提交 | 用户 | age
|
483170
|
1 |
/** |
Q |
2 |
****************************************************************************** |
|
3 |
* @file stm32f0xx_ll_wwdg.h |
|
4 |
* @author MCD Application Team |
|
5 |
* @brief Header file of WWDG LL module. |
|
6 |
****************************************************************************** |
|
7 |
* @attention |
|
8 |
* |
|
9 |
* <h2><center>© COPYRIGHT(c) 2016 STMicroelectronics</center></h2> |
|
10 |
* |
|
11 |
* Redistribution and use in source and binary forms, with or without modification, |
|
12 |
* are permitted provided that the following conditions are met: |
|
13 |
* 1. Redistributions of source code must retain the above copyright notice, |
|
14 |
* this list of conditions and the following disclaimer. |
|
15 |
* 2. Redistributions in binary form must reproduce the above copyright notice, |
|
16 |
* this list of conditions and the following disclaimer in the documentation |
|
17 |
* and/or other materials provided with the distribution. |
|
18 |
* 3. Neither the name of STMicroelectronics nor the names of its contributors |
|
19 |
* may be used to endorse or promote products derived from this software |
|
20 |
* without specific prior written permission. |
|
21 |
* |
|
22 |
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
|
23 |
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
|
24 |
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
|
25 |
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
|
26 |
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
|
27 |
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
|
28 |
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
|
29 |
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
|
30 |
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
|
31 |
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
|
32 |
* |
|
33 |
****************************************************************************** |
|
34 |
*/ |
|
35 |
|
|
36 |
/* Define to prevent recursive inclusion -------------------------------------*/ |
|
37 |
#ifndef __STM32F0xx_LL_WWDG_H |
|
38 |
#define __STM32F0xx_LL_WWDG_H |
|
39 |
|
|
40 |
#ifdef __cplusplus |
|
41 |
extern "C" { |
|
42 |
#endif |
|
43 |
|
|
44 |
/* Includes ------------------------------------------------------------------*/ |
|
45 |
#include "stm32f0xx.h" |
|
46 |
|
|
47 |
/** @addtogroup STM32F0xx_LL_Driver |
|
48 |
* @{ |
|
49 |
*/ |
|
50 |
|
|
51 |
#if defined (WWDG) |
|
52 |
|
|
53 |
/** @defgroup WWDG_LL WWDG |
|
54 |
* @{ |
|
55 |
*/ |
|
56 |
|
|
57 |
/* Private types -------------------------------------------------------------*/ |
|
58 |
/* Private variables ---------------------------------------------------------*/ |
|
59 |
|
|
60 |
/* Private constants ---------------------------------------------------------*/ |
|
61 |
|
|
62 |
/* Private macros ------------------------------------------------------------*/ |
|
63 |
|
|
64 |
/* Exported types ------------------------------------------------------------*/ |
|
65 |
/* Exported constants --------------------------------------------------------*/ |
|
66 |
/** @defgroup WWDG_LL_Exported_Constants WWDG Exported Constants |
|
67 |
* @{ |
|
68 |
*/ |
|
69 |
|
|
70 |
|
|
71 |
/** @defgroup WWDG_LL_EC_IT IT Defines |
|
72 |
* @brief IT defines which can be used with LL_WWDG_ReadReg and LL_WWDG_WriteReg functions |
|
73 |
* @{ |
|
74 |
*/ |
|
75 |
#define LL_WWDG_CFR_EWI WWDG_CFR_EWI |
|
76 |
/** |
|
77 |
* @} |
|
78 |
*/ |
|
79 |
|
|
80 |
/** @defgroup WWDG_LL_EC_PRESCALER PRESCALER |
|
81 |
* @{ |
|
82 |
*/ |
|
83 |
#define LL_WWDG_PRESCALER_1 0x00000000U /*!< WWDG counter clock = (PCLK1/4096)/1 */ |
|
84 |
#define LL_WWDG_PRESCALER_2 WWDG_CFR_WDGTB_0 /*!< WWDG counter clock = (PCLK1/4096)/2 */ |
|
85 |
#define LL_WWDG_PRESCALER_4 WWDG_CFR_WDGTB_1 /*!< WWDG counter clock = (PCLK1/4096)/4 */ |
|
86 |
#define LL_WWDG_PRESCALER_8 (WWDG_CFR_WDGTB_0 | WWDG_CFR_WDGTB_1) /*!< WWDG counter clock = (PCLK1/4096)/8 */ |
|
87 |
/** |
|
88 |
* @} |
|
89 |
*/ |
|
90 |
|
|
91 |
/** |
|
92 |
* @} |
|
93 |
*/ |
|
94 |
|
|
95 |
/* Exported macro ------------------------------------------------------------*/ |
|
96 |
/** @defgroup WWDG_LL_Exported_Macros WWDG Exported Macros |
|
97 |
* @{ |
|
98 |
*/ |
|
99 |
/** @defgroup WWDG_LL_EM_WRITE_READ Common Write and read registers macros |
|
100 |
* @{ |
|
101 |
*/ |
|
102 |
/** |
|
103 |
* @brief Write a value in WWDG register |
|
104 |
* @param __INSTANCE__ WWDG Instance |
|
105 |
* @param __REG__ Register to be written |
|
106 |
* @param __VALUE__ Value to be written in the register |
|
107 |
* @retval None |
|
108 |
*/ |
|
109 |
#define LL_WWDG_WriteReg(__INSTANCE__, __REG__, __VALUE__) WRITE_REG(__INSTANCE__->__REG__, (__VALUE__)) |
|
110 |
|
|
111 |
/** |
|
112 |
* @brief Read a value in WWDG register |
|
113 |
* @param __INSTANCE__ WWDG Instance |
|
114 |
* @param __REG__ Register to be read |
|
115 |
* @retval Register value |
|
116 |
*/ |
|
117 |
#define LL_WWDG_ReadReg(__INSTANCE__, __REG__) READ_REG(__INSTANCE__->__REG__) |
|
118 |
/** |
|
119 |
* @} |
|
120 |
*/ |
|
121 |
|
|
122 |
|
|
123 |
/** |
|
124 |
* @} |
|
125 |
*/ |
|
126 |
|
|
127 |
/* Exported functions --------------------------------------------------------*/ |
|
128 |
/** @defgroup WWDG_LL_Exported_Functions WWDG Exported Functions |
|
129 |
* @{ |
|
130 |
*/ |
|
131 |
|
|
132 |
/** @defgroup WWDG_LL_EF_Configuration Configuration |
|
133 |
* @{ |
|
134 |
*/ |
|
135 |
/** |
|
136 |
* @brief Enable Window Watchdog. The watchdog is always disabled after a reset. |
|
137 |
* @note It is enabled by setting the WDGA bit in the WWDG_CR register, |
|
138 |
* then it cannot be disabled again except by a reset. |
|
139 |
* This bit is set by software and only cleared by hardware after a reset. |
|
140 |
* When WDGA = 1, the watchdog can generate a reset. |
|
141 |
* @rmtoll CR WDGA LL_WWDG_Enable |
|
142 |
* @param WWDGx WWDG Instance |
|
143 |
* @retval None |
|
144 |
*/ |
|
145 |
__STATIC_INLINE void LL_WWDG_Enable(WWDG_TypeDef *WWDGx) |
|
146 |
{ |
|
147 |
SET_BIT(WWDGx->CR, WWDG_CR_WDGA); |
|
148 |
} |
|
149 |
|
|
150 |
/** |
|
151 |
* @brief Checks if Window Watchdog is enabled |
|
152 |
* @rmtoll CR WDGA LL_WWDG_IsEnabled |
|
153 |
* @param WWDGx WWDG Instance |
|
154 |
* @retval State of bit (1 or 0). |
|
155 |
*/ |
|
156 |
__STATIC_INLINE uint32_t LL_WWDG_IsEnabled(WWDG_TypeDef *WWDGx) |
|
157 |
{ |
|
158 |
return (READ_BIT(WWDGx->CR, WWDG_CR_WDGA) == (WWDG_CR_WDGA)); |
|
159 |
} |
|
160 |
|
|
161 |
/** |
|
162 |
* @brief Set the Watchdog counter value to provided value (7-bits T[6:0]) |
|
163 |
* @note When writing to the WWDG_CR register, always write 1 in the MSB b6 to avoid generating an immediate reset |
|
164 |
* This counter is decremented every (4096 x 2expWDGTB) PCLK cycles |
|
165 |
* A reset is produced when it rolls over from 0x40 to 0x3F (bit T6 becomes cleared) |
|
166 |
* Setting the counter lower then 0x40 causes an immediate reset (if WWDG enabled) |
|
167 |
* @rmtoll CR T LL_WWDG_SetCounter |
|
168 |
* @param WWDGx WWDG Instance |
|
169 |
* @param Counter 0..0x7F (7 bit counter value) |
|
170 |
* @retval None |
|
171 |
*/ |
|
172 |
__STATIC_INLINE void LL_WWDG_SetCounter(WWDG_TypeDef *WWDGx, uint32_t Counter) |
|
173 |
{ |
|
174 |
MODIFY_REG(WWDGx->CR, WWDG_CR_T, Counter); |
|
175 |
} |
|
176 |
|
|
177 |
/** |
|
178 |
* @brief Return current Watchdog Counter Value (7 bits counter value) |
|
179 |
* @rmtoll CR T LL_WWDG_GetCounter |
|
180 |
* @param WWDGx WWDG Instance |
|
181 |
* @retval 7 bit Watchdog Counter value |
|
182 |
*/ |
|
183 |
__STATIC_INLINE uint32_t LL_WWDG_GetCounter(WWDG_TypeDef *WWDGx) |
|
184 |
{ |
|
185 |
return (uint32_t)(READ_BIT(WWDGx->CR, WWDG_CR_T)); |
|
186 |
} |
|
187 |
|
|
188 |
/** |
|
189 |
* @brief Set the time base of the prescaler (WDGTB). |
|
190 |
* @note Prescaler is used to apply ratio on PCLK clock, so that Watchdog counter |
|
191 |
* is decremented every (4096 x 2expWDGTB) PCLK cycles |
|
192 |
* @rmtoll CFR WDGTB LL_WWDG_SetPrescaler |
|
193 |
* @param WWDGx WWDG Instance |
|
194 |
* @param Prescaler This parameter can be one of the following values: |
|
195 |
* @arg @ref LL_WWDG_PRESCALER_1 |
|
196 |
* @arg @ref LL_WWDG_PRESCALER_2 |
|
197 |
* @arg @ref LL_WWDG_PRESCALER_4 |
|
198 |
* @arg @ref LL_WWDG_PRESCALER_8 |
|
199 |
* @retval None |
|
200 |
*/ |
|
201 |
__STATIC_INLINE void LL_WWDG_SetPrescaler(WWDG_TypeDef *WWDGx, uint32_t Prescaler) |
|
202 |
{ |
|
203 |
MODIFY_REG(WWDGx->CFR, WWDG_CFR_WDGTB, Prescaler); |
|
204 |
} |
|
205 |
|
|
206 |
/** |
|
207 |
* @brief Return current Watchdog Prescaler Value |
|
208 |
* @rmtoll CFR WDGTB LL_WWDG_GetPrescaler |
|
209 |
* @param WWDGx WWDG Instance |
|
210 |
* @retval Returned value can be one of the following values: |
|
211 |
* @arg @ref LL_WWDG_PRESCALER_1 |
|
212 |
* @arg @ref LL_WWDG_PRESCALER_2 |
|
213 |
* @arg @ref LL_WWDG_PRESCALER_4 |
|
214 |
* @arg @ref LL_WWDG_PRESCALER_8 |
|
215 |
*/ |
|
216 |
__STATIC_INLINE uint32_t LL_WWDG_GetPrescaler(WWDG_TypeDef *WWDGx) |
|
217 |
{ |
|
218 |
return (uint32_t)(READ_BIT(WWDGx->CFR, WWDG_CFR_WDGTB)); |
|
219 |
} |
|
220 |
|
|
221 |
/** |
|
222 |
* @brief Set the Watchdog Window value to be compared to the downcounter (7-bits W[6:0]). |
|
223 |
* @note This window value defines when write in the WWDG_CR register |
|
224 |
* to program Watchdog counter is allowed. |
|
225 |
* Watchdog counter value update must occur only when the counter value |
|
226 |
* is lower than the Watchdog window register value. |
|
227 |
* Otherwise, a MCU reset is generated if the 7-bit Watchdog counter value |
|
228 |
* (in the control register) is refreshed before the downcounter has reached |
|
229 |
* the watchdog window register value. |
|
230 |
* Physically is possible to set the Window lower then 0x40 but it is not recommended. |
|
231 |
* To generate an immediate reset, it is possible to set the Counter lower than 0x40. |
|
232 |
* @rmtoll CFR W LL_WWDG_SetWindow |
|
233 |
* @param WWDGx WWDG Instance |
|
234 |
* @param Window 0x00..0x7F (7 bit Window value) |
|
235 |
* @retval None |
|
236 |
*/ |
|
237 |
__STATIC_INLINE void LL_WWDG_SetWindow(WWDG_TypeDef *WWDGx, uint32_t Window) |
|
238 |
{ |
|
239 |
MODIFY_REG(WWDGx->CFR, WWDG_CFR_W, Window); |
|
240 |
} |
|
241 |
|
|
242 |
/** |
|
243 |
* @brief Return current Watchdog Window Value (7 bits value) |
|
244 |
* @rmtoll CFR W LL_WWDG_GetWindow |
|
245 |
* @param WWDGx WWDG Instance |
|
246 |
* @retval 7 bit Watchdog Window value |
|
247 |
*/ |
|
248 |
__STATIC_INLINE uint32_t LL_WWDG_GetWindow(WWDG_TypeDef *WWDGx) |
|
249 |
{ |
|
250 |
return (uint32_t)(READ_BIT(WWDGx->CFR, WWDG_CFR_W)); |
|
251 |
} |
|
252 |
|
|
253 |
/** |
|
254 |
* @} |
|
255 |
*/ |
|
256 |
|
|
257 |
/** @defgroup WWDG_LL_EF_FLAG_Management FLAG_Management |
|
258 |
* @{ |
|
259 |
*/ |
|
260 |
/** |
|
261 |
* @brief Indicates if the WWDG Early Wakeup Interrupt Flag is set or not. |
|
262 |
* @note This bit is set by hardware when the counter has reached the value 0x40. |
|
263 |
* It must be cleared by software by writing 0. |
|
264 |
* A write of 1 has no effect. This bit is also set if the interrupt is not enabled. |
|
265 |
* @rmtoll SR EWIF LL_WWDG_IsActiveFlag_EWKUP |
|
266 |
* @param WWDGx WWDG Instance |
|
267 |
* @retval State of bit (1 or 0). |
|
268 |
*/ |
|
269 |
__STATIC_INLINE uint32_t LL_WWDG_IsActiveFlag_EWKUP(WWDG_TypeDef *WWDGx) |
|
270 |
{ |
|
271 |
return (READ_BIT(WWDGx->SR, WWDG_SR_EWIF) == (WWDG_SR_EWIF)); |
|
272 |
} |
|
273 |
|
|
274 |
/** |
|
275 |
* @brief Clear WWDG Early Wakeup Interrupt Flag (EWIF) |
|
276 |
* @rmtoll SR EWIF LL_WWDG_ClearFlag_EWKUP |
|
277 |
* @param WWDGx WWDG Instance |
|
278 |
* @retval None |
|
279 |
*/ |
|
280 |
__STATIC_INLINE void LL_WWDG_ClearFlag_EWKUP(WWDG_TypeDef *WWDGx) |
|
281 |
{ |
|
282 |
WRITE_REG(WWDGx->SR, ~WWDG_SR_EWIF); |
|
283 |
} |
|
284 |
|
|
285 |
/** |
|
286 |
* @} |
|
287 |
*/ |
|
288 |
|
|
289 |
/** @defgroup WWDG_LL_EF_IT_Management IT_Management |
|
290 |
* @{ |
|
291 |
*/ |
|
292 |
/** |
|
293 |
* @brief Enable the Early Wakeup Interrupt. |
|
294 |
* @note When set, an interrupt occurs whenever the counter reaches value 0x40. |
|
295 |
* This interrupt is only cleared by hardware after a reset |
|
296 |
* @rmtoll CFR EWI LL_WWDG_EnableIT_EWKUP |
|
297 |
* @param WWDGx WWDG Instance |
|
298 |
* @retval None |
|
299 |
*/ |
|
300 |
__STATIC_INLINE void LL_WWDG_EnableIT_EWKUP(WWDG_TypeDef *WWDGx) |
|
301 |
{ |
|
302 |
SET_BIT(WWDGx->CFR, WWDG_CFR_EWI); |
|
303 |
} |
|
304 |
|
|
305 |
/** |
|
306 |
* @brief Check if Early Wakeup Interrupt is enabled |
|
307 |
* @rmtoll CFR EWI LL_WWDG_IsEnabledIT_EWKUP |
|
308 |
* @param WWDGx WWDG Instance |
|
309 |
* @retval State of bit (1 or 0). |
|
310 |
*/ |
|
311 |
__STATIC_INLINE uint32_t LL_WWDG_IsEnabledIT_EWKUP(WWDG_TypeDef *WWDGx) |
|
312 |
{ |
|
313 |
return (READ_BIT(WWDGx->CFR, WWDG_CFR_EWI) == (WWDG_CFR_EWI)); |
|
314 |
} |
|
315 |
|
|
316 |
/** |
|
317 |
* @} |
|
318 |
*/ |
|
319 |
|
|
320 |
/** |
|
321 |
* @} |
|
322 |
*/ |
|
323 |
|
|
324 |
/** |
|
325 |
* @} |
|
326 |
*/ |
|
327 |
|
|
328 |
#endif /* WWDG */ |
|
329 |
|
|
330 |
/** |
|
331 |
* @} |
|
332 |
*/ |
|
333 |
|
|
334 |
#ifdef __cplusplus |
|
335 |
} |
|
336 |
#endif |
|
337 |
|
|
338 |
#endif /* __STM32F0xx_LL_WWDG_H */ |
|
339 |
|
|
340 |
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |