1 /**
2 ******************************************************************************
3 * @file stm32l0xx_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 "stm32l0xx_ll_dac.h"
22 #include "stm32l0xx_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
29
30 /** @addtogroup STM32L0xx_LL_Driver
31 * @{
32 */
33
34 #if defined (DAC1)
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
49 #if defined(DAC_CHANNEL2_SUPPORT)
50 #define IS_LL_DAC_CHANNEL(__DACX__, __DAC_CHANNEL__) \
51 ( \
52 ((__DAC_CHANNEL__) == LL_DAC_CHANNEL_1) \
53 || ((__DAC_CHANNEL__) == LL_DAC_CHANNEL_2) \
54 )
55 #else
56 #define IS_LL_DAC_CHANNEL(__DACX__, __DAC_CHANNEL__) \
57 ( \
58 ((__DAC_CHANNEL__) == LL_DAC_CHANNEL_1) \
59 )
60 #endif /* DAC_CHANNEL2_SUPPORT */
61
62 #define IS_LL_DAC_TRIGGER_SOURCE(__TRIGGER_SOURCE__) \
63 ( ((__TRIGGER_SOURCE__) == LL_DAC_TRIG_SOFTWARE) \
64 || ((__TRIGGER_SOURCE__) == LL_DAC_TRIG_EXT_TIM2_TRGO) \
65 || ((__TRIGGER_SOURCE__) == LL_DAC_TRIG_EXT_TIM3_TRGO) \
66 || ((__TRIGGER_SOURCE__) == LL_DAC_TRIG_EXT_TIM3_CH3) \
67 || ((__TRIGGER_SOURCE__) == LL_DAC_TRIG_EXT_TIM6_TRGO) \
68 || ((__TRIGGER_SOURCE__) == LL_DAC_TRIG_EXT_TIM7_TRGO) \
69 || ((__TRIGGER_SOURCE__) == LL_DAC_TRIG_EXT_TIM21_TRGO) \
70 || ((__TRIGGER_SOURCE__) == LL_DAC_TRIG_EXT_EXTI_LINE9) \
71 )
72
73 #define IS_LL_DAC_WAVE_AUTO_GENER_MODE(__WAVE_AUTO_GENERATION_MODE__) \
74 ( ((__WAVE_AUTO_GENERATION_MODE__) == LL_DAC_WAVE_AUTO_GENERATION_NONE) \
75 || ((__WAVE_AUTO_GENERATION_MODE__) == LL_DAC_WAVE_AUTO_GENERATION_NOISE) \
76 || ((__WAVE_AUTO_GENERATION_MODE__) == LL_DAC_WAVE_AUTO_GENERATION_TRIANGLE) \
77 )
78
79 #define IS_LL_DAC_WAVE_AUTO_GENER_CONFIG(__WAVE_AUTO_GENERATION_CONFIG__) \
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 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_TRIANGLE_AMPLITUDE_1) \
93 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_TRIANGLE_AMPLITUDE_3) \
94 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_TRIANGLE_AMPLITUDE_7) \
95 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_TRIANGLE_AMPLITUDE_15) \
96 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_TRIANGLE_AMPLITUDE_31) \
97 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_TRIANGLE_AMPLITUDE_63) \
98 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_TRIANGLE_AMPLITUDE_127) \
99 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_TRIANGLE_AMPLITUDE_255) \
100 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_TRIANGLE_AMPLITUDE_511) \
101 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_TRIANGLE_AMPLITUDE_1023) \
102 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_TRIANGLE_AMPLITUDE_2047) \
103 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_TRIANGLE_AMPLITUDE_4095) \
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(DAC_TypeDef * DACx)135 ErrorStatus LL_DAC_DeInit(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 instance.
151 * @note The setting of these parameters by function @ref LL_DAC_Init()
152 * is conditioned to DAC state:
153 * DAC instance must be disabled.
154 * @param DACx DAC instance
155 * @param DAC_Channel This parameter can be one of the following values:
156 * @arg @ref LL_DAC_CHANNEL_1
157 * @arg @ref LL_DAC_CHANNEL_2 (1)
158 *
159 * (1) On this STM32 series, parameter not available on all devices.
160 * Refer to device datasheet for channels availability.
161 * @param DAC_InitStruct Pointer to a @ref LL_DAC_InitTypeDef structure
162 * @retval An ErrorStatus enumeration value:
163 * - SUCCESS: DAC registers are initialized
164 * - ERROR: DAC registers are not initialized
165 */
LL_DAC_Init(DAC_TypeDef * DACx,uint32_t DAC_Channel,LL_DAC_InitTypeDef * DAC_InitStruct)166 ErrorStatus LL_DAC_Init(DAC_TypeDef *DACx, uint32_t DAC_Channel, LL_DAC_InitTypeDef *DAC_InitStruct)
167 {
168 ErrorStatus status = SUCCESS;
169
170 /* Check the parameters */
171 assert_param(IS_DAC_ALL_INSTANCE(DACx));
172 assert_param(IS_LL_DAC_CHANNEL(DACx, DAC_Channel));
173 assert_param(IS_LL_DAC_TRIGGER_SOURCE(DAC_InitStruct->TriggerSource));
174 assert_param(IS_LL_DAC_OUTPUT_BUFFER(DAC_InitStruct->OutputBuffer));
175 assert_param(IS_LL_DAC_WAVE_AUTO_GENER_MODE(DAC_InitStruct->WaveAutoGeneration));
176 if (DAC_InitStruct->WaveAutoGeneration != LL_DAC_WAVE_AUTO_GENERATION_NONE)
177 {
178 assert_param(IS_LL_DAC_WAVE_AUTO_GENER_CONFIG(DAC_InitStruct->WaveAutoGenerationConfig));
179 }
180
181 /* Note: Hardware constraint (refer to description of this function) */
182 /* DAC instance must be disabled. */
183 if(LL_DAC_IsEnabled(DACx, DAC_Channel) == 0U)
184 {
185 /* Configuration of DAC channel: */
186 /* - TriggerSource */
187 /* - WaveAutoGeneration */
188 /* - OutputBuffer */
189 if (DAC_InitStruct->WaveAutoGeneration != LL_DAC_WAVE_AUTO_GENERATION_NONE)
190 {
191 MODIFY_REG(DACx->CR,
192 ( DAC_CR_TSEL1
193 | DAC_CR_WAVE1
194 | DAC_CR_MAMP1
195 | DAC_CR_BOFF1
196 ) << (DAC_Channel & DAC_CR_CHX_BITOFFSET_MASK)
197 ,
198 ( DAC_InitStruct->TriggerSource
199 | DAC_InitStruct->WaveAutoGeneration
200 | DAC_InitStruct->WaveAutoGenerationConfig
201 | DAC_InitStruct->OutputBuffer
202 ) << (DAC_Channel & DAC_CR_CHX_BITOFFSET_MASK)
203 );
204 }
205 else
206 {
207 MODIFY_REG(DACx->CR,
208 ( DAC_CR_TSEL1
209 | DAC_CR_WAVE1
210 | DAC_CR_BOFF1
211 ) << (DAC_Channel & DAC_CR_CHX_BITOFFSET_MASK)
212 ,
213 ( DAC_InitStruct->TriggerSource
214 | LL_DAC_WAVE_AUTO_GENERATION_NONE
215 | DAC_InitStruct->OutputBuffer
216 ) << (DAC_Channel & DAC_CR_CHX_BITOFFSET_MASK)
217 );
218 }
219 }
220 else
221 {
222 /* Initialization error: DAC instance is not disabled. */
223 status = ERROR;
224 }
225 return status;
226 }
227
228 /**
229 * @brief Set each @ref LL_DAC_InitTypeDef field to default value.
230 * @param DAC_InitStruct pointer to a @ref LL_DAC_InitTypeDef structure
231 * whose fields will be set to default values.
232 * @retval None
233 */
LL_DAC_StructInit(LL_DAC_InitTypeDef * DAC_InitStruct)234 void LL_DAC_StructInit(LL_DAC_InitTypeDef *DAC_InitStruct)
235 {
236 /* Set DAC_InitStruct fields to default values */
237 DAC_InitStruct->TriggerSource = LL_DAC_TRIG_SOFTWARE;
238 DAC_InitStruct->WaveAutoGeneration = LL_DAC_WAVE_AUTO_GENERATION_NONE;
239 /* Note: Parameter discarded if wave auto generation is disabled, */
240 /* set anyway to its default value. */
241 DAC_InitStruct->WaveAutoGenerationConfig = LL_DAC_NOISE_LFSR_UNMASK_BIT0;
242 DAC_InitStruct->OutputBuffer = LL_DAC_OUTPUT_BUFFER_ENABLE;
243 }
244
245 /**
246 * @}
247 */
248
249 /**
250 * @}
251 */
252
253 /**
254 * @}
255 */
256
257 #endif /* DAC1 */
258
259 /**
260 * @}
261 */
262
263 #endif /* USE_FULL_LL_DRIVER */
264
265
