simplified code, remove unused code.

avr/modules/network/buffer.asm

@@ -69,20 +69,12 @@ NET_Buffer_Alloc:
       brcc NET_Buffer_Alloc_countersSet
       sts netBuffersMaxUsed, r17
 NET_Buffer_Alloc_countersSet:
-#ifdef MODULES_LED_SIGNAL
-      ldi r16, T03_FLAGS_ALLOC
-      rcall LedSignal_ClrFlag  ; (R17)
-#endif
     pop r16
     out SREG, r15
   pop r15
   sec
   ret
 NET_Buffer_Alloc_error:
-#ifdef MODULES_LED_SIGNAL
-  ldi r16, T03_FLAGS_ALLOC
-  rcall LedSignal_SetFlag  ; (R17)
-#endif
     out SREG, r15
   pop r15
   clc
@@ -93,7 +85,7 @@ NET_Buffer_Alloc_noIrq:
   ldi xh, HIGH(netBuffers)
   m_fixedbuf_reserve NET_BUFFERS_SIZE, NET_BUFFERS_NUM
   brcc NET_Buffer_Alloc_end
-  ldi r17, (1<<NET_IFACE_BUFFER_INUSE_BIT0)            ; set refcounter to 1
+  ldi r17, 0x10                                        ; set refcounter to 1
   st X, r17
 NET_Buffer_Alloc_end:
   ret
@@ -111,17 +103,18 @@ NET_Buffer_ReleaseByAddr:
   push r15
     in r15, SREG
     cli
+    
     ld r16, X
     swap r16
-    andi r16, 0x0f                      ; ref counter now in lower nibble
+    andi r16, 0x0f                      ; ref counter now in low nibble
     breq NET_Buffer_ReleaseByAddr_done  ; refcounter 0? -> not in use
     dec r16
     breq NET_Buffer_ReleaseByAddr_release
-    swap r16
+    swap r16                            ; ref counter now back in high nibble
     push r17
       ld r17, X
-      andi r17, 0x0f
-      or r16, r17
+      andi r17, 0x0f                    ; keep interface number
+      or r16, r17                       ; or interface number into R16 (R16 now complete)
       st X, r16
     pop r17
     rjmp NET_Buffer_ReleaseByAddr_done