avr/modules/network: added messages.

avr/modules/network/msg/common.asm

@@ -56,3 +56,39 @@ NETMSG_AddNextMsgIdToBuffer:
 
 
 
+; ---------------------------------------------------------------------------
+; @routine NETMSG_CheckUidInMsg
+;
+; Compare the UID from a message against our own UID.
+;
+; @param  X     pointer to UID in a message to compare against out own uid
+; @return CFLAG set if matches, cleared otherwise
+; @clobbers r16, r18, r19, r20, r21, X
+
+NETMSG_CheckUidInMsg:
+  push xl
+    push xh
+      rcall Utils_ReadUid
+    pop xh
+  pop xl
+  ld r16, X+
+  cp r16, r18
+  brne NETMSG_CheckUidInMsg_notMe
+  ld r16, X+
+  cp r16, r19
+  brne NETMSG_CheckUidInMsg_notMe
+  ld r16, X+
+  cp r16, r20
+  brne NETMSG_CheckUidInMsg_notMe
+  ld r16, X+
+  cp r16, r21
+  brne NETMSG_CheckUidInMsg_notMe
+  sec
+  ret
+NETMSG_CheckUidInMsg_notMe:
+  clc
+  ret
+; @end
+
+
+