549 lines
23 KiB
C
549 lines
23 KiB
C
/*
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* The Clear BSD License
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* Copyright (c) 2016, Freescale Semiconductor, Inc.
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* Copyright 2016-2017 NXP
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted (subject to the limitations in the disclaimer below) provided
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* that the following conditions are met:
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*
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* o Redistributions of source code must retain the above copyright notice, this list
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* of conditions and the following disclaimer.
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*
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* o Redistributions in binary form must reproduce the above copyright notice, this
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* list of conditions and the following disclaimer in the documentation and/or
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* other materials provided with the distribution.
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*
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* o Neither the name of the copyright holder nor the names of its
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* contributors may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED BY THIS LICENSE.
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _FSL_TSC_H_
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#define _FSL_TSC_H_
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#include "fsl_common.h"
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/*!
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* @addtogroup tsc
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* @{
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*/
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/*******************************************************************************
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* Definitions
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******************************************************************************/
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/*! @brief TSC driver version */
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#define FSL_TSC_DRIVER_VERSION (MAKE_VERSION(2, 0, 0)) /*!< Version 2.0.0. */
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/*!
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* @ Controller detection mode.
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*/
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typedef enum _tsc_detection_mode
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{
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kTSC_Detection4WireMode = 0U, /*!< 4-Wire Detection Mode. */
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kTSC_Detection5WireMode = 1U, /*!< 5-Wire Detection Mode. */
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} tsc_detection_mode_t;
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/*!
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* @ Coordinate value mask.
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*/
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typedef enum _tsc_corrdinate_value_selection
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{
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kTSC_XCoordinateValueSelection = 0U, /*!< X coordinate value is selected. */
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kTSC_YCoordinateValueSelection = 1U, /*!< Y coordinate value is selected. */
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} tsc_corrdinate_value_selection_t;
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/*!
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* @ Interrupt signal enable/disable mask.
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*/
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enum _tsc_interrupt_signal_mask
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{
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kTSC_IdleSoftwareSignalEnable = TSC_INT_SIG_EN_IDLE_SW_SIG_EN_MASK, /*!< Enable the interrupt signal when the
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controller has return to idle status.
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The signal is only valid after using
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TSC_ReturnToIdleStatus API. */
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kTSC_ValidSignalEnable =
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TSC_INT_SIG_EN_VALID_SIG_EN_MASK, /*!< Enable the interrupt signal when controller receives a detect signal
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after measurement. */
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kTSC_DetectSignalEnable =
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TSC_INT_SIG_EN_DETECT_SIG_EN_MASK, /*!< Enable the interrupt signal when controller receives a detect signal. */
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kTSC_MeasureSignalEnable = TSC_INT_SIG_EN_MEASURE_SIG_EN_MASK, /*!< Enable the interrupt signal after the touch
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detection which follows measurement. */
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};
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/*!
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* @ Interrupt enable/disable mask.
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*/
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enum _tsc_interrupt_mask
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{
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kTSC_IdleSoftwareInterruptEnable =
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TSC_INT_EN_IDLE_SW_INT_EN_MASK, /*!< Enable the interrupt when the controller has return to idle status.
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The interrupt is only valid after using TSC_ReturnToIdleStatus API. */
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kTSC_DetectInterruptEnable =
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TSC_INT_EN_DETECT_INT_EN_MASK, /*!< Enable the interrupt when controller receive a detect signal. */
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kTSC_MeasureInterruptEnable = TSC_INT_EN_MEASURE_INT_EN_MASK, /*!< Enable the interrupt after the touch detection
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which follows measurement. */
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};
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/*!
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* @ Interrupt Status flag mask.
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*/
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enum _tsc_interrupt_status_flag_mask
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{
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kTSC_IdleSoftwareFlag =
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TSC_INT_STATUS_IDLE_SW_MASK, /*!< This flag is set if the controller has return to idle status.
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The flag is only valid after using TSC_ReturnToIdleStatus API. */
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kTSC_ValidSignalFlag =
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TSC_INT_STATUS_VALID_MASK, /*!< This flag is set if controller receives a detect signal after measurement. */
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kTSC_DetectSignalFlag = TSC_INT_STATUS_DETECT_MASK, /*!< This flag is set if controller receives a detect signal. */
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kTSC_MeasureSignalFlag =
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TSC_INT_STATUS_MEASURE_MASK, /*!< This flag is set after the touch detection which follows measurement.
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Note: Valid signal falg will be cleared along with measure signal flag. */
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};
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/*!
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* @ ADC status flag mask.
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*/
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enum _tsc_adc_status_flag_mask
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{
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kTSC_ADCCOCOSignalFlag =
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TSC_DEBUG_MODE_ADC_COCO_MASK, /*!< This signal is generated by ADC when a conversion is completed. */
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kTSC_ADCConversionValueFlag =
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TSC_DEBUG_MODE_ADC_CONV_VALUE_MASK, /*!< This signal is generated by ADC and indicates the result of an ADC
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conversion. */
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};
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/*!
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* @ TSC status flag mask.
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*/
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enum _tsc_status_flag_mask
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{
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kTSC_IntermediateStateFlag = TSC_DEBUG_MODE2_INTERMEDIATE_MASK, /*!< This flag is set if TSC is in intermediate
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state, between two state machine states. */
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kTSC_DetectFiveWireFlag = TSC_DEBUG_MODE2_DETECT_FIVE_WIRE_MASK, /*!< This flag is set if TSC receives a 5-wire
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detect signal. It is only valid when the TSC in
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detect state and DETECT_ENABLE_FIVE_WIRE bit is
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set. */
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kTSC_DetectFourWireFlag = TSC_DEBUG_MODE2_DETECT_FOUR_WIRE_MASK, /*!< This flag is set if TSC receives a 4-wire
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detect signal. It is only valid when the TSC in
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detect state and DETECT_ENABLE_FOUR_WIRE bit is
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set. */
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kTSC_GlitchThresholdFlag = TSC_DEBUG_MODE2_DE_GLITCH_MASK, /*!< This field indicates glitch threshold.The threshold
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is defined by number of clock cycles. See
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"tsc_glitch_threshold_t".
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If value = 00, Normal function: 0x1fff ipg clock
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cycles, Low power mode: 0x9 low power clock cycles.
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If value = 01, Normal function: 0xfff ipg clock
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cycles, Low power mode: :0x7 low power clock cycles.
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If value = 10, Normal function: 0x7ff ipg clock
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cycles, Low power mode:0x5 low power clock cycles.
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If value = 11, Normal function: 0x3 ipg clock
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cycles, Low power mode:0x3 low power clock cycles. */
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kTSC_StateMachineFlag =
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TSC_DEBUG_MODE2_STATE_MACHINE_MASK, /*!< This field indicates the state of TSC. See "tsc_state_machine_t";
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if value = 000, Controller is in idle state.
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if value = 001, Controller is in 1st-Pre-charge state.
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if value = 010, Controller is in 1st-detect state.
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if value = 011, Controller is in x-measure state.
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if value = 100, Controller is in y-measure state.
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if value = 101, Controller is in 2nd-Pre-charge state.
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if value = 110, Controller is in 2nd-detect state. */
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};
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/*!
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* @brief TSC state machine. These seven states are TSC complete workflow.
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*/
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typedef enum _tsc_state_machine
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{
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kTSC_IdleState = 0U << TSC_DEBUG_MODE2_STATE_MACHINE_SHIFT, /*!< Controller is in idle state. */
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kTSC_1stPreChargeState = 1U << TSC_DEBUG_MODE2_STATE_MACHINE_SHIFT, /*!< Controller is in 1st-Pre-charge state. */
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kTSC_1stDetectState = 2U << TSC_DEBUG_MODE2_STATE_MACHINE_SHIFT, /*!< Controller is in 1st-detect state. */
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kTSC_XMeasureState = 3U << TSC_DEBUG_MODE2_STATE_MACHINE_SHIFT, /*!< Controller is in x-measure state. */
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kTSC_YMeasureState = 4U << TSC_DEBUG_MODE2_STATE_MACHINE_SHIFT, /*!< Controller is in y-measure state. */
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kTSC_2ndPreChargeState = 5U << TSC_DEBUG_MODE2_STATE_MACHINE_SHIFT, /*!< Controller is in 2nd-Pre-charge state. */
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kTSC_2ndDetectState = 6U << TSC_DEBUG_MODE2_STATE_MACHINE_SHIFT, /*!< Controller is in 2nd-detect state. */
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} tsc_state_machine_t;
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/*!
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* @brief TSC glitch threshold.
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*/
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typedef enum _tsc_glitch_threshold
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{
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kTSC_glitchThresholdALT0 =
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0U << TSC_DEBUG_MODE2_DE_GLITCH_SHIFT, /*!< Normal function: 0x1fff ipg clock cycles, Low power mode: 0x9 low
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power clock cycles. */
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kTSC_glitchThresholdALT1 =
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1U << TSC_DEBUG_MODE2_DE_GLITCH_SHIFT, /*!< Normal function: 0xfff ipg clock cycles, Low power mode: :0x7 low
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power clock cycles. */
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kTSC_glitchThresholdALT2 =
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2U << TSC_DEBUG_MODE2_DE_GLITCH_SHIFT, /*!< Normal function: 0x7ff ipg clock cycles, Low power mode: :0x5 low
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power clock cycles. */
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kTSC_glitchThresholdALT3 =
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3U << TSC_DEBUG_MODE2_DE_GLITCH_SHIFT, /*!< Normal function: 0x3 ipg clock cycles, Low
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power mode: :0x3 low power clock cycles. */
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} tsc_glitch_threshold_t;
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/*!
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* @ Hardware trigger select signal, select which ADC channel to start conversion.
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*/
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typedef enum _tsc_trigger_signal
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{
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kTSC_TriggerToChannel0 = 1U << 0U, /*!< Trigger to ADC channel0. ADC_HC0 register will be used to conversion. */
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kTSC_TriggerToChannel1 = 1U << 1U, /*!< Trigger to ADC channel1. ADC_HC1 register will be used to conversion. */
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kTSC_TriggerToChannel2 = 1U << 2U, /*!< Trigger to ADC channel2. ADC_HC2 register will be used to conversion. */
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kTSC_TriggerToChannel3 = 1U << 3U, /*!< Trigger to ADC channel3. ADC_HC3 register will be used to conversion. */
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kTSC_TriggerToChannel4 = 1U << 4U, /*!< Trigger to ADC channel4. ADC_HC4 register will be used to conversion. */
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} tsc_trigger_signal_t;
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/*!
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* @ TSC controller ports.
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*/
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typedef enum _tsc_port_source
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{
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kTSC_WiperPortSource = 0U, /*!< TSC controller wiper port. */
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kTSC_YnlrPortSource = 1U, /*!< TSC controller ynlr port. */
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kTSC_YpllPortSource = 2U, /*!< TSC controller ypll port. */
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kTSC_XnurPortSource = 3U, /*!< TSC controller xnur port. */
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kTSC_XpulPortSource = 4U, /*!< TSC controller xpul port. */
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} tsc_port_source_t;
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/*!
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* @ TSC port mode.
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*/
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typedef enum _tsc_port_mode
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{
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kTSC_PortOffMode = 0U, /*!< Disable pull up/down mode. */
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kTSC_Port200k_PullUpMode = 1U << 2U, /*!< 200k-pull up mode. */
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kTSC_PortPullUpMode = 1U << 1U, /*!< Pull up mode. */
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kTSC_PortPullDownMode = 1U << 0U, /*!< Pull down mode. */
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} tsc_port_mode_t;
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/*!
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* @ Controller configuration.
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*/
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typedef struct _tsc_config
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{
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bool enableAutoMeasure; /*!< Enable the auto-measure. It indicates after detect touch, whether automatic start
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measurement */
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uint32_t measureDelayTime; /*!< Set delay time(0U~0xFFFFFFU) to even potential distribution ready.It is a
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preparation for measure stage. If measure dalay time is too short, maybe it would
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have an undesired effect on measure value. */
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uint32_t prechargeTime; /*!< Set pre-charge time(1U~0xFFFFFFFFU) to make the upper layer of
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screen to charge to positive high. It is a preparation for detection stage.
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Pre-charge time must is greater than 0U, otherwise TSC could not work normally.
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If pre-charge dalay time is too short, maybe it would have an undesired effect on
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generation of valid signal(kTSC_ValidSignalFlag).*/
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tsc_detection_mode_t detectionMode; /*!< Select the detection mode. See "tsc_detection_mode_t". */
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} tsc_config_t;
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/*******************************************************************************
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* API
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******************************************************************************/
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#if defined(__cplusplus)
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extern "C" {
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#endif
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/*!
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* @brief Initialize the TSC module.
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*
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* @param base TSC peripheral base address.
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* @param config Pointer to "tsc_config_t" structure.
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*/
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void TSC_Init(TSC_Type *base, const tsc_config_t *config);
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/*!
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* @brief De-initializes the TSC module.
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*
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* @param base TSC peripheral base address.
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*/
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void TSC_Deinit(TSC_Type *base);
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/*!
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* @brief Gets an available pre-defined settings for the controller's configuration.
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*
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* This function initializes the converter configuration structure with available settings.
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* The default values of measureDelayTime and prechargeTime is tested on LCD8000-43T screen and work normally.
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* The default values are:
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* @code
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* config->enableAutoMeausre = false;
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* config->measureDelayTime = 0xFFFFU;
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* config->prechargeTime = 0xFFFFU;
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* config->detectionMode = kTSC_4WireDetectionMode;
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* @endCode
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* @param config Pointer to "tsc_config_t" structure.
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*/
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void TSC_GetDefaultConfig(tsc_config_t *config);
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/*!
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* @brief Make the TSC module return to idle status after finish the current state operation.
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* Application could check TSC status to confirm that the controller has return to idle status.
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*
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* @param base TSC peripheral base address.
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*/
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static inline void TSC_ReturnToIdleStatus(TSC_Type *base)
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{
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/* TSC_FLOW_CONTROL_DISABLE_MASK is a HW self-clean bit. */
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base->FLOW_CONTROL |= TSC_FLOW_CONTROL_DISABLE_MASK;
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}
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/*!
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* @brief Start sense detection and (if work in auto-measure mode) measure after detect a touch.
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*
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* @param base TSC peripheral base address.
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*/
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static inline void TSC_StartSenseDetection(TSC_Type *base)
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{
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/* TSC_FLOW_CONTROL_START_SENSE_MASK is a HW self-clean bit. */
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base->FLOW_CONTROL |= TSC_FLOW_CONTROL_START_SENSE_MASK;
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}
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/*!
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* @brief start measure X/Y coordinate value after detect a touch.
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*
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* @param base TSC peripheral base address.
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*/
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static inline void TSC_StartMeasure(TSC_Type *base)
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{
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/* TSC_FLOW_CONTROL_START_MEASURE_MASK is a HW self-clean bit. */
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base->FLOW_CONTROL |= TSC_FLOW_CONTROL_START_MEASURE_MASK;
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}
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/*!
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* @brief Drop measure X/Y coordinate value after detect a touch and controller return to idle status.
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*
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* @param base TSC peripheral base address.
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*/
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static inline void TSC_DropMeasure(TSC_Type *base)
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{
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/* TSC_FLOW_CONTROL_DROP_MEASURE_MASK is a HW self-clean bit. */
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base->FLOW_CONTROL |= TSC_FLOW_CONTROL_DROP_MEASURE_MASK;
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}
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/*!
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* @brief This is a synchronization reset, which resets every register except IPS directly access ones.
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*
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* @param base TSC peripheral base address.
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*/
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static inline void TSC_SoftwareReset(TSC_Type *base)
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{
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/* TSC_FLOW_CONTROL_SW_RST_MASK is a HW self-clean bit. */
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base->FLOW_CONTROL |= TSC_FLOW_CONTROL_SW_RST_MASK;
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}
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/*!
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* @brief Get Y coordinate value or X coordinate value. The value is an ADC conversion value.
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*
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* @param base TSC peripheral base address.
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* @param selection Select alternative measure value which is Y coordinate value or X coordinate value.
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* See "tsc_corrdinate_value_selection_t".
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* @return If selection is "kTSC_XCoordinateValueSelection", the API returns x-coordinate vlaue.
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* If selection is "kTSC_YCoordinateValueSelection", the API returns y-coordinate vlaue.
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*/
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uint32_t TSC_GetMeasureValue(TSC_Type *base, tsc_corrdinate_value_selection_t selection);
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/*!
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* @brief Enable the interrupt signals. Interrupt signal will be set when corresponding event happens.
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* Specific events point to "_tsc_interrupt_signal_mask" .
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* Specific interrupt signal point to "_tsc_interrupt_status_flag_mask";
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*
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* @param base TSC peripheral base address.
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* @param mask Interrupt signals mask. See "_tsc_interrupt_signal_mask".
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*/
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static inline void TSC_EnableInterruptSignals(TSC_Type *base, uint32_t mask)
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{
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base->INT_SIG_EN |= mask;
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}
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/*!
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* @brief Disable the interrupt signals. Interrupt signal will be set when corresponding event happens.
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* Specific events point to "_tsc_interrupt_signal_mask".
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* Specific interrupt signal point to "_tsc_interrupt_status_flag_mask";
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*
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* @param base TSC peripheral base address.
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* @param mask Interrupt signals mask. See "_tsc_interrupt_signal_mask".
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*/
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static inline void TSC_DisableInterruptSignals(TSC_Type *base, uint32_t mask)
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{
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base->INT_SIG_EN &= ~mask;
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}
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/*!
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* @brief Enable the interrupts. Notice: Only interrupts and signals are all enabled, interrupts
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* could work normally.
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*
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* @param base TSC peripheral base address.
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* @param mask Interrupts mask. See "_tsc_interrupt_mask".
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*/
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static inline void TSC_EnableInterrupts(TSC_Type *base, uint32_t mask)
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{
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base->INT_EN |= mask;
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}
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/*!
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* @brief Disable the interrupts.
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*
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* @param base TSC peripheral base address.
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* @param mask Interrupts mask. See "_tsc_interrupt_mask".
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*/
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static inline void TSC_DisableInterrupts(TSC_Type *base, uint32_t mask)
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{
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base->INT_EN &= ~mask;
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}
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/*!
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* @brief Get interrupt status flags. Interrupt status falgs are valid when corresponding
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* interrupt signals are enabled.
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*
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* @param base TSC peripheral base address.
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* @return Status flags asserted mask. See "_tsc_interrupt_status_flag_mask".
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*/
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static inline uint32_t TSC_GetInterruptStatusFlags(TSC_Type *base)
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{
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return base->INT_STATUS;
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}
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/*!
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* @brief Clear interrupt status flags. Interrupt status falgs are valid when corresponding
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* interrupt signals are enabled.
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*
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* @param base TSC peripheral base address.
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* @param mask Status flags mask. See "_tsc_interrupt_status_flag_mask".
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*/
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static inline void TSC_ClearInterruptStatusFlags(TSC_Type *base, uint32_t mask)
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{
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base->INT_STATUS = mask;
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}
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/*!
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* @brief Get the status flags of ADC working with TSC.
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*
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* @param base TSC peripheral base address.
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* @return Status flags asserted mask. See "_tsc_adc_status_flag_mask".
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*/
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static inline uint32_t TSC_GetADCStatusFlags(TSC_Type *base)
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{
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return base->DEBUG_MODE;
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}
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/*!
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* @brief Get the status flags of TSC.
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*
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* @param base TSC peripheral base address.
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* @return Status flags asserted mask. See "_tsc_status_flag_mask".
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*/
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static inline uint32_t TSC_GetStatusFlags(TSC_Type *base)
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{
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return base->DEBUG_MODE2;
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}
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/*!
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*@}
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*/
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|
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/*******************************************************************************
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* Debug API
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******************************************************************************/
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|
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/*!
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* @brief Enable/Disable debug mode. Once work in debug mode, then all
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* TSC outputs will be controlled by software. Software can also observe all TSC inputs
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* through debug interface. Furthermore, the debug registers also provides current state
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* machine states. Software can always check the current hardware state.
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*
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* @param base TSC peripheral base address.
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* @param enable Switcher of the debug mode. "true" means debug mode,"false" means non-debug mode.
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|
*/
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static inline void TSC_EnableDebugMode(TSC_Type *base, bool enable)
|
|
{
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|
if (enable)
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|
{
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base->DEBUG_MODE |= TSC_DEBUG_MODE_DEBUG_EN_MASK;
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}
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else
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|
{
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base->DEBUG_MODE &= ~TSC_DEBUG_MODE_DEBUG_EN_MASK;
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|
}
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|
}
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|
|
|
/*!
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* @brief Send hardware trigger signal to ADC in debug mode. The trigger signal must last at least 1 ips clock period.
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|
*
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* @param base TSC peripheral base address.
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* @param hwts Hardware trigger select signal, select which channel to start conversion. See "tsc_trigger_signal_t".
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* On ADC side, HWTS = 1 << x indicates the x logic channel is selected to start hardware ADC conversion.
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* @param enable Switcher of the trigger signal. "true" means generate trigger signal, "false" means don't generate
|
|
* trigger signal.
|
|
*/
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|
void TSC_DebugTriggerSignalToADC(TSC_Type *base, tsc_trigger_signal_t hwts, bool enable);
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|
|
|
/*!
|
|
* @brief Enable/Disable hardware generates an ADC COCO clear signal in debug mode.
|
|
*
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|
* @param base TSC peripheral base address.
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|
* @param enable Switcher of the function of hardware generating an ADC COCO clear signal.
|
|
* "true" means prevent TSC from generate ADC COCO clear signal.
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|
* "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_ */
|