| /* ---------------------------------------------------------------------------- | |
| * SAM Software Package License | |
| * ---------------------------------------------------------------------------- | |
| * Copyright (c) 2011, Atmel Corporation | |
| * | |
| * All rights reserved. | |
| * | |
| * Redistribution and use in source and binary forms, with or without | |
| * modification, are permitted provided that the following conditions are met: | |
| * | |
| * - Redistributions of source code must retain the above copyright notice, | |
| * this list of conditions and the disclaimer below. | |
| * | |
| * Atmel's name may not be used to endorse or promote products derived from | |
| * this software without specific prior written permission. | |
| * | |
| * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR | |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE | |
| * DISCLAIMED. IN NO EVENT SHALL ATMEL 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. | |
| * ---------------------------------------------------------------------------- | |
| */ | |
| /** \file */ | |
| /*------------------------------------------------------------------------------ | |
| * Header | |
| *------------------------------------------------------------------------------*/ | |
| #include "board.h" | |
| /*------------------------------------------------------------------------------ | |
| * Global Variables | |
| *------------------------------------------------------------------------------*/ | |
| static uint32_t _dwRandNext=1 ; | |
| /*------------------------------------------------------------------------------ | |
| * Exported Functions | |
| *------------------------------------------------------------------------------*/ | |
| /** | |
| * Initialize the seed for rand generator. | |
| * | |
| * \param seed rand initiation seed | |
| */ | |
| extern void srand( uint32_t dwSeed ) | |
| { | |
| _dwRandNext = dwSeed ; | |
| } | |
| /** | |
| * Return a random number, maxinum assumed to be 65536 | |
| */ | |
| extern uint32_t rand( void ) | |
| { | |
| _dwRandNext = _dwRandNext * 1103515245 + 12345 ; | |
| return (uint32_t)(_dwRandNext/131072) % 65536 ; | |
| } | |