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cy_capsense_structure.c
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/***************************************************************************//**
* \file cy_capsense_structure.c
* \version 6.10.0
*
* \brief
* This file defines the data structure global variables and provides the
* implementation for the functions of the Data Structure module.
*
********************************************************************************
* \copyright
* Copyright 2018-2025, 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 <stddef.h>
#include <string.h>
#include "cycfg_capsense_defines.h"
#include "cy_syslib.h"
#include "cy_utils.h"
#include "cy_capsense_common.h"
#include "cy_capsense_structure.h"
#include "cy_capsense_lib.h"
#include "cy_capsense_selftest.h"
#if (CY_CAPSENSE_PLATFORM_BLOCK_FOURTH_GEN)
#include "cy_csd.h"
#include "cy_capsense_sensing_v2.h"
#elif (CY_CAPSENSE_PLATFORM_BLOCK_FIFTH_GEN_LP)
#include "cy_msclp.h"
#include "cy_capsense_generator_lp.h"
#else /* (CY_CAPSENSE_PLATFORM_BLOCK_FIFTH_GEN) */
#include "cy_msc.h"
#include "cy_capsense_generator_v3.h"
#include "cy_capsense_sensing_v3.h"
#endif
#if (defined(CY_IP_MXCSDV2) || defined(CY_IP_M0S8CSDV2) || defined(CY_IP_M0S8MSCV3) || defined(CY_IP_M0S8MSCV3LP))
/*******************************************************************************
* Local definition
*******************************************************************************/
#define CY_CAPSENSE_DS_PARAM_TYPE_UINT8 (1u)
#define CY_CAPSENSE_DS_PARAM_TYPE_UINT16 (2u)
#define CY_CAPSENSE_DS_PARAM_TYPE_UINT32 (3u)
#define CY_CAPSENSE_UINT16_ALIGN_MASK (1u)
#define CY_CAPSENSE_UINT32_ALIGN_MASK (3u)
#define CY_CAPSENSE_PARAM_TYPE_OFFSET (24u)
#define CY_CAPSENSE_PARAM_TYPE_MASK (3uL << CY_CAPSENSE_PARAM_TYPE_OFFSET)
#define CY_CAPSENSE_PARAM_CRC_OFFSET (26u)
#define CY_CAPSENSE_PARAM_CRC_MASK (1uL << CY_CAPSENSE_PARAM_CRC_OFFSET)
#define CY_CAPSENSE_PARAM_WIDGET_OFFSET (16u)
#define CY_CAPSENSE_PARAM_WIDGET_MASK (0xFFuL << CY_CAPSENSE_PARAM_WIDGET_OFFSET)
#if (defined(CY_CAPSENSE_MULTI_PHASE_SELF_ENABLED))
#if (CY_CAPSENSE_ENABLE == CY_CAPSENSE_MULTI_PHASE_SELF_ENABLED)
#define CY_CAPSENSE_MPSC_EN (CY_CAPSENSE_ENABLE)
#else
#define CY_CAPSENSE_MPSC_EN (CY_CAPSENSE_DISABLE)
#endif
#else
#define CY_CAPSENSE_MPSC_EN (CY_CAPSENSE_DISABLE)
#endif
/*******************************************************************************
* Function Name: Cy_CapSense_IsAnyWidgetActive
****************************************************************************//**
*
* Reports whether any widget has detected touch.
*
* This function reports whether any widget has detected a touch by extracting
* information from the widget status registers. This function does
* not process widget data but extracts previously processed results
* from the \ref group_capsense_structures.
*
* \note For the fifth-generation low power CAPSENSE™ widgets
* of the \ref CY_CAPSENSE_WD_LOW_POWER_E type are not processed,
* its status is not taken into account.
*
* \param context
* The pointer to the CAPSENSE™ context structure \ref cy_stc_capsense_context_t.
*
* \return
* Returns the touch detection status of all the widgets:
* - Zero - No touch is detected in any of the widgets or sensors.
* - Non-zero - At least one widget or sensor has detected a touch.
*
*******************************************************************************/
uint32_t Cy_CapSense_IsAnyWidgetActive(const cy_stc_capsense_context_t * context)
{
uint32_t capStatus = 0u;
uint32_t wdIndex;
for (wdIndex = CY_CAPSENSE_TOTAL_WIDGET_COUNT; wdIndex-- > 0u;)
{
#if (CY_CAPSENSE_PLATFORM_BLOCK_FIFTH_GEN_LP)
if ((uint8_t)CY_CAPSENSE_WD_LOW_POWER_E != context->ptrWdConfig[wdIndex].wdType)
#endif /* CY_CAPSENSE_PLATFORM_BLOCK_FIFTH_GEN_LP */
{
capStatus |= (uint32_t)context->ptrWdContext[wdIndex].status & CY_CAPSENSE_WD_ACTIVE_MASK;
}
}
return capStatus;
}
#if (CY_CAPSENSE_PLATFORM_BLOCK_FIFTH_GEN_LP)
/*******************************************************************************
* Function Name: Cy_CapSense_IsAnyLpWidgetActive
****************************************************************************//**
*
* Reports whether any low power widget has detected a touch at the previous
* low power scan.
*
* This function reports whether any low power widget has detected a touch
* by extracting information from the common status register. The function does
* not process the widget data but extracts the result obtained at the previous
* low power widget scan. The result remains set up to the next low power widget
* scan and is reset with the low power scan start.
*
* \note
* This function is available only for the fifth-generation low power CAPSENSE™.
*
* \param context
* The pointer to the CAPSENSE™ context structure \ref cy_stc_capsense_context_t.
*
* \return
* Returns the touch detection status of all the widgets:
* - Zero - No touch is detected in any of the low power widgets or sensors
* - CY_CAPSENSE_MW_STATE_LP_ACTIVE_MASK - At least one low power widget or sensor
* has detected a touch at the previous scan
*
*******************************************************************************/
uint32_t Cy_CapSense_IsAnyLpWidgetActive(const cy_stc_capsense_context_t * context)
{
return ((uint32_t)context->ptrCommonContext->status & CY_CAPSENSE_MW_STATE_LP_ACTIVE_MASK);
}
#endif /* (CY_CAPSENSE_PLATFORM_BLOCK_FIFTH_GEN_LP) */
/*******************************************************************************
* Function Name: Cy_CapSense_IsWidgetActive
****************************************************************************//**
*
* Reports whether the specified widget detected touch on any of its sensors.
*
* This function reports whether the specified widget has detected a touch by
* extracting information from the widget status register.
* This function does not process widget data but extracts previously processed
* results from the \ref group_capsense_structures.
*
* \param widgetId
* Specifies the ID number of the widget. A macro for the widget ID can be found
* in the cycfg_capsense.h file defined as CY_CAPSENSE_<WIDGET_NAME>_WDGT_ID.
*
* \note For the fifth-generation low power CAPSENSE™ widgets
* of the \ref CY_CAPSENSE_WD_LOW_POWER_E type are not processed and a zero is returned.
*
* \param context
* The pointer to the CAPSENSE™ context structure \ref cy_stc_capsense_context_t.
*
* \return
* Returns the touch detection status of the specified widgets:
* - Zero - No touch is detected in the specified widget or a wrong widgetId
* is specified.
* - Non-zero if at least one sensor of the specified widget is active, i.e.
* a touch is detected.
*
*******************************************************************************/
uint32_t Cy_CapSense_IsWidgetActive(
uint32_t widgetId,
const cy_stc_capsense_context_t * context)
{
uint32_t capStatus = 0uL;
if (widgetId < CY_CAPSENSE_TOTAL_WIDGET_COUNT)
{
#if (CY_CAPSENSE_PLATFORM_BLOCK_FIFTH_GEN_LP)
if ((uint8_t)CY_CAPSENSE_WD_LOW_POWER_E != context->ptrWdConfig[widgetId].wdType)
#endif /* CY_CAPSENSE_PLATFORM_BLOCK_FIFTH_GEN_LP */
{
capStatus = (uint32_t)context->ptrWdContext[widgetId].status & CY_CAPSENSE_WD_ACTIVE_MASK;
}
}
return capStatus;
}
/*******************************************************************************
* Function Name: Cy_CapSense_IsSensorActive
****************************************************************************//**
*
* Reports whether the specified sensor in the widget is sensor detects a touch.
*
* This function reports whether the specified sensor in the widget has detected a
* touch by extracting information from the widget status register.
* This function does not process widget or sensor data but extracts previously
* processed results from the \ref group_capsense_structures.
*
* For proximity sensors, this function returns the proximity detection status.
* To get the touch status of proximity sensors, use the
* Cy_CapSense_IsProximitySensorActive() function.
*
* \param widgetId
* Specifies the ID number of the widget. A macro for the widget ID can be found
* in the cycfg_capsense.h file defined as CY_CAPSENSE_<WIDGET_NAME>_WDGT_ID.
*
* \note For the fifth-generation low power CAPSENSE™ widgets
* of the \ref CY_CAPSENSE_WD_LOW_POWER_E type are not processed and a zero is returned.
*
* \param sensorId
* Specifies the ID number of the sensor within the widget. A macro for the
* sensor ID within a specified widget can be found in the cycfg_capsense.h
* file defined as CY_CAPSENSE_<WIDGET_NAME>_SNS<SENSOR_NUMBER>_ID.
*
* \param context
* The pointer to the CAPSENSE™ context structure \ref cy_stc_capsense_context_t.
*
* \return
* Returns the touch detection status of the specified sensor/widget:
* - Zero if no touch is detected in the specified sensor/widget or a wrong
* widget ID/sensor ID is specified.
* - Non-zero if the specified sensor is active, i.e. touch is detected. If the
* specific sensor belongs to a proximity widget, the proximity detection
* status is returned.
*
*******************************************************************************/
uint32_t Cy_CapSense_IsSensorActive(
uint32_t widgetId,
uint32_t sensorId,
const cy_stc_capsense_context_t * context)
{
uint32_t capStatus = 0uL;
if ((widgetId < CY_CAPSENSE_TOTAL_WIDGET_COUNT) &&
(sensorId < context->ptrWdConfig[widgetId].numSns))
{
#if (CY_CAPSENSE_PLATFORM_BLOCK_FIFTH_GEN_LP)
if ((uint8_t)CY_CAPSENSE_WD_LOW_POWER_E != context->ptrWdConfig[widgetId].wdType)
#endif /* CY_CAPSENSE_PLATFORM_BLOCK_FIFTH_GEN_LP */
{
capStatus = context->ptrWdConfig[widgetId].ptrSnsContext[sensorId].status;
}
}
return capStatus;
}
#if (CY_CAPSENSE_DISABLE != CY_CAPSENSE_CSD_PROXIMITY_EN)
/*******************************************************************************
* Function Name: Cy_CapSense_IsProximitySensorActive
****************************************************************************//**
*
* Reports the status of the specified proximity widget/sensor.
*
* This function reports whether the specified proximity sensor has detected
* a touch or proximity event by extracting information from the widget
* status register. This function is used only with proximity widgets.
* This function does not process widget data but extracts previously processed
* results from the \ref group_capsense_structures.
*
* \param widgetId
* Specifies the ID number of the widget. A macro for the widget ID can be found
* in the cycfg_capsense.h file defined as CY_CAPSENSE_<WIDGET_NAME>_WDGT_ID.
*
* \param sensorId
* Specifies the ID number of the sensor within the widget. A macro for the
* sensor ID within a specified widget can be found in the cycfg_capsense.h
* file defined as CY_CAPSENSE_<WIDGET_NAME>_SNS<SENSOR_NUMBER>_ID.
*
* \param context
* The pointer to the CAPSENSE™ context structure \ref cy_stc_capsense_context_t.
*
* \return
* Returns the status of the specified sensor of the proximity widget. Zero
* indicates that no touch is detected in the specified sensor/widget or a
* wrong widgetId/proxId is specified.
* - Bits [31..2] are reserved.
* - Bit [1] indicates that a touch is detected.
* - Bit [0] indicates that a proximity is detected.
*
*******************************************************************************/
uint32_t Cy_CapSense_IsProximitySensorActive(
uint32_t widgetId,
uint32_t sensorId,
const cy_stc_capsense_context_t * context)
{
uint32_t capStatus = 0uL;
if (widgetId < CY_CAPSENSE_TOTAL_WIDGET_COUNT)
{
if ((uint8_t)CY_CAPSENSE_WD_PROXIMITY_E == context->ptrWdConfig[widgetId].wdType)
{
if (sensorId < context->ptrWdConfig[widgetId].numSns)
{
capStatus |= context->ptrWdConfig[widgetId].ptrSnsContext[sensorId].status;
}
}
}
return capStatus;
}
#endif /* (CY_CAPSENSE_DISABLE != CY_CAPSENSE_CSD_PROXIMITY_EN) */
#if ((CY_CAPSENSE_ENABLE == CY_CAPSENSE_TOUCHPAD_EN) || \
(CY_CAPSENSE_ENABLE == CY_CAPSENSE_MATRIX_EN) || \
(CY_CAPSENSE_ENABLE == CY_CAPSENSE_SLIDER_EN) || \
(CY_CAPSENSE_ENABLE == CY_CAPSENSE_LIQUID_LEVEL_EN))
/*******************************************************************************
* Function Name: Cy_CapSense_GetTouchInfo
****************************************************************************//**
*
* Reports the details of touch position detected on the specified touchpad,
* matrix buttons, slider or liquid level widgets.
*
* This function does not process widget data but extracts previously processed
* results from the \ref group_capsense_structures.
*
* \param widgetId
* Specifies the ID number of the widget. A macro for the widget ID can be found
* in the cycfg_capsense.h file defined as CY_CAPSENSE_<WIDGET_NAME>_WDGT_ID.
*
* \param context
* The pointer to the CAPSENSE™ context structure \ref cy_stc_capsense_context_t.
*
* \return
* Returns the pointer to widget cy_stc_capsense_touch_t structure that
* contains number of positions and data about each position.
*
*
*******************************************************************************/
cy_stc_capsense_touch_t * Cy_CapSense_GetTouchInfo(
uint32_t widgetId,
const cy_stc_capsense_context_t * context)
{
cy_stc_capsense_touch_t * ptrTouch = NULL;
const cy_stc_capsense_widget_config_t * ptrWdCfg;
if (widgetId < CY_CAPSENSE_TOTAL_WIDGET_COUNT)
{
ptrWdCfg = &context->ptrWdConfig[widgetId];
switch (ptrWdCfg->wdType)
{
case (uint8_t)CY_CAPSENSE_WD_TOUCHPAD_E:
case (uint8_t)CY_CAPSENSE_WD_MATRIX_BUTTON_E:
case (uint8_t)CY_CAPSENSE_WD_LINEAR_SLIDER_E:
case (uint8_t)CY_CAPSENSE_WD_RADIAL_SLIDER_E:
case (uint8_t)CY_CAPSENSE_WD_LIQUID_LEVEL_E:
ptrTouch = &ptrWdCfg->ptrWdContext->wdTouch;
break;
default:
/* No action on other widget types */
break;
}
}
return ptrTouch;
}
#endif /* ((CY_CAPSENSE_ENABLE == CY_CAPSENSE_TOUCHPAD_EN) || \
(CY_CAPSENSE_ENABLE == CY_CAPSENSE_MATRIX_EN) || \
(CY_CAPSENSE_ENABLE == CY_CAPSENSE_SLIDER_EN) || \
(CY_CAPSENSE_ENABLE == CY_CAPSENSE_LIQUID_LEVEL_EN)) */
/*******************************************************************************
* Function Name: Cy_CapSense_CheckConfigIntegrity
****************************************************************************//**
*
* Performs verification of CAPSENSE™ data structure initialization.
*
* \param context
* The pointer to the CAPSENSE™ context structure \ref cy_stc_capsense_context_t.
*
* \return status
* Returns status of operation:
* - Zero - Indicates successful initialization.
* - Non-zero - One or more errors occurred in the initialization process.
*
*******************************************************************************/
cy_capsense_status_t Cy_CapSense_CheckConfigIntegrity(const cy_stc_capsense_context_t * context)
{
cy_capsense_status_t capStatus = CY_CAPSENSE_STATUS_SUCCESS;
const cy_stc_capsense_common_config_t * ptrCommonCfg = context->ptrCommonConfig;
const cy_stc_capsense_common_context_t * ptrCommonCxt = context->ptrCommonContext;
const cy_stc_capsense_internal_context_t * ptrInternalCxt = context->ptrInternalContext;
const cy_stc_capsense_widget_config_t * ptrWdCfg = context->ptrWdConfig;
const cy_stc_capsense_widget_context_t * ptrWdCxt = context->ptrWdContext;
const cy_stc_capsense_pin_config_t * ptrPinCfg = context->ptrPinConfig;
const cy_stc_capsense_active_scan_sns_t * ptrActScanSns = context->ptrActiveScanSns;
if (ptrCommonCfg == NULL) {capStatus = CY_CAPSENSE_STATUS_BAD_DATA;}
if (ptrCommonCxt == NULL) {capStatus = CY_CAPSENSE_STATUS_BAD_DATA;}
if (ptrInternalCxt == NULL) {capStatus = CY_CAPSENSE_STATUS_BAD_DATA;}
if (ptrWdCfg == NULL) {capStatus = CY_CAPSENSE_STATUS_BAD_DATA;}
if (ptrWdCxt == NULL) {capStatus = CY_CAPSENSE_STATUS_BAD_DATA;}
if (ptrPinCfg == NULL) {capStatus = CY_CAPSENSE_STATUS_BAD_DATA;}
if (ptrActScanSns == NULL) {capStatus = CY_CAPSENSE_STATUS_BAD_DATA;}
return capStatus;
}
/*******************************************************************************
* Function Name: Cy_CapSense_GetCRC
****************************************************************************//**
*
* Calculates CRC for the specified buffer and length.
*
* This API is used for the CRC protection of a packet received from
* the CAPSENSE™ Tuner tool and for BIST operations.
* CRC polynomial is 0xAC9A. It has a Hamming distance 5 for data words
* up to 241 bits.
*
* Reference: "P. Koopman, T. Chakravarthy,
* "Cyclic Redundancy Code (CRC) Polynomial Selection for Embedded Networks",
* The International Conference on Dependable Systems and Networks, DSN-2004"
*
* \param ptrData
* The pointer to the data.
*
* \param len
* The length of the data in bytes.
*
* \return
* Returns a calculated CRC-16 value.
*
*******************************************************************************/
uint16_t Cy_CapSense_GetCRC(const uint8_t *ptrData, uint32_t len)
{
uint32_t idx;
uint32_t actualCrc = 0u;
uint32_t length = len;
const uint8_t * ptrDataLocal = ptrData;
const uint16_t crcTable[] =
{
0x0000u, 0xAC9Au, 0xF5AEu, 0x5934u, 0x47C6u, 0xEB5Cu, 0xB268u, 0x1EF2u,
0x8F8Cu, 0x2316u, 0x7A22u, 0xD6B8u, 0xC84Au, 0x64D0u, 0x3DE4u, 0x917Eu
};
for (;length-- > 0u;)
{
/* Process HI Nibble */
idx = ((actualCrc >> 12u) ^ (((uint32_t)*ptrDataLocal) >> 4u)) & 0xFLu;
actualCrc = crcTable[idx] ^ (actualCrc << 4u);
/* Process LO Nibble */
idx = ((actualCrc >> 12u) ^ (uint32_t)*ptrDataLocal) & 0xFLu;
actualCrc = crcTable[idx] ^ (actualCrc << 4u);
ptrDataLocal++;
}
return (uint16_t)actualCrc;
}
/*******************************************************************************
* Function Name: Cy_CapSense_GetCrcWidget
****************************************************************************//**
*
* Calculates CRC for the specified widget. This function implements the
* following functionality:
* - Fills the \ref cy_stc_capsense_widget_crc_data_t with 0.
* - Initializes fields of the \ref cy_stc_capsense_widget_crc_data_t with the
* data from corresponding fields of the \ref cy_stc_capsense_widget_context_t.
* - Executes the Cy_CapSense_GetCRC() routine for full
* \ref cy_stc_capsense_widget_crc_data_t, structure, including padding.
* If the tuning mode is set to smart sensing algorithm (full auto-tune)
* then the fields of the \ref cy_stc_capsense_widget_context_t that changing
* it's value in the run-time will be excluded from CRC calculation for the
* CSD and ISX widgets.
*
* \param widgetId
* Specifies the ID number of the widget.
* A macro for the widget ID can be found in the
* CAPSENSE™ Configuration header file (cycfg_capsense.h) defined as
* CY_CAPSENSE_<WidgetName>_WDGT_ID.
*
* \param context
* The pointer to the CAPSENSE™ context structure \ref cy_stc_capsense_context_t.
*
* \return
* Returns a calculated CRC-16 value.
*
*******************************************************************************/
uint16_t Cy_CapSense_GetCrcWidget(
uint32_t widgetId,
cy_stc_capsense_context_t * context)
{
uint16_t crcValue;
const cy_stc_capsense_widget_context_t * ptrWdCxt;
cy_stc_capsense_widget_crc_data_t crcDataVal;
const cy_stc_capsense_widget_config_t * ptrWdCfg = &context->ptrWdConfig[widgetId];
/* Get a pointer to the specified widget context structure */
ptrWdCxt = &context->ptrWdContext[widgetId];
(void)memset((void*)&crcDataVal, 0, sizeof(crcDataVal));
crcDataVal.fingerCapVal = ptrWdCxt->fingerCap;
crcDataVal.sigPFCVal = ptrWdCxt->sigPFC;
crcDataVal.lowBslnRstVal = ptrWdCxt->lowBslnRst;
crcDataVal.snsClkVal = ptrWdCxt->snsClk;
crcDataVal.rowSnsClkVal = ptrWdCxt->rowSnsClk;
crcDataVal.onDebounceVal = ptrWdCxt->onDebounce;
crcDataVal.snsClkSourceVal = ptrWdCxt->snsClkSource;
crcDataVal.maxRawCountVal = ptrWdCxt->maxRawCount;
crcDataVal.maxRawCountRowVal = ptrWdCxt->maxRawCountRow;
crcDataVal.bslnCoeffVal = ptrWdCxt->bslnCoeff;
#if (CY_CAPSENSE_ENABLE == CY_CAPSENSE_MPSC_EN)
if (ptrWdCfg->mpOrder >= CY_CAPSENSE_MPSC_MIN_ORDER)
{
crcDataVal.fingerThVal = ptrWdCxt->fingerTh;
crcDataVal.proxThVal = ptrWdCxt->proxTh;
crcDataVal.noiseThVal = ptrWdCxt->noiseTh;
crcDataVal.nNoiseThVal = ptrWdCxt->nNoiseTh;
crcDataVal.hysteresisVal = ptrWdCxt->hysteresis;
}
#endif
if ((CY_CAPSENSE_CSX_GROUP == ptrWdCfg->senseMethod) ||
((uint8_t)CY_CAPSENSE_WD_LOW_POWER_E == ptrWdCfg->wdType) ||
((uint8_t)CY_CAPSENSE_WD_LIQUID_LEVEL_E == ptrWdCfg->wdType) ||
((CY_CAPSENSE_CSD_GROUP == ptrWdCfg->senseMethod) && (CY_CAPSENSE_ENABLE != CY_CAPSENSE_SMARTSENSE_CSD_ACTIVE_FULL_EN)) ||
((CY_CAPSENSE_ISX_GROUP == ptrWdCfg->senseMethod) && (CY_CAPSENSE_ENABLE != CY_CAPSENSE_SMARTSENSE_ISX_ACTIVE_FULL_EN)))
{
crcDataVal.fingerThVal = ptrWdCxt->fingerTh;
crcDataVal.proxThVal = ptrWdCxt->proxTh;
crcDataVal.noiseThVal = ptrWdCxt->noiseTh;
crcDataVal.nNoiseThVal = ptrWdCxt->nNoiseTh;
crcDataVal.hysteresisVal = ptrWdCxt->hysteresis;
}
#if (CY_CAPSENSE_PLATFORM_BLOCK_FOURTH_GEN)
crcDataVal.resolutionVal = ptrWdCxt->resolution;
crcDataVal.idacModVal[0u] = ptrWdCxt->idacMod[0u];
crcDataVal.idacModVal[1u] = ptrWdCxt->idacMod[1u];
crcDataVal.idacModVal[2u] = ptrWdCxt->idacMod[2u];
crcDataVal.idacGainIndexVal = ptrWdCxt->idacGainIndex;
crcDataVal.rowIdacModVal[0u] = ptrWdCxt->rowIdacMod[0u];
crcDataVal.rowIdacModVal[1u] = ptrWdCxt->rowIdacMod[1u];
crcDataVal.rowIdacModVal[2u] = ptrWdCxt->rowIdacMod[2u];
#endif /* (CY_CAPSENSE_PLATFORM_BLOCK_FOURTH_GEN) */
#if (CY_CAPSENSE_PLATFORM_BLOCK_FIFTH_GEN)
crcDataVal.cdacDitherEnVal = ptrWdCxt->cdacDitherEn;
#endif /* (CY_CAPSENSE_PLATFORM_BLOCK_FIFTH_GEN) */
#if (CY_CAPSENSE_PLATFORM_BLOCK_FIFTH_GEN_LP)
crcDataVal.cicShiftVal = ptrWdCxt->cicShift;
crcDataVal.rowCicShiftVal = ptrWdCxt->rowCicShift;
#endif /* (CY_CAPSENSE_PLATFORM_BLOCK_FIFTH_GEN) */
#if ((CY_CAPSENSE_PLATFORM_BLOCK_FIFTH_GEN) || (CY_CAPSENSE_PLATFORM_BLOCK_FIFTH_GEN_LP))
crcDataVal.resolutionVal = ptrWdCxt->numSubConversions;
crcDataVal.cdacRefVal = ptrWdCxt->cdacRef;
crcDataVal.rowCdacRefVal = ptrWdCxt->rowCdacRef;
crcDataVal.cdacCompDividerVal = ptrWdCxt->cdacCompDivider;
crcDataVal.cicRateVal = ptrWdCxt->cicRate;
crcDataVal.lfsrBitsVal = ptrWdCxt->lfsrBits;
crcDataVal.cdacDitherValueVal = ptrWdCxt->cdacDitherValue;
crcDataVal.coarseInitBypassEnVal = ptrWdCxt->coarseInitBypassEn;
#endif /* (CY_CAPSENSE_PLATFORM_BLOCK_FIFTH_GEN) */
#if ((CY_CAPSENSE_PLATFORM_BLOCK_FIFTH_GEN_LP) && \
((CY_CAPSENSE_ENABLE == CY_CAPSENSE_CSD_CDAC_FINE_EN) || \
(CY_CAPSENSE_ENABLE == CY_CAPSENSE_CSX_CDAC_FINE_EN) || \
(CY_CAPSENSE_ENABLE == CY_CAPSENSE_ISX_CDAC_FINE_EN)))
crcDataVal.cdacFineVal = ptrWdCxt->cdacFine;
crcDataVal.rowCdacFineVal = ptrWdCxt->rowCdacFine;
#endif
crcValue = Cy_CapSense_GetCRC((uint8_t *)(&crcDataVal), sizeof(crcDataVal));
return crcValue;
}
/*******************************************************************************
* Function Name: Cy_CapSense_GetParam
****************************************************************************//**
*
* Gets a value of the specified parameter from the cy_capsense_tuner structure.
*
* This function gets the value of the specified parameter by the paramId
* argument. The paramId for each register of cy_capsense_tuner is available
* in the cycfg_capsense.h file as CY_CAPSENSE_<ParameterName>_PARAM_ID.
* The paramId is a special enumerated value generated by the CAPSENSE™
* Configurator tool. The format of paramId is as follows:
* 1. [ byte 3 byte 2 byte 1 byte 0 ]
* 2. [ RRRRRUTT IIIIIIII MMMMMMMM LLLLLLLL ]
* 3. U - indicates if the parameter affects the RAM Widget Object CRC.
* 4. T - encodes the parameter type:
* * 01b: uint8_t
* * 10b: uint16_t
* * 11b: uint32_t
* 5. I - specifies that the widgetId parameter belongs to.
* 6. M,L - the parameter offset MSB and LSB accordingly in cy_capsense_tuner.
* 7. R - reserved
*
* \param paramId
* Specifies the ID of parameter to get its value.
* A macro for the parameter ID can be found in the cycfg_capsense.h file
* defined as CY_CAPSENSE_<ParameterName>_PARAM_ID.
*
* \param value
* The pointer to a variable to be updated with the obtained value.
*
* \param ptrTuner
* The pointer to the cy_capsense_tuner variable of cy_stc_capsense_tuner_t.
* The cy_capsense_tuner is declared in CAPSENSE™ Configurator tool generated files:
* * cycfg_capsense.c/h
*
* \param context
* The pointer to the CAPSENSE™ context structure \ref cy_stc_capsense_context_t.
*
* \return
* Returns the status of the operation. If CY_CAPSENSE_STATUS_SUCCESS is not received,
* either paramId is invalid or ptrTuner is null.
*
*******************************************************************************/
cy_capsense_status_t Cy_CapSense_GetParam(
uint32_t paramId,
uint32_t * value,
const void * ptrTuner,
const cy_stc_capsense_context_t * context)
{
cy_capsense_status_t capStatus = CY_CAPSENSE_STATUS_BAD_PARAM;
uint32_t paramType;
uint32_t paramOffset;
const uint8_t * bytePtr;
const uint16_t * halfWordPtr;
const uint32_t * wordPtr;
(void)context;
if ((value != NULL) && (ptrTuner != NULL))
{
/* Check parameter type, offset alignment and read data */
paramType = (paramId & CY_CAPSENSE_PARAM_TYPE_MASK) >> CY_CAPSENSE_PARAM_TYPE_OFFSET;
paramOffset = (uint16_t)(paramId);
switch (paramType)
{
case CY_CAPSENSE_DS_PARAM_TYPE_UINT32:
if (0u == (paramOffset & CY_CAPSENSE_UINT32_ALIGN_MASK))
{
paramOffset >>= 2u;
wordPtr = (const uint32_t *)ptrTuner;
*value = (uint32_t)wordPtr[paramOffset];
capStatus = CY_CAPSENSE_STATUS_SUCCESS;
}
break;
case CY_CAPSENSE_DS_PARAM_TYPE_UINT16:
if (0u == (paramOffset & CY_CAPSENSE_UINT16_ALIGN_MASK))
{
paramOffset >>= 1u;
halfWordPtr = (const uint16_t *)ptrTuner;
*value = (uint32_t)halfWordPtr[paramOffset];
capStatus = CY_CAPSENSE_STATUS_SUCCESS;
}
break;
case CY_CAPSENSE_DS_PARAM_TYPE_UINT8:
bytePtr = (const uint8_t *)ptrTuner;
*value = (uint32_t)bytePtr[paramOffset];
capStatus = CY_CAPSENSE_STATUS_SUCCESS;
break;
default:
/* No action on other parameter types */
break;
}
}
return capStatus;
}
/*******************************************************************************
* Function Name: Cy_CapSense_SetParam
****************************************************************************//**
*
* Sets a new value for the specified parameter in cy_capsense_tuner structure.
*
* This function sets the value of the specified parameter by the paramId
* argument. The paramId for each register of cy_capsense_tuner is available
* in the cycfg_capsense.h file as CY_CAPSENSE_<ParameterName>_PARAM_ID.
* The paramId is a special enumerated value generated by the CAPSENSE™
* Configurator tool. The format of paramId is as follows:
* 1. [ byte 3 byte 2 byte 1 byte 0 ]
* 2. [ RRRRRUTT IIIIIIII MMMMMMMM LLLLLLLL ]
* 3. U - indicates if the parameter affects the RAM Widget Object CRC.
* 4. T - encodes the parameter type:
* * 01b: uint8_t
* * 10b: uint16_t
* * 11b: uint32_t
* 5. I - specifies that the widgetId parameter belongs to
* 6. M,L - the parameter offset MSB and LSB accordingly in cy_capsense_tuner.
* 7. R - reserved
*
* This function writes specified value into the desired register without
* other registers update. It is application layer responsibility to keep all
* the data structure registers aligned. Repeated call of
* Cy_CapSense_Enable() function helps aligning dependent register values.
*
* This function updates also the widget CRC field if Built-in Self-test
* is enabled and paramId requires that.
*
* \param paramId
* Specifies the ID of parameter to set its value.
* A macro for the parameter ID can be found in the cycfg_capsense.h file
* defined as CY_CAPSENSE_<ParameterName>_PARAM_ID.
*
* \param value
* Specifies the new parameter's value.
*
* \param ptrTuner
* The pointer to the cy_capsense_tuner variable of cy_stc_capsense_tuner_t.
* The cy_capsense_tuner is declared in CAPSENSE™ Configurator tool generated files:
* * cycfg_capsense.c/h
*
* \param context
* The pointer to the CAPSENSE™ context structure \ref cy_stc_capsense_context_t.
*
* \return
* Returns the status of the operation. If CY_CAPSENSE_STATUS_SUCCESS is not received,
* the parameter was not updated with the new value, either paramId is invalid
* or ptrTuner is null.
*
*******************************************************************************/
cy_capsense_status_t Cy_CapSense_SetParam(
uint32_t paramId,
uint32_t value,
void * ptrTuner,
cy_stc_capsense_context_t * context)
{
cy_capsense_status_t capStatus = CY_CAPSENSE_STATUS_SUCCESS;
uint32_t paramOffset;
uint32_t paramType;
#if ((CY_CAPSENSE_ENABLE == CY_CAPSENSE_BIST_EN) &&\
(CY_CAPSENSE_ENABLE == CY_CAPSENSE_TST_WDGT_CRC_EN))
uint32_t paramCrc;
uint32_t paramWidget;
#endif /* ((CY_CAPSENSE_ENABLE == CY_CAPSENSE_BIST_EN) &&
(CY_CAPSENSE_ENABLE == CY_CAPSENSE_TST_WDGT_CRC_EN)) */
uint8_t * bytePtr;
uint16_t * halfWordPtr;
uint32_t * wordPtr;
if ((context == NULL) || (ptrTuner == NULL))
{
capStatus = CY_CAPSENSE_STATUS_BAD_PARAM;
}
/* Parse paramId */
if (CY_CAPSENSE_STATUS_SUCCESS == capStatus)
{
paramOffset = (uint16_t)(paramId);
paramType = (paramId & CY_CAPSENSE_PARAM_TYPE_MASK) >> CY_CAPSENSE_PARAM_TYPE_OFFSET;
#if ((CY_CAPSENSE_ENABLE == CY_CAPSENSE_BIST_EN) &&\
(CY_CAPSENSE_ENABLE == CY_CAPSENSE_TST_WDGT_CRC_EN))
paramCrc = (paramId & CY_CAPSENSE_PARAM_CRC_MASK) >> CY_CAPSENSE_PARAM_CRC_OFFSET;
paramWidget = (paramId & CY_CAPSENSE_PARAM_WIDGET_MASK) >> CY_CAPSENSE_PARAM_WIDGET_OFFSET;
if ((paramWidget > context->ptrCommonConfig->numWd) && (0u != paramCrc))
{
capStatus = CY_CAPSENSE_STATUS_BAD_PARAM;
}
#endif /* ((CY_CAPSENSE_ENABLE == CY_CAPSENSE_BIST_EN) &&
(CY_CAPSENSE_ENABLE == CY_CAPSENSE_TST_WDGT_CRC_EN)) */
}
/* Check parameter type, offset alignment, write the specified parameter */
if (CY_CAPSENSE_STATUS_SUCCESS == capStatus)
{
switch (paramType)
{
case CY_CAPSENSE_DS_PARAM_TYPE_UINT32:
if (0u == (paramOffset & CY_CAPSENSE_UINT32_ALIGN_MASK))
{
paramOffset >>= 2u;
wordPtr = (uint32_t *)ptrTuner;
wordPtr[paramOffset] = value;
}
break;
case CY_CAPSENSE_DS_PARAM_TYPE_UINT16:
if (0u == (paramOffset & CY_CAPSENSE_UINT16_ALIGN_MASK))
{
paramOffset >>= 1u;
halfWordPtr = (uint16_t *)ptrTuner;
halfWordPtr[paramOffset] = (uint16_t)value;
}
break;
case CY_CAPSENSE_DS_PARAM_TYPE_UINT8:
bytePtr = (uint8_t *)ptrTuner;
bytePtr[paramOffset] = (uint8_t)value;
break;
default:
capStatus = CY_CAPSENSE_STATUS_BAD_PARAM;
break;
}
}
/* Update widget CRC if needed */
#if ((CY_CAPSENSE_ENABLE == CY_CAPSENSE_BIST_EN) &&\
(CY_CAPSENSE_ENABLE == CY_CAPSENSE_TST_WDGT_CRC_EN))
if ((CY_CAPSENSE_STATUS_SUCCESS == capStatus) &&
(0u != paramCrc))
{
Cy_CapSense_UpdateCrcWidget(paramWidget, context);
}
#endif /* ((CY_CAPSENSE_ENABLE == CY_CAPSENSE_BIST_EN) &&
(CY_CAPSENSE_ENABLE == CY_CAPSENSE_TST_WDGT_CRC_EN)) */
return capStatus;
}
/*******************************************************************************
* Function Name: Cy_CapSense_SetWidgetStatus
****************************************************************************//**
*
* Performs configuring of the selected widget.
*
* This function performs customized widget status configuration
* by the mode parameter. There are two general use cases for this function:
* 1. Make the specified widget Enabled/Disabled. This status is intended
* to define a set of widgets to be scanned/processed from the application
* layer.
* 2. Make the specified widget Working/Non-working. This status is
* integrated into the built-in self-test (BIST) library. If a test detects
* non-working widget, that widget status is set to non-working automatically
* by CAPSENSE™. BIST never resets a widget working mask and the user
* makes a decision what to do next with this non-working widget.
*
* Although other statuses can be changed by this function, this is not
* recommended to avoid impact on CAPSENSE™ operation and
* is needed to implement only specific use cases.
*
* By default, all widgets are enabled and working during CAPSENSE™
* initialization. All disabled or non-working widgets are excluded
* from scanning and processing.
*
* Excluding a widget from a scanning flow happens
* immediately by re-generation a new scanning frame. This function does it
* for optimization, which means that scanning functions save
* CPU time by checking if any widget status was changed.
*
* Excluding from processing flow happens inside the process functions since they
* perform processing by widgets and not by slots. Therefore, changing
* the widget status should happen before a new scan and/or after processing.
*
* The Cy_CapSense_ProcessWidgetExt() and Cy_CapSense_ProcessSensorExt()
* functions ignore widget disable and non-working statuses and perform
* processing based on specified mode provided to those functions.
*
* The function also checks if there is at least one enabled and working widget.
* If no valid widgets are left for scanning, the function returns
* CY_CAPSENSE_STATUS_BAD_CONFIG separately for active and low-power
* widgets due to these groups' independent scanning frames.
*
* \note
* For the fifth generation and fifth-generation low power CAPSENSE™,
* if the specified widget has the enabled multi-frequency scan feature,
* then the status configuration happens to all the joined widgets:
* * Sub-widget channel 2
* * Sub-widget channel 1
* * Main widget channel 0
*
* \param widgetId
* Specifies the widget ID number. A macro for the widget ID can be found
* in the cycfg_capsense.h file defined as CY_CAPSENSE_<WIDGET_NAME>_WDGT_ID.
*
* \param mode
* Specifies the bit mask of widget status to be configured. It is allowed
* to configure several bits simultaneously.
* 1. Bit [0] - CY_CAPSENSE_WD_ACTIVE_MASK
* 2. Bit [1] - CY_CAPSENSE_WD_ENABLE_MASK
* 3. Bit [2] - CY_CAPSENSE_WD_WORKING_MASK
* 4. Bit [3] - CY_CAPSENSE_WD_MAXCOUNT_CALC_MASK
* 5. Bit [4] - CY_CAPSENSE_WD_MAXCOUNT_ROW_CALC_MASK.
*
* \param mask
* Specifies the value of widget status field to be configured. All bit values
* not set by the mask passed as the mode parameter are ignored.
*
* \param context
* The pointer to the CAPSENSE™ context
* structure \ref cy_stc_capsense_context_t.
*
* \return
* Returns the status of the widget processing operation:
* - CY_CAPSENSE_STATUS_SUCCESS - The operation is successful.
* - CY_CAPSENSE_STATUS_BAD_PARAM - The input parameter is invalid.
*
*******************************************************************************/
cy_capsense_status_t Cy_CapSense_SetWidgetStatus(
uint32_t widgetId,
uint32_t mode,
uint32_t mask,
cy_stc_capsense_context_t * context)
{
cy_capsense_status_t capStatus = CY_CAPSENSE_STATUS_BAD_CONFIG;
#if (((CY_CAPSENSE_PLATFORM_BLOCK_FIFTH_GEN) || (CY_CAPSENSE_PLATFORM_BLOCK_FIFTH_GEN_LP)) &&\
(CY_CAPSENSE_DISABLE != CY_CAPSENSE_MULTI_FREQUENCY_WIDGET_EN))
const cy_stc_capsense_widget_config_t * ptrWdCfg = context->ptrWdConfig;
uint32_t wdIndex;
#endif
/* Check parameter validity */
if (widgetId < CY_CAPSENSE_TOTAL_WIDGET_COUNT)
{
capStatus = CY_CAPSENSE_STATUS_SUCCESS;
#if (CY_CAPSENSE_PLATFORM_BLOCK_FOURTH_GEN)
context->ptrWdContext[widgetId].status &= (uint8_t)~(uint8_t)mode;
context->ptrWdContext[widgetId].status |= ((uint8_t)mask & (uint8_t)mode);
(void)Cy_CapSense_SwitchSensingMode(CY_CAPSENSE_UNDEFINED_GROUP, context);
#else
/* Update scan flags for MSC platforms */
#if (CY_CAPSENSE_PLATFORM_BLOCK_FIFTH_GEN_LP)
context->ptrInternalContext->repeatScanEn = CY_CAPSENSE_DISABLE;
context->ptrCommonContext->status &= (uint32_t)~((uint32_t)CY_CAPSENSE_MW_STATE_WD_SCAN_MASK);
#endif
#if (CY_CAPSENSE_ENABLE == CY_CAPSENSE_MULTI_FREQUENCY_WIDGET_EN)
/* Checks if MFS is enabled for particular widget */
if (0u != (ptrWdCfg->mfsConfig & CY_CAPSENSE_MFS_EN_MASK))
{
wdIndex = widgetId - (((uint32_t)ptrWdCfg->mfsConfig & CY_CAPSENSE_MFS_WIDGET_FREQ_ALL_CH_MASK) >> CY_CAPSENSE_MFS_WIDGET_FREQ_ALL_CH_POS);
context->ptrWdContext[wdIndex].status &= (uint8_t)~(uint8_t)mode;
context->ptrWdContext[wdIndex].status |= ((uint8_t)mask & (uint8_t)mode);
context->ptrWdContext[wdIndex + CY_CAPSENSE_MFS_CH1_INDEX].status &= (uint8_t)~(uint8_t)mode;
context->ptrWdContext[wdIndex + CY_CAPSENSE_MFS_CH1_INDEX].status |= ((uint8_t)mask & (uint8_t)mode);
context->ptrWdContext[wdIndex + CY_CAPSENSE_MFS_CH2_INDEX].status &= (uint8_t)~(uint8_t)mode;
context->ptrWdContext[wdIndex + CY_CAPSENSE_MFS_CH2_INDEX].status |= ((uint8_t)mask & (uint8_t)mode);
#if (CY_CAPSENSE_PLATFORM_BLOCK_FIFTH_GEN_LP)
Cy_CapSense_SetSnsFrameValidity(wdIndex, context);
Cy_CapSense_SetSnsFrameValidity(wdIndex + CY_CAPSENSE_MFS_CH1_INDEX, context);
Cy_CapSense_SetSnsFrameValidity(wdIndex + CY_CAPSENSE_MFS_CH2_INDEX, context);
#endif
}
else
{
context->ptrWdContext[widgetId].status &= (uint8_t)~(uint8_t)mode;
context->ptrWdContext[widgetId].status |= ((uint8_t)mask & (uint8_t)mode);
#if (CY_CAPSENSE_PLATFORM_BLOCK_FIFTH_GEN_LP)
Cy_CapSense_SetSnsFrameValidity(widgetId, context);
#endif
}
#else
context->ptrWdContext[widgetId].status &= (uint8_t)~(uint8_t)mode;
context->ptrWdContext[widgetId].status |= ((uint8_t)mask & (uint8_t)mode);
#if (CY_CAPSENSE_PLATFORM_BLOCK_FIFTH_GEN_LP)
Cy_CapSense_SetSnsFrameValidity(widgetId, context);
#endif
#endif
#if (CY_CAPSENSE_PLATFORM_BLOCK_FIFTH_GEN)
context->ptrInternalContext->scanSingleSlot = CY_CAPSENSE_SCAN_MULTIPLE_SLOT;
#if (CY_CAPSENSE_SCAN_MODE_DMA_DRIVEN == CY_CAPSENSE_SCAN_MODE)
(void)Cy_CapSense_ConfigureDmaArrays(context);
#endif
#endif
#endif
}
return capStatus;
}
#if (CY_CAPSENSE_PLATFORM_BLOCK_FIFTH_GEN_LP)
/*******************************************************************************
* Function Name: Cy_CapSense_SetSnsFrameValidity
****************************************************************************//**
*
* Performs sensor frame update for the specified widget.
*
* For the fifth generation and fifth-generation low power CAPSENSE™,
* if the specified widget has the enabled multi-frequency scan feature,
* then the frame update happens to the specified widget Id only.
*
* \param widgetId
* Specifies the widget ID number. A macro for the widget ID can be found
* in the cycfg_capsense.h file defined as CY_CAPSENSE_<WIDGET_NAME>_WDGT_ID.
*
* \param context
* The pointer to the CAPSENSE™ context
* structure \ref cy_stc_capsense_context_t.
*
*******************************************************************************/
void Cy_CapSense_SetSnsFrameValidity(
uint32_t widgetId,
cy_stc_capsense_context_t * context)
{
uint32_t wdStatus = 0u;