stm32f4:rng: basic functions with documentation.
Reviewed-by: Karl Palsson <karlp@tweak.net.au> Removed higher level helpers from this commit, they are not a very friendly API to use.
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@ -1,3 +1,5 @@
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/** @addtogroup rng_file
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*/
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/*
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* This file is part of the libopencm3 project.
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*
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@ -26,6 +28,8 @@ specific memorymap.h header before including this header file.*/
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#ifndef LIBOPENCM3_RNG_COMMON_F24_H
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#define LIBOPENCM3_RNG_COMMON_F24_H
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/**@{*/
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/* --- Random number generator registers ----------------------------------- */
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/* Control register */
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@ -62,6 +66,17 @@ specific memorymap.h header before including this header file.*/
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/* Seed error interrupt status */
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#define RNG_SR_SEIS (1 << 6)
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/* --- Function prototypes ------------------------------------------------- */
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BEGIN_DECLS
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void rng_enable(void);
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void rng_disable(void);
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END_DECLS
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/**@}*/
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#endif
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/** @cond */
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#else
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@ -0,0 +1,27 @@
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/* This provides unification of code over STM32 subfamilies */
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/*
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* This file is part of the libopencm3 project.
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*
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* This library is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser 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 library 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 Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <libopencm3/cm3/common.h>
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#include <libopencm3/stm32/memorymap.h>
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#if defined(STM32F4)
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# include <libopencm3/stm32/f4/rng.h>
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#else
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# error "stm32 family not defined."
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#endif
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@ -39,7 +39,7 @@ TGT_CFLAGS += $(DEBUG_FLAGS)
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ARFLAGS = rcs
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OBJS = adc.o adc_common_v1.o can.o desig.o gpio.o pwr.o rcc.o \
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rtc.o crypto.o
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rtc.o crypto.o rng.o
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OBJS += crc_common_all.o dac_common_all.o dma_common_f24.o \
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gpio_common_all.o gpio_common_f0234.o i2c_common_all.o \
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@ -0,0 +1,52 @@
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/** @defgroup rng_file RNG
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*
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* @ingroup STM32F4xx
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*
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* @brief <b>libopencm3 STM32F4xx RNG</b>
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*
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* @version 1.0.0
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*
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* @date 25 March 2015
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*
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* This library supports the random number generator peripheral (RNG) in the
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* STM32F4 series of ARM Cortex Microcontrollers by ST Microelectronics.
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*
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*LGPL License Terms @ref lgpl_license
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*/
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/*
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* This file is part of the libopencm3 project.
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*
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* This library is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser 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 library 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 Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <libopencm3/stm32/rng.h>
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/**@{*/
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/** Disable the Random Number Generator peripheral.
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*/
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void rng_disable(void)
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{
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RNG_CR &= ~RNG_CR_RNGEN;
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}
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/** Enable the Random Number Generator peripheral.
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*/
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void rng_enable(void)
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{
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RNG_CR |= RNG_CR_RNGEN;
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}
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/**@}*/
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