Initial revision

1990-11-08 08:22:01 +00:00
parent 81bf69cf25
commit d37bcbc292
19 changed files with 1995 additions and 0 deletions
--- a/src/dev/devAiTestAsyn.c
+++ b/src/dev/devAiTestAsyn.c
@@ -0,0 +1,131 @@
+/* devAiTestAsyn.c */
+/* share/src/dev $Id$ */
+
+/* devAiTestAsyn.c - Device Support Routines for testing asynchronous processing*/
+
+
+#include	<vxWorks.h>
+#include	<types.h>
+#include	<stdioLib.h>
+#include	<wdLib.h>
+
+#include	<alarm.h>
+#include	<cvtTable.h>
+#include	<dbDefs.h>
+#include	<dbAccess.h>
+#include	<recSup.h>
+#include	<devSup.h>
+#include	<link.h>
+#include	<aiRecord.h>
+
+/* Create the dset for devAiTestAsyn */
+long init_record();
+long read_ai();
+struct {
+	long		number;
+	DEVSUPFUN	report;
+	DEVSUPFUN	init;
+	DEVSUPFUN	init_record;
+	DEVSUPFUN	get_ioint_info;
+	DEVSUPFUN	read_ai;
+	DEVSUPFUN	special_linconv;
+}devAiTestAsyn={
+	6,
+	NULL,
+	NULL,
+	init_record,
+	NULL,
+	read_ai,
+	NULL};
+
+/* control block for callback*/
+struct callback {
+	void (*callback)();
+	struct dbAddr dbAddr;
+	WDOG_ID wd_id;
+	short   completion;
+};
+
+void callbackRequest();
+
+static void myCallback(pcallback)
+    struct callback *pcallback;
+{
+    struct aiRecord *pai=(struct aiRecord *)(pcallback->dbAddr.precord);
+
+    dbScanLock(pai);
+    pcallback->completion = TRUE;
+    pai->pact=0;
+    dbScanPassive(&(pcallback->dbAddr));
+    dbScanUnlock(pai);
+}
+    
+    
+
+static long init_record(pai)
+    struct aiRecord	*pai;
+{
+    char message[100];
+    struct callback *pcallback;
+    int  precTypeIndex;
+    struct rset *prset;
+
+    /* ai.inp must be a CONSTANT*/
+    switch (pai->inp.type) {
+    case (CONSTANT) :
+	pcallback = (struct callback *)(calloc(1,sizeof(struct callback *)));
+	pai->dpvt = (caddr_t)pcallback;
+	pcallback->callback = myCallback;
+	if(dbNameToAddr(pai->name,&(pcallback->dbAddr))) {
+		logMsg("dbNameToAddr failed in init_record for devAiTestAsyn\n");
+		exit(1);
+	}
+	pcallback->wd_id = wdCreate();
+	pai->val = pai->inp.value.value;
+	break;
+    default :
+	strcpy(message,pai->name);
+	strcat(message,": devAiTestAsyn (init_record) Illegal INP field");
+	errMessage(S_db_badField,message);
+	return(S_db_badField);
+    }
+    /* Make sure record processing routine does not perform any conversion*/
+    pai->linr=0;
+    return(0);
+}
+
+static long read_ai(pai)
+    struct aiRecord	*pai;
+{
+    char message[100];
+    long status,options,nRequest;
+    struct callback *pcallback=(struct callback *)(pai->dpvt);
+    short	wait_time;
+
+    /* ai.inp must be a CONSTANT*/
+    switch (pai->inp.type) {
+    case (CONSTANT) :
+	if(pcallback->completion==TRUE) {
+		printf("%s Completed\n",pai->name);
+		pcallback->completion=FALSE;
+		return(0);
+	} else {
+		wait_time = (short)(pai->val);
+		if(wait_time<=0) return(0);
+		printf("%s Starting asynchronous processing\n",pai->name);
+		wdStart(pcallback->wd_id,wait_time,callbackRequest,pcallback);
+		return(1);
+	}
+    default :
+	if(pai->nsev<MAJOR_ALARM) {
+		pai->nsev = MAJOR_ALARM;
+		pai->nsta = SOFT_ALARM;
+		if(pai->stat!=SOFT_ALARM) {
+			strcpy(message,pai->name);
+			strcat(message,": devAiTestAsyn (read_ai) Illegal INP field");
+			errMessage(S_db_badField,message);
+		}
+	}
+    }
+    return(0);
+}