42 lines
1.8 KiB
C
42 lines
1.8 KiB
C
/***************************************************************************
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* Copyright (C) 2023 - 2025 by Federico Amedeo Izzo IU2NUO, *
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* Niccolò Izzo IU2KIN *
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* Frederik Saraci IU2NRO *
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* Silvano Seva IU2KWO *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 3 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, see <http://www.gnu.org/licenses/> *
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***************************************************************************/
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#include <peripherals/rng.h>
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#include <MK22F51212.h>
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void rng_init()
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{
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SIM->SCGC6 |= SIM_SCGC6_RNGA(1);
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RNG->CR |= RNG_CR_GO(1);
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}
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void rng_terminate()
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{
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SIM->SCGC6 &= ~SIM_SCGC6_RNGA(1);
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}
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uint32_t rng_get()
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{
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// Wait until there is some data
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while((RNG->SR & RNG_SR_OREG_LVL_MASK) == 0) ;
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return RNG->OR;
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}
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