start NT

2019-12-11 11:18:48 -08:00
parent 50963f0a3e
commit a207a54ec1
4 changed files with 108 additions and 4 deletions
@@ -0,0 +1,77 @@
+/**
+ * Copyright - See the COPYRIGHT that is included with this distribution.
+ * pvxs is distributed subject to a Software License Agreement found
+ * in file LICENSE that is included with this distribution.
+ */
+
+#include <pvxs/nt.h>
+
+namespace pvxs {
+namespace nt {
+
+
+TypeDef NTScalar::build()
+{
+    TypeDef def(TypeCode::Struct,
+                value.isarray() ? "epics:nt/NTScalarArray:1.0" : "epics:nt/NTScalar:1.0");
+
+    const bool isnumeric = value.kind()==Kind::Integer || value.kind()==Kind::Real;
+    const auto scalar = value.scalarOf();
+
+    def.begin()
+            .insert("value", value)
+            .insert("alarm", "alarm_t", TypeCode::Struct).seek("alarm")
+                .insert("severity", TypeCode::Int32)
+                .insert("status", TypeCode::Int32)
+                .insert("message", TypeCode::String)
+            .up()
+            .insert("timeStamp", "time_t", TypeCode::Struct).seek("timeStamp")
+                .insert("secondsPastEpoch", TypeCode::Int64)
+                .insert("nanoseconds", TypeCode::Int32)
+                .insert("userTag", TypeCode::Int32)
+            .up()
+            ;
+
+    if(display && isnumeric) {
+        def.begin()
+                .insert("display", TypeCode::Struct).seek("display")
+                    .insert("limitLow", scalar)
+                    .insert("limitHigh", scalar)
+                    .insert("description", TypeCode::String)
+                    //.insert("format", TypeCode::String)
+                    .insert("units", TypeCode::String)
+                .up()
+                ;
+    }
+
+    if(control && isnumeric) {
+        def.begin()
+                .insert("control", TypeCode::Struct).seek("control")
+                    .insert("limitLow", scalar)
+                    .insert("limitHigh", scalar)
+                    .insert("minStep", scalar)
+                .up()
+                ;
+    }
+
+    if(valueAlarm && isnumeric) {
+        def.begin()
+                .insert("valueAlarm", TypeCode::Struct).seek("valueAlarm")
+                    .insert("active", TypeCode::Bool) // useless?
+                    .insert("lowAlarmLimit", scalar)
+                    .insert("lowWarningLimit", scalar)
+                    .insert("highWarningLimit", scalar)
+                    .insert("highAlarmLimit", scalar)
+                    .insert("lowAlarmSeverity", TypeCode::Int32)
+                    .insert("lowWarningSeverity", TypeCode::Int32)
+                    .insert("highWarningSeverity", TypeCode::Int32)
+                    .insert("highAlarmSeverity", TypeCode::Int32)
+                    .insert("hysteresis", TypeCode::Float64)
+                .up()
+                ;
+    }
+
+    return def;
+}
+
+}} // namespace pvxs::nt