Copy of old lessons from afs webpage

2026-02-06 10:10:27 +01:00
commit 80df91d0df
43 changed files with 6945 additions and 0 deletions
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+#include "epicsPV.h"
+#include <stdexcept>
+
+using namespace std;
+
+class myPV : public epicsPV
+{
+public:
+    myPV(const char* channelName=NULL, caDatatype preferredDatatype=caTypeNative)
+        : epicsPV(channelName, preferredDatatype) {}
+    void connectionUpEvent();
+    void connectionDownEvent();
+};
+
+void myPV::connectionUpEvent()
+{
+    cout << name() << " connected, datatype = " << datatype() << endl;
+}
+
+void myPV::connectionDownEvent()
+{
+    cout << name() << " disconnected" << endl;
+}
+
+int main (int argc, const char** argv)
+{
+    try {
+        myPV pv(argv[1]);
+        cout << "before get: " << pv.name() << " = " << pv <<
+            " " << pv.alarmSeverity() << 
+            " " << pv.alarmStatus() << endl;
+        caget(pv);
+        
+        cout << "after get: " << pv.name() << " = " << pv <<
+            " " << pv.alarmSeverity() << 
+            " " << pv.alarmStatus() << endl;
+        
+        double val = pv;
+        cout << pv.name() << " = " << val << endl;
+        
+        unsigned int ival = pv;
+        cout << pv.name() << " = " << ival << endl;
+        
+        if (argc == 3)
+        {
+            pv.put(argv[2]);
+        }
+    }
+    catch (exception& e)
+    {
+        cout << endl << e.what() << endl;
+    }
+    return 0;
+}