csdhl.asm

PSoC(可编程片上系统)是Cypress半导体公司生产的包含有8位微处理器核和数字与模拟混合的信号阵列芯片

   mov [X+CSD_waSnsDiff+MSB], 0
.InitLowBaselineReset:
   mov A, X
   asr A
   mov X, A
   RAM_SETPAGE_IDX >CSD_LowBaselineReset
   mov A, [CSD_bLowBaselineReset]
   mov [X+CSD_baLowBaselineReset], A
          
.EndofUpdateSensorBaseline:
   RAM_EPILOGUE RAM_USE_CLASS_3
   ret

.ENDSECTION

.SECTION
;-----------------------------------------------------------------------------
;  FUNCTION NAME: CSD_bIsSensorActive(BYTE bSensorNum)
;
;  DESCRIPTION:
;      Returns state of one sensor.	Updates the baSnsOnMask array. 
;      Implements hysteresis based on the Hysteresis parameter.
;-----------------------------------------------------------------------------
;  STACK USAGE: 3 BYTES
;
;  ARGUMENTS: 
;      A => sensor index
;    
;  RETURNS:    
;      A => 1 if sensor is active, 0 otherwise
;
;  SIDE EFFECTS: 
;    The A and X registers may be modified by this or future implementations
;    of this function.  The same is true for all RAM page pointer registers in
;    the Large Memory Model.  When necessary, it is the calling function's
;    responsibility to perserve their values across calls to fastcall16 
;    functions.
;
 CSD_bIsSensorActive:
_CSD_bIsSensorActive:
   RAM_PROLOGUE RAM_USE_CLASS_3
   RAM_SETPAGE_CUR 0 ; direct access ram will always be in interrupt ram area
   RAM_X_POINTS_TO_INDEXPAGE

   push A
   mov X,A
   RAM_SETPAGE_IDX >CSD_baBtnFThreshold
   mov A, [X+CSD_baBtnFThreshold]
   mov [CSD_wTmpBtnFThreshold+LSB], A
   mov [CSD_wTmpBtnFThreshold+MSB], 0

   pop A
   push A
   call CSD_GetOnMask
   RAM_SETPAGE_IDX >CSD_baSnsOnMask
   and A, [X+CSD_baSnsOnMask]
   jnz .WasOn

.WasOff:
   ; Check the difference counts against the threshold
   mov A, [CSD_bHysteresis]
   add [CSD_wTmpBtnFThreshold+LSB], A
   adc [CSD_wTmpBtnFThreshold+MSB], 0
   pop A
   asl A
   mov X, A
   RAM_SETPAGE_IDX >CSD_waSnsDiff
   mov A, [X+CSD_waSnsDiff+LSB]
   sub A, [CSD_wTmpBtnFThreshold+LSB]
   mov A, [X+CSD_waSnsDiff+MSB]
   sbb A, [CSD_wTmpBtnFThreshold+MSB] 
   jc .NotActive
   mov A, X
   asr A
   mov X, A
   RAM_SETPAGE_IDX >CSD_baSnsDebounce
   mov A, [X+CSD_baSnsDebounce]
   dec A
   mov [X+CSD_baSnsDebounce], A
   push A
   mov A, X
   asl A
   mov X, A
   pop A
   jnz .NotActiveDebouncing
   jmp .Active

.WasOn:   
   ; Check the difference counts against the threshold
   mov A, [CSD_bHysteresis]
   sub [CSD_wTmpBtnFThreshold+LSB], A
   sbb [CSD_wTmpBtnFThreshold+MSB], 0
   pop A
   asl A
   mov X, A
   RAM_SETPAGE_IDX >CSD_waSnsDiff
   mov A, [X+CSD_waSnsDiff+LSB]
   sub A, [CSD_wTmpBtnFThreshold+LSB]
   mov A, [X+CSD_waSnsDiff+MSB]
   sbb A, [CSD_wTmpBtnFThreshold+MSB] 
   jc .NotActive

.Active:
   mov A, X
   asr A
   call CSD_GetOnMask
   RAM_SETPAGE_IDX >CSD_baSnsOnMask
   or [X+CSD_baSnsOnMask], A
   mov A, 1
   jmp .EndIsSensorActive
.NotActive:
   mov A, X
   asr A
   push A
   call CSD_GetOnMask
   cpl A
   RAM_SETPAGE_IDX >CSD_baSnsOnMask
   and [X+CSD_baSnsOnMask], A
   RAM_SETPAGE_IDX >CSD_baSnsDebounce
   pop X
   mov A, [CSD_bDebounce]
   mov [X+CSD_baSnsDebounce], A   
   mov A, 0
   jmp .EndIsSensorActive
.NotActiveDebouncing:
   mov A, X
   asr A
   call CSD_GetOnMask
   cpl A
   RAM_SETPAGE_IDX >CSD_baSnsOnMask
   and [X+CSD_baSnsOnMask], A   
   mov A, 0
.EndIsSensorActive:
   RAM_EPILOGUE RAM_USE_CLASS_3
   ret

.ENDSECTION

 CSD_GetOnMask:
_CSD_GetOnMask:
   push A
   asr A
   asr A
   asr A
   mov X, A
   pop A
   and A, 7h
   index CSD_bitlookup
   ret

.LITERAL
CSD_bitlookup:
	db 01h, 02h, 04h, 08h, 10h, 20h, 40h, 80h
.ENDLITERAL 


.SECTION
;-----------------------------------------------------------------------------
;  FUNCTION NAME: CSD_SetDefaultFingerThresholds(void)
;
;  DESCRIPTION:
;    Sets the FingerThreshold RAM array to the user module parameter value
;
;-----------------------------------------------------------------------------
;
;  ARGUMENTS:    None.
;  RETURNS:      None
;  SIDE EFFECTS: 
;    The A and X registers may be modified by this or future implementations
;    of this function.  The same is true for all RAM page pointer registers in
;    the Large Memory Model.  When necessary, it is the calling function's
;    responsibility to perserve their values across calls to fastcall16 
;    functions.
;
 CSD_SetDefaultFingerThresholds:
_CSD_SetDefaultFingerThresholds:
   RAM_PROLOGUE RAM_USE_CLASS_3
   RAM_X_POINTS_TO_INDEXPAGE
   RAM_SETPAGE_IDX >CSD_baBtnFThreshold

   mov   A,CSD_TotalSensorCount                       ; Check if key value in range.
   dec   A
.ThresholdLoop:                                       ; Loop through all sensors and scan
   push  A
   mov   X, A
   mov   [X+CSD_baBtnFThreshold], CSD_FINGER_THRESHOLD
   pop   A
   dec   A
   jnc   .ThresholdLoop
   RAM_EPILOGUE RAM_USE_CLASS_3
   ret
.ENDSECTION

.SECTION
;-----------------------------------------------------------------------------
;  FUNCTION NAME: CSD_InitializeBaselines(void)
;
;  DESCRIPTION:
;    Scans all sensors to find their initial raw count values and loads these
;    into the baseline
;
;-----------------------------------------------------------------------------
;
;  ARGUMENTS:    None.
;  RETURNS:      None
;  SIDE EFFECTS: 
;    The A and X registers may be modified by this or future implementations
;    of this function.  The same is true for all RAM page pointer registers in
;    the Large Memory Model.  When necessary, it is the calling function's
;    responsibility to perserve their values across calls to fastcall16 
;    functions.
;
 CSD_InitializeBaselines:
_CSD_InitializeBaselines:
   RAM_PROLOGUE RAM_USE_CLASS_3
   
   mov   A,CSD_TotalSensorCount                       ; Get sensor num
   dec   A
.BaselineLoop:                                        ; Loop through all sensors and scan
   push  A
   call  CSD_ScanSensor
   RAM_X_POINTS_TO_INDEXPAGE
   pop   A
   push  A
   asl   A
   mov   X, A
   RAM_SETPAGE_IDX >CSD_waSnsResult
   mov A, [X+CSD_waSnsResult+LSB]
   RAM_SETPAGE_IDX >CSD_waSnsBaseline
   mov [X+CSD_waSnsBaseline+LSB], A
   RAM_SETPAGE_IDX >CSD_waSnsResult
   mov A, [X+CSD_waSnsResult+MSB]
   RAM_SETPAGE_IDX >CSD_waSnsBaseline
   mov [X+CSD_waSnsBaseline+MSB], A
   pop   A
   dec   A
   jnc   .BaselineLoop
   RAM_EPILOGUE RAM_USE_CLASS_3
   ret
.ENDSECTION

.SECTION
;-----------------------------------------------------------------------------
;  FUNCTION NAME: CSD_InitializeSensorBaseline(BYTE bSensorNum)
;
;  DESCRIPTION:
;    Scans all sensors to find their initial raw count values and loads these
;    into the baseline
;
;-----------------------------------------------------------------------------
;
;  ARGUMENTS:    None.
;  RETURNS:      None
;  SIDE EFFECTS: 
;    The A and X registers may be modified by this or future implementations
;    of this function.  The same is true for all RAM page pointer registers in
;    the Large Memory Model.  When necessary, it is the calling function's
;    responsibility to perserve their values across calls to fastcall16 
;    functions.
;
 CSD_InitializeSensorBaseline:
_CSD_InitializeSensorBaseline:
   RAM_PROLOGUE RAM_USE_CLASS_3
   push  A
   call  CSD_ScanSensor
   RAM_X_POINTS_TO_INDEXPAGE
   pop A
   asl   A
   mov   X, A
   RAM_SETPAGE_IDX >CSD_waSnsResult
   mov A, [X+CSD_waSnsResult+LSB]
   RAM_SETPAGE_IDX >CSD_waSnsBaseline
   mov [X+CSD_waSnsBaseline+LSB], A
   RAM_SETPAGE_IDX >CSD_waSnsResult
   mov A, [X+CSD_waSnsResult+MSB]
   RAM_SETPAGE_IDX >CSD_waSnsBaseline
   mov [X+CSD_waSnsBaseline+MSB], A
   RAM_EPILOGUE RAM_USE_CLASS_3
   ret
.ENDSECTION

.SECTION
;-----------------------------------------------------------------------------
;  FUNCTION NAME: CSD_bIsAnySensorActive(void)
;
;  DESCRIPTION:
;    Checks to see if any sensor is currently active
;
;-----------------------------------------------------------------------------
;
;  ARGUMENTS:    None.
;  RETURNS:      1 if any active, 0 if none active
;  SIDE EFFECTS: 
;    The A and X registers may be modified by this or future implementations
;    of this function.  The same is true for all RAM page pointer registers in
;    the Large Memory Model.  When necessary, it is the calling function's
;    responsibility to perserve their values across calls to fastcall16 
;    functions.
;
 CSD_bIsAnySensorActive:
_CSD_bIsAnySensorActive:
   RAM_PROLOGUE RAM_USE_CLASS_4
   RAM_SETPAGE_CUR 0 ; direct access ram will always be in interrupt ram area

   mov [CSD_fIsPressed], 0
   mov   A,CSD_TotalSensorCount
   dec   A
.ThresholdLoop:                                       ; Loop through all sensors
   push  A
   call  CSD_bIsSensorActive
   cmp   A, 1
   jnz    .NotActive
   mov [CSD_fIsPressed], 1
.NotActive:
   pop   A
   dec   A
   jnc   .ThresholdLoop
   mov   A, [CSD_fIsPressed]

.NoneActive:
   RAM_EPILOGUE RAM_USE_CLASS_4
   ret
.ENDSECTION

.SECTION
;-----------------------------------------------------------------------------
;  FUNCTION NAME: CSD_UpdateAllBaselines(void)
;
;  DESCRIPTION:
;    Scans all sensors to find their raw count values
;
;-----------------------------------------------------------------------------
;
;  ARGUMENTS:    None.
;  RETURNS:      None
;  SIDE EFFECTS: 
;    The A and X registers may be modified by this or future implementations
;    of this function.  The same is true for all RAM page pointer registers in
;    the Large Memory Model.  When necessary, it is the calling function's
;    responsibility to perserve their values across calls to fastcall16 
;    functions.
;
 CSD_UpdateAllBaselines:
_CSD_UpdateAllBaselines:
   RAM_PROLOGUE RAM_USE_CLASS_4

   mov   A,CSD_TotalSensorCount
   dec   A
.ThresholdLoop:                                       ; Loop through all sensors
   push  A
   call  CSD_UpdateSensorBaseline
   pop   A
   dec   A
   jnc   .ThresholdLoop

   RAM_EPILOGUE RAM_USE_CLASS_4
   ret
.ENDSECTION

IF CSD_SLIDERS_EXIST
.SECTION
;-----------------------------------------------------------------------------
;  FUNCTION NAME: CSD_wGetCentroidPos(BYTE bSnsGroup)
;
;  DESCRIPTION:
;      Checks the difference array for a centroid.  If one exists, the offset 
;      (within the whole difference arrary) and length are placed in the 
;      bCentroidLength and bCentroidStart variables.
;
;      Then the function finds and returns the position of the centroid in the 
;      difference array.  
;     
;-----------------------------------------------------------------------------
;
;  ARGUMENTS: 
;       A => Sensor Group
;       Sensor Group = 0 for the independent sensors group
;       Sensor Group = 1 for the first slider group
;       Sensor Group = 2 for the second slider group
;    
;  RETURNS:    
;      iCtrdPos -> position of the centroid
;
;  SIDE EFFECTS: 
;    The A and X registers may be modified by this or future implementations