File content as of revision 324:406fd2029f23:

/*
 * 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.
 */
#if !defined(__FSL_OSC_HAL_H__)
#define __FSL_OSC_HAL_H__

#include <stdint.h>
#include <stdbool.h>
#include <assert.h>
#include "fsl_device_registers.h"
#include "fsl_osc_features.h"

/*! @addtogroup osc_hal*/
/*! @{*/

/*! @file fsl_osc_hal.h */

/*******************************************************************************
 * Definitions
 ******************************************************************************/

/*! @brief Oscillator capacitor load configurations.*/
typedef enum _osc_capacitor_config {
    kOscCapacitor2p = OSC_CR_SC2P_MASK,     /*!< 2 pF capacitor load */
    kOscCapacitor4p = OSC_CR_SC4P_MASK,     /*!< 4 pF capacitor load */
    kOscCapacitor8p = OSC_CR_SC8P_MASK,     /*!< 8 pF capacitor load */
    kOscCapacitor16p = OSC_CR_SC16P_MASK    /*!< 16 pF capacitor load */
} osc_capacitor_config_t;

/*******************************************************************************
 * API
 ******************************************************************************/

#if defined(__cplusplus)
extern "C" {
#endif /* __cplusplus*/

/*! @name oscillator control APIs*/
/*@{*/


/*!
 * @brief Enables the external reference clock for the oscillator.
 *
 * This function  enables the external reference clock output 
 * for the oscillator, OSCERCLK. This clock is used
 * by many peripherals. It should be enabled at an early system initialization
 * stage to ensure the peripherals can select and use it.
 *
 * @param baseAddr Oscillator register base address
 * @param enable   enable/disable the clock
 */
void OSC_HAL_SetExternalRefClkCmd(uint32_t baseAddr, bool enable);

/*!
 * @brief Gets the external reference clock enable setting for the oscillator.
 *
 * This function gets the external reference clock output enable setting
 * for the oscillator , OSCERCLK. This clock  is used
 * by many peripherals. It should be enabled at an early system initialization
 * stage to ensure the peripherals could select and use it.
 * 
 * @param baseAddr Oscillator register base address
 * @return enable  clock enable/disable setting
 */
bool OSC_HAL_GetExternalRefClkCmd(uint32_t baseAddr);

/*!
 * @brief Enables/disables the external reference clock in stop mode.
 *
 * This function  enables/disables the external reference clock (OSCERCLK) when an
 * MCU enters the stop mode. 
 *
 * @param baseAddr Oscillator register base address
 * @param enable   enable/disable setting
 */
void OSC_HAL_SetExternalRefClkInStopModeCmd(uint32_t baseAddr, bool enable);

/*!
 * @brief Gets the external reference clock enable setting in stop mode.
 *
 * This function gets the external reference clock (OSCERCLK) enable setting when an
 * MCU enters stop mode. 
 *
 * @param baseAddr Oscillator register base address
 */
bool OSC_HAL_GetExternalRefClkInStopModeCmd(uint32_t baseAddr);

/*!
 * @brief Enables the capacitor configuration for the oscillator.
 *
 * This function  enables the specified capacitors configuration for the 
 * oscillator. This should be done in the early system level initialization function call
 * based on the system configuration.
 *
 * @param baseAddr Oscillator register base address
 * @param capacitorConfig Capacitor configuration. (2p, 4p, 8p, 16p)
 * @param enable          enable/disable the Capacitor configuration 
 */
void OSC_HAL_SetCapacitorCmd(uint32_t baseAddr, 
                             osc_capacitor_config_t capacitorConfig,
                             bool enable);

/*!
 * @brief Gets the capacitor configuration for a specific oscillator.
 *
 * This function gets the specified capacitors configuration for an 
 * oscillator.
 *
 * @param baseAddr Oscillator register base address
 * @param capacitorConfig Capacitor configuration. 
 * @return enable         enable/disable setting
 */
bool OSC_HAL_GetCapacitorCmd(uint32_t baseAddr, 
                             osc_capacitor_config_t capacitorConfig);

#if FSL_FEATURE_OSC_HAS_EXT_REF_CLOCK_DIVIDER
/*!
 * @brief Sets the external reference clock divider.
 *
 * This function sets the divider for the external reference clock.
 *
 * @param baseAddr Oscillator register base address
 * @param divider   divider settings
 */
void OSC_HAL_SetExternalRefClkDivCmd(uint32_t baseAddr, uint32_t divider);

/*!
 * @brief Gets the external reference clock divider.
 *
 * This function gets the divider for the external reference clock.
 *
 * @param baseAddr Oscillator register base address
 * @return divider   divider settings
 */
uint32_t OSC_HAL_GetExternalRefClkDivCmd(uint32_t baseAddr);
#endif

/*@}*/

#if defined(__cplusplus)
}
#endif /* __cplusplus*/

/*! @}*/

#endif /* __FSL_OSC_HAL_H__*/
/*******************************************************************************
 * EOF
 ******************************************************************************/