Add ASYN_TRACE_STATE

Sometimes it is useful to have a trace level between WARNING and FLOW
to debug drivers and hardware.
In case of a motor, for example, it will show when the motor starts or
stops, without all the poll() messages.

For a temperatur controller it may be new set points send to the device,
or information when the heater is turned on or off.

asyn/asynDriver/asynDriver.h

@@ -197,6 +197,7 @@ typedef struct  asynLockPortNotify {
 #define ASYN_TRACEIO_DRIVER  0x0008
 #define ASYN_TRACE_FLOW      0x0010
 #define ASYN_TRACE_WARNING   0x0020
+#define ASYN_TRACE_STATE     0x0040
 
 /* traceIO mask definitions*/
 #define ASYN_TRACEIO_NODATA 0x0000

asyn/asynRecord/asynRecord.c

@@ -188,6 +188,7 @@ typedef struct oldValues {  /* Used in monitor() and monitorStatus() */
     epicsEnum16 tb3;        /* Trace IO driver */
     epicsEnum16 tb4;        /* Trace flow */
     epicsEnum16 tb5;        /* Trace warning */
+    epicsEnum16 tb6;        /* Trace state */
     epicsInt32 tiom;        /* Trace I/O mask */
     epicsEnum16 tib0;       /* Trace IO ASCII */
     epicsEnum16 tib1;       /* Trace IO escape */
@@ -412,12 +413,14 @@ static long special(struct dbAddr * paddr, int after)
     case asynRecordTB3:
     case asynRecordTB4:
     case asynRecordTB5:
+    case asynRecordTB6:
         traceMask = (pasynRec->tb0 ? ASYN_TRACE_ERROR : 0) |
                     (pasynRec->tb1 ? ASYN_TRACEIO_DEVICE : 0) |
                     (pasynRec->tb2 ? ASYN_TRACEIO_FILTER : 0) |
                     (pasynRec->tb3 ? ASYN_TRACEIO_DRIVER : 0) |
                     (pasynRec->tb4 ? ASYN_TRACE_FLOW : 0) |
-                    (pasynRec->tb5 ? ASYN_TRACE_WARNING : 0);
+                    (pasynRec->tb5 ? ASYN_TRACE_WARNING : 0) |
+                    (pasynRec->tb6 ? ASYN_TRACE_STATE : 0);
         pasynTrace->setTraceMask(pasynUser, traceMask);
         return 0;
     case asynRecordTIOM:
@@ -1044,6 +1047,7 @@ static void monitorStatus(asynRecord * pasynRec)
     REMEMBER_STATE(tb3);
     REMEMBER_STATE(tb4);
     REMEMBER_STATE(tb5);
+    REMEMBER_STATE(tb6);
     REMEMBER_STATE(tiom);
     REMEMBER_STATE(tib0);
     REMEMBER_STATE(tib1);
@@ -1066,6 +1070,7 @@ static void monitorStatus(asynRecord * pasynRec)
     pasynRec->tb3 = (traceMask & ASYN_TRACEIO_DRIVER) ? 1 : 0;
     pasynRec->tb4 = (traceMask & ASYN_TRACE_FLOW) ? 1 : 0;
     pasynRec->tb5 = (traceMask & ASYN_TRACE_WARNING) ? 1 : 0;
+    pasynRec->tb6 = (traceMask & ASYN_TRACE_STATE) ? 1 : 0;
     traceMask = pasynTrace->getTraceIOMask(pasynUser);
     pasynRec->tiom = traceMask;
     pasynRec->tib0 = (traceMask & ASYN_TRACEIO_ASCII) ? 1 : 0;
@@ -1101,6 +1106,7 @@ static void monitorStatus(asynRecord * pasynRec)
     POST_IF_NEW(tb3);
     POST_IF_NEW(tb4);
     POST_IF_NEW(tb5);
+    POST_IF_NEW(tb6);
     POST_IF_NEW(tiom);
     POST_IF_NEW(tib0);
     POST_IF_NEW(tib1);

asyn/asynRecord/asynRecord.dbd

@@ -520,6 +520,13 @@ recordtype(asyn) {
         interest(1)
         menu(asynTRACE)
     }
+    field(TB6,DBF_MENU) {
+        prompt("Trace state")
+        promptgroup(GUI_DISPLAY)
+        special(SPC_MOD)
+        interest(1)
+        menu(asynTRACE)
+    }
     field(TIOM,DBF_LONG) {
         prompt("Trace I/O mask")
         promptgroup(GUI_DISPLAY)

documentation/asynRecord.html

@@ -1413,6 +1413,12 @@ <h2 id="TraceControlFields" style="text-align: center">
           R/W</td>
         <td>
           "Trace warning"</td>
+        <td>
+          TB6</td>
+        <td>
+          R/W</td>
+        <td>
+          "Trace state"</td>
         <td>
           DBF_MENU</td>
         <td>
@@ -1557,7 +1563,7 @@ <h2 id="TraceControlFields" style="text-align: center">
     The above fields are used to control the asynTrace facility. They allow one to turn
     on and off debugging output printed at the shell or written to the trace file.</p>
   <p>
-    The TMSK field allows one to read/write the entire asynTraceMask word. The TB0-TB5
+    The TMSK field allows one to read/write the entire asynTraceMask word. The TB0-TB6
     fields allow one to read/write the individual bits in asynTraceMask. The TIOM field
     allows one to read/write the entire asynTraceIOMask word, and the TIB0-TIB2 fields
     allow one to read/write the individual bits in asynTraceIOMask. The TINM field allows