avr: more work on hardware based uart module.

avr/modules/uart_hw/buffers.asm

@@ -13,6 +13,8 @@
 uartHwDataBegin:
   ; fixed buffers for incoming and outgoing messages
   uartHw_buffers:             .byte UART_HW_FIXEDBUFFERS_NUM*UART_HW_FIXEDBUFFERS_SIZE
+  uartHw_ringBufferMsgNumIn:  .byte UART_HW_MSGNUMINBUF_SIZE
+  uartHw_ringBufferMsgNumOut: .byte UART_HW_MSGNUMOUTBUF_SIZE
 uartHwDataEnd:
 
 
@@ -53,18 +55,34 @@ UART_HW_FixedBuffers_Alloc:
 
 
 ; ---------------------------------------------------------------------------
-; @routine UART_HW_FixedBuffers_Release @global
+; @routine UART_HW_FixedBuffers_ReleaseByAddr @global
 ;
 ; @param X pointer to start of buffers
 ; @clobbers R16
 
-UART_HW_FixedBuffers_Release:
+UART_HW_FixedBuffers_ReleaseByAddr:
   m_fixedbuf_release
   ret
 ; @end
 
 
 
+; ---------------------------------------------------------------------------
+; @routine UART_HW_FixedBuffers_ReleaseByNum @global
+;
+; @param r16 buffer number
+; @clobbers X (R16)
+
+UART_HW_FixedBuffers_ReleaseByNum:
+  rcall UART_HW_FixedBuffers_Locate          ; (R16)
+  brcc UART_HW_FixedBuffers_ReleaseByNum_end
+  rcall UART_HW_FixedBuffers_ReleaseByAddr   ; (R16)
+UART_HW_FixedBuffers_ReleaseByNum_end:
+  ret
+; @end
+
+
+
 ; ---------------------------------------------------------------------------
 ; @routine UART_HW_FixedBuffers_Locate
 ;
@@ -99,3 +117,88 @@ UART_HW_FixedBuffers_Locate_end:
 
 
 
+
+
+; ---------------------------------------------------------------------------
+; @routine UART_HW_AddIncomingMsg @global
+;
+; @return CFLAG on success, cleared on error
+; @param R16 buffer number of the next incoming message
+; @clobbers R17, R18, X
+
+UART_HW_AddIncomingMsgNum:
+  push yl
+    push yh
+      ldi yl, LOW(uartHw_ringBufferMsgNumIn)
+      ldi yh, HIGH(uartHw_ringBufferMsgNumIn)
+      rcall RingBufferY_WriteByte                  ; R17, R18, X
+    pop yh
+  pop yl
+  ret
+; @end
+
+
+
+; ---------------------------------------------------------------------------
+; @routine UART_HW_GetNextIncomingMsgNum @global
+;
+; @return CFLAG on success, cleared on error
+; @return R16 buffer number of the next incoming message
+; @param Y pointer to start of interface data
+; @clobbers R17, R18, X
+
+UART_HW_GetNextIncomingMsgNum:
+  push yl
+    push yh
+      ldi yl, LOW(uartHw_ringBufferMsgNumIn)
+      ldi yh, HIGH(uartHw_ringBufferMsgNumIn)
+      rcall RingBufferY_ReadByte                  ; R17, R18, X
+    pop yh
+  pop yl
+  ret
+; @end
+
+
+
+; ---------------------------------------------------------------------------
+; @routine UART_HW_AddOutgoingMsg @global
+;
+; @return CFLAG on success, cleared on error
+; @param R16 buffer number of the next incoming message
+; @clobbers R17, R18, X
+
+UART_HW_AddOutgoingMsgNum:
+  push yl
+    push yh
+      ldi yl, LOW(uartHw_ringBufferMsgNumOut)
+      ldi yh, HIGH(uartHw_ringBufferMsgNumOut)
+      rcall RingBufferY_WriteByte                  ; R17, R18, X
+    pop yh
+  pop yl
+  ret
+; @end
+
+
+
+; ---------------------------------------------------------------------------
+; @routine UART_HW_GetNextOutgoingMsgNum @global
+;
+; @return CFLAG on success, cleared on error
+; @return R16 buffer number of the next incoming message
+; @param Y pointer to start of interface data
+; @clobbers R17, R18, X
+
+UART_HW_GetNextOutgoingMsgNum:
+  push yl
+    push yh
+      ldi yl, LOW(uartHw_ringBufferMsgNumOut)
+      ldi yh, HIGH(uartHw_ringBufferMsgNumOut)
+      rcall RingBufferY_ReadByte                  ; R17, R18, X
+    pop yh
+  pop yl
+  ret
+; @end
+
+
+
+