204 lines
6.8 KiB
C
204 lines
6.8 KiB
C
|
/*
|
||
|
|
* The Clear BSD License
|
||
|
|
* Copyright 2017 NXP
|
||
|
|
* All rights reserved.
|
||
|
|
*
|
||
|
|
* Redistribution and use in source and binary forms, with or without modification,
|
||
|
|
* are permitted (subject to the limitations in the disclaimer below) provided
|
||
|
|
* that the following conditions are met:
|
||
|
|
*
|
||
|
|
* o Redistributions of source code must retain the above copyright notice, this list
|
||
|
|
* of conditions and the following disclaimer.
|
||
|
|
*
|
||
|
|
* o Redistributions in binary form must reproduce the above copyright notice, this
|
||
|
|
* list of conditions and the following disclaimer in the documentation and/or
|
||
|
|
* other materials provided with the distribution.
|
||
|
|
*
|
||
|
|
* o Neither the name of the copyright holder nor the names of its
|
||
|
|
* contributors may be used to endorse or promote products derived from this
|
||
|
|
* software without specific prior written permission.
|
||
|
|
*
|
||
|
|
* NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED BY THIS LICENSE.
|
||
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
|
||
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
||
|
|
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
||
|
|
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
|
||
|
|
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
||
|
|
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
||
|
|
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
|
||
|
|
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
||
|
|
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||
|
|
*/
|
||
|
|
#ifndef _FSL_KPP_H_
|
||
|
|
#define _FSL_KPP_H_
|
||
|
|
|
||
|
|
#include "fsl_common.h"
|
||
|
|
|
||
|
|
/*!
|
||
|
|
* @addtogroup kpp
|
||
|
|
* @{
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*******************************************************************************
|
||
|
|
* Definitions
|
||
|
|
******************************************************************************/
|
||
|
|
|
||
|
|
/*! @name Driver version */
|
||
|
|
/*@{*/
|
||
|
|
/*! @brief KPP driver version 2.0.0. */
|
||
|
|
#define FSL_KPP_DRIVER_VERSION (MAKE_VERSION(2, 0, 0))
|
||
|
|
/*@}*/
|
||
|
|
|
||
|
|
#define KPP_KEYPAD_COLUMNNUM_MAX (8U)
|
||
|
|
#define KPP_KEYPAD_ROWNUM_MAX (8U)
|
||
|
|
|
||
|
|
/*! @brief List of interrupts supported by the peripheral. This
|
||
|
|
* enumeration uses one-bot encoding to allow a logical OR of multiple
|
||
|
|
* members. Members usually map to interrupt enable bits in one or more
|
||
|
|
* peripheral registers.
|
||
|
|
*/
|
||
|
|
typedef enum _kpp_interrupt_enable {
|
||
|
|
kKPP_keyDepressInterrupt = KPP_KPSR_KDIE_MASK, /*!< Keypad depress interrupt source */
|
||
|
|
kKPP_keyReleaseInterrupt = KPP_KPSR_KRIE_MASK /*!< Keypad release interrupt source */
|
||
|
|
} kpp_interrupt_enable_t;
|
||
|
|
|
||
|
|
/*! @brief Lists of KPP synchronize chain operation. */
|
||
|
|
typedef enum _kpp_sync_operation {
|
||
|
|
kKPP_ClearKeyDepressSyncChain = KPP_KPSR_KDSC_MASK, /*!< Keypad depress interrupt status. */
|
||
|
|
kKPP_SetKeyReleasesSyncChain = KPP_KPSR_KRSS_MASK, /*!< Keypad release interrupt status. */
|
||
|
|
} kpp_sync_operation_t;
|
||
|
|
|
||
|
|
/*! @brief Lists of KPP status. */
|
||
|
|
typedef struct _kpp_config
|
||
|
|
{
|
||
|
|
uint8_t activeRow; /*!< The row number: bit 7 ~ 0 represents the row 7 ~ 0. */
|
||
|
|
uint8_t activeColumn; /*!< The column number: bit 7 ~ 0 represents the column 7 ~ 0. */
|
||
|
|
uint16_t interrupt; /*!< KPP interrupt source. A logical OR of "kpp_interrupt_enable_t". */
|
||
|
|
} kpp_config_t;
|
||
|
|
|
||
|
|
/*******************************************************************************
|
||
|
|
* API
|
||
|
|
******************************************************************************/
|
||
|
|
|
||
|
|
#if defined(__cplusplus)
|
||
|
|
extern "C" {
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/*!
|
||
|
|
* @name Initialization and De-initialization
|
||
|
|
* @{
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*!
|
||
|
|
* @brief KPP initialize.
|
||
|
|
* This function ungates the KPP clock and initializes KPP.
|
||
|
|
* This function must be called before calling any other KPP driver functions.
|
||
|
|
*
|
||
|
|
* @param base KPP peripheral base address.
|
||
|
|
* @param configure The KPP configuration structure pointer.
|
||
|
|
*/
|
||
|
|
void KPP_Init(KPP_Type *base, kpp_config_t *configure);
|
||
|
|
|
||
|
|
/*!
|
||
|
|
* @brief Deinitializes the KPP module and gates the clock.
|
||
|
|
* This function gates the KPP clock. As a result, the KPP
|
||
|
|
* module doesn't work after calling this function.
|
||
|
|
*
|
||
|
|
* @param base KPP peripheral base address.
|
||
|
|
*/
|
||
|
|
void KPP_Deinit(KPP_Type *base);
|
||
|
|
|
||
|
|
/* @} */
|
||
|
|
|
||
|
|
/*!
|
||
|
|
* @name KPP Basic Operation
|
||
|
|
* @{
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*!
|
||
|
|
* @brief Enable the interrupt.
|
||
|
|
*
|
||
|
|
* @param base KPP peripheral base address.
|
||
|
|
* @param mask KPP interrupts to enable. This is a logical OR of the
|
||
|
|
* enumeration :: kpp_interrupt_enable_t.
|
||
|
|
*/
|
||
|
|
static inline void KPP_EnableInterrupts(KPP_Type *base, uint16_t mask)
|
||
|
|
{
|
||
|
|
uint16_t data = base->KPSR & ~(KPP_KPSR_KPKR_MASK | KPP_KPSR_KPKD_MASK);
|
||
|
|
base->KPSR = data | mask;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*!
|
||
|
|
* @brief Disable the interrupt.
|
||
|
|
*
|
||
|
|
* @param base KPP peripheral base address.
|
||
|
|
* @param mask KPP interrupts to disable. This is a logical OR of the
|
||
|
|
* enumeration :: kpp_interrupt_enable_t.
|
||
|
|
*/
|
||
|
|
static inline void KPP_DisableInterrupts(KPP_Type *base, uint16_t mask)
|
||
|
|
{
|
||
|
|
base->KPSR &= ~(mask | KPP_KPSR_KPKR_MASK | KPP_KPSR_KPKD_MASK);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*!
|
||
|
|
* @brief Gets the KPP interrupt event status.
|
||
|
|
*
|
||
|
|
* @param base KPP peripheral base address.
|
||
|
|
* @return The status of the KPP. Application can use the enum type in the "kpp_interrupt_enable_t"
|
||
|
|
* to get the right status of the related event.
|
||
|
|
*/
|
||
|
|
static inline uint16_t KPP_GetStatusFlag(KPP_Type *base)
|
||
|
|
{
|
||
|
|
return (base->KPSR & (KPP_KPSR_KPKR_MASK | KPP_KPSR_KPKD_MASK)) << KPP_KPSR_KDIE_SHIFT;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*!
|
||
|
|
* @brief Clears KPP status flag.
|
||
|
|
*
|
||
|
|
* @param base KPP peripheral base address.
|
||
|
|
* @param mask KPP mask to be cleared. This is a logical OR of the
|
||
|
|
* enumeration :: kpp_interrupt_enable_t.
|
||
|
|
*/
|
||
|
|
static inline void KPP_ClearStatusFlag(KPP_Type *base, uint16_t mask)
|
||
|
|
{
|
||
|
|
base->KPSR |= (uint16_t)((mask) >> KPP_KPSR_KDIE_SHIFT);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*!
|
||
|
|
* @brief Set KPP synchronization chain.
|
||
|
|
*
|
||
|
|
* @param base KPP peripheral base address.
|
||
|
|
* @param mask KPP mask to be cleared. This is a logical OR of the
|
||
|
|
* enumeration :: kpp_sync_operation_t.
|
||
|
|
*/
|
||
|
|
static inline void KPP_SetSynchronizeChain(KPP_Type *base, uint16_t mask)
|
||
|
|
{
|
||
|
|
uint16_t data = base->KPSR & (KPP_KPSR_KRSS_MASK | KPP_KPSR_KDSC_MASK | KPP_KPSR_KRIE_MASK | KPP_KPSR_KDIE_MASK);
|
||
|
|
base->KPSR = data | mask;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*!
|
||
|
|
* @brief Keypad press scanning.
|
||
|
|
*
|
||
|
|
* This function will scanning all columns and rows. so
|
||
|
|
* all scanning data will be stored in the data pointer.
|
||
|
|
*
|
||
|
|
* @param base KPP peripheral base address.
|
||
|
|
* @param data KPP key press scanning data. The data buffer should be prepared with
|
||
|
|
* length at least equal to KPP_KEYPAD_COLUMNNUM_MAX * KPP_KEYPAD_ROWNUM_MAX.
|
||
|
|
* the data pointer is recommended to be a array like uint8_t data[KPP_KEYPAD_COLUMNNUM_MAX].
|
||
|
|
* for example the data[2] = 4, that means in column 1 row 2 has a key press event.
|
||
|
|
*/
|
||
|
|
void KPP_keyPressScanning(KPP_Type *base, uint8_t *data, uint32_t clockSrc_Hz);
|
||
|
|
|
||
|
|
/* @} */
|
||
|
|
|
||
|
|
#if defined(__cplusplus)
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/*! @}*/
|
||
|
|
|
||
|
|
#endif /* _FSL_KPP_H_*/
|