/* * Copyright (c) 2016, Freescale Semiconductor, Inc. * Copyright 2016-2017 NXP * All rights reserved. * * SPDX-License-Identifier: BSD-3-Clause */ #ifndef _FSL_TSC_H_ #define _FSL_TSC_H_ #include "fsl_common.h" /*! * @addtogroup tsc * @{ */ /******************************************************************************* * Definitions ******************************************************************************/ /*! @brief TSC driver version */ #define FSL_TSC_DRIVER_VERSION (MAKE_VERSION(2, 0, 1)) /*!< Version 2.0.1. */ /*! * @ Controller detection mode. */ typedef enum _tsc_detection_mode { kTSC_Detection4WireMode = 0U, /*!< 4-Wire Detection Mode. */ kTSC_Detection5WireMode = 1U, /*!< 5-Wire Detection Mode. */ } tsc_detection_mode_t; /*! * @ Coordinate value mask. */ typedef enum _tsc_corrdinate_value_selection { kTSC_XCoordinateValueSelection = 0U, /*!< X coordinate value is selected. */ kTSC_YCoordinateValueSelection = 1U, /*!< Y coordinate value is selected. */ } tsc_corrdinate_value_selection_t; /*! * @ Interrupt signal enable/disable mask. */ enum _tsc_interrupt_signal_mask { kTSC_IdleSoftwareSignalEnable = TSC_INT_SIG_EN_IDLE_SW_SIG_EN_MASK, /*!< Enable the interrupt signal when the controller has return to idle status. The signal is only valid after using TSC_ReturnToIdleStatus API. */ kTSC_ValidSignalEnable = TSC_INT_SIG_EN_VALID_SIG_EN_MASK, /*!< Enable the interrupt signal when controller receives a detect signal after measurement. */ kTSC_DetectSignalEnable = TSC_INT_SIG_EN_DETECT_SIG_EN_MASK, /*!< Enable the interrupt signal when controller receives a detect signal. */ kTSC_MeasureSignalEnable = TSC_INT_SIG_EN_MEASURE_SIG_EN_MASK, /*!< Enable the interrupt signal after the touch detection which follows measurement. */ }; /*! * @ Interrupt enable/disable mask. */ enum _tsc_interrupt_mask { kTSC_IdleSoftwareInterruptEnable = TSC_INT_EN_IDLE_SW_INT_EN_MASK, /*!< Enable the interrupt when the controller has return to idle status. The interrupt is only valid after using TSC_ReturnToIdleStatus API. */ kTSC_DetectInterruptEnable = TSC_INT_EN_DETECT_INT_EN_MASK, /*!< Enable the interrupt when controller receive a detect signal. */ kTSC_MeasureInterruptEnable = TSC_INT_EN_MEASURE_INT_EN_MASK, /*!< Enable the interrupt after the touch detection which follows measurement. */ }; /*! * @ Interrupt Status flag mask. */ enum _tsc_interrupt_status_flag_mask { kTSC_IdleSoftwareFlag = TSC_INT_STATUS_IDLE_SW_MASK, /*!< This flag is set if the controller has return to idle status. The flag is only valid after using TSC_ReturnToIdleStatus API. */ kTSC_ValidSignalFlag = TSC_INT_STATUS_VALID_MASK, /*!< This flag is set if controller receives a detect signal after measurement. */ kTSC_DetectSignalFlag = TSC_INT_STATUS_DETECT_MASK, /*!< This flag is set if controller receives a detect signal. */ kTSC_MeasureSignalFlag = TSC_INT_STATUS_MEASURE_MASK, /*!< This flag is set after the touch detection which follows measurement. Note: Valid signal falg will be cleared along with measure signal flag. */ }; /*! * @ ADC status flag mask. */ enum _tsc_adc_status_flag_mask { kTSC_ADCCOCOSignalFlag = TSC_DEBUG_MODE_ADC_COCO_MASK, /*!< This signal is generated by ADC when a conversion is completed. */ kTSC_ADCConversionValueFlag = TSC_DEBUG_MODE_ADC_CONV_VALUE_MASK, /*!< This signal is generated by ADC and indicates the result of an ADC conversion. */ }; /*! * @ TSC status flag mask. */ enum _tsc_status_flag_mask { kTSC_IntermediateStateFlag = TSC_DEBUG_MODE2_INTERMEDIATE_MASK, /*!< This flag is set if TSC is in intermediate state, between two state machine states. */ kTSC_DetectFiveWireFlag = TSC_DEBUG_MODE2_DETECT_FIVE_WIRE_MASK, /*!< This flag is set if TSC receives a 5-wire detect signal. It is only valid when the TSC in detect state and DETECT_ENABLE_FIVE_WIRE bit is set. */ kTSC_DetectFourWireFlag = TSC_DEBUG_MODE2_DETECT_FOUR_WIRE_MASK, /*!< This flag is set if TSC receives a 4-wire detect signal. It is only valid when the TSC in detect state and DETECT_ENABLE_FOUR_WIRE bit is set. */ kTSC_GlitchThresholdFlag = TSC_DEBUG_MODE2_DE_GLITCH_MASK, /*!< This field indicates glitch threshold.The threshold is defined by number of clock cycles. See "tsc_glitch_threshold_t". If value = 00, Normal function: 0x1fff ipg clock cycles, Low power mode: 0x9 low power clock cycles. If value = 01, Normal function: 0xfff ipg clock cycles, Low power mode: :0x7 low power clock cycles. If value = 10, Normal function: 0x7ff ipg clock cycles, Low power mode:0x5 low power clock cycles. If value = 11, Normal function: 0x3 ipg clock cycles, Low power mode:0x3 low power clock cycles. */ kTSC_StateMachineFlag = TSC_DEBUG_MODE2_STATE_MACHINE_MASK, /*!< This field indicates the state of TSC. See "tsc_state_machine_t"; if value = 000, Controller is in idle state. if value = 001, Controller is in 1st-Pre-charge state. if value = 010, Controller is in 1st-detect state. if value = 011, Controller is in x-measure state. if value = 100, Controller is in y-measure state. if value = 101, Controller is in 2nd-Pre-charge state. if value = 110, Controller is in 2nd-detect state. */ }; /*! * @brief TSC state machine. These seven states are TSC complete workflow. */ typedef enum _tsc_state_machine { kTSC_IdleState = 0U << TSC_DEBUG_MODE2_STATE_MACHINE_SHIFT, /*!< Controller is in idle state. */ kTSC_1stPreChargeState = 1U << TSC_DEBUG_MODE2_STATE_MACHINE_SHIFT, /*!< Controller is in 1st-Pre-charge state. */ kTSC_1stDetectState = 2U << TSC_DEBUG_MODE2_STATE_MACHINE_SHIFT, /*!< Controller is in 1st-detect state. */ kTSC_XMeasureState = 3U << TSC_DEBUG_MODE2_STATE_MACHINE_SHIFT, /*!< Controller is in x-measure state. */ kTSC_YMeasureState = 4U << TSC_DEBUG_MODE2_STATE_MACHINE_SHIFT, /*!< Controller is in y-measure state. */ kTSC_2ndPreChargeState = 5U << TSC_DEBUG_MODE2_STATE_MACHINE_SHIFT, /*!< Controller is in 2nd-Pre-charge state. */ kTSC_2ndDetectState = 6U << TSC_DEBUG_MODE2_STATE_MACHINE_SHIFT, /*!< Controller is in 2nd-detect state. */ } tsc_state_machine_t; /*! * @brief TSC glitch threshold. */ typedef enum _tsc_glitch_threshold { kTSC_glitchThresholdALT0 = 0U << TSC_DEBUG_MODE2_DE_GLITCH_SHIFT, /*!< Normal function: 0x1fff ipg clock cycles, Low power mode: 0x9 low power clock cycles. */ kTSC_glitchThresholdALT1 = 1U << TSC_DEBUG_MODE2_DE_GLITCH_SHIFT, /*!< Normal function: 0xfff ipg clock cycles, Low power mode: :0x7 low power clock cycles. */ kTSC_glitchThresholdALT2 = 2U << TSC_DEBUG_MODE2_DE_GLITCH_SHIFT, /*!< Normal function: 0x7ff ipg clock cycles, Low power mode: :0x5 low power clock cycles. */ kTSC_glitchThresholdALT3 = 3U << TSC_DEBUG_MODE2_DE_GLITCH_SHIFT, /*!< Normal function: 0x3 ipg clock cycles, Low power mode: :0x3 low power clock cycles. */ } tsc_glitch_threshold_t; /*! * @ Hardware trigger select signal, select which ADC channel to start conversion. */ typedef enum _tsc_trigger_signal { kTSC_TriggerToChannel0 = 1U << 0U, /*!< Trigger to ADC channel0. ADC_HC0 register will be used to conversion. */ kTSC_TriggerToChannel1 = 1U << 1U, /*!< Trigger to ADC channel1. ADC_HC1 register will be used to conversion. */ kTSC_TriggerToChannel2 = 1U << 2U, /*!< Trigger to ADC channel2. ADC_HC2 register will be used to conversion. */ kTSC_TriggerToChannel3 = 1U << 3U, /*!< Trigger to ADC channel3. ADC_HC3 register will be used to conversion. */ kTSC_TriggerToChannel4 = 1U << 4U, /*!< Trigger to ADC channel4. ADC_HC4 register will be used to conversion. */ } tsc_trigger_signal_t; /*! * @ TSC controller ports. */ typedef enum _tsc_port_source { kTSC_WiperPortSource = 0U, /*!< TSC controller wiper port. */ kTSC_YnlrPortSource = 1U, /*!< TSC controller ynlr port. */ kTSC_YpllPortSource = 2U, /*!< TSC controller ypll port. */ kTSC_XnurPortSource = 3U, /*!< TSC controller xnur port. */ kTSC_XpulPortSource = 4U, /*!< TSC controller xpul port. */ } tsc_port_source_t; /*! * @ TSC port mode. */ typedef enum _tsc_port_mode { kTSC_PortOffMode = 0U, /*!< Disable pull up/down mode. */ kTSC_Port200k_PullUpMode = 1U << 2U, /*!< 200k-pull up mode. */ kTSC_PortPullUpMode = 1U << 1U, /*!< Pull up mode. */ kTSC_PortPullDownMode = 1U << 0U, /*!< Pull down mode. */ } tsc_port_mode_t; /*! * @ Controller configuration. */ typedef struct _tsc_config { bool enableAutoMeasure; /*!< Enable the auto-measure. It indicates after detect touch, whether automatic start measurement */ uint32_t measureDelayTime; /*!< Set delay time(0U~0xFFFFFFU) to even potential distribution ready.It is a preparation for measure stage. If measure dalay time is too short, maybe it would have an undesired effect on measure value. */ uint32_t prechargeTime; /*!< Set pre-charge time(1U~0xFFFFFFFFU) to make the upper layer of screen to charge to positive high. It is a preparation for detection stage. Pre-charge time must is greater than 0U, otherwise TSC could not work normally. If pre-charge dalay time is too short, maybe it would have an undesired effect on generation of valid signal(kTSC_ValidSignalFlag).*/ tsc_detection_mode_t detectionMode; /*!< Select the detection mode. See "tsc_detection_mode_t". */ } tsc_config_t; /******************************************************************************* * API ******************************************************************************/ #if defined(__cplusplus) extern "C" { #endif /*! * @brief Initialize the TSC module. * * @param base TSC peripheral base address. * @param config Pointer to "tsc_config_t" structure. */ void TSC_Init(TSC_Type *base, const tsc_config_t *config); /*! * @brief De-initializes the TSC module. * * @param base TSC peripheral base address. */ void TSC_Deinit(TSC_Type *base); /*! * @brief Gets an available pre-defined settings for the controller's configuration. * * This function initializes the converter configuration structure with available settings. * The default values of measureDelayTime and prechargeTime is tested on LCD8000-43T screen and work normally. * The default values are: * @code * config->enableAutoMeausre = false; * config->measureDelayTime = 0xFFFFU; * config->prechargeTime = 0xFFFFU; * config->detectionMode = kTSC_4WireDetectionMode; * @endCode * @param config Pointer to "tsc_config_t" structure. */ void TSC_GetDefaultConfig(tsc_config_t *config); /*! * @brief Make the TSC module return to idle status after finish the current state operation. * Application could check TSC status to confirm that the controller has return to idle status. * * @param base TSC peripheral base address. */ static inline void TSC_ReturnToIdleStatus(TSC_Type *base) { /* TSC_FLOW_CONTROL_DISABLE_MASK is a HW self-clean bit. */ base->FLOW_CONTROL |= TSC_FLOW_CONTROL_DISABLE_MASK; } /*! * @brief Start sense detection and (if work in auto-measure mode) measure after detect a touch. * * @param base TSC peripheral base address. */ static inline void TSC_StartSenseDetection(TSC_Type *base) { /* TSC_FLOW_CONTROL_START_SENSE_MASK is a HW self-clean bit. */ base->FLOW_CONTROL |= TSC_FLOW_CONTROL_START_SENSE_MASK; } /*! * @brief start measure X/Y coordinate value after detect a touch. * * @param base TSC peripheral base address. */ static inline void TSC_StartMeasure(TSC_Type *base) { /* TSC_FLOW_CONTROL_START_MEASURE_MASK is a HW self-clean bit. */ base->FLOW_CONTROL |= TSC_FLOW_CONTROL_START_MEASURE_MASK; } /*! * @brief Drop measure X/Y coordinate value after detect a touch and controller return to idle status. * * @param base TSC peripheral base address. */ static inline void TSC_DropMeasure(TSC_Type *base) { /* TSC_FLOW_CONTROL_DROP_MEASURE_MASK is a HW self-clean bit. */ base->FLOW_CONTROL |= TSC_FLOW_CONTROL_DROP_MEASURE_MASK; } /*! * @brief This is a synchronization reset, which resets every register except IPS directly access ones. * * @param base TSC peripheral base address. */ static inline void TSC_SoftwareReset(TSC_Type *base) { /* TSC_FLOW_CONTROL_SW_RST_MASK is a HW self-clean bit. */ base->FLOW_CONTROL |= TSC_FLOW_CONTROL_SW_RST_MASK; } /*! * @brief Get Y coordinate value or X coordinate value. The value is an ADC conversion value. * * @param base TSC peripheral base address. * @param selection Select alternative measure value which is Y coordinate value or X coordinate value. * See "tsc_corrdinate_value_selection_t". * @return If selection is "kTSC_XCoordinateValueSelection", the API returns x-coordinate vlaue. * If selection is "kTSC_YCoordinateValueSelection", the API returns y-coordinate vlaue. */ uint32_t TSC_GetMeasureValue(TSC_Type *base, tsc_corrdinate_value_selection_t selection); /*! * @brief Enable the interrupt signals. Interrupt signal will be set when corresponding event happens. * Specific events point to "_tsc_interrupt_signal_mask" . * Specific interrupt signal point to "_tsc_interrupt_status_flag_mask"; * * @param base TSC peripheral base address. * @param mask Interrupt signals mask. See "_tsc_interrupt_signal_mask". */ static inline void TSC_EnableInterruptSignals(TSC_Type *base, uint32_t mask) { base->INT_SIG_EN |= mask; } /*! * @brief Disable the interrupt signals. Interrupt signal will be set when corresponding event happens. * Specific events point to "_tsc_interrupt_signal_mask". * Specific interrupt signal point to "_tsc_interrupt_status_flag_mask"; * * @param base TSC peripheral base address. * @param mask Interrupt signals mask. See "_tsc_interrupt_signal_mask". */ static inline void TSC_DisableInterruptSignals(TSC_Type *base, uint32_t mask) { base->INT_SIG_EN &= ~mask; } /*! * @brief Enable the interrupts. Notice: Only interrupts and signals are all enabled, interrupts * could work normally. * * @param base TSC peripheral base address. * @param mask Interrupts mask. See "_tsc_interrupt_mask". */ static inline void TSC_EnableInterrupts(TSC_Type *base, uint32_t mask) { base->INT_EN |= mask; } /*! * @brief Disable the interrupts. * * @param base TSC peripheral base address. * @param mask Interrupts mask. See "_tsc_interrupt_mask". */ static inline void TSC_DisableInterrupts(TSC_Type *base, uint32_t mask) { base->INT_EN &= ~mask; } /*! * @brief Get interrupt status flags. Interrupt status falgs are valid when corresponding * interrupt signals are enabled. * * @param base TSC peripheral base address. * @return Status flags asserted mask. See "_tsc_interrupt_status_flag_mask". */ static inline uint32_t TSC_GetInterruptStatusFlags(TSC_Type *base) { return base->INT_STATUS; } /*! * @brief Clear interrupt status flags. Interrupt status falgs are valid when corresponding * interrupt signals are enabled. * * @param base TSC peripheral base address. * @param mask Status flags mask. See "_tsc_interrupt_status_flag_mask". */ static inline void TSC_ClearInterruptStatusFlags(TSC_Type *base, uint32_t mask) { base->INT_STATUS = mask; } /*! * @brief Get the status flags of ADC working with TSC. * * @param base TSC peripheral base address. * @return Status flags asserted mask. See "_tsc_adc_status_flag_mask". */ static inline uint32_t TSC_GetADCStatusFlags(TSC_Type *base) { return base->DEBUG_MODE; } /*! * @brief Get the status flags of TSC. * * @param base TSC peripheral base address. * @return Status flags asserted mask. See "_tsc_status_flag_mask". */ static inline uint32_t TSC_GetStatusFlags(TSC_Type *base) { return base->DEBUG_MODE2; } /*! *@} */ /******************************************************************************* * Debug API ******************************************************************************/ /*! * @brief Enable/Disable debug mode. Once work in debug mode, then all * TSC outputs will be controlled by software. Software can also observe all TSC inputs * through debug interface. Furthermore, the debug registers also provides current state * machine states. Software can always check the current hardware state. * * @param base TSC peripheral base address. * @param enable Switcher of the debug mode. "true" means debug mode,"false" means non-debug mode. */ static inline void TSC_EnableDebugMode(TSC_Type *base, bool enable) { if (enable) { base->DEBUG_MODE |= TSC_DEBUG_MODE_DEBUG_EN_MASK; } else { base->DEBUG_MODE &= ~TSC_DEBUG_MODE_DEBUG_EN_MASK; } } /*! * @brief Send hardware trigger signal to ADC in debug mode. The trigger signal must last at least 1 ips clock period. * * @param base TSC peripheral base address. * @param hwts Hardware trigger select signal, select which channel to start conversion. See "tsc_trigger_signal_t". * On ADC side, HWTS = 1 << x indicates the x logic channel is selected to start hardware ADC conversion. * @param enable Switcher of the trigger signal. "true" means generate trigger signal, "false" means don't generate * trigger signal. */ void TSC_DebugTriggerSignalToADC(TSC_Type *base, tsc_trigger_signal_t hwts, bool enable); /*! * @brief Enable/Disable hardware generates an ADC COCO clear signal in debug mode. * * @param base TSC peripheral base address. * @param enable Switcher of the function of hardware generating an ADC COCO clear signal. * "true" means prevent TSC from generate ADC COCO clear signal. * "false" means allow TSC hardware generates ADC COCO clear. */ static inline void TSC_DebugDisableHWClear(TSC_Type *base, bool enable) { if (enable) { base->DEBUG_MODE |= TSC_DEBUG_MODE_ADC_COCO_CLEAR_DISABLE_MASK; } else { base->DEBUG_MODE &= ~TSC_DEBUG_MODE_ADC_COCO_CLEAR_DISABLE_MASK; } } /*! * @brief Send clear ADC COCO signal to ADC in debug mode. The signal must hold a while. * * @param base TSC peripheral base address. * @param enable Switcher of the clear signal."true" means generate clear signal, "false" means don't generate * clear signal. */ static inline void TSC_DebugClearSignalToADC(TSC_Type *base, bool enable) { if (enable) { base->DEBUG_MODE |= TSC_DEBUG_MODE_ADC_COCO_CLEAR_MASK; } else { base->DEBUG_MODE &= ~TSC_DEBUG_MODE_ADC_COCO_CLEAR_MASK; } } /*! * @brief Enable/Disable detection in debug mode. * * @param base TSC peripheral base address. * @param detectionMode Set detect mode. See "tsc_detection_mode_t" * @param enable Switcher of detect enable. "true" means enable detection, "false" means disable detection. */ void TSC_DebugEnableDetection(TSC_Type *base, tsc_detection_mode_t detectionMode, bool enable); /*! * @brief Set TSC port mode in debug mode.(pull down, pull up and 200k-pull up) * * @param base TSC peripheral base address. * @param port TSC controller ports. * @param mode TSC port mode.(pull down, pull up and 200k-pull up) */ void TSC_DebugSetPortMode(TSC_Type *base, tsc_port_source_t port, tsc_port_mode_t mode); #endif /* _FSL_TSC_H_ */