avr: started reworking COM module.

- sending and receiving now basically works again, but too often the
  read buffer is in use when trying to receive a message.

avr/timer.asm

@@ -158,9 +158,12 @@ timerInitTimers_loop:
     mov r18, xl
     or r18, xh
     breq timerInitTimers_end
-
+    mov r18, r20
+    or r18, r21
+    breq timerInitTimers_writeInitial
     add r20, r16               ; add counter pos in table so that not all timers elapse at the same time
     adc r21, r17
+timerInitTimers_writeInitial:
     st X+, r20
     st X, r21
     inc r16
@@ -173,7 +176,6 @@ timerInitTimers_end:
 
 
 timerRunTimers:
-; TODO: incremenent uptime counter
   ldi xl, LOW(timerModuleCounterSecs)
   ldi xh, HIGH(timerModuleCounterSecs)
   rcall Utils_IncrementCounter32
@@ -187,7 +189,7 @@ timerRunTimers_loop:
     mov r16, r22
     andi r16, TIMER_FLAGS_IF_ADDR
     breq timerRunTimers_l1         ; no need to check address
-    lds r16, comAddress            ; check address
+    lds r16, com2Address           ; check address
     tst r16
     breq timerRunTimers_loop       ; no address, ignore counter
 timerRunTimers_l1: