diff --git a/avr/main.asm b/avr/main.asm
index 85cd03a..8377c33 100644
--- a/avr/main.asm
+++ b/avr/main.asm
@@ -17,7 +17,7 @@
 ; ---------------------------------------------------------------------------
 ; COM module
 
-.equ COM_BIT_LENGTH      = 104000 ; 104000=9600, 52000=19200, 26000=38400
+.equ COM_BIT_LENGTH      = 52000 ; 104000=9600, 52000=19200, 26000=38400
 
 .equ COM_RINGBUFFER_SIZE = 32    ; 32 bytes for now
 
@@ -97,6 +97,7 @@ ledA3Sram:   .byte LED_SRAM_SIZE
 
 ledA3Flash:    .db DDRA+0x20, PORTA+0x20, PINA+0x20, (1<<PORTA3)
 blinkPattern:  .db 5, 5, 5, 5, 5, 10, 0xff, 0xff   ; 3 short blinks, 1s pause, restart
+blinkPattern2:  .db 10, 20, 0xff, 0xff   ; 1 long blink, 2s pause, restart
 
 
 
@@ -122,9 +123,14 @@ main:
   ldi yh, HIGH(ledA3Sram)
   rcall Led_SetPattern
 
-  ldi r17, 219           ; debug
-  rcall COM_EnqueuePing  ; debug
-
+;  ldi r17, 219           ; debug
+;  rcall COM_EnqueuePing  ; debug
+;  nop
+;  nop
+;  nop
+;  ldi r16, 4
+;  rcall RingBuffer_DeallocRead
+;  rjmp PC+0
   
 main_loop:
     rcall runModulesUntilIdle
@@ -233,18 +239,53 @@ onEvery100ms:
 ; USED: depending on called routines
 
 onEverySecond:
-;  ldi r17, 219
-;  rcall COM_EnqueuePing
-
   in r15, SREG ; debug
   cli
   push r15
-    ldi r18, 0
-    rcall comSendPacketRaw
+
+    ldi yl, LOW(comRingBuffer)
+    ldi yh, HIGH(comRingBuffer)
+    ldd r16, y+RINGBUFFER_OFFS_USED
+    rcall debugSendByte
+
+  ldi r17, 219
+  rcall COM_EnqueuePing
+
+
+    rcall comHandleNextPacketInRingbuffer
+;    brcc debug1
+    
+    rjmp debugEnd
+    
+    rcall comHandleNextPacketInRingbuffer
+    brcs debug2 ; CF set should not be okay here
+    
+    ldi r16, 9
+    rcall debugSendByte
+    rjmp debugEnd
+debug1:
+    ldi r16, 5
+    rcall debugSendByte
+    rjmp debugEnd
+
+debug2:
+    ldi r16, 17
+    rcall debugSendByte
+
+debugEnd:
   pop r15
   out SREG, r15
 
 
+;  in r15, SREG ; debug
+;  cli
+;  push r15
+;    ldi r18, 0
+;    rcall comSendPacketRaw
+;  pop r15
+;  out SREG, r15
+
+
 ;  in r15, SREG ; debug
 ;  cli
 ;  push r15
@@ -278,3 +319,36 @@ onPacketReceived:
 
 
 
+
+
+debugSendByte:
+  in r15, SREG ; debug
+  cli
+
+  ldi r17, 8
+  sbi DDRA, PORTA2 ; debug
+
+  cbi PORTA, PORTA2 ; debug (on)
+  Utils_WaitNanoSecs 200000, 0, r22 ; start with 2t low
+
+debugSendByte_loop:
+  lsr r16
+  brcs debugSendByte_sendLow
+  cbi PORTA, PORTA2 ; debug (on)
+  rjmp debugSendByte_wait
+debugSendByte_sendLow:
+  sbi PORTA, PORTA2 ; debug (off)
+
+debugSendByte_wait:
+  Utils_WaitNanoSecs 100000, 0, r22
+  dec r17
+  brne debugSendByte_loop
+
+  cbi PORTA, PORTA2 ; debug (on)
+  Utils_WaitNanoSecs 200000, 0, r22 ; end with 2t low
+  sbi PORTA, PORTA2 ; debug (off)
+
+
+  out SREG, r15
+  ret
+