diff --git a/avr/modules/si7021/0BUILD b/avr/modules/si7021/0BUILD
index e93f9da..18d01fb 100644
--- a/avr/modules/si7021/0BUILD
+++ b/avr/modules/si7021/0BUILD
@@ -5,6 +5,7 @@
   <extradist>
     main.asm
     main2.asm
+    send.asm
   </extradist>
 
 </gwbuild>
diff --git a/avr/modules/si7021/main2.asm b/avr/modules/si7021/main2.asm
index 44ae478..4694912 100644
--- a/avr/modules/si7021/main2.asm
+++ b/avr/modules/si7021/main2.asm
@@ -104,14 +104,14 @@ SI7021_MeasureTemp:
     sbrs r17, SI7021_FLAGS_PRESENT_BIT  ; investigate PRESENT BIT
       rjmp SI7021_MeasureTemp_error     ; jmp if PRESENT bit clear
     push r17
-      rcall si7021MeasureHumidity
+      rcall si7021MeasureTemp
     pop r17
     brcc SI7021_MeasureTemp_error
     ori r17, SI7021_FLAGS_TEMP_VALID
     sts si7021Flags, r17
-    rcall si7021CalcHumidity
-    sts si7021LastHumidity, r18
-    sts si7021LastHumidity+1, r19
+    rcall si7021CalcTemp
+    sts si7021LastTemp, r18
+    sts si7021LastTemp+1, r19
 SI7021_MeasureTemp_done:
   pop r15
   out SREG, r15
@@ -139,9 +139,9 @@ SI7021_MeasureHumidity:
     brcc SI7021_MeasureHumidity_error
     ori r17, SI7021_FLAGS_HUM_VALID
     sts si7021Flags, r17
-    rcall si7021CalcTemp                 ; calculate temp*100 from sensor value
-    sts si7021LastTemp, r18
-    sts si7021LastTemp+1, r19
+    rcall si7021CalcHumidity             ; 
+    sts si7021LastHumidity, r18
+    sts si7021LastHumidity+1, r19
 SI7021_MeasureHumidity_done:
   pop r15
   out SREG, r15
diff --git a/avr/modules/si7021/send.asm b/avr/modules/si7021/send.asm
new file mode 100644
index 0000000..1ca5015
--- /dev/null
+++ b/avr/modules/si7021/send.asm
@@ -0,0 +1,43 @@
+; ***************************************************************************
+; copyright   : (C) 2025 by Martin Preuss
+; email       : martin@libchipcard.de
+;
+; ***************************************************************************
+; * This file is part of the project "AqHome".                              *
+; * Please see toplevel file COPYING of that project for license details.   *
+; ***************************************************************************
+
+.cseg
+
+
+; ---------------------------------------------------------------------------
+; @routine SI7021_SendTemperature
+
+SI7021_SendTemperature:
+  ldi r16, SI7021_VALUE_TEMP
+  rcall SI7021_GetValue
+  brcc SI7021_SendTemperature_end
+  ldi r17, VALUE_ID_SI7021_TEMP       ; VALUE ID
+  ldi r22, AQHOME_VALUETYPE_TEMP      ; VALUE TYPE
+  rcall Main_SendValue
+SI7021_SendTemperature_end:
+  ret
+; @end
+
+
+
+; ---------------------------------------------------------------------------
+; @routine SI7021_SendHumidity
+
+SI7021_SendHumidity:
+  ldi r16, SI7021_VALUE_HUMIDITY
+  rcall SI7021_GetValue
+  brcc SI7021_SendHumidity_end
+  ldi r17, VALUE_ID_SI7021_HUM        ; VALUE ID
+  ldi r22, AQHOME_VALUETYPE_HUMIDITY  ; VALUE TYPE
+  rcall Main_SendValue
+SI7021_SendHumidity_end:
+  ret
+; @end
+
+