File content as of revision 14:2044ad5cd3fe:

/** 
 * |----------------------------------------------------------------------
 * | Copyright (C) Tilen Majerle, 2014
 * | 
 * | This program is free software: you can redistribute it and/or modify
 * | it under the terms of the GNU General Public License as published by
 * | the Free Software Foundation, either version 3 of the License, or
 * | any later version.
 * |  
 * | This program is distributed in the hope that it will be useful,
 * | but WITHOUT ANY WARRANTY; without even the implied warranty of
 * | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * | GNU General Public License for more details.
 * | 
 * | You should have received a copy of the GNU General Public License
 * | along with this program.  If not, see <http://www.gnu.org/licenses/>.
 * |----------------------------------------------------------------------
 */
#include "tm_stm32_rng.h"

void TM_RNG_Init(void) {
    /* Enable RNG clock source */
    __HAL_RCC_RNG_CLK_ENABLE();
    
    /* RNG Peripheral enable */
    RNG->CR |= RNG_CR_RNGEN;
}

void TM_RNG_DeInit(void) {
    /* Disable RNG peripheral */
    RNG->CR &= ~RNG_CR_RNGEN;
    
    /* Disable RNG clock source */
    __HAL_RCC_RNG_CLK_DISABLE();
}

uint32_t TM_RNG_Get(void) {
    /* Wait until one RNG number is ready */
    while (!(RNG->SR & (RNG_SR_DRDY)));

    /* Get a 32-bit Random number */
    return RNG->DR;
}