; ***************************************************************************
; 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