From 4b09f794a1ed7f8cb246fc0dfcc640d32f9e5965 Mon Sep 17 00:00:00 2001
From: Jeff Hill <johill@lanl.gov>
Date: Thu, 2 Sep 1993 18:08:04 +0000
Subject: [PATCH] Initial revision

---
 src/dev/devTimerMz8310.c | 135 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 135 insertions(+)
 create mode 100644 src/dev/devTimerMz8310.c

diff --git a/src/dev/devTimerMz8310.c b/src/dev/devTimerMz8310.c
new file mode 100644
index 000000000..3d67d5c73
--- /dev/null
+++ b/src/dev/devTimerMz8310.c
@@ -0,0 +1,135 @@
+/* devMz8310.c */
+/* share/src/dev $Id$ */
+
+/* Device Support Routines for MZ8310 Timer */
+/*
+ *      Original Author: Matthew C. Needes
+ *      Date:            9-2-93
+ *
+ *      Experimental Physics and Industrial Control System (EPICS)
+ *
+ *      Copyright 1991, the Regents of the University of California,
+ *      and the University of Chicago Board of Governors.
+ *
+ *      This software was produced under  U.S. Government contracts:
+ *      (W-7405-ENG-36) at the Los Alamos National Laboratory,
+ *      and (W-31-109-ENG-38) at Argonne National Laboratory.
+ *
+ *      Initial development by:
+ *              The Controls and Automation Group (AT-8)
+ *              Ground Test Accelerator
+ *              Accelerator Technology Division
+ *              Los Alamos National Laboratory
+ *
+ *      Co-developed with
+ *              The Controls and Computing Group
+ *              Accelerator Systems Division
+ *              Advanced Photon Source
+ *              Argonne National Laboratory
+ *
+ * Modification Log:
+ * -----------------
+ */
+
+#include	<vxWorks.h>
+#include	<vme.h>
+#include	<types.h>
+#include	<stdioLib.h>
+#include	<string.h>
+#include	<iv.h>
+
+#include	<alarm.h>
+#include	<dbRecType.h>
+#include	<dbDefs.h>
+#include	<dbAccess.h>
+#include	<dbCommon.h>
+#include	<fast_lock.h>
+#include        <recSup.h>
+#include	<devSup.h>
+#include	<dbScan.h>
+#include	<special.h>
+#include	<module_types.h>
+#include	<eventRecord.h>
+#include	<pulseCounterRecord.h>
+#include	<choicePulseCounter.h>
+#include	<pulseDelayRecord.h>
+#include	<choicePulseDelay.h>
+#include	<pulseTrainRecord.h>
+#include	<choicePulseTrain.h>
+#include	<timerRecord.h>
+
+#include 	<drvMz8310.h>
+
+static long read_timer();
+static long write_timer();
+
+struct tmdset {
+        long            number;
+        DEVSUPFUN       dev_report;
+        DEVSUPFUN       init;
+        DEVSUPFUN       init_record;
+        DEVSUPFUN       get_ioint_info;
+        DEVSUPFUN       read;
+        DEVSUPFUN       write;
+};
+
+struct tmdset devTmMizar8310 = { 6, NULL, NULL, NULL, NULL, read_timer, write_timer };
+
+/*
+ * These constants are indexed by the time units field in the timer record.
+ * Values are converted to seconds.
+ */
+static double constants[] = {1e3,1e6,1e9,1e12};
+
+static long read_timer(struct timerRecord *ptimer)
+{
+   struct vmeio    *pvmeio;
+   int             source;
+   int             ptst;
+   double          time_pulse[2];  /* delay and width */
+   double          constant;
+ 
+   /* only supports a one channel VME timer module !!!! */
+   pvmeio = (struct vmeio *)(&ptimer->out.value);
+ 
+   if (mz8310_one_shot_read(
+           &ptst,                          /* pre-trigger state */
+           &(time_pulse[0]),               /* offset of pulse */
+           &(time_pulse[1]),               /* width of pulse */
+           (int)pvmeio->card,              /* card number */
+           (int)pvmeio->signal,            /* signal number */
+           &source) != 0) {                /* trigger source */
+       return 1;
+   }
+
+   /* convert according to time units */
+   constant = constants[ptimer->timu];
+ 
+   /* timing pulse 1 is currently active                              */
+   /* put its parameters into the database so that it will not change */
+   /* when the timer record is written                                */
+   ptimer->rdt1 = time_pulse[0] * constant;        /* delay to trigger */
+   ptimer->rpw1 = time_pulse[1] * constant;        /* pulse width */
+ 
+   return 0;
+}
+
+static long write_timer(struct timerRecord *ptimer)
+{
+   struct vmeio    *pvmeio;
+
+   /* put the value to the ao driver */
+   pvmeio = (struct vmeio *)(&ptimer->out.value);
+ 
+   /* put the value to the ao driver */
+   return mz8310_one_shot(
+         (int)ptimer->ptst,                    /* pre-trigger state */
+         ptimer->t1dl,                         /* pulse offset */
+         ptimer->t1wd,                         /* pulse width */
+         (int)pvmeio->card,                    /* card number */
+         (int)pvmeio->signal,                  /* signal number */
+         (int)ptimer->tsrc,                    /* trigger source */
+         ((ptimer->tevt == 0)?0:post_event),   /* addr of event post routine */
+         (int)ptimer->tevt);                   /* event to post on trigger */
+}
+