csdslider.c

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

//*****************************************************************************
//*****************************************************************************
//  FILENAME:  `@LIB_NAME`_CSDSLIDER.c
//  Version: 1.1.0.3, Updated on 2007/06/14 at 10:32:12
//  Application: PSoC Express 2.0
//
//  DESCRIPTION:  This Driver provides accomodation for capsense slider.
//				  
//
//-----------------------------------------------------------------------------
//      Copyright (c) Cypress MicroSystems 2006. All Rights Reserved.
//*****************************************************************************
//*****************************************************************************
#include "m8c.h"
#include "`@LIB_NAME`_CSDSLIDER.h"
#include "cmx.h"

//-----------------------------------------------------------------------------
//  FUNCTION NAME: CSDSLIDER_Instantiate(const `@LIB_NAME`_CSDSLIDER_ParameterBlock * pPBlock)
//
//  DESCRIPTION: CSDSLIDER Initialization.
//
//-----------------------------------------------------------------------------
//
//  ARGUMENTS: parameter block
//
//  RETURNS:
//
//  SIDE EFFECTS: 
//
//  THEORY of OPERATION or PROCEDURE: Empty and placed here for further
//	 compatibility
//
////////////////////////////////////////////////////////////////////////////////
void `@LIB_NAME`_CSDSLIDER_Instantiate(const `@LIB_NAME`_CSDSLIDER_ParameterBlock * pPBlock)
{
	CSD_SetScanMode(pPBlock->pCSDSliderSettings->ScanSpeed, pPBlock->pCSDSliderSettings->Resolution);	// Set Scan Mode
	CSD_SetRefValue(pPBlock->pCSDSliderSettings->RefValue); 						// Set Reference Value
	CSD_InitializeGroupBaselines(pPBlock->bInstanceID);
}

//-----------------------------------------------------------------------------
//  FUNCTION NAME: CSDSLIDER_GetValue(const `@LIB_NAME`_CSDSLIDER_ParameterBlock * pPBlock)
//
//  DESCRIPTION:
//    Get current button status from the base driver.
//
//-----------------------------------------------------------------------------
//
//  ARGUMENTS: parameter block
//
//  RETURNS: BYTE
//
//  THEORY of OPERATION or PROCEDURE: Sets the appropriate Scan Mode and 
//   the Ref Value and scans every sensor in the group. Then updates
//	 baseline for the current slider group and gets the finger position.
//
///////////////////////////////////////////////////////////////////////////////
BYTE `@LIB_NAME`_CSDSLIDER_GetValue(const `@LIB_NAME`_CSDSLIDER_ParameterBlock * pPBlock)
{
	BYTE bInstanceID;
	BYTE bPos;

	bInstanceID = pPBlock->bInstanceID;
	
	CSD_SetScanMode(pPBlock->pCSDSliderSettings->ScanSpeed, pPBlock->pCSDSliderSettings->Resolution);	// Set Scan Mode
	CSD_SetRefValue(pPBlock->pCSDSliderSettings->RefValue); 						// Set Reference Value
    CSD_ScanSensorGroup(bInstanceID);							// Scan Slider's Sensors
    CSD_UpdateGroupBaselines(bInstanceID);						// Update Slider's Baseline
	
    bPos = (BYTE)CSD_wGetCentroidPos(bInstanceID);				// Get the finger position
    if (bPos == 0xFF) bPos = 0;
	
	return bPos;
}


//-----------------------------------------------------------------------------
//  FUNCTION NAME: CSDSLIDER_GetDifference(const `@LIB_NAME`_CSDSLIDEBASE_ParameterBlock * pPBlock)
//
//  DESCRIPTION:
//    Get current difference from the base driver.
//
//-----------------------------------------------------------------------------
//
//  ARGUMENTS: parameter block
//
//  RETURNS: BYTE
//
//  THEORY of OPERATION or PROCEDURE: Scans every sensor in the slider group.
//	 Then updates baseline for the current slider group and gets the finger
//	 position.
//
///////////////////////////////////////////////////////////////////////////////
WORD `@LIB_NAME`_CSDSLIDER_GetDifference(const `@LIB_NAME`_CSDSLIDEBASE_ParameterBlock * pPBlock)
{
	BYTE bIndex, bSnsGroup;

	bIndex = pPBlock->bIndex;
	bSnsGroup = pPBlock->bSnsGroup;
	bIndex += CSD_GetGroupSensorIndex(bSnsGroup);
	return CSD_waSnsDiff[bIndex];
}