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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 "fsl_rnga_hal.h"
#if FSL_FEATURE_SOC_RNG_COUNT
/*!
* @brief Get random data.
*
* This function is used to get a random data from RNGA
*
*/
rnga_status_t RNGA_HAL_GetRandomData(RNG_Type * base, uint32_t *data)
{
volatile rnga_output_reg_level_t oregLevel;
uint16_t count = 0;
oregLevel = kRNGAOutputRegLevelNowords;
while (oregLevel == kRNGAOutputRegLevelNowords)
{
oregLevel = RNGA_HAL_GetOutputRegLevel(base);
count++;
if (count == MAX_COUNT)
{
return kStatus_RNGA_Timeout;
}
}
*data = RNGA_HAL_ReadRandomData(base);
return kStatus_RNGA_Success;
}
#endif
/*******************************************************************************
* EOF
*******************************************************************************/
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