diff --git a/avr/modules/motion/main2.asm b/avr/modules/motion/main2.asm
new file mode 100644
index 0000000..115b9ea
--- /dev/null
+++ b/avr/modules/motion/main2.asm
@@ -0,0 +1,76 @@
+; ***************************************************************************
+; copyright   : (C) 2024 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.   *
+; ***************************************************************************
+
+
+; ***************************************************************************
+; defs
+
+
+
+; ***************************************************************************
+; data
+
+
+
+; ***************************************************************************
+; code
+
+.cseg
+
+
+
+; ---------------------------------------------------------------------------
+; @routine Motion_Init @global
+;
+; @return CFLAG set if okay, clear on error
+; @clobbers none
+
+Motion_Init:
+  ; setup pins
+  cbi MOTION_DDR, MOTION_PIN          ; set DATA port as input
+  cbi MOTION_OUTPUT, MOTION_PIN       ; disable internal pullup for TXD
+  sec
+  ret
+; @end
+
+
+
+; ---------------------------------------------------------------------------
+; @routine Motion_Fini @global
+;
+; @clobbers none
+
+Motion_Fini:
+  cbi MOTION_DDR, MOTION_PIN          ; set DATA port as input
+  cbi MOTION_OUTPUT, MOTION_PIN       ; disable internal pullup for TXD
+  ret
+; @end
+
+
+
+; ---------------------------------------------------------------------------
+; @routine Motion_GetValue @global
+;
+; @return CFLAG set if there is a value, cleared otherwise (standard api)
+; @return R16 value (0=no motion, 1=motion)
+; @clobbers any
+
+Motion_GetValue:
+  clr r16
+  sbic MOTION_INPUT, MOTION_PIN
+    inc r16
+  sec ; there always is data
+  ret
+; @end
+
+
+
+
+
+