Added alloc to ringbuf module.

bacnet-stack/include/ringbuf.h

@@ -64,6 +64,8 @@ extern "C" {
     bool Ringbuf_Put(
         RING_BUFFER * b,        /* ring buffer structure */
         char *data_element);    /* one element to add to the ring */
+    char * Ringbuf_Alloc(
+        RING_BUFFER * b);
     void Ringbuf_Init(
         RING_BUFFER * b,        /* ring buffer structure */
         char *data,     /* data block or array of data */

bacnet-stack/include/rp.h

@@ -61,6 +61,15 @@ typedef bool(
     *object_valid_instance_function) (
     uint32_t object_instance);
 
+/* structure for linked list of object functions */
+struct BACnet_Read_Property_Functions;
+typedef struct BACnet_Read_Property_Functions {
+    BACNET_OBJECT_TYPE object_type;
+    read_property_function rp_object_property_value;
+    object_valid_instance_function rp_object_valid_instance;
+    struct BACnet_Read_Property_Functions *next;    
+} BACNET_RP_FUNCTIONS;
+
 #ifdef __cplusplus
 extern "C" {
 #endif /* __cplusplus */