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/*
* Copyright (c) 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 <assert.h>
#include "fsl_vref_driver.h"
#include "fsl_vref_hal.h"
#include "fsl_clock_manager.h"
#if FSL_FEATURE_SOC_VREF_COUNT
/*FUNCTION*********************************************************************
*
* Function Name : VREF_DRV_Init
* Description : Initialize the comparator in VREF module.
*
*END*************************************************************************/
vref_status_t VREF_DRV_Init(uint32_t instance, const vref_user_config_t *userConfigPtr)
{
assert(instance < VREF_INSTANCE_COUNT);
VREF_Type * base = (VREF_Type *)g_vrefBase[instance];
if (!userConfigPtr)
{
return kStatus_VREF_InvalidArgument;
}
/* Enable clock for VREF. */
CLOCK_SYS_EnableVrefClock(instance);
/* Reset all the register to default state. */
VREF_HAL_Init(base);
/* Configure VREF to a known state*/
VREF_HAL_Configure(base, userConfigPtr);
VREF_HAL_WaitVoltageStable(base);
return kStatus_VREF_Success;
}
/*FUNCTION*********************************************************************
*
* Function Name : VREF_DRV_Deinit
* Description : De-initialize the comparator in VREF module. It will gate
* the clock to VREF module. When VREF is no long used in application, calling
* this API will shut down the device to reduce power consumption.
*
*END*************************************************************************/
vref_status_t VREF_DRV_Deinit(uint32_t instance)
{
assert(instance < VREF_INSTANCE_COUNT);
VREF_Type * base = (VREF_Type *)g_vrefBase[instance];
VREF_HAL_Disable(base);
/* Disable clock for ADC. */
CLOCK_SYS_DisableVrefClock(instance);
return kStatus_VREF_Success;
}
/*FUNCTION*********************************************************************
*
* Function Name : VREF_DRV_SetTrimValue
* Description : Set TRIM bits value
*
*END*************************************************************************/
vref_status_t VREF_DRV_SetTrimValue(uint32_t instance, uint8_t trimValue)
{
assert(instance < VREF_INSTANCE_COUNT);
VREF_Type * base = (VREF_Type *)g_vrefBase[instance];
VREF_HAL_SetTrimVal(base, trimValue);
VREF_HAL_WaitVoltageStable(base);
return kStatus_VREF_Success;
}
#if FSL_FEATURE_VREF_HAS_LOW_REFERENCE
/*FUNCTION*********************************************************************
*
* Function Name : VREF_DRV_SetTrimValue
* Description : Set TRIM bits value
*
*END*************************************************************************/
vref_status_t VREF_DRV_SetLowReferenceTrimVal(uint32_t instance, uint8_t trimValue)
{
assert(instance < VREF_INSTANCE_COUNT);
VREF_Type * base = (VREF_Type *)g_vrefBase[instance];
VREF_HAL_SetLowReferenceTrimVal(base, trimValue);
VREF_HAL_WaitVoltageStable(base);
return kStatus_VREF_Success;
}
#endif
#endif
/******************************************************************************
* EOF
*****************************************************************************/
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