Add facility to adjust the services and and other features supported via config.h. This is to reduce code size in embedded builds where the compiler does not do a great job in removing functions that are never called. This is particularly useful for simple server only applications where decoding of response packets and encoding of requests are not required for example.

Also added possibility for RMP of encoding large items in-line in the response packet so that the object RP handlers know how much space they really have without the need for a full APDU buffer being maintained.

bacnet-stack/src/rpm.c

@@ -42,6 +42,7 @@
 
 /** @file rpm.c  Encode/Decode Read Property Multiple and RPM ACKs  */
 
+#if BACNET_SVC_RPM_A
 /* encode the initial portion of the service */
 int rpm_encode_apdu_init(
     uint8_t * apdu,
@@ -199,6 +200,8 @@ int rpm_encode_apdu(
     return apdu_len;
 }
 
+#endif
+
 /* decode the object portion of the service request only. Bails out if
  * tags are wrong or missing/incomplete
  */
@@ -379,8 +382,12 @@ int rpm_ack_encode_apdu_object_property_value(
     if (apdu) {
         /* Tag 4: propertyValue */
         apdu_len += encode_opening_tag(&apdu[apdu_len], 4);
-        for (len = 0; len < application_data_len; len++) {
-            apdu[apdu_len++] = application_data[len];
+        if (application_data == &apdu[apdu_len]) { /* Is Data already in place? */
+            apdu_len += application_data_len; /* Yes, step over data */
+        } else { /* No, copy data in */
+            for (len = 0; len < application_data_len; len++) {
+                apdu[apdu_len++] = application_data[len];
+            }
         }
         apdu_len += encode_closing_tag(&apdu[apdu_len], 4);
     }
@@ -419,6 +426,8 @@ int rpm_ack_encode_apdu_object_end(
     return apdu_len;
 }
 
+#if BACNET_SVC_RPM_A
+
 /* decode the object portion of the service request only */
 int rpm_ack_decode_object_id(
     uint8_t * apdu,
@@ -509,6 +518,8 @@ int rpm_ack_decode_object_property(
     return (int) len;
 }
 
+#endif
+
 #ifdef TEST
 #include <assert.h>
 #include <string.h>