*pMsr = (*pMsr & ~MSR_MASK) | tmpmsr;
}
void COMM_Init(void)
{
int x;
@ -745,10 +765,7 @@ INT16 WINAPI GetCommError16(INT16 cid,LPCOMSTAT16 lpStat)
}
stol = (unsigned char *)unknown[cid] + COMM_MSR_OFFSET;
ioctl(ptr->fd,TIOCMGET,&mstat);
if( mstat&TIOCM_CAR )
*stol |= 0x80;
else
*stol &=0x7f;
COMM_MSRUpdate( stol, mstat);
if (lpStat) {
lpStat->status = 0;
@ -796,10 +813,7 @@ SEGPTR WINAPI SetCommEventMask16(INT16 cid,UINT16 fuEvtMask)
stol = (unsigned char *)unknown[cid] + COMM_MSR_OFFSET;
repid = ioctl(ptr->fd,TIOCMGET,&mstat);
TRACE(" ioctl %d, msr %x at %p %p\n",repid,mstat,stol,unknown[cid]);
if ((mstat&TIOCM_CAR))
*stol |= 0x80;
else
*stol &=0x7f;
COMM_MSRUpdate( stol, mstat);
TRACE(" modem dcd construct %x\n",*stol);
return SEGPTR_GET(unknown[cid]);