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/*
* Copyright (c) 2013 - 2014, Freescale Semiconductor, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted 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 Freescale Semiconductor, Inc. nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* 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.
*/
#include "fsl_flexio_driver.h"
#include "fsl_flexio_hal.h"
#include "fsl_clock_manager.h"
#include "fsl_interrupt_manager.h"
#if FSL_FEATURE_SOC_FLEXIO_COUNT
/*******************************************************************************
* Variables
******************************************************************************/
flexio_shifter_callback_t shifterIntCallback[FLEXIO_INSTANCE_COUNT][4];
/*FUNCTION*********************************************************************
*
* Function Name : FLEXIO_DRV_Init
* Description : Initialize the flexio module before using flexio module.
*
*END*************************************************************************/
flexio_status_t FLEXIO_DRV_Init(uint32_t instance, const flexio_user_config_t *userConfigPtr)
{
FLEXIO_Type* base = g_flexioBase[instance];
if (!userConfigPtr)
{
return kStatus_FLEXIO_InvalidArgument;
}
/* Enable the clock gate for FlexIO. */
CLOCK_SYS_EnableFlexioClock(instance);
/* Reset the FlexIO hardware. */
FLEXIO_HAL_Init(g_flexioBase[instance]);
/* Disable the FlexIO mode during configure. */
FLEXIO_DRV_Pause(instance);
/* Configure the FlexIO's work mode. */
FLEXIO_HAL_SetDozeModeCmd(base, userConfigPtr->onDozeEnable);
FLEXIO_HAL_SetDebugModeCmd(base, userConfigPtr->onDebugEnable);
FLEXIO_HAL_SetFastAccessCmd(base, userConfigPtr->fastAccessEnable);
/* Switch on/off the interrupt in NVIC. */
if (userConfigPtr->useInt)
{
/* Enable the NVIC for FlexIO. */
INT_SYS_EnableIRQ(g_flexioIrqId[instance]);
}
else
{
/* Disable the NVIC for FlexIO. */
INT_SYS_DisableIRQ(g_flexioIrqId[instance]);
}
return kStatus_FLEXIO_Success;
}
/*FUNCTION*********************************************************************
*
* Function Name : FLEXIO_DRV_Start
* Description : Enable the flexio's working after configuring the flexio devices.
*
*END*************************************************************************/
void FLEXIO_DRV_Start(uint32_t instance)
{
FLEXIO_Type* base = g_flexioBase[instance];
FLEXIO_HAL_SetFlexioEnableCmd(base, true);
}
/*FUNCTION*********************************************************************
*
* Function Name : FLEXIO_DRV_Pause
* Description : Disable the flexio's work during configuring the flexio devices.
*
*END*************************************************************************/
void FLEXIO_DRV_Pause(uint32_t instance)
{
FLEXIO_Type* base = g_flexioBase[instance];
FLEXIO_HAL_SetFlexioEnableCmd(base, false);
}
/*FUNCTION*********************************************************************
*
* Function Name : FLEXIO_DRV_RegisterCallback
* Description : Register the callback function into shifter interrupt.
*
*END*************************************************************************/
void FLEXIO_DRV_RegisterCallback(uint32_t instance, uint32_t shifterId,
flexio_shifter_int_handler_t shifterIntHandler,
void *param)
{
shifterIntCallback[instance][shifterId].shifterIntHandler = shifterIntHandler;
shifterIntCallback[instance][shifterId].param = param;
}
/*FUNCTION*********************************************************************
*
* Function Name : FLEXIO_DRV_Deinit
* Description : Deinitialize the flexio module.
*
*END*************************************************************************/
flexio_status_t FLEXIO_DRV_Deinit(uint32_t instance)
{
/* Switch off the interrupt in NVIC. */
INT_SYS_DisableIRQ(g_flexioIrqId[instance]);
/* Disable the clock gate for FlexIO. */
CLOCK_SYS_DisableFlexioClock(instance);
return kStatus_FLEXIO_Success;
}
/*FUNCTION**********************************************************************
*
* Function Name : FLEXIO_DRV_IRQHandler
* Description : Interrupt handler for FLEXIO.
* This handler polls the shifter status and call the corresponding handler to
* handle the shifter status.
*
*END**************************************************************************/
void FLEXIO_DRV_IRQHandler(uint32_t instance)
{
uint32_t shifterMask,shifterNum,shifterStatus,shifterErr,tmp,shifterInt;
shifterNum = FLEXIO_HAL_GetShifterNumber(g_flexioBase[instance]);
shifterStatus = FLEXIO_HAL_GetShifterStatusFlags(g_flexioBase[instance]);
shifterErr = FLEXIO_HAL_GetShifterErrorFlags(g_flexioBase[instance]);
shifterInt = FLEXIO_HAL_GetShifterStatusIntCmd(g_flexioBase[instance]);
if(shifterStatus)
{
for(shifterMask = 0; shifterMask < shifterNum; shifterMask++)
{
tmp = 1<<shifterMask;
if(shifterStatus&tmp)
{
if(shifterInt&tmp)
{
shifterIntCallback[instance][shifterMask].shifterIntHandler(shifterIntCallback[instance][shifterMask].param);
break;
}
}
}
}
if(shifterErr)
{
for(shifterMask = 0; shifterMask < shifterNum; shifterMask++)
{
tmp = 1<<shifterMask;
if(shifterErr&tmp)
{
FLEXIO_HAL_ClearShifterErrorFlags(g_flexioBase[instance],1<<shifterMask);
}
}
}
}
#endif
/******************************************************************************
* EOF
*****************************************************************************/
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