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Copy pathcy_capsense_generator_v3.c
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cy_capsense_generator_v3.c
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/***************************************************************************//**
* \file cy_capsense_generator_v3.c
* \version 5.0
*
* \brief
* This file contains the source of functions common for register map
* generator module.
*
********************************************************************************
* \copyright
* Copyright 2020-2024, Cypress Semiconductor Corporation (an Infineon company)
* or an affiliate of Cypress Semiconductor Corporation. All rights reserved.
* You may use this file only in accordance with the license, terms, conditions,
* disclaimers, and limitations in the end user license agreement accompanying
* the software package with which this file was provided.
*******************************************************************************/
#include <string.h>
#include "cycfg_capsense_defines.h"
#include "cycfg_peripherals.h"
#include "cy_capsense_common.h"
#include "cy_capsense_structure.h"
#include "cy_capsense_sensing_v3.h"
#include "cy_capsense_generator_v3.h"
#if (CY_CAPSENSE_PLATFORM_BLOCK_FIFTH_GEN)
#include "cy_msc.h"
#endif
#if (defined(CY_IP_M0S8MSCV3))
/*******************************************************************************
* Local definitions
*******************************************************************************/
/** Sensing mode undefined */
#define CY_CAPSENSE_REG_MODE_UNDEFINED (255u)
/** CSD sense mode configuration index */
#define CY_CAPSENSE_REG_MODE_CSD (0u)
/** CSX sense mode configuration index */
#define CY_CAPSENSE_REG_MODE_CSX (1u)
/** CSD sense mode configuration index with CapDAC dithering enabled */
#define CY_CAPSENSE_REG_MODE_CSD_DITHERING (2u)
/** CSX sense mode configuration index with CapDAC dithering enabled */
#define CY_CAPSENSE_REG_MODE_CSX_DITHERING (3u)
/** First mode index with CapDAC dithering enabled */
#define CY_CAPSENSE_REG_MODE_DITHERING (CY_CAPSENSE_REG_MODE_CSD_DITHERING)
/*******************************************************************************
* Internal function prototypes
*******************************************************************************/
#if (CY_CAPSENSE_SENSOR_CONNECTION_MODE == CY_CAPSENSE_CTRLMUX_SENSOR_CONNECTION_METHOD)
static void Cy_CapSense_GenerateCtrlMuxSwControl(
uint32_t chIndex,
cy_stc_capsense_context_t * context);
#endif /* (CY_CAPSENSE_SENSOR_CONNECTION_MODE == CY_CAPSENSE_CTRLMUX_SENSOR_CONNECTION_METHOD) */
#if (CY_CAPSENSE_ENABLE == CY_CAPSENSE_CSD_SHIELD_EN)
static void Cy_CapSense_ApplyShieldConfig(
cy_stc_msc_mode_config_t * ptrBaseCfgMode,
const cy_stc_capsense_context_t * context);
#endif
static void Cy_CapSense_ConfigSensorClock(
uint32_t scanSlot,
uint32_t * ptrSensorCfg,
const cy_stc_capsense_context_t * context);
cy_capsense_status_t Cy_CapSense_GenerateSensorConfigValid(
uint32_t scanSlot,
uint32_t * ptrSensorCfg,
cy_stc_capsense_context_t * context);
uint32_t Cy_CapSense_AdjustSnsClkDivider(
uint8_t snsMethod,
uint8_t snsClkSource,
uint16_t snsClkDivider);
/*******************************************************************************
* Function Name: Cy_CapSense_GenerateBaseConfig
****************************************************************************//**
*
* Generates the configuration for all registers that have to be configured
* one-time to initialize the MSC block.
*
* \param chIndex
* The desired channel index.
*
* \param context
* The pointer to the CAPSENSE™ context structure \ref cy_stc_capsense_context_t.
*
* \return
* Returns the status of the operation:
* - CY_CAPSENSE_STATUS_SUCCESS - The operation is performed successfully.
*
*******************************************************************************/
cy_capsense_status_t Cy_CapSense_GenerateBaseConfig(
uint32_t chIndex,
cy_stc_capsense_context_t * context)
{
uint32_t i;
uint32_t snsMethod;
uint32_t idCounter;
uint8_t * ptrMapping;
uint32_t cdacDitherEnabled;
uint32_t snsMethodInternal;
cy_stc_capsense_internal_context_t * ptrIntrCxt = context->ptrInternalContext;
#if (CY_CAPSENSE_ENABLE == CY_CAPSENSE_CSD_SHIELD_EN)
cy_stc_msc_mode_config_t * ptrBaseCfgMode;
#endif
const cy_stc_msc_base_config_t cy_capsense_smTemplate = CY_CAPSENSE_SENSING_METHOD_BASE_TEMPLATE;
cy_capsense_status_t capStatus = CY_CAPSENSE_STATUS_SUCCESS;
cy_stc_msc_base_config_t * ptrBaseCfg;
const cy_stc_msc_base_config_t * ptrTemplateCfg;
const cy_stc_capsense_channel_config_t * ptrChConfig = &context->ptrCommonConfig->ptrChConfig[chIndex];
/*
* BASE CONFIGURATION
*/
ptrBaseCfg = &context->ptrBaseFrameContext[chIndex];
ptrTemplateCfg = &cy_capsense_smTemplate;
/* Copies template of a base config */
ptrBaseCfg->ctl = ptrTemplateCfg->ctl;
if (context->ptrInternalContext->modClk > 1u)
{
ptrBaseCfg->ctl &= (~MSC_CTL_CLK_MSC_RATIO_Msk);
}
else
{
ptrBaseCfg->ctl |= MSC_CTL_CLK_MSC_RATIO_Msk;
}
ptrBaseCfg->spare = ptrTemplateCfg->spare;
ptrBaseCfg->scanCtl1 = ptrTemplateCfg->scanCtl1;
ptrBaseCfg->scanCtl2 = ptrTemplateCfg->scanCtl2;
ptrBaseCfg->initCtl1 = ptrTemplateCfg->initCtl1;
ptrBaseCfg->initCtl2 = ptrTemplateCfg->initCtl2;
ptrBaseCfg->initCtl3 = ptrTemplateCfg->initCtl3;
ptrBaseCfg->initCtl4 = ptrTemplateCfg->initCtl4;
ptrBaseCfg->senseDutyCtl = ptrTemplateCfg->senseDutyCtl;
ptrBaseCfg->sensePeriodCtl = ptrTemplateCfg->sensePeriodCtl;
ptrBaseCfg->filterCtl = ptrTemplateCfg->filterCtl;
ptrBaseCfg->ccompCdacCtl = ptrTemplateCfg->ccompCdacCtl;
ptrBaseCfg->ditherCdacCtl = ptrTemplateCfg->ditherCdacCtl;
ptrBaseCfg->cswCtl = ptrTemplateCfg->cswCtl;
ptrBaseCfg->swSelGpio = ptrTemplateCfg->swSelGpio;
ptrBaseCfg->swSelCdacRe = ptrTemplateCfg->swSelCdacRe;
ptrBaseCfg->swSelCdacCo = ptrTemplateCfg->swSelCdacCo;
ptrBaseCfg->swSelCdacCf = ptrTemplateCfg->swSelCdacCf;
ptrBaseCfg->swSelCmod1 = ptrTemplateCfg->swSelCmod1;
ptrBaseCfg->swSelCmod2 = ptrTemplateCfg->swSelCmod2;
ptrBaseCfg->swSelCmod3 = ptrTemplateCfg->swSelCmod3;
ptrBaseCfg->swSelCmod4 = ptrTemplateCfg->swSelCmod4;
if ((CY_CAPSENSE_MSC0_CMOD1PADD_PIN != ptrChConfig->pinCmod1) &&
(CY_CAPSENSE_MSC1_CMOD1PADD_PIN != ptrChConfig->pinCmod1))
{
ptrBaseCfg->swSelCmod1 = 0u;
ptrBaseCfg->swSelCmod2 = 0u;
}
else
{
ptrBaseCfg->swSelCmod3 = 0u;
ptrBaseCfg->swSelCmod4 = 0u;
}
ptrBaseCfg->obsCtl = ptrTemplateCfg->obsCtl;
ptrBaseCfg->intr = ptrTemplateCfg->intr;
ptrBaseCfg->intrSet = ptrTemplateCfg->intrSet;
ptrBaseCfg->intrMask = ptrTemplateCfg->intrMask;
/* Set the scanning mode */
#if (CY_CAPSENSE_SCAN_MODE_DMA_DRIVEN == CY_CAPSENSE_SCAN_MODE)
ptrBaseCfg->ctl |= (uint32_t)CY_CAPSENSE_SCAN_MODE_DMA_DRIVEN << MSC_CTL_OPERATING_MODE_Pos;
#endif /* (CY_CAPSENSE_SCAN_MODE_DMA_DRIVEN == CY_CAPSENSE_SCAN_MODE) */
#if (CY_CAPSENSE_SENSOR_CONNECTION_MODE == CY_CAPSENSE_CTRLMUX_SENSOR_CONNECTION_METHOD)
ptrBaseCfg->swSelGpio = 0u;
#endif
/* Frame is not started */
ptrBaseCfg->frameCmd = 0x00u;
/* Clear Structures */
(void)memset(&ptrBaseCfg->sensorConfig, 0, sizeof(cy_stc_msc_sensor_config_t));
(void)memset(&ptrBaseCfg->swSelCsw[0u], 0, CY_MSC_CSW_NUM * CY_CAPSENSE_BYTE_IN_32_BIT);
(void)memset(&ptrBaseCfg->mode, 0, sizeof(cy_stc_msc_mode_config_t) * CY_MSC_MODES_NUM);
/*
* MODE CONFIGURATION
*/
idCounter = 0u;
ptrMapping = &ptrIntrCxt->mapSenseMethod[0u];
for (i = 0u; i < CY_CAPSENSE_REG_MODE_NUMBER; i++)
{
ptrMapping[i] = CY_CAPSENSE_REG_MODE_UNDEFINED;
}
if (0u == context->ptrCommonConfig->numWd)
{
capStatus |= CY_CAPSENSE_STATUS_BAD_CONFIG;
}
/* For each widget */
for (i = 0u; i < context->ptrCommonConfig->numWd; i++)
{
cdacDitherEnabled = context->ptrWdContext[i].cdacDitherEn;
/* Calculate REG_MODE value */
snsMethod = context->ptrWdConfig[i].senseMethod;
snsMethodInternal = snsMethod - 1u;
if (CY_CAPSENSE_ENABLE == cdacDitherEnabled)
{
/* Shift sense mode to cdac dither enabled modes */
snsMethodInternal += CY_CAPSENSE_REG_MODE_DITHERING;
}
/* If a method is a new method then register the method */
if (ptrMapping[snsMethodInternal] == CY_CAPSENSE_REG_MODE_UNDEFINED)
{
if (CY_MSC_SENSE_MODE_NUMBER < idCounter)
{
capStatus |= CY_CAPSENSE_STATUS_CONFIG_OVERFLOW;
break;
}
else
{
ptrMapping[snsMethodInternal] = (uint8_t)idCounter;
ptrBaseCfg->mode[idCounter] = ptrTemplateCfg->mode[snsMethodInternal];
#if (CY_CAPSENSE_SENSOR_CONNECTION_MODE == CY_CAPSENSE_AMUX_SENSOR_CONNECTION_METHOD)
#if (CY_CAPSENSE_ENABLE == CY_CAPSENSE_CSX_EN)
if (CY_CAPSENSE_CSX_GROUP == snsMethod)
{
ptrBaseCfg->mode[idCounter].senseDutyCtl = CY_CAPSENSE_FW_CSX_AMUX_MODE_SENSE_DUTY_CTL_VALUE;
}
#endif
#if (CY_CAPSENSE_ENABLE == CY_CAPSENSE_CSD_EN)
if (CY_CAPSENSE_CSD_GROUP == snsMethod)
{
ptrBaseCfg->mode[idCounter].senseDutyCtl = 0u;
}
#endif
#endif
if ((CY_CAPSENSE_MSC0_CMOD1PADD_PIN != ptrChConfig->pinCmod1) &&
(CY_CAPSENSE_MSC1_CMOD1PADD_PIN != ptrChConfig->pinCmod1))
{
ptrBaseCfg->mode[idCounter].swSelComp &= (~MSC_MODE_SW_SEL_COMP_CPCS1_Msk);
ptrBaseCfg->mode[idCounter].swSelComp &= (~MSC_MODE_SW_SEL_COMP_CMCS2_Msk);
ptrBaseCfg->mode[idCounter].swSelComp |= MSC_MODE_SW_SEL_COMP_CPCS3_Msk;
ptrBaseCfg->mode[idCounter].swSelComp |= MSC_MODE_SW_SEL_COMP_CMCS4_Msk;
ptrBaseCfg->mode[idCounter].swSelSh &= (~MSC_MODE_SW_SEL_SH_C1SHG_Msk);
ptrBaseCfg->mode[idCounter].swSelSh |= MSC_MODE_SW_SEL_SH_C3SHG_Msk;
}
#if (CY_CAPSENSE_ENABLE == CY_CAPSENSE_CSX_EN)
if (CY_CAPSENSE_CSX_GROUP == snsMethod)
{
#if (CY_CAPSENSE_SENSOR_CONNECTION_MODE == CY_CAPSENSE_AMUX_SENSOR_CONNECTION_METHOD)
ptrBaseCfg->mode[idCounter].swSelTop = CY_CAPSENSE_CSX_FW_AMUX_MODE_SW_SEL_TOP_VALUE;
#else
ptrBaseCfg->mode[idCounter].swSelTop = CY_CAPSENSE_CSX_FW_CTLMUX_MODE_SW_SEL_TOP_VALUE;
#endif
if (CY_CAPSENSE_SNS_CONNECTION_VDDA_BY_2 == ptrIntrCxt->intrCsxInactSnsConn)
{
/* Close the reference to filter switch */
ptrBaseCfg->mode[idCounter].swSelTop |= MSC_MODE_SW_SEL_TOP_RMF_Msk;
#if (CY_CAPSENSE_SENSOR_CONNECTION_MODE == CY_CAPSENSE_AMUX_SENSOR_CONNECTION_METHOD)
ptrBaseCfg->mode[idCounter].swSelSh = CY_CAPSENSE_FW_CSX_VDDA2_AMUX_MODE_SW_SEL_SH_VALUE;
#else
ptrBaseCfg->mode[idCounter].swSelSh = CY_CAPSENSE_FW_CSX_VDDA2_CTLMUX_MODE_SW_SEL_SH_VALUE;
#endif
}
}
#endif /* (CY_CAPSENSE_ENABLE == CY_CAPSENSE_CSX_EN) */
idCounter++;
}
}
}
ptrIntrCxt->numSenseMethod = (uint8_t)idCounter;
/*
* PINS CONFIGURATION
*/
for (i = 0u; i < CY_CAPSENSE_CTRLMUX_PIN_STATE_NUMBER; i++)
{
ptrBaseCfg->swSelCswFunc[i] = ptrTemplateCfg->swSelCswFunc[i];
}
#if ((CY_CAPSENSE_ENABLE == CY_CAPSENSE_CSD_EN) &&\
(CY_CAPSENSE_ENABLE == CY_CAPSENSE_CSD_SHIELD_EN))
if (CY_CAPSENSE_SHIELD_PASSIVE == context->ptrCommonConfig->csdShieldMode)
{
ptrBaseCfg->swSelCswFunc[CY_CAPSENSE_CTRLMUX_PIN_STATE_SHIELD] =
CY_CAPSENSE_FW_SHIELD_PASSIVE_CTRLMUX_REG_SW_SEL_CSW_VALUE;
}
#endif
/*
* CONFIGURATION FROM CAPSENSE™ DATA STRUCTURE
*/
/* Initialize interrupts for all enabled MSC channels */
#if (CY_CAPSENSE_SCAN_MODE_DMA_DRIVEN == CY_CAPSENSE_SCAN_MODE)
ptrBaseCfg->intrMask |= MSC_INTR_MASK_FRAME_Msk;
#else
ptrBaseCfg->intrMask |= MSC_INTR_MASK_SCAN_Msk;
#endif /* (CY_CAPSENSE_SCAN_MODE_DMA_DRIVEN == CY_CAPSENSE_SCAN_MODE) */
(void)ptrBaseCfg->intrMask;
/* Shielding is available in CSD only */
#if ((CY_CAPSENSE_ENABLE == CY_CAPSENSE_CSD_EN) &&\
(CY_CAPSENSE_ENABLE == CY_CAPSENSE_CSD_SHIELD_EN))
if (CY_CAPSENSE_REG_MODE_UNDEFINED != ptrMapping[CY_CAPSENSE_REG_MODE_CSD])
{
ptrBaseCfgMode = &ptrBaseCfg->mode[ptrMapping[CY_CAPSENSE_REG_MODE_CSD]];
Cy_CapSense_ApplyShieldConfig(ptrBaseCfgMode, context);
}
if (CY_CAPSENSE_REG_MODE_UNDEFINED != ptrMapping[CY_CAPSENSE_REG_MODE_CSD_DITHERING])
{
ptrBaseCfgMode = &ptrBaseCfg->mode[ptrMapping[CY_CAPSENSE_REG_MODE_CSD_DITHERING]];
Cy_CapSense_ApplyShieldConfig(ptrBaseCfgMode, context);
}
#endif
/* Generating the common configuration for the Compensation CDAC */
#if ((CY_CAPSENSE_ENABLE == CY_CAPSENSE_CSD_CDAC_COMP_USAGE) || \
(CY_CAPSENSE_ENABLE == CY_CAPSENSE_CSX_CDAC_COMP_USAGE))
ptrBaseCfg->ccompCdacCtl |= (uint32_t)ptrIntrCxt->proOffsetCdacComp << MSC_CCOMP_CDAC_CTL_SEL_CO_PRO_OFFSET_Pos;
#else
ptrBaseCfg->swSelCdacCo = 0u;
#endif
#if (CY_CAPSENSE_DISABLE != CY_CAPSENSE_CIC2_FILTER_EN)
/* Generating the common configuration for the CIC2 Filter */
ptrBaseCfg->filterCtl = 0x01uL << MSC_FILTER_CTL_FILTER_MODE_Pos;
#endif
/* Generating the common configuration for the control mux switch control */
#if (CY_CAPSENSE_SENSOR_CONNECTION_MODE == CY_CAPSENSE_CTRLMUX_SENSOR_CONNECTION_METHOD)
Cy_CapSense_GenerateCtrlMuxSwControl(chIndex, context);
#endif /* (CY_CAPSENSE_SENSOR_CONNECTION_MODE == CY_CAPSENSE_CTRLMUX_SENSOR_CONNECTION_METHOD) */
/* Generating the common configuration for the dithering CapDAC */
ptrBaseCfg->ditherCdacCtl = (uint32_t)context->ptrInternalContext->cdacDitherSeed |
((uint32_t)context->ptrInternalContext->cdacDitherPoly << MSC_DITHER_CDAC_CTL_LFSR_POLY_FL_Pos);
/* Configures synchronization signals */
/* Sync_Clock */
ptrBaseCfg->ctl &= ~MSC_CTL_CLK_SYNC_EN_Msk;
/* If SYNC_CLK is enabled, generates CLK_SYNC_EN only for the Master channel */
if ((((uint32_t)context->ptrCommonConfig->masterChannelId) == (chIndex + context->ptrCommonConfig->channelOffset)) &&
(CY_CAPSENSE_ENABLE == context->ptrCommonConfig->syncClockEn))
{
ptrBaseCfg->ctl |= (uint32_t)context->ptrCommonConfig->syncClockEn << MSC_CTL_CLK_SYNC_EN_Pos;
}
/* Frame Start */
ptrBaseCfg->ctl &= ~MSC_CTL_EXT_FRAME_START_EN_Msk;
/*
* If EXT_FRAME_START is enabled, generates EXT_FRAME_START_EN for all channels,
* except of the Master channel which is generating FRAME_START for all another channels
*/
if ((((uint32_t)context->ptrCommonConfig->masterChannelId) == (chIndex + context->ptrCommonConfig->channelOffset)) &&
(CY_CAPSENSE_ENABLE == context->ptrCommonConfig->syncFrameStartEn))
{
ptrBaseCfg->ctl |= (uint32_t)context->ptrCommonConfig->syncFrameStartEn << MSC_CTL_EXT_FRAME_START_EN_Pos;
}
/* Generating the multi-channel mode for each channel with updating the sensor control registers */
if (0u != context->ptrCommonConfig->syncMode)
{
context->ptrCommonConfig->ptrChConfig[chIndex].ptrHwBase->SNS_CTL =
((uint32_t)context->ptrCommonConfig->syncMode << MSC_SNS_CTL_MULTI_CH_MODE_Pos);
}
/* Generating the common configuration for the clock dithering */
ptrBaseCfg->sensePeriodCtl = ((uint32_t)context->ptrInternalContext->lfsrPoly << MSC_SENSE_PERIOD_CTL_LFSR_POLY_Pos) |
((uint32_t)context->ptrInternalContext->lfsrScale << MSC_SENSE_PERIOD_CTL_LFSR_SCALE_Pos);
/* Generating the common configuration for the number of the auto-resampling cycles and the counter behaviour when the
* RAW_COUNT exceeds 0xFFFF
*/
ptrBaseCfg->scanCtl1 &= ~MSC_SCAN_CTL1_NUM_AUTO_RESAMPLE_Msk;
ptrBaseCfg->scanCtl1 &= ~MSC_SCAN_CTL1_RAW_COUNT_MODE_Msk;
ptrBaseCfg->scanCtl1 |= (uint32_t)context->ptrCommonConfig->numBadScans << MSC_SCAN_CTL1_NUM_AUTO_RESAMPLE_Pos;
ptrBaseCfg->scanCtl1 |= (uint32_t)context->ptrCommonConfig->counterMode << MSC_SCAN_CTL1_RAW_COUNT_MODE_Pos;
/* Generating the common configuration for the number of epilogue cycles */
ptrBaseCfg->scanCtl2 &= ~MSC_SCAN_CTL2_NUM_EPI_CYCLES_Msk;
if (0u < ptrIntrCxt->numEpiCycles)
{
ptrBaseCfg->scanCtl2 |= (uint32_t)ptrIntrCxt->numEpiCycles << MSC_SCAN_CTL2_NUM_EPI_CYCLES_Pos;
}
else
{
ptrBaseCfg->scanCtl2 |= (uint32_t)(1uL << MSC_SCAN_CTL2_NUM_EPI_CYCLES_Pos);
}
/* Generating the common configuration for the system level chopping */
ptrBaseCfg->scanCtl2 &= ~MSC_SCAN_CTL2_CHOP_POL_Msk;
ptrBaseCfg->scanCtl2 |= (uint32_t)context->ptrCommonConfig->chopPolarity << MSC_SCAN_CTL2_CHOP_POL_Pos;
/* Generating the common configuration for the coarse initialization and coarse short phase */
ptrBaseCfg->initCtl1 &= ~MSC_INIT_CTL1_NUM_INIT_CMOD_12_RAIL_CYCLES_Msk;
ptrBaseCfg->initCtl1 &= ~MSC_INIT_CTL1_NUM_INIT_CMOD_12_SHORT_CYCLES_Msk;
ptrBaseCfg->initCtl2 &= ~MSC_INIT_CTL2_NUM_INIT_CMOD_34_RAIL_CYCLES_Msk;
ptrBaseCfg->initCtl2 &= ~MSC_INIT_CTL2_NUM_INIT_CMOD_34_SHORT_CYCLES_Msk;
if ((CY_CAPSENSE_MSC0_CMOD1PADD_PIN == ptrChConfig->pinCmod1) ||
(CY_CAPSENSE_MSC1_CMOD1PADD_PIN == ptrChConfig->pinCmod1))
{
ptrBaseCfg->initCtl1 |= (uint32_t)ptrIntrCxt->numCoarseInitChargeCycles << MSC_INIT_CTL1_NUM_INIT_CMOD_12_RAIL_CYCLES_Pos;
ptrBaseCfg->initCtl1 |= (uint32_t)ptrIntrCxt->numCoarseInitSettleCycles << MSC_INIT_CTL1_NUM_INIT_CMOD_12_SHORT_CYCLES_Pos;
ptrBaseCfg->initCtl3 |= CY_CAPSENSE_CMOD12_PAIR_SELECTION << MSC_INIT_CTL3_CMOD_SEL_Pos;
}
else
{
ptrBaseCfg->initCtl2 |= (uint32_t)ptrIntrCxt->numCoarseInitChargeCycles << MSC_INIT_CTL2_NUM_INIT_CMOD_34_RAIL_CYCLES_Pos;
ptrBaseCfg->initCtl2 |= (uint32_t)ptrIntrCxt->numCoarseInitSettleCycles << MSC_INIT_CTL2_NUM_INIT_CMOD_34_SHORT_CYCLES_Pos;
ptrBaseCfg->initCtl3 |= (uint32_t)CY_CAPSENSE_CMOD34_PAIR_SELECTION << MSC_INIT_CTL3_CMOD_SEL_Pos;
}
ptrBaseCfg->initCtl3 &= ~MSC_INIT_CTL3_NUM_PRO_OFFSET_CYCLES_Msk;
ptrBaseCfg->initCtl3 |= (uint32_t)ptrIntrCxt->numProOffsetCycles << MSC_INIT_CTL3_NUM_PRO_OFFSET_CYCLES_Pos;
/* Generating the common configuration for the number of sub-conversions to be run during PRO_DUMMY and PRO_WAIT phases. */
ptrBaseCfg->initCtl4 &= ~MSC_INIT_CTL4_NUM_PRO_DUMMY_SUB_CONVS_Msk;
ptrBaseCfg->initCtl4 &= ~MSC_INIT_CTL4_NUM_PRO_WAIT_CYCLES_Msk;
ptrBaseCfg->initCtl4 |= (uint32_t)context->ptrInternalContext->numFineInitCycles << MSC_INIT_CTL4_NUM_PRO_DUMMY_SUB_CONVS_Pos;
ptrBaseCfg->initCtl4 |= (uint32_t)context->ptrInternalContext->numFineInitWaitCycles << MSC_INIT_CTL4_NUM_PRO_WAIT_CYCLES_Pos;
return capStatus;
}
/*******************************************************************************
* Function Name: Cy_CapSense_GenerateSensorConfigValid
****************************************************************************//**
*
* Generates the configuration for registers that have to be configured to start
* a scan for a single sensor.
*
* \param scanSlot
* Slot to scan
*
* \param ptrSensorCfg
* Specifies the pointer to the sensor configuration to be filled.
*
* \param context
* The pointer to the CAPSENSE™ context structure \ref cy_stc_capsense_context_t.
*
* \return
* Returns the status of the operation:
* - CY_CAPSENSE_STATUS_SUCCESS - The operation is performed successfully.
*
*******************************************************************************/
cy_capsense_status_t Cy_CapSense_GenerateSensorConfigValid(
uint32_t scanSlot,
uint32_t * ptrSensorCfg,
cy_stc_capsense_context_t * context)
{
uint32_t wdIndex;
uint32_t widgetSenseMethod;
uint32_t snsMethodInternal;
cy_capsense_status_t capStatus = (uint32_t)CY_CAPSENSE_BAD_PARAM_E;
ptrSensorCfg[CY_CAPSENSE_SNS_SCAN_CTL_INDEX] = 0u;
ptrSensorCfg[CY_CAPSENSE_SNS_CDAC_CTL_INDEX] = 0u;
ptrSensorCfg[CY_CAPSENSE_SNS_CTL_INDEX] = 0u;
/* Sensor clock configuration */
Cy_CapSense_ConfigSensorClock(scanSlot, &ptrSensorCfg[0u], context);
/* CapDAC configuration */
capStatus = Cy_CapSense_GenerateCdacConfig(scanSlot, &ptrSensorCfg[0u], context);
/* CIC2 filter control */
ptrSensorCfg[CY_CAPSENSE_SNS_CTL_INDEX] &= ~MSC_SNS_CTL_DECIM_RATE_Msk;
wdIndex = context->ptrScanSlots[scanSlot].wdId;
#if (CY_CAPSENSE_DISABLE != CY_CAPSENSE_CIC2_FILTER_EN)
ptrSensorCfg[CY_CAPSENSE_SNS_CTL_INDEX] |= ((uint32_t)context->ptrWdContext[wdIndex].cicRate - 1u) << MSC_SNS_CTL_DECIM_RATE_Pos;
#endif
/* Update widget sense method */
snsMethodInternal = context->ptrWdConfig[wdIndex].senseMethod;
snsMethodInternal -= 1u;
if (CY_CAPSENSE_ENABLE == context->ptrWdContext[wdIndex].cdacDitherEn)
{
/* Shift sense mode to cdac dither enabled modes */
snsMethodInternal += CY_CAPSENSE_REG_MODE_DITHERING;
}
widgetSenseMethod = context->ptrInternalContext->mapSenseMethod[snsMethodInternal];
ptrSensorCfg[CY_CAPSENSE_SNS_CTL_INDEX] &= ~MSC_SNS_CTL_SENSE_MODE_SEL_Msk;
ptrSensorCfg[CY_CAPSENSE_SNS_CTL_INDEX] |= widgetSenseMethod << MSC_SNS_CTL_SENSE_MODE_SEL_Pos;
/* Multi-channel mode */
ptrSensorCfg[CY_CAPSENSE_SNS_CTL_INDEX] &= ~MSC_SNS_CTL_MULTI_CH_MODE_Msk;
ptrSensorCfg[CY_CAPSENSE_SNS_CTL_INDEX] |= (uint32_t)context->ptrCommonConfig->syncMode << MSC_SNS_CTL_MULTI_CH_MODE_Pos;
/* System level chopping */
ptrSensorCfg[CY_CAPSENSE_SNS_SCAN_CTL_INDEX] &= ~MSC_SNS_SCAN_CTL_NUM_CONV_Msk;
ptrSensorCfg[CY_CAPSENSE_SNS_SCAN_CTL_INDEX] |= ((uint32_t)context->ptrWdConfig[wdIndex].numChopCycles - 1u) << MSC_SNS_SCAN_CTL_NUM_CONV_Pos;
/* Number of sub-conversions */
ptrSensorCfg[CY_CAPSENSE_SNS_SCAN_CTL_INDEX] &= ~MSC_SNS_SCAN_CTL_NUM_SUB_CONVS_Msk;
ptrSensorCfg[CY_CAPSENSE_SNS_SCAN_CTL_INDEX] |= ((uint32_t)context->ptrWdContext[wdIndex].numSubConversions - 1u) << MSC_SNS_SCAN_CTL_NUM_SUB_CONVS_Pos;
ptrSensorCfg[CY_CAPSENSE_SNS_SCAN_CTL_INDEX] &= ~(MSC_SNS_SCAN_CTL_INIT_BYPASS_Msk);
if ((CY_CAPSENSE_ENABLE == context->ptrWdContext[wdIndex].coarseInitBypassEn) &&
((scanSlot % CY_CAPSENSE_SLOT_COUNT) != context->ptrWdConfig[wdIndex].firstSlotId))
{
ptrSensorCfg[CY_CAPSENSE_SNS_SCAN_CTL_INDEX] |= (MSC_SNS_SCAN_CTL_INIT_BYPASS_Msk);
}
ptrSensorCfg[CY_CAPSENSE_SNS_CTL_INDEX] |= (MSC_SNS_CTL_VALID_Msk);
ptrSensorCfg[CY_CAPSENSE_SNS_CTL_INDEX] |= (MSC_SNS_CTL_START_SCAN_Msk);
return capStatus;
}
/*******************************************************************************
* Function Name: Cy_CapSense_GenerateSensorConfig
****************************************************************************//**
*
* Generates configuration to configure registers to
* the scan of the single sensor in the specified slot of the specified channel.
*
* \param chIndex
* The specified channel index.
*
* \param scanSlot
* The specified slot index.
*
* \param ptrSensorCfg
* Specifies the pointer to the sensor configuration to be filled.
*
* \param context
* The pointer to the CAPSENSE™ context structure \ref cy_stc_capsense_context_t.
*
* \return
* Returns the status of the operation:
* - CY_CAPSENSE_STATUS_SUCCESS - The operation is performed successfully.
*
*******************************************************************************/
cy_capsense_status_t Cy_CapSense_GenerateSensorConfig(
uint32_t chIndex,
uint32_t scanSlot,
uint32_t * ptrSensorCfg,
cy_stc_capsense_context_t * context)
{
uint32_t wdIndex;
uint32_t slotIndex = scanSlot;
#if (CY_CAPSENSE_SENSOR_CONNECTION_MODE == CY_CAPSENSE_AMUX_SENSOR_CONNECTION_METHOD)
uint32_t nextChIndex;
#endif /* (CY_CAPSENSE_SENSOR_CONNECTION_MODE == CY_CAPSENSE_AMUX_SENSOR_CONNECTION_METHOD) */
cy_capsense_status_t capStatus = CY_CAPSENSE_STATUS_BAD_PARAM;
wdIndex = context->ptrScanSlots[scanSlot].wdId;
if ((wdIndex == CY_CAPSENSE_SLOT_EMPTY) ||
(wdIndex == CY_CAPSENSE_SLOT_SHIELD_ONLY) ||
(wdIndex == CY_CAPSENSE_SLOT_TX_ONLY))
{
#if (CY_CAPSENSE_SENSOR_CONNECTION_MODE == CY_CAPSENSE_CTRLMUX_SENSOR_CONNECTION_METHOD)
if (chIndex == 0u)
{
slotIndex = scanSlot + CY_CAPSENSE_SLOT_COUNT;
}
else
{
slotIndex = scanSlot - CY_CAPSENSE_SLOT_COUNT;
}
#else /* (CY_CAPSENSE_SENSOR_CONNECTION_MODE == CY_CAPSENSE_AMUX_SENSOR_CONNECTION_METHOD) */
nextChIndex = ((chIndex == 0u) ? 1u : 0u);
slotIndex = context->ptrActiveScanSns[chIndex].currentChannelSlotIndex + (nextChIndex * CY_CAPSENSE_SLOT_COUNT);
#endif /* (CY_CAPSENSE_SENSOR_CONNECTION_MODE == CY_CAPSENSE_CTRLMUX_SENSOR_CONNECTION_METHOD)*/
}
/* Generate proper config for sensor */
capStatus = Cy_CapSense_GenerateSensorConfigValid(slotIndex, ptrSensorCfg, context);
return capStatus;
}
/*******************************************************************************
* Function Name: Cy_CapSense_GenerateAllSensorConfig
****************************************************************************//**
*
* Generates configuration to configure registers to start
* a scan for all sensors of the specified channel.
*
* \param chId
* Channel ID
*
* \param ptrSensorCfg
* Specifies the pointer to the sensor configuration to be filled.
*
* \param context
* The pointer to the CAPSENSE™ context structure \ref cy_stc_capsense_context_t.
*
*******************************************************************************/
void Cy_CapSense_GenerateAllSensorConfig(
uint32_t chId,
uint32_t * ptrSensorCfg,
cy_stc_capsense_context_t * context)
{
uint32_t i = 0u;
uint32_t scanSlotIndex;
uint32_t scanSlotIndexValid;
uint32_t sensorCfgTmp[CY_MSC_6_SNS_REGS] = {0u, 0u, 0u, 0u, 0u, 0u};
uint32_t * ptrSensorCfgLocal = ptrSensorCfg;
#if (CY_CAPSENSE_SENSOR_CONNECTION_MODE == CY_CAPSENSE_CTRLMUX_SENSOR_CONNECTION_METHOD)
uint32_t snsMask;
uint32_t snsMaskInactive = 0u;
uint32_t snsFuncState;
uint32_t snsFuncStateSelfCap;
uint32_t snsFuncStateMutualCap;
uint32_t snsIndex;
uint32_t wdIndex;
uint32_t slotValue;
uint32_t widgetSenseGroup;
const cy_stc_capsense_electrode_config_t * eltdPinCfg;
#if (CY_CAPSENSE_DISABLE != CY_CAPSENSE_MULTI_PHASE_TX_ENABLED)
uint32_t j = 0u;
uint32_t pattern;
uint32_t snsMaskNegative;
uint32_t snsFuncStateNegative;
#endif
/* Get mask for all pins in control mux switch registers */
snsMaskInactive = context->ptrBaseFrameContext[chId].cswCtl;
/* Define mutual cap pin state */
snsFuncStateMutualCap = CY_CAPSENSE_CTRLMUX_PIN_STATE_GND;
switch (context->ptrInternalContext->intrCsxInactSnsConn)
{
case CY_CAPSENSE_SNS_CONNECTION_HIGHZ:
snsFuncStateMutualCap = CY_CAPSENSE_CTRLMUX_PIN_STATE_HIGH_Z;
break;
case CY_CAPSENSE_SNS_CONNECTION_VDDA_BY_2:
snsFuncStateMutualCap = CY_CAPSENSE_CTRLMUX_PIN_STATE_VDDA2;
break;
default:
/* No action for other connections */
break;
}
/* Define self cap pin state */
snsFuncStateSelfCap = CY_CAPSENSE_CTRLMUX_PIN_STATE_GND;
switch (context->ptrInternalContext->intrCsdInactSnsConn)
{
case CY_CAPSENSE_SNS_CONNECTION_HIGHZ:
snsFuncStateSelfCap = CY_CAPSENSE_CTRLMUX_PIN_STATE_HIGH_Z;
break;
case CY_CAPSENSE_SNS_CONNECTION_SHIELD:
snsFuncStateSelfCap = CY_CAPSENSE_CTRLMUX_PIN_STATE_SHIELD;
break;
default:
/* No action for other connections */
break;
}
#endif
for (scanSlotIndex = 0u; scanSlotIndex < CY_CAPSENSE_SLOT_COUNT; scanSlotIndex++)
{
scanSlotIndexValid = scanSlotIndex + ((chId + context->ptrCommonConfig->channelOffset) * CY_CAPSENSE_SLOT_COUNT);
(void)Cy_CapSense_GenerateSensorConfig((chId + context->ptrCommonConfig->channelOffset), scanSlotIndexValid, &sensorCfgTmp[0u], context);
/* Does this for Control Mux connection only */
#if (CY_CAPSENSE_SENSOR_CONNECTION_MODE == CY_CAPSENSE_CTRLMUX_SENSOR_CONNECTION_METHOD)
slotValue = context->ptrScanSlots[scanSlotIndexValid].wdId;
if (CY_CAPSENSE_SLOT_EMPTY == slotValue)
{
scanSlotIndexValid = (((chId + 1u) % CY_CAPSENSE_TOTAL_CH_NUMBER) * CY_CAPSENSE_SLOT_COUNT) +
scanSlotIndex;
wdIndex = context->ptrScanSlots[scanSlotIndexValid].wdId;
widgetSenseGroup = context->ptrWdConfig[wdIndex].senseMethod;
if (CY_CAPSENSE_CSD_GROUP == widgetSenseGroup)
{
snsFuncState = snsFuncStateSelfCap;
}
else
{
snsFuncState = snsFuncStateMutualCap;
}
/* INACTIVE SENSORS */
Cy_CapSense_CalculateMaskRegisters(snsMaskInactive, snsFuncState, &sensorCfgTmp[0u]);
}
else
{
if (CY_CAPSENSE_SLOT_SHIELD_ONLY <= slotValue)
{
scanSlotIndexValid = ((uint32_t)context->ptrScanSlots[scanSlotIndexValid].snsId *
CY_CAPSENSE_SLOT_COUNT) + scanSlotIndex;
}
snsIndex = context->ptrScanSlots[scanSlotIndexValid].snsId;
wdIndex = context->ptrScanSlots[scanSlotIndexValid].wdId;
widgetSenseGroup = context->ptrWdConfig[wdIndex].senseMethod;
snsFuncState = snsFuncStateMutualCap;
if (CY_CAPSENSE_CSD_GROUP == widgetSenseGroup)
{
snsFuncState = snsFuncStateSelfCap;
}
/* INACTIVE SENSORS */
Cy_CapSense_CalculateMaskRegisters(snsMaskInactive, snsFuncState, &sensorCfgTmp[0u]);
/* ACTIVE SELF-CAP SENSOR */
#if (CY_CAPSENSE_ENABLE == CY_CAPSENSE_CSD_EN)
if (CY_CAPSENSE_SLOT_SHIELD_ONLY > slotValue)
{
/* Initializes an active sensor (including ganged sensors) by SNS, RX or TX sensor state */
if (CY_CAPSENSE_CSD_GROUP == widgetSenseGroup)
{
snsMask = 0u;
snsFuncState = CY_CAPSENSE_CTRLMUX_PIN_STATE_SNS;
eltdPinCfg = &context->ptrWdConfig[wdIndex].ptrEltdConfig[snsIndex];
/* Proceed only if electrode configuration belongs to selected channel */
if ((chId + context->ptrCommonConfig->channelOffset) == eltdPinCfg->chId)
{
/* Loop through all pads for this electrode (ganged sensor) */
for (i = 0u; i < eltdPinCfg->numPins; i++)
{
snsMask |= 0x01uL << eltdPinCfg->ptrPin[i].padNumber;
}
Cy_CapSense_CalculateMaskRegisters(snsMask, snsFuncState, &sensorCfgTmp[0u]);
}
}
}
#endif /* (CY_CAPSENSE_ENABLE == CY_CAPSENSE_CSD_EN) */
/* ACTIVE MUTUAL-CAP SENSOR */
#if (CY_CAPSENSE_ENABLE == CY_CAPSENSE_CSX_EN)
if (CY_CAPSENSE_CSX_GROUP == widgetSenseGroup)
{
if (CY_CAPSENSE_SLOT_SHIELD_ONLY > slotValue)
{
/* RX ELECTRODE */
snsMask = 0u;
snsFuncState = CY_CAPSENSE_CTRLMUX_PIN_STATE_RX;
i = snsIndex / context->ptrWdConfig[wdIndex].numRows;
eltdPinCfg = &context->ptrWdConfig[wdIndex].ptrEltdConfig[i];
if ((chId + context->ptrCommonConfig->channelOffset) == eltdPinCfg->chId)
{
/* Loop through all pads for this electrode (ganged sensor) */
for (i = 0u; i < eltdPinCfg->numPins; i++)
{
snsMask |= 0x01uL << eltdPinCfg->ptrPin[i].padNumber;
}
Cy_CapSense_CalculateMaskRegisters(snsMask, snsFuncState, &sensorCfgTmp[0u]);
}
}
/* Handles multi-phase TX feature */
#if (CY_CAPSENSE_DISABLE != CY_CAPSENSE_MULTI_PHASE_TX_ENABLED)
if (context->ptrWdConfig[wdIndex].mpOrder >= CY_CAPSENSE_MPTX_MIN_ORDER)
{
/* Multiple TX ELECTRODES */
snsMask = 0u;
snsMaskNegative = 0u;
snsFuncState = CY_CAPSENSE_CTRLMUX_PIN_STATE_TX;
snsFuncStateNegative = CY_CAPSENSE_CTRLMUX_PIN_STATE_TX_NEGATIVE;
/* Finds the first sensor number in mptx group */
i = snsIndex - (snsIndex % context->ptrWdConfig[wdIndex].mpOrder);
/* Finds TX electrode of the first group sensor */
i = context->ptrWdConfig[wdIndex].numCols + (i % context->ptrWdConfig[wdIndex].numRows);
eltdPinCfg = &context->ptrWdConfig[wdIndex].ptrEltdConfig[i];
/* Finding the right vector / pattern for mptx operation */
pattern = context->ptrWdConfig[wdIndex].ptrMpTable->vector;
i = (snsIndex % context->ptrWdConfig[wdIndex].mpOrder);
if (0u != i)
{
pattern = (pattern >> i) | (pattern << (context->ptrWdConfig[wdIndex].mpOrder - i));
}
if (CY_CAPSENSE_MPTX_MAX_ORDER > context->ptrWdConfig[wdIndex].mpOrder)
{
pattern &= (0x01uL << context->ptrWdConfig[wdIndex].mpOrder) - 1u;
}
/* Loop through all involved mptx TX electrodes, positive and negative */
for (j = 0u; j < context->ptrWdConfig[wdIndex].mpOrder; j++)
{
if ((chId + context->ptrCommonConfig->channelOffset) == eltdPinCfg->chId)
{
if (0u != (pattern & 0x01u))
{
/* Loop through all pads for this electrode (ganged sensor) */
for (i = 0u; i < eltdPinCfg->numPins; i++)
{
snsMask |= 0x01uL << eltdPinCfg->ptrPin[i].padNumber;
}
}
else
{
/* Loop through all pads for this electrode (ganged sensor) */
for (i = 0u; i < eltdPinCfg->numPins; i++)
{
snsMaskNegative |= 0x01uL << eltdPinCfg->ptrPin[i].padNumber;
}
}
}
pattern >>= 0x01u;
eltdPinCfg++;
}
Cy_CapSense_CalculateMaskRegisters(snsMask, snsFuncState, &sensorCfgTmp[0u]);
Cy_CapSense_CalculateMaskRegisters(snsMaskNegative, snsFuncStateNegative, &sensorCfgTmp[0u]);
}
else
{
/* TX ELECTRODE */
snsMask = 0u;
snsFuncState = CY_CAPSENSE_CTRLMUX_PIN_STATE_TX;
i = context->ptrWdConfig[wdIndex].numCols +
(snsIndex % context->ptrWdConfig[wdIndex].numRows);
eltdPinCfg = &context->ptrWdConfig[wdIndex].ptrEltdConfig[i];
if ((chId + context->ptrCommonConfig->channelOffset) == eltdPinCfg->chId)
{
/* Loop through all pads for this electrode (ganged sensor) */
for (i = 0u; i < eltdPinCfg->numPins; i++)
{
snsMask |= 0x01uL << eltdPinCfg->ptrPin[i].padNumber;
}
Cy_CapSense_CalculateMaskRegisters(snsMask, snsFuncState, &sensorCfgTmp[0u]);
}
}
#else
/* TX ELECTRODE */
snsMask = 0u;
snsFuncState = CY_CAPSENSE_CTRLMUX_PIN_STATE_TX;
i = context->ptrWdConfig[wdIndex].numCols +
(snsIndex % context->ptrWdConfig[wdIndex].numRows);
eltdPinCfg = &context->ptrWdConfig[wdIndex].ptrEltdConfig[i];
if ((chId + context->ptrCommonConfig->channelOffset) == eltdPinCfg->chId)
{
/* Loop through all pads for this electrode (ganged sensor) */
for (i = 0u; i < eltdPinCfg->numPins; i++)
{
snsMask |= 0x01uL << eltdPinCfg->ptrPin[i].padNumber;
}
Cy_CapSense_CalculateMaskRegisters(snsMask, snsFuncState, &sensorCfgTmp[0u]);
}
#endif
}
#endif /* (CY_CAPSENSE_ENABLE == CY_CAPSENSE_CSX_EN) */
/* SHIELD ELECTRODE */
#if (CY_CAPSENSE_ENABLE == CY_CAPSENSE_CSD_SHIELD_EN)
if (0u < context->ptrCommonConfig->csdShieldNumPin)
{
snsMask = 0u;
/* Connect shield to CSX_ISC in CSX mode */
snsFuncState = (CY_CAPSENSE_CSD_GROUP == widgetSenseGroup) ?
CY_CAPSENSE_CTRLMUX_PIN_STATE_SHIELD :
snsFuncStateMutualCap;
for (i = 0u; i < context->ptrCommonConfig->csdShieldNumPin; i++)
{
if ((chId + context->ptrCommonConfig->channelOffset) == context->ptrShieldPinConfig[i].chId)
{
snsMask |= 0x01uL << context->ptrShieldPinConfig[i].padNumber;
}
}
Cy_CapSense_CalculateMaskRegisters(snsMask, snsFuncState, &sensorCfgTmp[0u]);
}
#endif
}
#endif /* (CY_CAPSENSE_SENSOR_CONNECTION_MODE == CY_CAPSENSE_CTRLMUX_SENSOR_CONNECTION_METHOD) */
/* Store results */
for (i = 0u; i < CY_MSC_6_SNS_REGS; i++)
{
ptrSensorCfgLocal[i] = sensorCfgTmp[i];
}
ptrSensorCfgLocal += CY_MSC_6_SNS_REGS;
}
}
#if (CY_CAPSENSE_SENSOR_CONNECTION_MODE == CY_CAPSENSE_CTRLMUX_SENSOR_CONNECTION_METHOD)
/*******************************************************************************
* Function Name: Cy_CapSense_CalculateMaskRegisters
****************************************************************************//**
*
* Calculates the mask for pins that have to be updated for Control MUX
* connection.
*
* \param mask
* Specifies the mask of pins that should be updated.
*
* \param funcState
* Specifies the pin state functionality.
*
* \param ptrCfg
* Specifies the pointer to the mask registers.
*
*******************************************************************************/
void Cy_CapSense_CalculateMaskRegisters(
uint32_t mask,
uint32_t funcState,
uint32_t * ptrCfg)
{
uint32_t * ptrCfgMask = ptrCfg;
ptrCfgMask[0u] &= ~mask;
ptrCfgMask[1u] &= ~mask;
ptrCfgMask[2u] &= ~mask;
if (0u != (funcState & 0x04u))
{
ptrCfgMask[0u] |= mask;
}
if (0u != (funcState & 0x02u))
{
ptrCfgMask[1u] |= mask;
}
if (0u != (funcState & 0x01u))
{
ptrCfgMask[2u] |= mask;
}
}
#endif /* (CY_CAPSENSE_SENSOR_CONNECTION_MODE == CY_CAPSENSE_CTRLMUX_SENSOR_CONNECTION_METHOD) */
/*******************************************************************************
* Function Name: Cy_CapSense_GenerateCdacConfig
****************************************************************************//**
*
* Generates the Cap DAC configuration for a selected sensor.
*
* \param scanSlot
* Slot to scan
*
* \param ptrSensorCfg
* Specifies the pointer to the sensor configuration to be filled.
*
* \param context
* The pointer to the CAPSENSE™ context structure \ref cy_stc_capsense_context_t.
*
* \return
* Returns the status of the operation:
* - CY_CAPSENSE_STATUS_SUCCESS - The operation is performed successfully.
*
*******************************************************************************/
cy_capsense_status_t Cy_CapSense_GenerateCdacConfig(
uint32_t scanSlot,
uint32_t * ptrSensorCfg,
const cy_stc_capsense_context_t * context)
{
cy_capsense_status_t capStatus = 0u;
const cy_stc_capsense_widget_config_t * ptrWdCfg;
uint32_t compDiv;
uint32_t wdIndex;
uint32_t snsIndex;
uint32_t cdacLfsrScale;
uint32_t snsCdacCtlReg = 0u;
#if ((CY_CAPSENSE_SENSOR_CONNECTION_MODE == CY_CAPSENSE_AMUX_SENSOR_CONNECTION_METHOD) ||\
(CY_CAPSENSE_ENABLE == CY_CAPSENSE_CSD_CDAC_COMP_EN) ||\
(CY_CAPSENSE_ENABLE == CY_CAPSENSE_CSX_CDAC_COMP_EN))
const cy_stc_capsense_sensor_context_t * ptrSnsCxt;
#endif
wdIndex = context->ptrScanSlots[scanSlot].wdId;
snsIndex = context->ptrScanSlots[scanSlot].snsId;
ptrWdCfg = &context->ptrWdConfig[wdIndex];
#if ((CY_CAPSENSE_SENSOR_CONNECTION_MODE == CY_CAPSENSE_AMUX_SENSOR_CONNECTION_METHOD) ||\
(CY_CAPSENSE_ENABLE == CY_CAPSENSE_CSD_CDAC_COMP_EN) ||\
(CY_CAPSENSE_ENABLE == CY_CAPSENSE_CSX_CDAC_COMP_EN))
ptrSnsCxt = &ptrWdCfg->ptrSnsContext[snsIndex];
#endif
/* Compensation CDAC Divider */
compDiv = context->ptrWdContext[wdIndex].cdacCompDivider;
compDiv = (compDiv > 0u) ? (compDiv - 1u) : 0u;
ptrSensorCfg[CY_CAPSENSE_SNS_SCAN_CTL_INDEX] &= ~MSC_SNS_SCAN_CTL_COMP_DIV_Msk;
ptrSensorCfg[CY_CAPSENSE_SNS_SCAN_CTL_INDEX] |= compDiv << MSC_SNS_SCAN_CTL_COMP_DIV_Pos;
/* Cap DAC dithering control */
snsCdacCtlReg = 0u;
snsCdacCtlReg |= MSC_SNS_CDAC_CTL_CLOCK_REF_RATE_Msk;
if (CY_CAPSENSE_ENABLE == ptrWdCfg->ptrWdContext->cdacDitherEn)
{
cdacLfsrScale = context->ptrWdContext[wdIndex].cdacDitherValue;
snsCdacCtlReg |= cdacLfsrScale << MSC_SNS_CDAC_CTL_LFSR_SCALE_FL_Pos;
snsCdacCtlReg |= MSC_SNS_CDAC_CTL_FL_EN_Msk;
}
#if (CY_CAPSENSE_SENSOR_CONNECTION_MODE == CY_CAPSENSE_AMUX_SENSOR_CONNECTION_METHOD)