Diff: bricks/collection.h

Revision:

26:dce30a5341bb

Parent:

23:2e73c391bb12

diff -r 339931243be4 -r dce30a5341bb bricks/collection.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/bricks/collection.h	Sat May 19 14:10:17 2018 +0000
@@ -0,0 +1,93 @@
+// collection.h - used to setup a collection of characteristics in order to
+//                setup a service.
+//
+// Description:
+//    Collections are used to setup a service comprising a collection of
+//    characteristics. The setup sequence starts with declaring a collection
+//    (this constructs an empty collection) while passing the collection in-
+//    stance repeatedly to a constructor of a characteristic, which auto-adds
+//    the new constructed characteristics to the collection. Finally, when the
+//    collection instance is passed to a service constructor, the service con-
+//    structor is able to access all characteristics which have been collected
+//    previously.  
+//
+// Example 1: A protocol might be declared as a class as follows
+//
+//    Collection col;                            // collection used during setup
+//
+//    Characteristic<ObjectId>   id(col,0x2AC3,"rw","ID");
+//    Characteristic<ObjectName> name(col,0x2ABE,"rw","Name");
+//    Characteristic<Digital>    presence(col,0x2A56,"r","Presence");
+//
+//    Service presenceDetection(col,0xA001);     // instantiate service
+//
+//    onSetup(Blob &blue)
+//    {
+//       blue.service(presenceDetection);        // add service    
+//    }
+//
+// Example 2: service definition by means of a service definition class
+//
+//   class PresenceDetector
+//   {
+//      public:
+//         Collection col;                       // collection used during setup 
+//
+//         Characteristic<ObjectId> id;          // ID of presence detector
+//         Characteristic<ObjectName> name;      // name of presence detector
+//         Characteristic<Digital> presence;     // digital presence value
+//         Characteristic<DateTime> timestamp;   // last detection change's time
+//         Characteristic<ObjectName> layout;    // name of model railway layout
+//
+//         Service presenceDetection;            // the service
+//
+//      public:
+//         PresenceDetector(Blob &blue, cost UUID uuid) :
+//            list;                              // init service list
+//            id(list,0x2AC3,"rw","ID"),         // instantiate characteristic
+//            name(list,0x2ABE,"rw","Name"),     // instantiate characteristic
+//            presence(list,0x2A56,"r","Presence"),// instantiate characteristic
+//            timestamp(list,0x2A08,"r","Timestamp"),// instantiate characteristic
+//            layout(list,0x2ABE,"rw","Layout"), // instantiate characteristic
+//            presenceDetection(list,uuid)       // instantiate service
+//         {
+//            blue.service(presenceDetection);   // add service    
+//         }
+//   };       
+//
+#ifndef _COLLECTION_H_
+#define _COLLECTION_H_
+
+#include "ble/BLE.h"
+#include "ble/Gap.h"
+
+   class Collection
+   {
+      private:
+         typedef GattCharacteristic *GattCharPtr;
+         
+      public:
+         GattCharacteristic **plist;
+         int count; 
+         
+         Collection()                  // construct empty collection
+         {
+             plist = 0;  count = 0;    // init properties
+         } 
+         
+         void add(GattCharPtr p)
+         {
+             GattCharPtr *pnew = new GattCharPtr[count+1];
+             pnew[count] = p;          // add new characteristic
+
+             if (count > 0)
+             {  for (int i=0; i < count; i++)
+                   pnew[i] = plist[i];
+                delete plist;  
+             }
+             plist = pnew;             // update list pointer
+             count++;
+         }
+   };
+
+#endif // _COLLECTION_H_