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