1 | /**
|
---|
2 | ******************************************************************************
|
---|
3 | * @file stm32f4xx_hal_rng.c
|
---|
4 | * @author MCD Application Team
|
---|
5 | * @version V1.4.1
|
---|
6 | * @date 09-October-2015
|
---|
7 | * @brief RNG HAL module driver.
|
---|
8 | * This file provides firmware functions to manage the following
|
---|
9 | * functionalities of the Random Number Generator (RNG) peripheral:
|
---|
10 | * + Initialization/de-initialization functions
|
---|
11 | * + Peripheral Control functions
|
---|
12 | * + Peripheral State functions
|
---|
13 | *
|
---|
14 | @verbatim
|
---|
15 | ==============================================================================
|
---|
16 | ##### How to use this driver #####
|
---|
17 | ==============================================================================
|
---|
18 | [..]
|
---|
19 | The RNG HAL driver can be used as follows:
|
---|
20 |
|
---|
21 | (#) Enable the RNG controller clock using __HAL_RCC_RNG_CLK_ENABLE() macro
|
---|
22 | in HAL_RNG_MspInit().
|
---|
23 | (#) Activate the RNG peripheral using HAL_RNG_Init() function.
|
---|
24 | (#) Wait until the 32 bit Random Number Generator contains a valid
|
---|
25 | random data using (polling/interrupt) mode.
|
---|
26 | (#) Get the 32 bit random number using HAL_RNG_GenerateRandomNumber() function.
|
---|
27 |
|
---|
28 | @endverbatim
|
---|
29 | ******************************************************************************
|
---|
30 | * @attention
|
---|
31 | *
|
---|
32 | * <h2><center>© COPYRIGHT(c) 2015 STMicroelectronics</center></h2>
|
---|
33 | *
|
---|
34 | * Redistribution and use in source and binary forms, with or without modification,
|
---|
35 | * are permitted provided that the following conditions are met:
|
---|
36 | * 1. Redistributions of source code must retain the above copyright notice,
|
---|
37 | * this list of conditions and the following disclaimer.
|
---|
38 | * 2. Redistributions in binary form must reproduce the above copyright notice,
|
---|
39 | * this list of conditions and the following disclaimer in the documentation
|
---|
40 | * and/or other materials provided with the distribution.
|
---|
41 | * 3. Neither the name of STMicroelectronics nor the names of its contributors
|
---|
42 | * may be used to endorse or promote products derived from this software
|
---|
43 | * without specific prior written permission.
|
---|
44 | *
|
---|
45 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
---|
46 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
---|
47 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
---|
48 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
|
---|
49 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
---|
50 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
---|
51 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
---|
52 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
---|
53 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
---|
54 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
---|
55 | *
|
---|
56 | ******************************************************************************
|
---|
57 | */
|
---|
58 |
|
---|
59 | /* Includes ------------------------------------------------------------------*/
|
---|
60 | #include "stm32f4xx_hal.h"
|
---|
61 |
|
---|
62 | /** @addtogroup STM32F4xx_HAL_Driver
|
---|
63 | * @{
|
---|
64 | */
|
---|
65 |
|
---|
66 | /** @addtogroup RNG
|
---|
67 | * @{
|
---|
68 | */
|
---|
69 |
|
---|
70 | #ifdef HAL_RNG_MODULE_ENABLED
|
---|
71 |
|
---|
72 | #if defined(STM32F405xx) || defined(STM32F415xx) || defined(STM32F407xx) || defined(STM32F417xx) ||\
|
---|
73 | defined(STM32F427xx) || defined(STM32F437xx) || defined(STM32F429xx) || defined(STM32F439xx) ||\
|
---|
74 | defined(STM32F410Tx) || defined(STM32F410Cx) || defined(STM32F410Rx) || defined(STM32F469xx) ||\
|
---|
75 | defined(STM32F479xx)
|
---|
76 |
|
---|
77 |
|
---|
78 | /* Private types -------------------------------------------------------------*/
|
---|
79 | /* Private defines -----------------------------------------------------------*/
|
---|
80 | /* Private variables ---------------------------------------------------------*/
|
---|
81 | /* Private constants ---------------------------------------------------------*/
|
---|
82 | /** @addtogroup RNG_Private_Constants
|
---|
83 | * @{
|
---|
84 | */
|
---|
85 | #define RNG_TIMEOUT_VALUE 2
|
---|
86 | /**
|
---|
87 | * @}
|
---|
88 | */
|
---|
89 | /* Private macros ------------------------------------------------------------*/
|
---|
90 | /* Private functions prototypes ----------------------------------------------*/
|
---|
91 | /* Private functions ---------------------------------------------------------*/
|
---|
92 | /* Exported functions --------------------------------------------------------*/
|
---|
93 |
|
---|
94 | /** @addtogroup RNG_Exported_Functions
|
---|
95 | * @{
|
---|
96 | */
|
---|
97 |
|
---|
98 | /** @addtogroup RNG_Exported_Functions_Group1
|
---|
99 | * @brief Initialization and de-initialization functions
|
---|
100 | *
|
---|
101 | @verbatim
|
---|
102 | ===============================================================================
|
---|
103 | ##### Initialization and de-initialization functions #####
|
---|
104 | ===============================================================================
|
---|
105 | [..] This section provides functions allowing to:
|
---|
106 | (+) Initialize the RNG according to the specified parameters
|
---|
107 | in the RNG_InitTypeDef and create the associated handle
|
---|
108 | (+) DeInitialize the RNG peripheral
|
---|
109 | (+) Initialize the RNG MSP
|
---|
110 | (+) DeInitialize RNG MSP
|
---|
111 |
|
---|
112 | @endverbatim
|
---|
113 | * @{
|
---|
114 | */
|
---|
115 |
|
---|
116 | /**
|
---|
117 | * @brief Initializes the RNG peripheral and creates the associated handle.
|
---|
118 | * @param hrng: pointer to a RNG_HandleTypeDef structure that contains
|
---|
119 | * the configuration information for RNG.
|
---|
120 | * @retval HAL status
|
---|
121 | */
|
---|
122 | HAL_StatusTypeDef HAL_RNG_Init(RNG_HandleTypeDef *hrng)
|
---|
123 | {
|
---|
124 | /* Check the RNG handle allocation */
|
---|
125 | if(hrng == NULL)
|
---|
126 | {
|
---|
127 | return HAL_ERROR;
|
---|
128 | }
|
---|
129 |
|
---|
130 | __HAL_LOCK(hrng);
|
---|
131 |
|
---|
132 | if(hrng->State == HAL_RNG_STATE_RESET)
|
---|
133 | {
|
---|
134 | /* Allocate lock resource and initialize it */
|
---|
135 | hrng->Lock = HAL_UNLOCKED;
|
---|
136 | /* Init the low level hardware */
|
---|
137 | HAL_RNG_MspInit(hrng);
|
---|
138 | }
|
---|
139 |
|
---|
140 | /* Change RNG peripheral state */
|
---|
141 | hrng->State = HAL_RNG_STATE_BUSY;
|
---|
142 |
|
---|
143 | /* Enable the RNG Peripheral */
|
---|
144 | __HAL_RNG_ENABLE(hrng);
|
---|
145 |
|
---|
146 | /* Initialize the RNG state */
|
---|
147 | hrng->State = HAL_RNG_STATE_READY;
|
---|
148 |
|
---|
149 | __HAL_UNLOCK(hrng);
|
---|
150 |
|
---|
151 | /* Return function status */
|
---|
152 | return HAL_OK;
|
---|
153 | }
|
---|
154 |
|
---|
155 | /**
|
---|
156 | * @brief DeInitializes the RNG peripheral.
|
---|
157 | * @param hrng: pointer to a RNG_HandleTypeDef structure that contains
|
---|
158 | * the configuration information for RNG.
|
---|
159 | * @retval HAL status
|
---|
160 | */
|
---|
161 | HAL_StatusTypeDef HAL_RNG_DeInit(RNG_HandleTypeDef *hrng)
|
---|
162 | {
|
---|
163 | /* Check the RNG handle allocation */
|
---|
164 | if(hrng == NULL)
|
---|
165 | {
|
---|
166 | return HAL_ERROR;
|
---|
167 | }
|
---|
168 | /* Disable the RNG Peripheral */
|
---|
169 | CLEAR_BIT(hrng->Instance->CR, RNG_CR_IE | RNG_CR_RNGEN);
|
---|
170 |
|
---|
171 | /* Clear RNG interrupt status flags */
|
---|
172 | CLEAR_BIT(hrng->Instance->SR, RNG_SR_CEIS | RNG_SR_SEIS);
|
---|
173 |
|
---|
174 | /* DeInit the low level hardware */
|
---|
175 | HAL_RNG_MspDeInit(hrng);
|
---|
176 |
|
---|
177 | /* Update the RNG state */
|
---|
178 | hrng->State = HAL_RNG_STATE_RESET;
|
---|
179 |
|
---|
180 | /* Release Lock */
|
---|
181 | __HAL_UNLOCK(hrng);
|
---|
182 |
|
---|
183 | /* Return the function status */
|
---|
184 | return HAL_OK;
|
---|
185 | }
|
---|
186 |
|
---|
187 | /**
|
---|
188 | * @brief Initializes the RNG MSP.
|
---|
189 | * @param hrng: pointer to a RNG_HandleTypeDef structure that contains
|
---|
190 | * the configuration information for RNG.
|
---|
191 | * @retval None
|
---|
192 | */
|
---|
193 | __weak void HAL_RNG_MspInit(RNG_HandleTypeDef *hrng)
|
---|
194 | {
|
---|
195 | /* NOTE : This function should not be modified. When the callback is needed,
|
---|
196 | function HAL_RNG_MspInit must be implemented in the user file.
|
---|
197 | */
|
---|
198 | }
|
---|
199 |
|
---|
200 | /**
|
---|
201 | * @brief DeInitializes the RNG MSP.
|
---|
202 | * @param hrng: pointer to a RNG_HandleTypeDef structure that contains
|
---|
203 | * the configuration information for RNG.
|
---|
204 | * @retval None
|
---|
205 | */
|
---|
206 | __weak void HAL_RNG_MspDeInit(RNG_HandleTypeDef *hrng)
|
---|
207 | {
|
---|
208 | /* NOTE : This function should not be modified. When the callback is needed,
|
---|
209 | function HAL_RNG_MspDeInit must be implemented in the user file.
|
---|
210 | */
|
---|
211 | }
|
---|
212 |
|
---|
213 | /**
|
---|
214 | * @}
|
---|
215 | */
|
---|
216 |
|
---|
217 | /** @addtogroup RNG_Exported_Functions_Group2
|
---|
218 | * @brief Peripheral Control functions
|
---|
219 | *
|
---|
220 | @verbatim
|
---|
221 | ===============================================================================
|
---|
222 | ##### Peripheral Control functions #####
|
---|
223 | ===============================================================================
|
---|
224 | [..] This section provides functions allowing to:
|
---|
225 | (+) Get the 32 bit Random number
|
---|
226 | (+) Get the 32 bit Random number with interrupt enabled
|
---|
227 | (+) Handle RNG interrupt request
|
---|
228 |
|
---|
229 | @endverbatim
|
---|
230 | * @{
|
---|
231 | */
|
---|
232 |
|
---|
233 | /**
|
---|
234 | * @brief Generates a 32-bit random number.
|
---|
235 | * @note Each time the random number data is read the RNG_FLAG_DRDY flag
|
---|
236 | * is automatically cleared.
|
---|
237 | * @param hrng: pointer to a RNG_HandleTypeDef structure that contains
|
---|
238 | * the configuration information for RNG.
|
---|
239 | * @param random32bit: pointer to generated random number variable if successful.
|
---|
240 | * @retval HAL status
|
---|
241 | */
|
---|
242 |
|
---|
243 | HAL_StatusTypeDef HAL_RNG_GenerateRandomNumber(RNG_HandleTypeDef *hrng, uint32_t *random32bit)
|
---|
244 | {
|
---|
245 | uint32_t tickstart = 0;
|
---|
246 | HAL_StatusTypeDef status = HAL_OK;
|
---|
247 |
|
---|
248 | /* Process Locked */
|
---|
249 | __HAL_LOCK(hrng);
|
---|
250 |
|
---|
251 | /* Check RNG peripheral state */
|
---|
252 | if(hrng->State == HAL_RNG_STATE_READY)
|
---|
253 | {
|
---|
254 | /* Change RNG peripheral state */
|
---|
255 | hrng->State = HAL_RNG_STATE_BUSY;
|
---|
256 |
|
---|
257 | /* Get tick */
|
---|
258 | tickstart = HAL_GetTick();
|
---|
259 |
|
---|
260 | /* Check if data register contains valid random data */
|
---|
261 | while(__HAL_RNG_GET_FLAG(hrng, RNG_FLAG_DRDY) == RESET)
|
---|
262 | {
|
---|
263 | if((HAL_GetTick() - tickstart ) > RNG_TIMEOUT_VALUE)
|
---|
264 | {
|
---|
265 | hrng->State = HAL_RNG_STATE_ERROR;
|
---|
266 |
|
---|
267 | /* Process Unlocked */
|
---|
268 | __HAL_UNLOCK(hrng);
|
---|
269 |
|
---|
270 | return HAL_TIMEOUT;
|
---|
271 | }
|
---|
272 | }
|
---|
273 |
|
---|
274 | /* Get a 32bit Random number */
|
---|
275 | hrng->RandomNumber = hrng->Instance->DR;
|
---|
276 | *random32bit = hrng->RandomNumber;
|
---|
277 |
|
---|
278 | hrng->State = HAL_RNG_STATE_READY;
|
---|
279 | }
|
---|
280 | else
|
---|
281 | {
|
---|
282 | status = HAL_ERROR;
|
---|
283 | }
|
---|
284 |
|
---|
285 | /* Process Unlocked */
|
---|
286 | __HAL_UNLOCK(hrng);
|
---|
287 |
|
---|
288 | return status;
|
---|
289 | }
|
---|
290 |
|
---|
291 | /**
|
---|
292 | * @brief Generates a 32-bit random number in interrupt mode.
|
---|
293 | * @param hrng: pointer to a RNG_HandleTypeDef structure that contains
|
---|
294 | * the configuration information for RNG.
|
---|
295 | * @retval HAL status
|
---|
296 | */
|
---|
297 | HAL_StatusTypeDef HAL_RNG_GenerateRandomNumber_IT(RNG_HandleTypeDef *hrng)
|
---|
298 | {
|
---|
299 | HAL_StatusTypeDef status = HAL_OK;
|
---|
300 |
|
---|
301 | /* Process Locked */
|
---|
302 | __HAL_LOCK(hrng);
|
---|
303 |
|
---|
304 | /* Check RNG peripheral state */
|
---|
305 | if(hrng->State == HAL_RNG_STATE_READY)
|
---|
306 | {
|
---|
307 | /* Change RNG peripheral state */
|
---|
308 | hrng->State = HAL_RNG_STATE_BUSY;
|
---|
309 |
|
---|
310 | /* Process Unlocked */
|
---|
311 | __HAL_UNLOCK(hrng);
|
---|
312 |
|
---|
313 | /* Enable the RNG Interrupts: Data Ready, Clock error, Seed error */
|
---|
314 | __HAL_RNG_ENABLE_IT(hrng);
|
---|
315 | }
|
---|
316 | else
|
---|
317 | {
|
---|
318 | /* Process Unlocked */
|
---|
319 | __HAL_UNLOCK(hrng);
|
---|
320 |
|
---|
321 | status = HAL_ERROR;
|
---|
322 | }
|
---|
323 |
|
---|
324 | return status;
|
---|
325 | }
|
---|
326 |
|
---|
327 | /**
|
---|
328 | * @brief Handles RNG interrupt request.
|
---|
329 | * @note In the case of a clock error, the RNG is no more able to generate
|
---|
330 | * random numbers because the PLL48CLK clock is not correct. User has
|
---|
331 | * to check that the clock controller is correctly configured to provide
|
---|
332 | * the RNG clock and clear the CEIS bit using __HAL_RNG_CLEAR_IT().
|
---|
333 | * The clock error has no impact on the previously generated
|
---|
334 | * random numbers, and the RNG_DR register contents can be used.
|
---|
335 | * @note In the case of a seed error, the generation of random numbers is
|
---|
336 | * interrupted as long as the SECS bit is '1'. If a number is
|
---|
337 | * available in the RNG_DR register, it must not be used because it may
|
---|
338 | * not have enough entropy. In this case, it is recommended to clear the
|
---|
339 | * SEIS bit using __HAL_RNG_CLEAR_IT(), then disable and enable
|
---|
340 | * the RNG peripheral to reinitialize and restart the RNG.
|
---|
341 | * @note User-written HAL_RNG_ErrorCallback() API is called once whether SEIS
|
---|
342 | * or CEIS are set.
|
---|
343 | * @param hrng: pointer to a RNG_HandleTypeDef structure that contains
|
---|
344 | * the configuration information for RNG.
|
---|
345 | * @retval None
|
---|
346 |
|
---|
347 | */
|
---|
348 | void HAL_RNG_IRQHandler(RNG_HandleTypeDef *hrng)
|
---|
349 | {
|
---|
350 | /* RNG clock error interrupt occurred */
|
---|
351 | if((__HAL_RNG_GET_IT(hrng, RNG_IT_CEI) != RESET) || (__HAL_RNG_GET_IT(hrng, RNG_IT_SEI) != RESET))
|
---|
352 | {
|
---|
353 | /* Change RNG peripheral state */
|
---|
354 | hrng->State = HAL_RNG_STATE_ERROR;
|
---|
355 |
|
---|
356 | HAL_RNG_ErrorCallback(hrng);
|
---|
357 |
|
---|
358 | /* Clear the clock error flag */
|
---|
359 | __HAL_RNG_CLEAR_IT(hrng, RNG_IT_CEI|RNG_IT_SEI);
|
---|
360 |
|
---|
361 | }
|
---|
362 |
|
---|
363 | /* Check RNG data ready interrupt occurred */
|
---|
364 | if(__HAL_RNG_GET_IT(hrng, RNG_IT_DRDY) != RESET)
|
---|
365 | {
|
---|
366 | /* Generate random number once, so disable the IT */
|
---|
367 | __HAL_RNG_DISABLE_IT(hrng);
|
---|
368 |
|
---|
369 | /* Get the 32bit Random number (DRDY flag automatically cleared) */
|
---|
370 | hrng->RandomNumber = hrng->Instance->DR;
|
---|
371 |
|
---|
372 | if(hrng->State != HAL_RNG_STATE_ERROR)
|
---|
373 | {
|
---|
374 | /* Change RNG peripheral state */
|
---|
375 | hrng->State = HAL_RNG_STATE_READY;
|
---|
376 |
|
---|
377 | /* Data Ready callback */
|
---|
378 | HAL_RNG_ReadyDataCallback(hrng, hrng->RandomNumber);
|
---|
379 | }
|
---|
380 | }
|
---|
381 | }
|
---|
382 |
|
---|
383 | /**
|
---|
384 | * @brief Returns generated random number in polling mode (Obsolete)
|
---|
385 | * Use HAL_RNG_GenerateRandomNumber() API instead.
|
---|
386 | * @param hrng: pointer to a RNG_HandleTypeDef structure that contains
|
---|
387 | * the configuration information for RNG.
|
---|
388 | * @retval Random value
|
---|
389 | */
|
---|
390 | uint32_t HAL_RNG_GetRandomNumber(RNG_HandleTypeDef *hrng)
|
---|
391 | {
|
---|
392 | if(HAL_RNG_GenerateRandomNumber(hrng, &(hrng->RandomNumber)) == HAL_OK)
|
---|
393 | {
|
---|
394 | return hrng->RandomNumber;
|
---|
395 | }
|
---|
396 | else
|
---|
397 | {
|
---|
398 | return 0;
|
---|
399 | }
|
---|
400 | }
|
---|
401 |
|
---|
402 | /**
|
---|
403 | * @brief Returns a 32-bit random number with interrupt enabled (Obsolete),
|
---|
404 | * Use HAL_RNG_GenerateRandomNumber_IT() API instead.
|
---|
405 | * @param hrng: pointer to a RNG_HandleTypeDef structure that contains
|
---|
406 | * the configuration information for RNG.
|
---|
407 | * @retval 32-bit random number
|
---|
408 | */
|
---|
409 | uint32_t HAL_RNG_GetRandomNumber_IT(RNG_HandleTypeDef *hrng)
|
---|
410 | {
|
---|
411 | uint32_t random32bit = 0;
|
---|
412 |
|
---|
413 | /* Process locked */
|
---|
414 | __HAL_LOCK(hrng);
|
---|
415 |
|
---|
416 | /* Change RNG peripheral state */
|
---|
417 | hrng->State = HAL_RNG_STATE_BUSY;
|
---|
418 |
|
---|
419 | /* Get a 32bit Random number */
|
---|
420 | random32bit = hrng->Instance->DR;
|
---|
421 |
|
---|
422 | /* Enable the RNG Interrupts: Data Ready, Clock error, Seed error */
|
---|
423 | __HAL_RNG_ENABLE_IT(hrng);
|
---|
424 |
|
---|
425 | /* Return the 32 bit random number */
|
---|
426 | return random32bit;
|
---|
427 | }
|
---|
428 |
|
---|
429 | /**
|
---|
430 | * @brief Read latest generated random number.
|
---|
431 | * @param hrng: pointer to a RNG_HandleTypeDef structure that contains
|
---|
432 | * the configuration information for RNG.
|
---|
433 | * @retval random value
|
---|
434 | */
|
---|
435 | uint32_t HAL_RNG_ReadLastRandomNumber(RNG_HandleTypeDef *hrng)
|
---|
436 | {
|
---|
437 | return(hrng->RandomNumber);
|
---|
438 | }
|
---|
439 |
|
---|
440 | /**
|
---|
441 | * @brief Data Ready callback in non-blocking mode.
|
---|
442 | * @param hrng: pointer to a RNG_HandleTypeDef structure that contains
|
---|
443 | * the configuration information for RNG.
|
---|
444 | * @param random32bit: generated random number.
|
---|
445 | * @retval None
|
---|
446 | */
|
---|
447 | __weak void HAL_RNG_ReadyDataCallback(RNG_HandleTypeDef *hrng, uint32_t random32bit)
|
---|
448 | {
|
---|
449 | /* NOTE : This function should not be modified. When the callback is needed,
|
---|
450 | function HAL_RNG_ReadyDataCallback must be implemented in the user file.
|
---|
451 | */
|
---|
452 | }
|
---|
453 |
|
---|
454 | /**
|
---|
455 | * @brief RNG error callbacks.
|
---|
456 | * @param hrng: pointer to a RNG_HandleTypeDef structure that contains
|
---|
457 | * the configuration information for RNG.
|
---|
458 | * @retval None
|
---|
459 | */
|
---|
460 | __weak void HAL_RNG_ErrorCallback(RNG_HandleTypeDef *hrng)
|
---|
461 | {
|
---|
462 | /* NOTE : This function should not be modified. When the callback is needed,
|
---|
463 | function HAL_RNG_ErrorCallback must be implemented in the user file.
|
---|
464 | */
|
---|
465 | }
|
---|
466 | /**
|
---|
467 | * @}
|
---|
468 | */
|
---|
469 |
|
---|
470 |
|
---|
471 | /** @addtogroup RNG_Exported_Functions_Group3
|
---|
472 | * @brief Peripheral State functions
|
---|
473 | *
|
---|
474 | @verbatim
|
---|
475 | ===============================================================================
|
---|
476 | ##### Peripheral State functions #####
|
---|
477 | ===============================================================================
|
---|
478 | [..]
|
---|
479 | This subsection permits to get in run-time the status of the peripheral
|
---|
480 | and the data flow.
|
---|
481 |
|
---|
482 | @endverbatim
|
---|
483 | * @{
|
---|
484 | */
|
---|
485 |
|
---|
486 | /**
|
---|
487 | * @brief Returns the RNG state.
|
---|
488 | * @param hrng: pointer to a RNG_HandleTypeDef structure that contains
|
---|
489 | * the configuration information for RNG.
|
---|
490 | * @retval HAL state
|
---|
491 | */
|
---|
492 | HAL_RNG_StateTypeDef HAL_RNG_GetState(RNG_HandleTypeDef *hrng)
|
---|
493 | {
|
---|
494 | return hrng->State;
|
---|
495 | }
|
---|
496 |
|
---|
497 | /**
|
---|
498 | * @}
|
---|
499 | */
|
---|
500 |
|
---|
501 | /**
|
---|
502 | * @}
|
---|
503 | */
|
---|
504 |
|
---|
505 | #endif /* STM32F405xx || STM32F415xx || STM32F407xx || STM32F417xx || STM32F427xx || STM32F437xx ||\
|
---|
506 | STM32F429xx || STM32F439xx || STM32F410xx || STM32F469xx || STM32F479xx */
|
---|
507 |
|
---|
508 | #endif /* HAL_RNG_MODULE_ENABLED */
|
---|
509 |
|
---|
510 | /**
|
---|
511 | * @}
|
---|
512 | */
|
---|
513 |
|
---|
514 | /**
|
---|
515 | * @}
|
---|
516 | */
|
---|
517 |
|
---|
518 | /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
|
---|