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Added ability to change default clock speed from shell.

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This commit is contained in:
John Winans
1995-09-01 14:36:35 +00:00
parent d87295397e
commit db1b46e5f9
1 changed files with 30 additions and 6 deletions
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36
src/drv/old/drvDvx.c
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@@ -122,6 +122,9 @@
* for the DMA buffer that is appropriate.
*
* $Log$
* Revision 1.1 1995/03/30 19:35:14 jba
* Seperated drv files into ansi and old dirs. Added combine dir.
*
* Revision 1.22 1995/01/06 17:03:43 winans
* Added some ifdef'd out test code to see if the end of the sequence program
* could be updated to NOT cause an extra sample from port zero to be taken
@@ -181,7 +184,7 @@ static char *SccsId = "$Id$";
#define ADVANCE_HOLD 0xC0
#define RESTART 0x00
/* analogic 2502 memory structure */
/* Analogic 2502 memory structure */
struct dvx_2502
{
unsigned short dev_id; /* device id code (CFF5) */
@@ -205,7 +208,7 @@ struct dvx_inbuf
short *data; /* data buffer */
};
/* analogic 2502 control structure */
/* Analogic 2502 control structure */
struct dvx_rec
{
struct dvx_2502 *pdvx2502; /* pointer to device registers */
@@ -224,6 +227,8 @@ struct dvx_rec
int RearmMode; /* zero if auto-rearm, else manual */
unsigned short ScanRate; /* User settable scan rate */
IOSCANPVT *pioscanpvt;
};
@@ -304,19 +309,19 @@ struct {
static struct dvx_rec dvx[MAX_DVX_CARDS] = {
{ NULL, NULL, NULL, -1, -1, -1, -1, -1, 128, 0, {0x0000ffff, 0x0000ffff, 0x0000ffff, 0x0000ffff, 0x0000ffff, 0x0000ffff, 0x0000ffff, 0x0000ffff}
,{0, 0, 0, 0, 0, 0, 0, 0},
0 , NULL
0 , DVX_DRATE, NULL
},
{ NULL, NULL, NULL, -1, -1, -1, -1, -1, 128, 0, {0x0000ffff, 0x0000ffff, 0x0000ffff, 0x0000ffff, 0x0000ffff, 0x0000ffff, 0x0000ffff, 0x0000ffff}
,{0, 0, 0, 0, 0, 0, 0, 0},
0, NULL
0, DVX_DRATE, NULL
},
{ NULL, NULL, NULL, -1, -1, -1, -1, -1, 128, 0, {0x0000ffff, 0x0000ffff, 0x0000ffff, 0x0000ffff, 0x0000ffff, 0x0000ffff, 0x0000ffff, 0x0000ffff}
,{0, 0, 0, 0, 0, 0, 0, 0},
0, NULL
0, DVX_DRATE, NULL
},
{ NULL, NULL, NULL, -1, -1, -1, -1, -1, 128, 0, {0x0000ffff, 0x0000ffff, 0x0000ffff, 0x0000ffff, 0x0000ffff, 0x0000ffff, 0x0000ffff, 0x0000ffff}
,{0, 0, 0, 0, 0, 0, 0, 0},
0, NULL
0, DVX_DRATE, NULL
}
};
@@ -425,6 +430,16 @@ dvx_int(struct dvx_rec *dvxptr)
cptr->csr = dvxptr->csr_shadow;
}
int dvx_SetScanRate(int Card, unsigned int Rate)
{
/* make sure hardware exists */
if ((Card >= ai_num_cards[DVX2502]) || (Card < 0))
return(-1);
dvx[Card].ScanRate = Rate & 0x0000FFFF;
dvx[Card].pdvx2502->samp_rate = dvx[Card].ScanRate;
return(0);
}
int dvx_RearmModeSet(int card, int mode)
{
/* make sure hardware exists */
@@ -672,7 +687,11 @@ LOCAL long dvx_driver_init(void)
/*
* set scan rate and enable external start
*/
#if 0
pDvxA16->samp_rate = DVX_DRATE; /* scan rate of 184 KHz */
#else
pDvxA16->samp_rate = dvx[i].ScanRate; /* Set scan rate */
#endif
dvx[i].csr_shadow |= CSR_M_ESTART; /* enable ext start (shadow csr) */
pDvxA16->csr = dvx[i].csr_shadow; /* enable external start */
dvx[i].mode = RUN_MODE; /* ready to aquire data */
@@ -904,12 +923,17 @@ int sramld(int card)
#endif
/* set scan rate and run it once */
#if 0
dvx[card].pdvx2502->samp_rate = DVX_DRATE;
#else
dvx[card].pdvx2502->samp_rate = dvx[card].ScanRate; /* Set scan rate */
#endif
dvx[card].pdvx2502->csr = dvx[card].csr_shadow | CSR_M_START;
taskDelay(sysClkRateGet()); /* let scan run */
dvx[card].pdvx2502->csr = dvx[card].csr_shadow; /* restore csr */
}
/*
* dvx_driver
*