added multiChannel support

example/src/exampleEasyMultiDouble.cpp

@@ -0,0 +1,56 @@
+/*exampleEasyMultiDouble.cpp */
+/**
+ * Copyright - See the COPYRIGHT that is included with this distribution.
+ * EPICS pvData is distributed subject to a Software License Agreement found
+ * in file LICENSE that is included with this distribution.
+ */
+/**
+ * @author mrk
+ */
+
+/* Author: Marty Kraimer */
+
+#include <iostream>
+
+#include <pv/easyMultiDouble.h>
+
+using namespace std;
+using namespace epics::pvData;
+using namespace epics::pvAccess;
+using namespace epics::easyPVA;
+
+
+static void example(EasyPVAPtr const &easyPVA)
+{
+    cout << "example multiDouble\n";
+    size_t num = 5;
+    shared_vector<string> channelNames(num);
+    channelNames[0] = "exampleDouble01";
+    channelNames[1] = "exampleDouble02";
+    channelNames[2] = "exampleDouble03";
+    channelNames[3] = "exampleDouble04";
+    channelNames[4] = "exampleDouble05";
+    PVStringArrayPtr pvNames =
+        getPVDataCreate()->createPVScalarArray<PVStringArray>();
+    pvNames->replace(freeze(channelNames));
+    EasyMultiDoublePtr multiDouble(EasyMultiDouble::create(easyPVA,pvNames));
+    try {
+        shared_vector<double> data = multiDouble->get();
+        cout << "initial " << data << endl;
+        for(size_t i=0; i<num; ++i) data[i] = data[i] + 1.1;
+        multiDouble->put(data);
+        data =  multiDouble->get();
+        cout << "final " << data << endl;
+    } catch (std::runtime_error e) {
+        cout << "exception " << e.what() << endl;
+    }
+
+}
+
+
+int main(int argc,char *argv[])
+{
+    EasyPVAPtr easyPVA = EasyPVA::create();
+    example(easyPVA);
+    return 0;
+}