1 /**
2 ******************************************************************************
3 * @file stm32f4xx_ll_dac.c
4 * @author MCD Application Team
5 * @brief DAC LL module driver
6 ******************************************************************************
7 * @attention
8 *
9 * Copyright (c) 2016 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 "stm32f4xx_ll_dac.h"
22 #include "stm32f4xx_ll_bus.h"
23
24 #ifdef USE_FULL_ASSERT
25 #include "stm32_assert.h"
26 #else
27 #define assert_param(expr) ((void)0U)
28 #endif /* USE_FULL_ASSERT */
29
30 /** @addtogroup STM32F4xx_LL_Driver
31 * @{
32 */
33
34 #if defined(DAC)
35
36 /** @addtogroup DAC_LL DAC
37 * @{
38 */
39
40 /* Private types -------------------------------------------------------------*/
41 /* Private variables ---------------------------------------------------------*/
42 /* Private constants ---------------------------------------------------------*/
43 /* Private macros ------------------------------------------------------------*/
44
45 /** @addtogroup DAC_LL_Private_Macros
46 * @{
47 */
48 #if defined(DAC_CHANNEL2_SUPPORT)
49 #define IS_LL_DAC_CHANNEL(__DACX__, __DAC_CHANNEL__) \
50 (((__DAC_CHANNEL__) == LL_DAC_CHANNEL_1) \
51 || ((__DAC_CHANNEL__) == LL_DAC_CHANNEL_2) \
52 )
53 #else
54 #define IS_LL_DAC_CHANNEL(__DACX__, __DAC_CHANNEL__) \
55 (((__DAC_CHANNEL__) == LL_DAC_CHANNEL_1))
56 #endif /* DAC_CHANNEL2_SUPPORT */
57
58 #define IS_LL_DAC_TRIGGER_SOURCE(__TRIGGER_SOURCE__) \
59 (((__TRIGGER_SOURCE__) == LL_DAC_TRIG_SOFTWARE) \
60 || ((__TRIGGER_SOURCE__) == LL_DAC_TRIG_EXT_TIM2_TRGO) \
61 || ((__TRIGGER_SOURCE__) == LL_DAC_TRIG_EXT_TIM4_TRGO) \
62 || ((__TRIGGER_SOURCE__) == LL_DAC_TRIG_EXT_TIM5_TRGO) \
63 || ((__TRIGGER_SOURCE__) == LL_DAC_TRIG_EXT_TIM6_TRGO) \
64 || ((__TRIGGER_SOURCE__) == LL_DAC_TRIG_EXT_TIM7_TRGO) \
65 || ((__TRIGGER_SOURCE__) == LL_DAC_TRIG_EXT_TIM8_TRGO) \
66 || ((__TRIGGER_SOURCE__) == LL_DAC_TRIG_EXT_EXTI_LINE9) \
67 )
68
69 #define IS_LL_DAC_WAVE_AUTO_GENER_MODE(__WAVE_AUTO_GENERATION_MODE__) \
70 (((__WAVE_AUTO_GENERATION_MODE__) == LL_DAC_WAVE_AUTO_GENERATION_NONE) \
71 || ((__WAVE_AUTO_GENERATION_MODE__) == LL_DAC_WAVE_AUTO_GENERATION_NOISE) \
72 || ((__WAVE_AUTO_GENERATION_MODE__) == LL_DAC_WAVE_AUTO_GENERATION_TRIANGLE) \
73 )
74
75 #define IS_LL_DAC_WAVE_AUTO_GENER_CONFIG(__WAVE_AUTO_GENERATION_MODE__, __WAVE_AUTO_GENERATION_CONFIG__) \
76 ( (((__WAVE_AUTO_GENERATION_MODE__) == LL_DAC_WAVE_AUTO_GENERATION_NOISE) \
77 && (((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_NOISE_LFSR_UNMASK_BIT0) \
78 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_NOISE_LFSR_UNMASK_BITS1_0) \
79 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_NOISE_LFSR_UNMASK_BITS2_0) \
80 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_NOISE_LFSR_UNMASK_BITS3_0) \
81 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_NOISE_LFSR_UNMASK_BITS4_0) \
82 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_NOISE_LFSR_UNMASK_BITS5_0) \
83 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_NOISE_LFSR_UNMASK_BITS6_0) \
84 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_NOISE_LFSR_UNMASK_BITS7_0) \
85 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_NOISE_LFSR_UNMASK_BITS8_0) \
86 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_NOISE_LFSR_UNMASK_BITS9_0) \
87 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_NOISE_LFSR_UNMASK_BITS10_0) \
88 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_NOISE_LFSR_UNMASK_BITS11_0)) \
89 ) \
90 ||(((__WAVE_AUTO_GENERATION_MODE__) == LL_DAC_WAVE_AUTO_GENERATION_TRIANGLE) \
91 && (((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_TRIANGLE_AMPLITUDE_1) \
92 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_TRIANGLE_AMPLITUDE_3) \
93 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_TRIANGLE_AMPLITUDE_7) \
94 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_TRIANGLE_AMPLITUDE_15) \
95 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_TRIANGLE_AMPLITUDE_31) \
96 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_TRIANGLE_AMPLITUDE_63) \
97 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_TRIANGLE_AMPLITUDE_127) \
98 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_TRIANGLE_AMPLITUDE_255) \
99 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_TRIANGLE_AMPLITUDE_511) \
100 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_TRIANGLE_AMPLITUDE_1023) \
101 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_TRIANGLE_AMPLITUDE_2047) \
102 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_TRIANGLE_AMPLITUDE_4095)) \
103 ) \
104 )
105
106 #define IS_LL_DAC_OUTPUT_BUFFER(__OUTPUT_BUFFER__) \
107 (((__OUTPUT_BUFFER__) == LL_DAC_OUTPUT_BUFFER_ENABLE) \
108 || ((__OUTPUT_BUFFER__) == LL_DAC_OUTPUT_BUFFER_DISABLE) \
109 )
110
111 /**
112 * @}
113 */
114
115
116 /* Private function prototypes -----------------------------------------------*/
117
118 /* Exported functions --------------------------------------------------------*/
119 /** @addtogroup DAC_LL_Exported_Functions
120 * @{
121 */
122
123 /** @addtogroup DAC_LL_EF_Init
124 * @{
125 */
126
127 /**
128 * @brief De-initialize registers of the selected DAC instance
129 * to their default reset values.
130 * @param DACx DAC instance
131 * @retval An ErrorStatus enumeration value:
132 * - SUCCESS: DAC registers are de-initialized
133 * - ERROR: not applicable
134 */
LL_DAC_DeInit(const DAC_TypeDef * DACx)135 ErrorStatus LL_DAC_DeInit(const DAC_TypeDef *DACx)
136 {
137 /* Check the parameters */
138 assert_param(IS_DAC_ALL_INSTANCE(DACx));
139
140 /* Force reset of DAC clock */
141 LL_APB1_GRP1_ForceReset(LL_APB1_GRP1_PERIPH_DAC1);
142
143 /* Release reset of DAC clock */
144 LL_APB1_GRP1_ReleaseReset(LL_APB1_GRP1_PERIPH_DAC1);
145
146 return SUCCESS;
147 }
148
149 /**
150 * @brief Initialize some features of DAC channel.
151 * @note @ref LL_DAC_Init() aims to ease basic configuration of a DAC channel.
152 * Leaving it ready to be enabled and output:
153 * a level by calling one of
154 * @ref LL_DAC_ConvertData12RightAligned
155 * @ref LL_DAC_ConvertData12LeftAligned
156 * @ref LL_DAC_ConvertData8RightAligned
157 * or one of the supported autogenerated wave.
158 * @note This function allows configuration of:
159 * - Output mode
160 * - Trigger
161 * - Wave generation
162 * @note The setting of these parameters by function @ref LL_DAC_Init()
163 * is conditioned to DAC state:
164 * DAC channel must be disabled.
165 * @param DACx DAC instance
166 * @param DAC_Channel This parameter can be one of the following values:
167 * @arg @ref LL_DAC_CHANNEL_1
168 * @arg @ref LL_DAC_CHANNEL_2 (1)
169 *
170 * (1) On this STM32 series, parameter not available on all devices.
171 * Refer to device datasheet for channels availability.
172 * @param DAC_InitStruct Pointer to a @ref LL_DAC_InitTypeDef structure
173 * @retval An ErrorStatus enumeration value:
174 * - SUCCESS: DAC registers are initialized
175 * - ERROR: DAC registers are not initialized
176 */
LL_DAC_Init(DAC_TypeDef * DACx,uint32_t DAC_Channel,const LL_DAC_InitTypeDef * DAC_InitStruct)177 ErrorStatus LL_DAC_Init(DAC_TypeDef *DACx, uint32_t DAC_Channel, const LL_DAC_InitTypeDef *DAC_InitStruct)
178 {
179 ErrorStatus status = SUCCESS;
180
181 /* Check the parameters */
182 assert_param(IS_DAC_ALL_INSTANCE(DACx));
183 assert_param(IS_LL_DAC_CHANNEL(DACx, DAC_Channel));
184 assert_param(IS_LL_DAC_TRIGGER_SOURCE(DAC_InitStruct->TriggerSource));
185 assert_param(IS_LL_DAC_OUTPUT_BUFFER(DAC_InitStruct->OutputBuffer));
186 assert_param(IS_LL_DAC_WAVE_AUTO_GENER_MODE(DAC_InitStruct->WaveAutoGeneration));
187 if (DAC_InitStruct->WaveAutoGeneration != LL_DAC_WAVE_AUTO_GENERATION_NONE)
188 {
189 assert_param(IS_LL_DAC_WAVE_AUTO_GENER_CONFIG(DAC_InitStruct->WaveAutoGeneration,
190 DAC_InitStruct->WaveAutoGenerationConfig));
191 }
192
193 /* Note: Hardware constraint (refer to description of this function) */
194 /* DAC instance must be disabled. */
195 if (LL_DAC_IsEnabled(DACx, DAC_Channel) == 0UL)
196 {
197 /* Configuration of DAC channel: */
198 /* - TriggerSource */
199 /* - WaveAutoGeneration */
200 /* - OutputBuffer */
201 /* - OutputMode */
202 if (DAC_InitStruct->WaveAutoGeneration != LL_DAC_WAVE_AUTO_GENERATION_NONE)
203 {
204 MODIFY_REG(DACx->CR,
205 (DAC_CR_TSEL1
206 | DAC_CR_WAVE1
207 | DAC_CR_MAMP1
208 | DAC_CR_BOFF1
209 ) << (DAC_Channel & DAC_CR_CHX_BITOFFSET_MASK)
210 ,
211 (DAC_InitStruct->TriggerSource
212 | DAC_InitStruct->WaveAutoGeneration
213 | DAC_InitStruct->WaveAutoGenerationConfig
214 | DAC_InitStruct->OutputBuffer
215 ) << (DAC_Channel & DAC_CR_CHX_BITOFFSET_MASK)
216 );
217 }
218 else
219 {
220 MODIFY_REG(DACx->CR,
221 (DAC_CR_TSEL1
222 | DAC_CR_WAVE1
223 | DAC_CR_BOFF1
224 ) << (DAC_Channel & DAC_CR_CHX_BITOFFSET_MASK)
225 ,
226 (DAC_InitStruct->TriggerSource
227 | LL_DAC_WAVE_AUTO_GENERATION_NONE
228 | DAC_InitStruct->OutputBuffer
229 ) << (DAC_Channel & DAC_CR_CHX_BITOFFSET_MASK)
230 );
231 }
232 }
233 else
234 {
235 /* Initialization error: DAC instance is not disabled. */
236 status = ERROR;
237 }
238 return status;
239 }
240
241 /**
242 * @brief Set each @ref LL_DAC_InitTypeDef field to default value.
243 * @param DAC_InitStruct pointer to a @ref LL_DAC_InitTypeDef structure
244 * whose fields will be set to default values.
245 * @retval None
246 */
LL_DAC_StructInit(LL_DAC_InitTypeDef * DAC_InitStruct)247 void LL_DAC_StructInit(LL_DAC_InitTypeDef *DAC_InitStruct)
248 {
249 /* Set DAC_InitStruct fields to default values */
250 DAC_InitStruct->TriggerSource = LL_DAC_TRIG_SOFTWARE;
251 DAC_InitStruct->WaveAutoGeneration = LL_DAC_WAVE_AUTO_GENERATION_NONE;
252 /* Note: Parameter discarded if wave auto generation is disabled, */
253 /* set anyway to its default value. */
254 DAC_InitStruct->WaveAutoGenerationConfig = LL_DAC_NOISE_LFSR_UNMASK_BIT0;
255 DAC_InitStruct->OutputBuffer = LL_DAC_OUTPUT_BUFFER_ENABLE;
256 }
257
258 /**
259 * @}
260 */
261
262 /**
263 * @}
264 */
265
266 /**
267 * @}
268 */
269
270 #endif /* DAC */
271
272 /**
273 * @}
274 */
275
276 #endif /* USE_FULL_LL_DRIVER */
277
