1 /**
2 ******************************************************************************
3 * @file stm32l1xx_ll_dac.c
4 * @author MCD Application Team
5 * @brief DAC LL module driver
6 ******************************************************************************
7 * @attention
8 *
9 * <h2><center>© Copyright (c) 2016 STMicroelectronics.
10 * All rights reserved.</center></h2>
11 *
12 * This software component is licensed by ST under BSD 3-Clause license,
13 * the "License"; You may not use this file except in compliance with the
14 * License. You may obtain a copy of the License at:
15 * opensource.org/licenses/BSD-3-Clause
16 *
17 ******************************************************************************
18 */
19 #if defined(USE_FULL_LL_DRIVER)
20
21 /* Includes ------------------------------------------------------------------*/
22 #include "stm32l1xx_ll_dac.h"
23 #include "stm32l1xx_ll_bus.h"
24
25 #ifdef USE_FULL_ASSERT
26 #include "stm32_assert.h"
27 #else
28 #define assert_param(expr) ((void)0U)
29 #endif /* USE_FULL_ASSERT */
30
31 /** @addtogroup STM32L1xx_LL_Driver
32 * @{
33 */
34
35 #if defined(DAC1)
36
37 /** @addtogroup DAC_LL DAC
38 * @{
39 */
40
41 /* Private types -------------------------------------------------------------*/
42 /* Private variables ---------------------------------------------------------*/
43 /* Private constants ---------------------------------------------------------*/
44 /* Private macros ------------------------------------------------------------*/
45
46 /** @addtogroup DAC_LL_Private_Macros
47 * @{
48 */
49 #define IS_LL_DAC_CHANNEL(__DAC_CHANNEL__) \
50 ( ((__DAC_CHANNEL__) == LL_DAC_CHANNEL_1) \
51 || ((__DAC_CHANNEL__) == LL_DAC_CHANNEL_2) \
52 )
53
54 #define IS_LL_DAC_TRIGGER_SOURCE(__TRIGGER_SOURCE__) \
55 ( ((__TRIGGER_SOURCE__) == LL_DAC_TRIG_SOFTWARE) \
56 || ((__TRIGGER_SOURCE__) == LL_DAC_TRIG_EXT_TIM2_TRGO) \
57 || ((__TRIGGER_SOURCE__) == LL_DAC_TRIG_EXT_TIM4_TRGO) \
58 || ((__TRIGGER_SOURCE__) == LL_DAC_TRIG_EXT_TIM6_TRGO) \
59 || ((__TRIGGER_SOURCE__) == LL_DAC_TRIG_EXT_TIM7_TRGO) \
60 || ((__TRIGGER_SOURCE__) == LL_DAC_TRIG_EXT_TIM9_TRGO) \
61 || ((__TRIGGER_SOURCE__) == LL_DAC_TRIG_EXT_EXTI_LINE9) \
62 )
63
64 #define IS_LL_DAC_WAVE_AUTO_GENER_MODE(__WAVE_AUTO_GENERATION_MODE__) \
65 ( ((__WAVE_AUTO_GENERATION_MODE__) == LL_DAC_WAVE_AUTO_GENERATION_NONE) \
66 || ((__WAVE_AUTO_GENERATION_MODE__) == LL_DAC_WAVE_AUTO_GENERATION_NOISE) \
67 || ((__WAVE_AUTO_GENERATION_MODE__) == LL_DAC_WAVE_AUTO_GENERATION_TRIANGLE) \
68 )
69
70 #define IS_LL_DAC_WAVE_AUTO_GENER_CONFIG(__WAVE_AUTO_GENERATION_MODE__, __WAVE_AUTO_GENERATION_CONFIG__) \
71 ( (((__WAVE_AUTO_GENERATION_MODE__) == LL_DAC_WAVE_AUTO_GENERATION_NOISE) \
72 && ( ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_NOISE_LFSR_UNMASK_BIT0) \
73 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_NOISE_LFSR_UNMASK_BITS1_0) \
74 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_NOISE_LFSR_UNMASK_BITS2_0) \
75 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_NOISE_LFSR_UNMASK_BITS3_0) \
76 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_NOISE_LFSR_UNMASK_BITS4_0) \
77 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_NOISE_LFSR_UNMASK_BITS5_0) \
78 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_NOISE_LFSR_UNMASK_BITS6_0) \
79 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_NOISE_LFSR_UNMASK_BITS7_0) \
80 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_NOISE_LFSR_UNMASK_BITS8_0) \
81 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_NOISE_LFSR_UNMASK_BITS9_0) \
82 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_NOISE_LFSR_UNMASK_BITS10_0) \
83 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_NOISE_LFSR_UNMASK_BITS11_0)) \
84 ) \
85 ||(((__WAVE_AUTO_GENERATION_MODE__) == LL_DAC_WAVE_AUTO_GENERATION_TRIANGLE) \
86 && ( ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_TRIANGLE_AMPLITUDE_1) \
87 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_TRIANGLE_AMPLITUDE_3) \
88 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_TRIANGLE_AMPLITUDE_7) \
89 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_TRIANGLE_AMPLITUDE_15) \
90 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_TRIANGLE_AMPLITUDE_31) \
91 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_TRIANGLE_AMPLITUDE_63) \
92 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_TRIANGLE_AMPLITUDE_127) \
93 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_TRIANGLE_AMPLITUDE_255) \
94 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_TRIANGLE_AMPLITUDE_511) \
95 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_TRIANGLE_AMPLITUDE_1023) \
96 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_TRIANGLE_AMPLITUDE_2047) \
97 || ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_TRIANGLE_AMPLITUDE_4095)) \
98 ) \
99 )
100
101 #define IS_LL_DAC_OUTPUT_BUFFER(__OUTPUT_BUFFER__) \
102 ( ((__OUTPUT_BUFFER__) == LL_DAC_OUTPUT_BUFFER_ENABLE) \
103 || ((__OUTPUT_BUFFER__) == LL_DAC_OUTPUT_BUFFER_DISABLE) \
104 )
105
106 /**
107 * @}
108 */
109
110
111 /* Private function prototypes -----------------------------------------------*/
112
113 /* Exported functions --------------------------------------------------------*/
114 /** @addtogroup DAC_LL_Exported_Functions
115 * @{
116 */
117
118 /** @addtogroup DAC_LL_EF_Init
119 * @{
120 */
121
122 /**
123 * @brief De-initialize registers of the selected DAC instance
124 * to their default reset values.
125 * @param DACx DAC instance
126 * @retval An ErrorStatus enumeration value:
127 * - SUCCESS: DAC registers are de-initialized
128 * - ERROR: not applicable
129 */
LL_DAC_DeInit(DAC_TypeDef * DACx)130 ErrorStatus LL_DAC_DeInit(DAC_TypeDef *DACx)
131 {
132 /* Check the parameters */
133 assert_param(IS_DAC_ALL_INSTANCE(DACx));
134
135 /* Force reset of DAC clock */
136 LL_APB1_GRP1_ForceReset(LL_APB1_GRP1_PERIPH_DAC1);
137
138 /* Release reset of DAC clock */
139 LL_APB1_GRP1_ReleaseReset(LL_APB1_GRP1_PERIPH_DAC1);
140
141 return SUCCESS;
142 }
143
144 /**
145 * @brief Initialize some features of DAC channel.
146 * @note @ref LL_DAC_Init() aims to ease basic configuration of a DAC channel.
147 * Leaving it ready to be enabled and output:
148 * a level by calling one of
149 * @ref LL_DAC_ConvertData12RightAligned
150 * @ref LL_DAC_ConvertData12LeftAligned
151 * @ref LL_DAC_ConvertData8RightAligned
152 * or one of the supported autogenerated wave.
153 * @note This function allows configuration of:
154 * - Output mode
155 * - Trigger
156 * - Wave generation
157 * @note The setting of these parameters by function @ref LL_DAC_Init()
158 * is conditioned to DAC state:
159 * DAC channel must be disabled.
160 * @param DACx DAC instance
161 * @param DAC_Channel This parameter can be one of the following values:
162 * @arg @ref LL_DAC_CHANNEL_1
163 * @arg @ref LL_DAC_CHANNEL_2
164 * @param DAC_InitStruct Pointer to a @ref LL_DAC_InitTypeDef structure
165 * @retval An ErrorStatus enumeration value:
166 * - SUCCESS: DAC registers are initialized
167 * - ERROR: DAC registers are not initialized
168 */
LL_DAC_Init(DAC_TypeDef * DACx,uint32_t DAC_Channel,LL_DAC_InitTypeDef * DAC_InitStruct)169 ErrorStatus LL_DAC_Init(DAC_TypeDef *DACx, uint32_t DAC_Channel, LL_DAC_InitTypeDef *DAC_InitStruct)
170 {
171 ErrorStatus status = SUCCESS;
172
173 /* Check the parameters */
174 assert_param(IS_DAC_ALL_INSTANCE(DACx));
175 assert_param(IS_LL_DAC_CHANNEL(DAC_Channel));
176 assert_param(IS_LL_DAC_TRIGGER_SOURCE(DAC_InitStruct->TriggerSource));
177 assert_param(IS_LL_DAC_OUTPUT_BUFFER(DAC_InitStruct->OutputBuffer));
178 assert_param(IS_LL_DAC_WAVE_AUTO_GENER_MODE(DAC_InitStruct->WaveAutoGeneration));
179 if (DAC_InitStruct->WaveAutoGeneration != LL_DAC_WAVE_AUTO_GENERATION_NONE)
180 {
181 assert_param(IS_LL_DAC_WAVE_AUTO_GENER_CONFIG(DAC_InitStruct->WaveAutoGeneration,
182 DAC_InitStruct->WaveAutoGenerationConfig));
183 }
184
185 /* Note: Hardware constraint (refer to description of this function) */
186 /* DAC instance must be disabled. */
187 if (LL_DAC_IsEnabled(DACx, DAC_Channel) == 0UL)
188 {
189 /* Configuration of DAC channel: */
190 /* - TriggerSource */
191 /* - WaveAutoGeneration */
192 /* - OutputBuffer */
193 /* - OutputMode */
194 if (DAC_InitStruct->WaveAutoGeneration != LL_DAC_WAVE_AUTO_GENERATION_NONE)
195 {
196 MODIFY_REG(DACx->CR,
197 (DAC_CR_TSEL1
198 | DAC_CR_WAVE1
199 | DAC_CR_MAMP1
200 | DAC_CR_BOFF1
201 ) << (DAC_Channel & DAC_CR_CHX_BITOFFSET_MASK)
202 ,
203 (DAC_InitStruct->TriggerSource
204 | DAC_InitStruct->WaveAutoGeneration
205 | DAC_InitStruct->WaveAutoGenerationConfig
206 | DAC_InitStruct->OutputBuffer
207 ) << (DAC_Channel & DAC_CR_CHX_BITOFFSET_MASK)
208 );
209 }
210 else
211 {
212 MODIFY_REG(DACx->CR,
213 (DAC_CR_TSEL1
214 | DAC_CR_WAVE1
215 | DAC_CR_BOFF1
216 ) << (DAC_Channel & DAC_CR_CHX_BITOFFSET_MASK)
217 ,
218 (DAC_InitStruct->TriggerSource
219 | LL_DAC_WAVE_AUTO_GENERATION_NONE
220 | DAC_InitStruct->OutputBuffer
221 ) << (DAC_Channel & DAC_CR_CHX_BITOFFSET_MASK)
222 );
223 }
224 }
225 else
226 {
227 /* Initialization error: DAC instance is not disabled. */
228 status = ERROR;
229 }
230 return status;
231 }
232
233 /**
234 * @brief Set each @ref LL_DAC_InitTypeDef field to default value.
235 * @param DAC_InitStruct pointer to a @ref LL_DAC_InitTypeDef structure
236 * whose fields will be set to default values.
237 * @retval None
238 */
LL_DAC_StructInit(LL_DAC_InitTypeDef * DAC_InitStruct)239 void LL_DAC_StructInit(LL_DAC_InitTypeDef *DAC_InitStruct)
240 {
241 /* Set DAC_InitStruct fields to default values */
242 DAC_InitStruct->TriggerSource = LL_DAC_TRIG_SOFTWARE;
243 DAC_InitStruct->WaveAutoGeneration = LL_DAC_WAVE_AUTO_GENERATION_NONE;
244 /* Note: Parameter discarded if wave auto generation is disabled, */
245 /* set anyway to its default value. */
246 DAC_InitStruct->WaveAutoGenerationConfig = LL_DAC_NOISE_LFSR_UNMASK_BIT0;
247 DAC_InitStruct->OutputBuffer = LL_DAC_OUTPUT_BUFFER_ENABLE;
248 }
249
250 /**
251 * @}
252 */
253
254 /**
255 * @}
256 */
257
258 /**
259 * @}
260 */
261
262 #endif /* DAC1 */
263
264 /**
265 * @}
266 */
267
268 #endif /* USE_FULL_LL_DRIVER */
269
270 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
271
