1 | /**
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2 | ******************************************************************************
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3 | * @file stm32f4xx_ll_dma.c
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4 | * @author MCD Application Team
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5 | * @brief DMA 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) 2017 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 |
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21 | /* Includes ------------------------------------------------------------------*/
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22 | #include "stm32f4xx_ll_dma.h"
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23 | #include "stm32f4xx_ll_bus.h"
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24 | #ifdef USE_FULL_ASSERT
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25 | #include "stm32_assert.h"
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26 | #else
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27 | #define assert_param(expr) ((void)0U)
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28 | #endif
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29 |
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30 | /** @addtogroup STM32F4xx_LL_Driver
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31 | * @{
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32 | */
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33 |
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34 | #if defined (DMA1) || defined (DMA2)
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35 |
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36 | /** @defgroup DMA_LL DMA
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37 | * @{
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38 | */
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39 |
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40 | /* Private types -------------------------------------------------------------*/
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41 | /* Private variables ---------------------------------------------------------*/
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42 | /* Private constants ---------------------------------------------------------*/
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43 | /* Private macros ------------------------------------------------------------*/
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44 | /** @addtogroup DMA_LL_Private_Macros
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45 | * @{
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46 | */
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47 | #define IS_LL_DMA_DIRECTION(__VALUE__) (((__VALUE__) == LL_DMA_DIRECTION_PERIPH_TO_MEMORY) || \
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48 | ((__VALUE__) == LL_DMA_DIRECTION_MEMORY_TO_PERIPH) || \
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49 | ((__VALUE__) == LL_DMA_DIRECTION_MEMORY_TO_MEMORY))
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50 |
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51 | #define IS_LL_DMA_MODE(__VALUE__) (((__VALUE__) == LL_DMA_MODE_NORMAL) || \
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52 | ((__VALUE__) == LL_DMA_MODE_CIRCULAR) || \
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53 | ((__VALUE__) == LL_DMA_MODE_PFCTRL))
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54 |
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55 | #define IS_LL_DMA_PERIPHINCMODE(__VALUE__) (((__VALUE__) == LL_DMA_PERIPH_INCREMENT) || \
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56 | ((__VALUE__) == LL_DMA_PERIPH_NOINCREMENT))
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57 |
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58 | #define IS_LL_DMA_MEMORYINCMODE(__VALUE__) (((__VALUE__) == LL_DMA_MEMORY_INCREMENT) || \
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59 | ((__VALUE__) == LL_DMA_MEMORY_NOINCREMENT))
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60 |
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61 | #define IS_LL_DMA_PERIPHDATASIZE(__VALUE__) (((__VALUE__) == LL_DMA_PDATAALIGN_BYTE) || \
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62 | ((__VALUE__) == LL_DMA_PDATAALIGN_HALFWORD) || \
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63 | ((__VALUE__) == LL_DMA_PDATAALIGN_WORD))
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64 |
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65 | #define IS_LL_DMA_MEMORYDATASIZE(__VALUE__) (((__VALUE__) == LL_DMA_MDATAALIGN_BYTE) || \
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66 | ((__VALUE__) == LL_DMA_MDATAALIGN_HALFWORD) || \
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67 | ((__VALUE__) == LL_DMA_MDATAALIGN_WORD))
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68 |
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69 | #define IS_LL_DMA_NBDATA(__VALUE__) ((__VALUE__) <= 0x0000FFFFU)
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70 |
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71 | #define IS_LL_DMA_CHANNEL(__VALUE__) (((__VALUE__) == LL_DMA_CHANNEL_0) || \
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72 | ((__VALUE__) == LL_DMA_CHANNEL_1) || \
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73 | ((__VALUE__) == LL_DMA_CHANNEL_2) || \
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74 | ((__VALUE__) == LL_DMA_CHANNEL_3) || \
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75 | ((__VALUE__) == LL_DMA_CHANNEL_4) || \
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76 | ((__VALUE__) == LL_DMA_CHANNEL_5) || \
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77 | ((__VALUE__) == LL_DMA_CHANNEL_6) || \
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78 | ((__VALUE__) == LL_DMA_CHANNEL_7))
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79 |
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80 | #define IS_LL_DMA_PRIORITY(__VALUE__) (((__VALUE__) == LL_DMA_PRIORITY_LOW) || \
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81 | ((__VALUE__) == LL_DMA_PRIORITY_MEDIUM) || \
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82 | ((__VALUE__) == LL_DMA_PRIORITY_HIGH) || \
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83 | ((__VALUE__) == LL_DMA_PRIORITY_VERYHIGH))
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84 |
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85 | #define IS_LL_DMA_ALL_STREAM_INSTANCE(INSTANCE, STREAM) ((((INSTANCE) == DMA1) && \
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86 | (((STREAM) == LL_DMA_STREAM_0) || \
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87 | ((STREAM) == LL_DMA_STREAM_1) || \
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88 | ((STREAM) == LL_DMA_STREAM_2) || \
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89 | ((STREAM) == LL_DMA_STREAM_3) || \
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90 | ((STREAM) == LL_DMA_STREAM_4) || \
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91 | ((STREAM) == LL_DMA_STREAM_5) || \
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92 | ((STREAM) == LL_DMA_STREAM_6) || \
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93 | ((STREAM) == LL_DMA_STREAM_7) || \
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94 | ((STREAM) == LL_DMA_STREAM_ALL))) ||\
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95 | (((INSTANCE) == DMA2) && \
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96 | (((STREAM) == LL_DMA_STREAM_0) || \
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97 | ((STREAM) == LL_DMA_STREAM_1) || \
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98 | ((STREAM) == LL_DMA_STREAM_2) || \
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99 | ((STREAM) == LL_DMA_STREAM_3) || \
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100 | ((STREAM) == LL_DMA_STREAM_4) || \
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101 | ((STREAM) == LL_DMA_STREAM_5) || \
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102 | ((STREAM) == LL_DMA_STREAM_6) || \
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103 | ((STREAM) == LL_DMA_STREAM_7) || \
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104 | ((STREAM) == LL_DMA_STREAM_ALL))))
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105 |
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106 | #define IS_LL_DMA_FIFO_MODE_STATE(STATE) (((STATE) == LL_DMA_FIFOMODE_DISABLE ) || \
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107 | ((STATE) == LL_DMA_FIFOMODE_ENABLE))
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108 |
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109 | #define IS_LL_DMA_FIFO_THRESHOLD(THRESHOLD) (((THRESHOLD) == LL_DMA_FIFOTHRESHOLD_1_4) || \
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110 | ((THRESHOLD) == LL_DMA_FIFOTHRESHOLD_1_2) || \
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111 | ((THRESHOLD) == LL_DMA_FIFOTHRESHOLD_3_4) || \
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112 | ((THRESHOLD) == LL_DMA_FIFOTHRESHOLD_FULL))
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113 |
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114 | #define IS_LL_DMA_MEMORY_BURST(BURST) (((BURST) == LL_DMA_MBURST_SINGLE) || \
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115 | ((BURST) == LL_DMA_MBURST_INC4) || \
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116 | ((BURST) == LL_DMA_MBURST_INC8) || \
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117 | ((BURST) == LL_DMA_MBURST_INC16))
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118 |
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119 | #define IS_LL_DMA_PERIPHERAL_BURST(BURST) (((BURST) == LL_DMA_PBURST_SINGLE) || \
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120 | ((BURST) == LL_DMA_PBURST_INC4) || \
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121 | ((BURST) == LL_DMA_PBURST_INC8) || \
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122 | ((BURST) == LL_DMA_PBURST_INC16))
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123 |
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124 | /**
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125 | * @}
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126 | */
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127 |
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128 | /* Private function prototypes -----------------------------------------------*/
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129 |
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130 | /* Exported functions --------------------------------------------------------*/
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131 | /** @addtogroup DMA_LL_Exported_Functions
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132 | * @{
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133 | */
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134 |
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135 | /** @addtogroup DMA_LL_EF_Init
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136 | * @{
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137 | */
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138 |
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139 | /**
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140 | * @brief De-initialize the DMA registers to their default reset values.
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141 | * @param DMAx DMAx Instance
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142 | * @param Stream This parameter can be one of the following values:
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143 | * @arg @ref LL_DMA_STREAM_0
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144 | * @arg @ref LL_DMA_STREAM_1
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145 | * @arg @ref LL_DMA_STREAM_2
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146 | * @arg @ref LL_DMA_STREAM_3
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147 | * @arg @ref LL_DMA_STREAM_4
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148 | * @arg @ref LL_DMA_STREAM_5
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149 | * @arg @ref LL_DMA_STREAM_6
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150 | * @arg @ref LL_DMA_STREAM_7
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151 | * @arg @ref LL_DMA_STREAM_ALL
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152 | * @retval An ErrorStatus enumeration value:
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153 | * - SUCCESS: DMA registers are de-initialized
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154 | * - ERROR: DMA registers are not de-initialized
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155 | */
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156 | uint32_t LL_DMA_DeInit(DMA_TypeDef *DMAx, uint32_t Stream)
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157 | {
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158 | DMA_Stream_TypeDef *tmp = (DMA_Stream_TypeDef *)DMA1_Stream0;
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159 | ErrorStatus status = SUCCESS;
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160 |
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161 | /* Check the DMA Instance DMAx and Stream parameters*/
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162 | assert_param(IS_LL_DMA_ALL_STREAM_INSTANCE(DMAx, Stream));
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163 |
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164 | if (Stream == LL_DMA_STREAM_ALL)
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165 | {
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166 | if (DMAx == DMA1)
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167 | {
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168 | /* Force reset of DMA clock */
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169 | LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_DMA1);
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170 |
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171 | /* Release reset of DMA clock */
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172 | LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_DMA1);
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173 | }
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174 | else if (DMAx == DMA2)
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175 | {
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176 | /* Force reset of DMA clock */
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177 | LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_DMA2);
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178 |
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179 | /* Release reset of DMA clock */
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180 | LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_DMA2);
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181 | }
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182 | else
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183 | {
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184 | status = ERROR;
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185 | }
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186 | }
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187 | else
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188 | {
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189 | /* Disable the selected Stream */
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190 | LL_DMA_DisableStream(DMAx,Stream);
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191 |
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192 | /* Get the DMA Stream Instance */
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193 | tmp = (DMA_Stream_TypeDef *)(__LL_DMA_GET_STREAM_INSTANCE(DMAx, Stream));
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194 |
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195 | /* Reset DMAx_Streamy configuration register */
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196 | LL_DMA_WriteReg(tmp, CR, 0U);
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197 |
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198 | /* Reset DMAx_Streamy remaining bytes register */
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199 | LL_DMA_WriteReg(tmp, NDTR, 0U);
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200 |
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201 | /* Reset DMAx_Streamy peripheral address register */
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202 | LL_DMA_WriteReg(tmp, PAR, 0U);
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203 |
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204 | /* Reset DMAx_Streamy memory address register */
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205 | LL_DMA_WriteReg(tmp, M0AR, 0U);
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206 |
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207 | /* Reset DMAx_Streamy memory address register */
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208 | LL_DMA_WriteReg(tmp, M1AR, 0U);
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209 |
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210 | /* Reset DMAx_Streamy FIFO control register */
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211 | LL_DMA_WriteReg(tmp, FCR, 0x00000021U);
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212 |
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213 | /* Reset Channel register field for DMAx Stream*/
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214 | LL_DMA_SetChannelSelection(DMAx, Stream, LL_DMA_CHANNEL_0);
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215 |
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216 | if(Stream == LL_DMA_STREAM_0)
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217 | {
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218 | /* Reset the Stream0 pending flags */
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219 | DMAx->LIFCR = 0x0000003FU;
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220 | }
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221 | else if(Stream == LL_DMA_STREAM_1)
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222 | {
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223 | /* Reset the Stream1 pending flags */
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224 | DMAx->LIFCR = 0x00000F40U;
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225 | }
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226 | else if(Stream == LL_DMA_STREAM_2)
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227 | {
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228 | /* Reset the Stream2 pending flags */
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229 | DMAx->LIFCR = 0x003F0000U;
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230 | }
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231 | else if(Stream == LL_DMA_STREAM_3)
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232 | {
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233 | /* Reset the Stream3 pending flags */
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234 | DMAx->LIFCR = 0x0F400000U;
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235 | }
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236 | else if(Stream == LL_DMA_STREAM_4)
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237 | {
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238 | /* Reset the Stream4 pending flags */
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239 | DMAx->HIFCR = 0x0000003FU;
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240 | }
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241 | else if(Stream == LL_DMA_STREAM_5)
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242 | {
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243 | /* Reset the Stream5 pending flags */
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244 | DMAx->HIFCR = 0x00000F40U;
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245 | }
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246 | else if(Stream == LL_DMA_STREAM_6)
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247 | {
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248 | /* Reset the Stream6 pending flags */
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249 | DMAx->HIFCR = 0x003F0000U;
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250 | }
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251 | else if(Stream == LL_DMA_STREAM_7)
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252 | {
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253 | /* Reset the Stream7 pending flags */
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254 | DMAx->HIFCR = 0x0F400000U;
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255 | }
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256 | else
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257 | {
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258 | status = ERROR;
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259 | }
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260 | }
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261 |
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262 | return status;
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263 | }
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264 |
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265 | /**
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266 | * @brief Initialize the DMA registers according to the specified parameters in DMA_InitStruct.
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267 | * @note To convert DMAx_Streamy Instance to DMAx Instance and Streamy, use helper macros :
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268 | * @arg @ref __LL_DMA_GET_INSTANCE
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269 | * @arg @ref __LL_DMA_GET_STREAM
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270 | * @param DMAx DMAx Instance
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271 | * @param Stream This parameter can be one of the following values:
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272 | * @arg @ref LL_DMA_STREAM_0
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273 | * @arg @ref LL_DMA_STREAM_1
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274 | * @arg @ref LL_DMA_STREAM_2
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275 | * @arg @ref LL_DMA_STREAM_3
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276 | * @arg @ref LL_DMA_STREAM_4
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277 | * @arg @ref LL_DMA_STREAM_5
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278 | * @arg @ref LL_DMA_STREAM_6
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279 | * @arg @ref LL_DMA_STREAM_7
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280 | * @param DMA_InitStruct pointer to a @ref LL_DMA_InitTypeDef structure.
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281 | * @retval An ErrorStatus enumeration value:
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282 | * - SUCCESS: DMA registers are initialized
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283 | * - ERROR: Not applicable
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284 | */
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285 | uint32_t LL_DMA_Init(DMA_TypeDef *DMAx, uint32_t Stream, LL_DMA_InitTypeDef *DMA_InitStruct)
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286 | {
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287 | /* Check the DMA Instance DMAx and Stream parameters*/
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288 | assert_param(IS_LL_DMA_ALL_STREAM_INSTANCE(DMAx, Stream));
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289 |
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290 | /* Check the DMA parameters from DMA_InitStruct */
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291 | assert_param(IS_LL_DMA_DIRECTION(DMA_InitStruct->Direction));
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292 | assert_param(IS_LL_DMA_MODE(DMA_InitStruct->Mode));
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293 | assert_param(IS_LL_DMA_PERIPHINCMODE(DMA_InitStruct->PeriphOrM2MSrcIncMode));
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294 | assert_param(IS_LL_DMA_MEMORYINCMODE(DMA_InitStruct->MemoryOrM2MDstIncMode));
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295 | assert_param(IS_LL_DMA_PERIPHDATASIZE(DMA_InitStruct->PeriphOrM2MSrcDataSize));
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296 | assert_param(IS_LL_DMA_MEMORYDATASIZE(DMA_InitStruct->MemoryOrM2MDstDataSize));
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297 | assert_param(IS_LL_DMA_NBDATA(DMA_InitStruct->NbData));
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298 | assert_param(IS_LL_DMA_CHANNEL(DMA_InitStruct->Channel));
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299 | assert_param(IS_LL_DMA_PRIORITY(DMA_InitStruct->Priority));
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300 | assert_param(IS_LL_DMA_FIFO_MODE_STATE(DMA_InitStruct->FIFOMode));
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301 | /* Check the memory burst, peripheral burst and FIFO threshold parameters only
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302 | when FIFO mode is enabled */
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303 | if(DMA_InitStruct->FIFOMode != LL_DMA_FIFOMODE_DISABLE)
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304 | {
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305 | assert_param(IS_LL_DMA_FIFO_THRESHOLD(DMA_InitStruct->FIFOThreshold));
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306 | assert_param(IS_LL_DMA_MEMORY_BURST(DMA_InitStruct->MemBurst));
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307 | assert_param(IS_LL_DMA_PERIPHERAL_BURST(DMA_InitStruct->PeriphBurst));
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308 | }
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309 |
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310 | /*---------------------------- DMAx SxCR Configuration ------------------------
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311 | * Configure DMAx_Streamy: data transfer direction, data transfer mode,
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312 | * peripheral and memory increment mode,
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313 | * data size alignment and priority level with parameters :
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314 | * - Direction: DMA_SxCR_DIR[1:0] bits
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315 | * - Mode: DMA_SxCR_CIRC bit
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316 | * - PeriphOrM2MSrcIncMode: DMA_SxCR_PINC bit
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317 | * - MemoryOrM2MDstIncMode: DMA_SxCR_MINC bit
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318 | * - PeriphOrM2MSrcDataSize: DMA_SxCR_PSIZE[1:0] bits
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319 | * - MemoryOrM2MDstDataSize: DMA_SxCR_MSIZE[1:0] bits
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320 | * - Priority: DMA_SxCR_PL[1:0] bits
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321 | */
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322 | LL_DMA_ConfigTransfer(DMAx, Stream, DMA_InitStruct->Direction | \
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323 | DMA_InitStruct->Mode | \
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324 | DMA_InitStruct->PeriphOrM2MSrcIncMode | \
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325 | DMA_InitStruct->MemoryOrM2MDstIncMode | \
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326 | DMA_InitStruct->PeriphOrM2MSrcDataSize | \
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327 | DMA_InitStruct->MemoryOrM2MDstDataSize | \
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328 | DMA_InitStruct->Priority
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329 | );
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330 |
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331 | if(DMA_InitStruct->FIFOMode != LL_DMA_FIFOMODE_DISABLE)
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332 | {
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333 | /*---------------------------- DMAx SxFCR Configuration ------------------------
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334 | * Configure DMAx_Streamy: fifo mode and fifo threshold with parameters :
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335 | * - FIFOMode: DMA_SxFCR_DMDIS bit
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336 | * - FIFOThreshold: DMA_SxFCR_FTH[1:0] bits
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337 | */
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338 | LL_DMA_ConfigFifo(DMAx, Stream, DMA_InitStruct->FIFOMode, DMA_InitStruct->FIFOThreshold);
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339 |
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340 | /*---------------------------- DMAx SxCR Configuration --------------------------
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341 | * Configure DMAx_Streamy: memory burst transfer with parameters :
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342 | * - MemBurst: DMA_SxCR_MBURST[1:0] bits
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343 | */
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344 | LL_DMA_SetMemoryBurstxfer(DMAx,Stream,DMA_InitStruct->MemBurst);
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345 |
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346 | /*---------------------------- DMAx SxCR Configuration --------------------------
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347 | * Configure DMAx_Streamy: peripheral burst transfer with parameters :
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348 | * - PeriphBurst: DMA_SxCR_PBURST[1:0] bits
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349 | */
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350 | LL_DMA_SetPeriphBurstxfer(DMAx,Stream,DMA_InitStruct->PeriphBurst);
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351 | }
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352 |
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353 | /*-------------------------- DMAx SxM0AR Configuration --------------------------
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354 | * Configure the memory or destination base address with parameter :
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355 | * - MemoryOrM2MDstAddress: DMA_SxM0AR_M0A[31:0] bits
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356 | */
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357 | LL_DMA_SetMemoryAddress(DMAx, Stream, DMA_InitStruct->MemoryOrM2MDstAddress);
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358 |
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359 | /*-------------------------- DMAx SxPAR Configuration ---------------------------
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360 | * Configure the peripheral or source base address with parameter :
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361 | * - PeriphOrM2MSrcAddress: DMA_SxPAR_PA[31:0] bits
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362 | */
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363 | LL_DMA_SetPeriphAddress(DMAx, Stream, DMA_InitStruct->PeriphOrM2MSrcAddress);
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364 |
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365 | /*--------------------------- DMAx SxNDTR Configuration -------------------------
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366 | * Configure the peripheral base address with parameter :
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367 | * - NbData: DMA_SxNDT[15:0] bits
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368 | */
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369 | LL_DMA_SetDataLength(DMAx, Stream, DMA_InitStruct->NbData);
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370 |
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371 | /*--------------------------- DMA SxCR_CHSEL Configuration ----------------------
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372 | * Configure the peripheral base address with parameter :
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373 | * - PeriphRequest: DMA_SxCR_CHSEL[2:0] bits
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374 | */
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375 | LL_DMA_SetChannelSelection(DMAx, Stream, DMA_InitStruct->Channel);
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376 |
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377 | return SUCCESS;
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378 | }
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379 |
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380 | /**
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381 | * @brief Set each @ref LL_DMA_InitTypeDef field to default value.
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382 | * @param DMA_InitStruct Pointer to a @ref LL_DMA_InitTypeDef structure.
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383 | * @retval None
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384 | */
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385 | void LL_DMA_StructInit(LL_DMA_InitTypeDef *DMA_InitStruct)
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386 | {
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387 | /* Set DMA_InitStruct fields to default values */
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388 | DMA_InitStruct->PeriphOrM2MSrcAddress = 0x00000000U;
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389 | DMA_InitStruct->MemoryOrM2MDstAddress = 0x00000000U;
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390 | DMA_InitStruct->Direction = LL_DMA_DIRECTION_PERIPH_TO_MEMORY;
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391 | DMA_InitStruct->Mode = LL_DMA_MODE_NORMAL;
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392 | DMA_InitStruct->PeriphOrM2MSrcIncMode = LL_DMA_PERIPH_NOINCREMENT;
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393 | DMA_InitStruct->MemoryOrM2MDstIncMode = LL_DMA_MEMORY_NOINCREMENT;
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394 | DMA_InitStruct->PeriphOrM2MSrcDataSize = LL_DMA_PDATAALIGN_BYTE;
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395 | DMA_InitStruct->MemoryOrM2MDstDataSize = LL_DMA_MDATAALIGN_BYTE;
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396 | DMA_InitStruct->NbData = 0x00000000U;
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397 | DMA_InitStruct->Channel = LL_DMA_CHANNEL_0;
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398 | DMA_InitStruct->Priority = LL_DMA_PRIORITY_LOW;
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399 | DMA_InitStruct->FIFOMode = LL_DMA_FIFOMODE_DISABLE;
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400 | DMA_InitStruct->FIFOThreshold = LL_DMA_FIFOTHRESHOLD_1_4;
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401 | DMA_InitStruct->MemBurst = LL_DMA_MBURST_SINGLE;
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402 | DMA_InitStruct->PeriphBurst = LL_DMA_PBURST_SINGLE;
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403 | }
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404 |
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405 | /**
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406 | * @}
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407 | */
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408 |
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409 | /**
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410 | * @}
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411 | */
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412 |
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413 | /**
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414 | * @}
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415 | */
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416 |
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417 | #endif /* DMA1 || DMA2 */
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418 |
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419 | /**
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420 | * @}
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421 | */
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422 |
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423 | #endif /* USE_FULL_LL_DRIVER */
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424 |
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425 | /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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