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 ( \
51 ((__DAC_CHANNEL__) == LL_DAC_CHANNEL_1) \
52 || ((__DAC_CHANNEL__) == LL_DAC_CHANNEL_2) \
53 )
54 #else
55 #define IS_LL_DAC_CHANNEL(__DACX__, __DAC_CHANNEL__) \
56 ( \
57 ((__DAC_CHANNEL__) == LL_DAC_CHANNEL_1) \
58 )
59 #endif /* DAC_CHANNEL2_SUPPORT */
60
61 #define IS_LL_DAC_TRIGGER_SOURCE(__TRIGGER_SOURCE__) \
62 ( ((__TRIGGER_SOURCE__) == LL_DAC_TRIG_SOFTWARE) \
63 || ((__TRIGGER_SOURCE__) == LL_DAC_TRIG_EXT_TIM2_TRGO) \
64 || ((__TRIGGER_SOURCE__) == LL_DAC_TRIG_EXT_TIM4_TRGO) \
65 || ((__TRIGGER_SOURCE__) == LL_DAC_TRIG_EXT_TIM5_TRGO) \
66 || ((__TRIGGER_SOURCE__) == LL_DAC_TRIG_EXT_TIM6_TRGO) \
67 || ((__TRIGGER_SOURCE__) == LL_DAC_TRIG_EXT_TIM7_TRGO) \
68 || ((__TRIGGER_SOURCE__) == LL_DAC_TRIG_EXT_TIM8_TRGO) \
69 || ((__TRIGGER_SOURCE__) == LL_DAC_TRIG_EXT_EXTI_LINE9) \
70 )
71
72 #define IS_LL_DAC_WAVE_AUTO_GENER_MODE(__WAVE_AUTO_GENERATION_MODE__) \
73 ( ((__WAVE_AUTO_GENERATION_MODE__) == LL_DAC_WAVE_AUTO_GENERATION_NONE) \
74 || ((__WAVE_AUTO_GENERATION_MODE__) == LL_DAC_WAVE_AUTO_GENERATION_NOISE) \
75 || ((__WAVE_AUTO_GENERATION_MODE__) == LL_DAC_WAVE_AUTO_GENERATION_TRIANGLE) \
76 )
77
78 #define IS_LL_DAC_WAVE_AUTO_GENER_CONFIG(__WAVE_AUTO_GENERATION_MODE__, __WAVE_AUTO_GENERATION_CONFIG__) \
79 ( (((__WAVE_AUTO_GENERATION_MODE__) == LL_DAC_WAVE_AUTO_GENERATION_NOISE) \
80 && ( ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_NOISE_LFSR_UNMASK_BIT0) \
81 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_NOISE_LFSR_UNMASK_BITS1_0) \
82 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_NOISE_LFSR_UNMASK_BITS2_0) \
83 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_NOISE_LFSR_UNMASK_BITS3_0) \
84 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_NOISE_LFSR_UNMASK_BITS4_0) \
85 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_NOISE_LFSR_UNMASK_BITS5_0) \
86 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_NOISE_LFSR_UNMASK_BITS6_0) \
87 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_NOISE_LFSR_UNMASK_BITS7_0) \
88 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_NOISE_LFSR_UNMASK_BITS8_0) \
89 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_NOISE_LFSR_UNMASK_BITS9_0) \
90 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_NOISE_LFSR_UNMASK_BITS10_0) \
91 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_NOISE_LFSR_UNMASK_BITS11_0)) \
92 ) \
93 ||(((__WAVE_AUTO_GENERATION_MODE__) == LL_DAC_WAVE_AUTO_GENERATION_TRIANGLE) \
94 && ( ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_TRIANGLE_AMPLITUDE_1) \
95 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_TRIANGLE_AMPLITUDE_3) \
96 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_TRIANGLE_AMPLITUDE_7) \
97 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_TRIANGLE_AMPLITUDE_15) \
98 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_TRIANGLE_AMPLITUDE_31) \
99 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_TRIANGLE_AMPLITUDE_63) \
100 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_TRIANGLE_AMPLITUDE_127) \
101 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_TRIANGLE_AMPLITUDE_255) \
102 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_TRIANGLE_AMPLITUDE_511) \
103 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_TRIANGLE_AMPLITUDE_1023) \
104 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_TRIANGLE_AMPLITUDE_2047) \
105 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_TRIANGLE_AMPLITUDE_4095)) \
106 ) \
107 )
108
109 #define IS_LL_DAC_OUTPUT_BUFFER(__OUTPUT_BUFFER__) \
110 ( ((__OUTPUT_BUFFER__) == LL_DAC_OUTPUT_BUFFER_ENABLE) \
111 || ((__OUTPUT_BUFFER__) == LL_DAC_OUTPUT_BUFFER_DISABLE) \
112 )
113
114 /**
115 * @}
116 */
117
118
119 /* Private function prototypes -----------------------------------------------*/
120
121 /* Exported functions --------------------------------------------------------*/
122 /** @addtogroup DAC_LL_Exported_Functions
123 * @{
124 */
125
126 /** @addtogroup DAC_LL_EF_Init
127 * @{
128 */
129
130 /**
131 * @brief De-initialize registers of the selected DAC instance
132 * to their default reset values.
133 * @param DACx DAC instance
134 * @retval An ErrorStatus enumeration value:
135 * - SUCCESS: DAC registers are de-initialized
136 * - ERROR: not applicable
137 */
LL_DAC_DeInit(DAC_TypeDef * DACx)138 ErrorStatus LL_DAC_DeInit(DAC_TypeDef *DACx)
139 {
140 /* Check the parameters */
141 assert_param(IS_DAC_ALL_INSTANCE(DACx));
142
143 /* Force reset of DAC clock */
144 LL_APB1_GRP1_ForceReset(LL_APB1_GRP1_PERIPH_DAC1);
145
146 /* Release reset of DAC clock */
147 LL_APB1_GRP1_ReleaseReset(LL_APB1_GRP1_PERIPH_DAC1);
148
149 return SUCCESS;
150 }
151
152 /**
153 * @brief Initialize some features of DAC channel.
154 * @note @ref LL_DAC_Init() aims to ease basic configuration of a DAC channel.
155 * Leaving it ready to be enabled and output:
156 * a level by calling one of
157 * @ref LL_DAC_ConvertData12RightAligned
158 * @ref LL_DAC_ConvertData12LeftAligned
159 * @ref LL_DAC_ConvertData8RightAligned
160 * or one of the supported autogenerated wave.
161 * @note This function allows configuration of:
162 * - Output mode
163 * - Trigger
164 * - Wave generation
165 * @note The setting of these parameters by function @ref LL_DAC_Init()
166 * is conditioned to DAC state:
167 * DAC channel must be disabled.
168 * @param DACx DAC instance
169 * @param DAC_Channel This parameter can be one of the following values:
170 * @arg @ref LL_DAC_CHANNEL_1
171 * @arg @ref LL_DAC_CHANNEL_2 (1)
172 *
173 * (1) On this STM32 serie, parameter not available on all devices.
174 * Refer to device datasheet for channels availability.
175 * @param DAC_InitStruct Pointer to a @ref LL_DAC_InitTypeDef structure
176 * @retval An ErrorStatus enumeration value:
177 * - SUCCESS: DAC registers are initialized
178 * - ERROR: DAC registers are not initialized
179 */
LL_DAC_Init(DAC_TypeDef * DACx,uint32_t DAC_Channel,LL_DAC_InitTypeDef * DAC_InitStruct)180 ErrorStatus LL_DAC_Init(DAC_TypeDef *DACx, uint32_t DAC_Channel, LL_DAC_InitTypeDef *DAC_InitStruct)
181 {
182 ErrorStatus status = SUCCESS;
183
184 /* Check the parameters */
185 assert_param(IS_DAC_ALL_INSTANCE(DACx));
186 assert_param(IS_LL_DAC_CHANNEL(DACx, DAC_Channel));
187 assert_param(IS_LL_DAC_TRIGGER_SOURCE(DAC_InitStruct->TriggerSource));
188 assert_param(IS_LL_DAC_OUTPUT_BUFFER(DAC_InitStruct->OutputBuffer));
189 assert_param(IS_LL_DAC_WAVE_AUTO_GENER_MODE(DAC_InitStruct->WaveAutoGeneration));
190 if (DAC_InitStruct->WaveAutoGeneration != LL_DAC_WAVE_AUTO_GENERATION_NONE)
191 {
192 assert_param(IS_LL_DAC_WAVE_AUTO_GENER_CONFIG(DAC_InitStruct->WaveAutoGeneration,
193 DAC_InitStruct->WaveAutoGenerationConfig));
194 }
195
196 /* Note: Hardware constraint (refer to description of this function) */
197 /* DAC instance must be disabled. */
198 if (LL_DAC_IsEnabled(DACx, DAC_Channel) == 0UL)
199 {
200 /* Configuration of DAC channel: */
201 /* - TriggerSource */
202 /* - WaveAutoGeneration */
203 /* - OutputBuffer */
204 /* - OutputMode */
205 if (DAC_InitStruct->WaveAutoGeneration != LL_DAC_WAVE_AUTO_GENERATION_NONE)
206 {
207 MODIFY_REG(DACx->CR,
208 (DAC_CR_TSEL1
209 | DAC_CR_WAVE1
210 | DAC_CR_MAMP1
211 | DAC_CR_BOFF1
212 ) << (DAC_Channel & DAC_CR_CHX_BITOFFSET_MASK)
213 ,
214 (DAC_InitStruct->TriggerSource
215 | DAC_InitStruct->WaveAutoGeneration
216 | DAC_InitStruct->WaveAutoGenerationConfig
217 | DAC_InitStruct->OutputBuffer
218 ) << (DAC_Channel & DAC_CR_CHX_BITOFFSET_MASK)
219 );
220 }
221 else
222 {
223 MODIFY_REG(DACx->CR,
224 (DAC_CR_TSEL1
225 | DAC_CR_WAVE1
226 | DAC_CR_BOFF1
227 ) << (DAC_Channel & DAC_CR_CHX_BITOFFSET_MASK)
228 ,
229 (DAC_InitStruct->TriggerSource
230 | LL_DAC_WAVE_AUTO_GENERATION_NONE
231 | DAC_InitStruct->OutputBuffer
232 ) << (DAC_Channel & DAC_CR_CHX_BITOFFSET_MASK)
233 );
234 }
235 }
236 else
237 {
238 /* Initialization error: DAC instance is not disabled. */
239 status = ERROR;
240 }
241 return status;
242 }
243
244 /**
245 * @brief Set each @ref LL_DAC_InitTypeDef field to default value.
246 * @param DAC_InitStruct pointer to a @ref LL_DAC_InitTypeDef structure
247 * whose fields will be set to default values.
248 * @retval None
249 */
LL_DAC_StructInit(LL_DAC_InitTypeDef * DAC_InitStruct)250 void LL_DAC_StructInit(LL_DAC_InitTypeDef *DAC_InitStruct)
251 {
252 /* Set DAC_InitStruct fields to default values */
253 DAC_InitStruct->TriggerSource = LL_DAC_TRIG_SOFTWARE;
254 DAC_InitStruct->WaveAutoGeneration = LL_DAC_WAVE_AUTO_GENERATION_NONE;
255 /* Note: Parameter discarded if wave auto generation is disabled, */
256 /* set anyway to its default value. */
257 DAC_InitStruct->WaveAutoGenerationConfig = LL_DAC_NOISE_LFSR_UNMASK_BIT0;
258 DAC_InitStruct->OutputBuffer = LL_DAC_OUTPUT_BUFFER_ENABLE;
259 }
260
261 /**
262 * @}
263 */
264
265 /**
266 * @}
267 */
268
269 /**
270 * @}
271 */
272
273 #endif /* DAC */
274
275 /**
276 * @}
277 */
278
279 #endif /* USE_FULL_LL_DRIVER */
280
281
