1 /**
2 ******************************************************************************
3 * @file stm32g4xx_ll_comp.c
4 * @author MCD Application Team
5 * @brief COMP LL module driver
6 ******************************************************************************
7 * @attention
8 *
9 * Copyright (c) 2019 STMicroelectronics.
10 * All rights reserved.
11 *
12 * This software is licensed under terms that can be found in the LICENSE file
13 * in the root directory of this software component.
14 * If no LICENSE file comes with this software, it is provided AS-IS.
15 *
16 ******************************************************************************
17 */
18 #if defined(USE_FULL_LL_DRIVER)
19
20 /* Includes ------------------------------------------------------------------*/
21 #include "stm32g4xx_ll_comp.h"
22
23 #ifdef USE_FULL_ASSERT
24 #include "stm32_assert.h"
25 #else
26 #define assert_param(expr) ((void)0U)
27 #endif /* USE_FULL_ASSERT */
28
29 /** @addtogroup STM32G4xx_LL_Driver
30 * @{
31 */
32
33
34
35 /** @addtogroup COMP_LL COMP
36 * @{
37 */
38
39 /* Private types -------------------------------------------------------------*/
40 /* Private variables ---------------------------------------------------------*/
41 /* Private constants ---------------------------------------------------------*/
42 /* Private macros ------------------------------------------------------------*/
43
44 /** @addtogroup COMP_LL_Private_Macros
45 * @{
46 */
47
48 /* Check of parameters for configuration of COMP hierarchical scope: */
49 /* COMP instance. */
50
51 /* Note: On this STM32 series, comparator input plus parameters are */
52 /* the same on all COMP instances. */
53 /* However, comparator instance kept as macro parameter for */
54 /* compatibility with other STM32 families. */
55 #define IS_LL_COMP_INPUT_PLUS(__COMP_INSTANCE__, __INPUT_PLUS__) \
56 ( ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO1) \
57 || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO2) \
58 )
59 #if defined(STM32G474xx) || defined(STM32G484xx) || defined(STM32G473xx) || defined(STM32G483xx)
60 #define IS_LL_COMP_INPUT_MINUS(__COMP_INSTANCE__, __INPUT_MINUS__) \
61 (((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_1_4VREFINT) || \
62 ((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_1_2VREFINT) || \
63 ((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_3_4VREFINT) || \
64 ((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_VREFINT) || \
65 ((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_IO1) || \
66 ((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_IO2) || \
67 (((__COMP_INSTANCE__) == COMP1) && \
68 (((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_DAC1_CH1) || \
69 ((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_DAC3_CH1)) \
70 ) || \
71 (((__COMP_INSTANCE__) == COMP2) && \
72 (((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_DAC1_CH2) || \
73 ((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_DAC3_CH2)) \
74 ) || \
75 (((__COMP_INSTANCE__) == COMP3) && \
76 (((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_DAC1_CH1) || \
77 ((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_DAC3_CH1)) \
78 ) || \
79 (((__COMP_INSTANCE__) == COMP4) && \
80 (((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_DAC1_CH1) || \
81 ((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_DAC3_CH2)) \
82 ) || \
83 (((__COMP_INSTANCE__) == COMP5) && \
84 (((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_DAC1_CH2) || \
85 ((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_DAC4_CH1)) \
86 ) || \
87 (((__COMP_INSTANCE__) == COMP6) && \
88 (((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_DAC2_CH1) || \
89 ((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_DAC4_CH2)) \
90 ) || \
91 (((__COMP_INSTANCE__) == COMP7) && \
92 (((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_DAC2_CH1) || \
93 ((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_DAC4_CH1)) \
94 ))
95 #elif defined(STM32GBK1CB) || defined(STM32G431xx) || defined(STM32G441xx) || defined(STM32G471xx) || defined(STM32G491xx) || defined(STM32G4A1xx)
96 #define IS_LL_COMP_INPUT_MINUS(__COMP_INSTANCE__, __INPUT_MINUS__) \
97 (((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_1_4VREFINT) || \
98 ((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_1_2VREFINT) || \
99 ((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_3_4VREFINT) || \
100 ((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_VREFINT) || \
101 ((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_IO1) || \
102 ((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_IO2) || \
103 (((__COMP_INSTANCE__) == COMP1) && \
104 (((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_DAC1_CH1) || \
105 ((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_DAC3_CH1)) \
106 ) || \
107 (((__COMP_INSTANCE__) == COMP2) && \
108 (((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_DAC1_CH2) || \
109 ((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_DAC3_CH2)) \
110 ) || \
111 (((__COMP_INSTANCE__) == COMP3) && \
112 (((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_DAC1_CH1) || \
113 ((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_DAC3_CH1)) \
114 ) || \
115 (((__COMP_INSTANCE__) == COMP4) && \
116 (((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_DAC1_CH1) || \
117 ((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_DAC3_CH2)) \
118 ))
119 #endif
120
121 #define IS_LL_COMP_INPUT_HYSTERESIS(__INPUT_HYSTERESIS__) \
122 ( ((__INPUT_HYSTERESIS__) == LL_COMP_HYSTERESIS_NONE) \
123 || ((__INPUT_HYSTERESIS__) == LL_COMP_HYSTERESIS_10MV) \
124 || ((__INPUT_HYSTERESIS__) == LL_COMP_HYSTERESIS_20MV) \
125 || ((__INPUT_HYSTERESIS__) == LL_COMP_HYSTERESIS_30MV) \
126 || ((__INPUT_HYSTERESIS__) == LL_COMP_HYSTERESIS_40MV) \
127 || ((__INPUT_HYSTERESIS__) == LL_COMP_HYSTERESIS_50MV) \
128 || ((__INPUT_HYSTERESIS__) == LL_COMP_HYSTERESIS_60MV) \
129 || ((__INPUT_HYSTERESIS__) == LL_COMP_HYSTERESIS_70MV) \
130 )
131
132 #define IS_LL_COMP_OUTPUT_POLARITY(__POLARITY__) \
133 ( ((__POLARITY__) == LL_COMP_OUTPUTPOL_NONINVERTED) \
134 || ((__POLARITY__) == LL_COMP_OUTPUTPOL_INVERTED) \
135 )
136
137 #if defined(STM32G474xx) || defined(STM32G484xx) || defined(STM32G473xx) || defined(STM32G483xx)
138 #define IS_LL_COMP_OUTPUT_BLANKING_SOURCE(__INSTANCE__, __OUTPUT_BLANKING_SOURCE__) \
139 ((((__INSTANCE__) == COMP1) && \
140 (((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_NONE) || \
141 ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM1_OC5_COMP1) || \
142 ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM2_OC3_COMP1) || \
143 ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM3_OC3_COMP1) || \
144 ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM8_OC5_COMP1))) \
145 || \
146 (((__INSTANCE__) == COMP2) && \
147 (((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_NONE) || \
148 ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM1_OC5_COMP2) || \
149 ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM2_OC3_COMP2) || \
150 ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM3_OC3_COMP2) || \
151 ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM8_OC5_COMP2))) \
152 || \
153 (((__INSTANCE__) == COMP3) && \
154 (((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_NONE) || \
155 ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM1_OC5_COMP3) || \
156 ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM2_OC4_COMP3) || \
157 ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM3_OC3_COMP3) || \
158 ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM8_OC5_COMP3))) \
159 || \
160 (((__INSTANCE__) == COMP4) && \
161 (((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_NONE) || \
162 ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM1_OC5_COMP4) || \
163 ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM3_OC4_COMP4) || \
164 ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM8_OC5_COMP4) || \
165 ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM15_OC1_COMP4))) \
166 || \
167 (((__INSTANCE__) == COMP5) && \
168 (((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_NONE) || \
169 ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM1_OC5_COMP5) || \
170 ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM2_OC3_COMP5) || \
171 ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM3_OC3_COMP5) || \
172 ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM8_OC5_COMP5))) \
173 || \
174 (((__INSTANCE__) == COMP6) && \
175 (((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_NONE) || \
176 ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM1_OC5_COMP6) || \
177 ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM2_OC4_COMP6) || \
178 ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM8_OC5_COMP6) || \
179 ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM15_OC2_COMP6))) \
180 || \
181 (((__INSTANCE__) == COMP7) && \
182 (((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_NONE) || \
183 ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM1_OC5_COMP7) || \
184 ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM3_OC3_COMP7) || \
185 ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM8_OC5_COMP7) || \
186 ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM15_OC2_COMP7))) \
187 || ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM20_OC5) \
188 || ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM15_OC1) \
189 || ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM4_OC3) \
190 )
191 #elif defined(STM32GBK1CB) || defined(STM32G431xx) || defined(STM32G441xx) || defined(STM32G471xx)
192 #define IS_LL_COMP_OUTPUT_BLANKING_SOURCE(__INSTANCE__, __OUTPUT_BLANKING_SOURCE__) \
193 ((((__INSTANCE__) == COMP1) && \
194 (((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_NONE) || \
195 ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM1_OC5_COMP1) || \
196 ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM2_OC3_COMP1) || \
197 ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM3_OC3_COMP1) || \
198 ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM8_OC5_COMP1))) \
199 || \
200 (((__INSTANCE__) == COMP2) && \
201 (((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_NONE) || \
202 ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM1_OC5_COMP2) || \
203 ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM2_OC3_COMP2) || \
204 ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM3_OC3_COMP2) || \
205 ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM8_OC5_COMP2))) \
206 || \
207 (((__INSTANCE__) == COMP3) && \
208 (((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_NONE) || \
209 ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM1_OC5_COMP3) || \
210 ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM2_OC4_COMP3) || \
211 ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM3_OC3_COMP3) || \
212 ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM8_OC5_COMP3))) \
213 || \
214 (((__INSTANCE__) == COMP4) && \
215 (((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_NONE) || \
216 ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM1_OC5_COMP4) || \
217 ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM3_OC4_COMP4) || \
218 ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM8_OC5_COMP4) || \
219 ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM15_OC1_COMP4))) \
220 || ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM15_OC1) \
221 || ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM4_OC3) \
222 )
223 #elif defined(STM32G491xx) || defined(STM32G4A1xx)
224 #define IS_LL_COMP_OUTPUT_BLANKING_SOURCE(__INSTANCE__, __OUTPUT_BLANKING_SOURCE__) \
225 ((((__INSTANCE__) == COMP1) && \
226 (((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_NONE) || \
227 ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM1_OC5_COMP1) || \
228 ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM2_OC3_COMP1) || \
229 ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM3_OC3_COMP1) || \
230 ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM8_OC5_COMP1))) \
231 || \
232 (((__INSTANCE__) == COMP2) && \
233 (((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_NONE) || \
234 ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM1_OC5_COMP2) || \
235 ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM2_OC3_COMP2) || \
236 ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM3_OC3_COMP2) || \
237 ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM8_OC5_COMP2))) \
238 || \
239 (((__INSTANCE__) == COMP3) && \
240 (((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_NONE) || \
241 ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM1_OC5_COMP3) || \
242 ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM2_OC4_COMP3) || \
243 ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM3_OC3_COMP3) || \
244 ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM8_OC5_COMP3))) \
245 || \
246 (((__INSTANCE__) == COMP4) && \
247 (((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_NONE) || \
248 ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM1_OC5_COMP4) || \
249 ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM3_OC4_COMP4) || \
250 ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM8_OC5_COMP4) || \
251 ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM15_OC1_COMP4))) \
252 || ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM20_OC5) \
253 || ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM15_OC1) \
254 || ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM4_OC3) \
255 )
256 #endif
257 /**
258 * @}
259 */
260
261
262 /* Private function prototypes -----------------------------------------------*/
263
264 /* Exported functions --------------------------------------------------------*/
265 /** @addtogroup COMP_LL_Exported_Functions
266 * @{
267 */
268
269 /** @addtogroup COMP_LL_EF_Init
270 * @{
271 */
272
273 /**
274 * @brief De-initialize registers of the selected COMP instance
275 * to their default reset values.
276 * @note If comparator is locked, de-initialization by software is
277 * not possible.
278 * The only way to unlock the comparator is a device hardware reset.
279 * @param COMPx COMP instance
280 * @retval An ErrorStatus enumeration value:
281 * - SUCCESS: COMP registers are de-initialized
282 * - ERROR: COMP registers are not de-initialized
283 */
LL_COMP_DeInit(COMP_TypeDef * COMPx)284 ErrorStatus LL_COMP_DeInit(COMP_TypeDef *COMPx)
285 {
286 ErrorStatus status = SUCCESS;
287
288 /* Check the parameters */
289 assert_param(IS_COMP_ALL_INSTANCE(COMPx));
290
291 /* Note: Hardware constraint (refer to description of this function): */
292 /* COMP instance must not be locked. */
293 if (LL_COMP_IsLocked(COMPx) == 0UL)
294 {
295 LL_COMP_WriteReg(COMPx, CSR, 0x00000000UL);
296
297 }
298 else
299 {
300 /* Comparator instance is locked: de-initialization by software is */
301 /* not possible. */
302 /* The only way to unlock the comparator is a device hardware reset. */
303 status = ERROR;
304 }
305
306 return status;
307 }
308
309 /**
310 * @brief Initialize some features of COMP instance.
311 * @note This function configures features of the selected COMP instance.
312 * Some features are also available at scope COMP common instance
313 * (common to several COMP instances).
314 * Refer to functions having argument "COMPxy_COMMON" as parameter.
315 * @param COMPx COMP instance
316 * @param COMP_InitStruct Pointer to a @ref LL_COMP_InitTypeDef structure
317 * @retval An ErrorStatus enumeration value:
318 * - SUCCESS: COMP registers are initialized
319 * - ERROR: COMP registers are not initialized
320 */
LL_COMP_Init(COMP_TypeDef * COMPx,LL_COMP_InitTypeDef * COMP_InitStruct)321 ErrorStatus LL_COMP_Init(COMP_TypeDef *COMPx, LL_COMP_InitTypeDef *COMP_InitStruct)
322 {
323 ErrorStatus status = SUCCESS;
324
325 /* Check the parameters */
326 assert_param(IS_COMP_ALL_INSTANCE(COMPx));
327 assert_param(IS_LL_COMP_INPUT_PLUS(COMPx, COMP_InitStruct->InputPlus));
328 assert_param(IS_LL_COMP_INPUT_MINUS(COMPx, COMP_InitStruct->InputMinus));
329 assert_param(IS_LL_COMP_INPUT_HYSTERESIS(COMP_InitStruct->InputHysteresis));
330 assert_param(IS_LL_COMP_OUTPUT_POLARITY(COMP_InitStruct->OutputPolarity));
331 assert_param(IS_LL_COMP_OUTPUT_BLANKING_SOURCE(COMPx, COMP_InitStruct->OutputBlankingSource));
332
333 /* Note: Hardware constraint (refer to description of this function) */
334 /* COMP instance must not be locked. */
335 if (LL_COMP_IsLocked(COMPx) == 0UL)
336 {
337 /* Configuration of comparator instance : */
338 /* - InputPlus */
339 /* - InputMinus */
340 /* - InputHysteresis */
341 /* - OutputPolarity */
342 /* - OutputBlankingSource */
343 MODIFY_REG(COMPx->CSR,
344 COMP_CSR_INPSEL
345 | COMP_CSR_SCALEN
346 | COMP_CSR_BRGEN
347 | COMP_CSR_INMSEL
348 | COMP_CSR_HYST
349 | COMP_CSR_POLARITY
350 | COMP_CSR_BLANKING
351 ,
352 COMP_InitStruct->InputPlus
353 | COMP_InitStruct->InputMinus
354 | COMP_InitStruct->InputHysteresis
355 | COMP_InitStruct->OutputPolarity
356 | COMP_InitStruct->OutputBlankingSource
357 );
358
359 }
360 else
361 {
362 /* Initialization error: COMP instance is locked. */
363 status = ERROR;
364 }
365
366 return status;
367 }
368
369 /**
370 * @brief Set each @ref LL_COMP_InitTypeDef field to default value.
371 * @param COMP_InitStruct Pointer to a @ref LL_COMP_InitTypeDef structure
372 * whose fields will be set to default values.
373 * @retval None
374 */
LL_COMP_StructInit(LL_COMP_InitTypeDef * COMP_InitStruct)375 void LL_COMP_StructInit(LL_COMP_InitTypeDef *COMP_InitStruct)
376 {
377 /* Set COMP_InitStruct fields to default values */
378 COMP_InitStruct->InputPlus = LL_COMP_INPUT_PLUS_IO1;
379 COMP_InitStruct->InputMinus = LL_COMP_INPUT_MINUS_VREFINT;
380 COMP_InitStruct->InputHysteresis = LL_COMP_HYSTERESIS_NONE;
381 COMP_InitStruct->OutputPolarity = LL_COMP_OUTPUTPOL_NONINVERTED;
382 COMP_InitStruct->OutputBlankingSource = LL_COMP_BLANKINGSRC_NONE;
383 }
384
385 /**
386 * @}
387 */
388
389 /**
390 * @}
391 */
392
393 /**
394 * @}
395 */
396
397
398
399 /**
400 * @}
401 */
402
403 #endif /* USE_FULL_LL_DRIVER */
404
