diff --git a/avr/modules/valsched/main.asm b/avr/modules/valsched/main.asm
index 4dbf782..1d01f16 100644
--- a/avr/modules/valsched/main.asm
+++ b/avr/modules/valsched/main.asm
@@ -11,15 +11,16 @@
 ; ***************************************************************************
 ; defines
 
-.equ VALSCHED_OFFS_TIMER       = 0
-.equ VALSCHED_OFFS_FLAGS       = 1
-.equ VALSCHED_DATA_SIZE        = 2
+.equ VALSCHED_OFFS_TIMER          = 0
+.equ VALSCHED_OFFS_FLAGS          = 1
+.equ VALSCHED_DATA_SIZE           = 2
 
-.equ VALSCHED_FLAGS_VALUE_BIT   = 0
-.equ VALSCHED_FLAGS_TOSEND_BIT  = 1
-.equ VALSCHED_FLAGS_REPEAT_BIT  = 2
-.equ VALSCHED_FLAGS_REPEAT0_BIT = 6
-.equ VALSCHED_FLAGS_REPEAT1_BIT = 7
+.equ VALSCHED_FLAGS_VALUE_BIT     = 0
+.equ VALSCHED_FLAGS_TOSEND_BIT    = 1
+.equ VALSCHED_FLAGS_REPEAT_BIT    = 2
+.equ VALSCHED_FLAGS_FIRSTLOOP_BIT = 3
+.equ VALSCHED_FLAGS_REPEAT0_BIT   = 6
+.equ VALSCHED_FLAGS_REPEAT1_BIT   = 7
 
 .equ VALSCHED_REPORTTIME1      = 1   ; report after 100ms
 .equ VALSCHED_REPORTTIME2      = 11  ; report after 1100ms
@@ -71,20 +72,26 @@ ValueScheduler_Fini:
 ; @clobbers r16, r17
 
 ValueScheduler_Every100ms:
+  ldd r17, Y+VALSCHED_OFFS_FLAGS
   ldd r16, Y+VALSCHED_OFFS_TIMER
   inc r16
-  breq ValueScheduler_Every100ms_end          ; timer on hold
+  breq ValueScheduler_Every100ms_end             ; timer on hold
   std Y+VALSCHED_OFFS_TIMER, r16
   cpi r16, VALSCHED_REPORTTIME1
   breq ValueScheduler_Every100ms_setSendFlag
+  sbrs r17, VALSCHED_FLAGS_FIRSTLOOP_BIT
+    rjmp ValueScheduler_Every100ms_checkInterval ; jump if not first round
   cpi r16, VALSCHED_REPORTTIME2
   breq ValueScheduler_Every100ms_setSendFlag
   cpi r16, VALSCHED_REPORTTIME3
   breq ValueScheduler_Every100ms_setSendFlag
+ValueScheduler_Every100ms_checkInterval:
   cpi r16, VALSCHED_INTERVAL
-  brne ValueScheduler_Every100ms_end
+  brcs ValueScheduler_Every100ms_end
   ; interval finished, check for repeat
   ldd r17, Y+VALSCHED_OFFS_FLAGS
+  cbr r17, (1<<VALSCHED_FLAGS_FIRSTLOOP_BIT) ; not first loop
+  std Y+VALSCHED_OFFS_FLAGS, r17
   clr r16
   sbrs r17, VALSCHED_FLAGS_REPEAT_BIT
     dec r16                           ; bit not set, stop counter after this interval
@@ -159,6 +166,8 @@ ValueScheduler_SetValue_reduced:
   breq ValueScheduler_SetValue_set0
   ; set 1
   ldd r17, Y+VALSCHED_OFFS_FLAGS
+  sbr r17, (1<<VALSCHED_FLAGS_FIRSTLOOP_BIT)  ; mark first loop
+
   sbr r17, (1<<VALSCHED_FLAGS_REPEAT_BIT)     ; set repeat bit
   sbrs r17, VALSCHED_FLAGS_REPEAT1_BIT
     cbr r17, (1<<VALSCHED_FLAGS_REPEAT_BIT)   ; clear repeat bit if not wanted for "1"
@@ -167,6 +176,7 @@ ValueScheduler_SetValue_reduced:
   rjmp ValueScheduler_SetValue_resetTimer
 ValueScheduler_SetValue_set0:
   ldd r17, Y+VALSCHED_OFFS_FLAGS
+  sbr r17, (1<<VALSCHED_FLAGS_FIRSTLOOP_BIT)  ; mark first loop
   sbr r17, (1<<VALSCHED_FLAGS_REPEAT_BIT)
   sbrs r17, VALSCHED_FLAGS_REPEAT0_BIT
     cbr r17, (1<<VALSCHED_FLAGS_REPEAT_BIT)   ; clear repeat bit if not wanted for "0"