From 8aeb488e2e39c1122d3ca7ec3dee0bf3868c1547 Mon Sep 17 00:00:00 2001
From: Martin Preuss <martin@aquamaniac.de>
Date: Sun, 1 Sep 2024 20:19:18 +0200
Subject: [PATCH] avr: share code (saves 8 bytes)

---
 avr/modules/com2/lowlevel.asm | 34 ++++++++++++++++++----------------
 1 file changed, 18 insertions(+), 16 deletions(-)

diff --git a/avr/modules/com2/lowlevel.asm b/avr/modules/com2/lowlevel.asm
index 926a24c..a93bc5a 100644
--- a/avr/modules/com2/lowlevel.asm
+++ b/avr/modules/com2/lowlevel.asm
@@ -53,12 +53,10 @@ com2SendByte_loopEnd:
   ; send stopbit
   cbi COM_DDR_DATA, COM_PINNUM_DATA              ; +2 set DATA as input, pullup R makes it ONE
   Utils_WaitNanoSecs COM_BIT_LENGTH, 4, r22      ; wait for one bit length
-  sec
-  ret
+  rjmp com2LowLevelSecRet
 
 com2SendByte_error:
-  clc
-  ret
+  rjmp com2LowLevelClcRet
 
 
 
@@ -97,11 +95,9 @@ com2ReceiveByte_shiftIn:
   rcall com2WaitForDataHigh                    ; wait for start of stopbit
   brcc com2ReceiveByte_error
   mov r16, r20
-  sec
-  ret
+  rjmp com2LowLevelSecRet
 com2ReceiveByte_error:
-  clc
-  ret
+  rjmp com2LowLevelClcRet
 
 
 
@@ -170,11 +166,9 @@ com2WaitForDataState1ms_loop:
     rcall com2WaitFor10MicroSecs                  ; wait for 10us (R22)
     dec r17
   brne com2WaitForDataState1ms_loop
-  clc
-  ret
+  rjmp com2LowLevelClcRet
 com2WaitForDataState1ms_stateReached:
-  sec
-  ret
+  rjmp com2LowLevelSecRet
 
 
 
@@ -198,11 +192,9 @@ com2WaitForAttnState1ms_loop:
     rcall com2WaitFor10MicroSecs                  ; wait for 10us (R22)
     dec r17
   brne com2WaitForAttnState1ms_loop
-  clc
-  ret
+  rjmp com2LowLevelClcRet
 com2WaitForAttnState1ms_stateReached:
-  sec
-  ret
+  rjmp com2LowLevelSecRet
 
 
 
@@ -220,3 +212,13 @@ com2WaitFor10MicroSecs:
     ret
 
 
+com2LowLevelClcRet:
+  clc
+  ret
+
+
+com2LowLevelSecRet:
+  sec
+  ret
+
+