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annotate Common/Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_sai_ex.c @ 167:5e41365ff0d8 cleanup-1

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cleanup: local data and functions can be static (tMenu) Most of the changes in this commit are making code that is only used in this file (compilation unit) static. Careful reading the changes show a little more. Like, removing commented code (as any code change can be found the repository, so nothing is really lost), or removing obvious looking useless code (callerID). Signed-off-by: Jan Mulder <jlmulder@xs4all.nl>
author Jan Mulder <jlmulder@xs4all.nl>
date Fri, 08 Mar 2019 13:47:52 +0100
parents c78bcbd5deda
children
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1 /**
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2 ******************************************************************************
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3 * @file stm32f4xx_hal_sai_ex.c
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4 * @author MCD Application Team
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5 * @brief SAI Extension HAL module driver.
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6 * This file provides firmware functions to manage the following
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7 * functionalities of SAI extension peripheral:
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8 * + Extension features functions
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9 *
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10 @verbatim
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11 ==============================================================================
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12 ##### SAI peripheral extension features #####
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13 ==============================================================================
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14
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15 [..] Comparing to other previous devices, the SAI interface for STM32F446xx
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16 devices contains the following additional features :
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17
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18 (+) Possibility to be clocked from PLLR
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19
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20 ##### How to use this driver #####
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21 ==============================================================================
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22 [..] This driver provides functions to manage several sources to clock SAI
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23
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24 @endverbatim
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25 ******************************************************************************
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26 * @attention
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27 *
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28 * <h2><center>&copy; COPYRIGHT(c) 2017 STMicroelectronics</center></h2>
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29 *
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30 * Redistribution and use in source and binary forms, with or without modification,
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31 * are permitted provided that the following conditions are met:
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32 * 1. Redistributions of source code must retain the above copyright notice,
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33 * this list of conditions and the following disclaimer.
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34 * 2. Redistributions in binary form must reproduce the above copyright notice,
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35 * this list of conditions and the following disclaimer in the documentation
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36 * and/or other materials provided with the distribution.
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37 * 3. Neither the name of STMicroelectronics nor the names of its contributors
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38 * may be used to endorse or promote products derived from this software
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39 * without specific prior written permission.
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40 *
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41 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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42 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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44 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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47 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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48 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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49 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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50 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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51 *
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52 ******************************************************************************
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53 */
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54
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55 /* Includes ------------------------------------------------------------------*/
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56 #include "stm32f4xx_hal.h"
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57
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58 /** @addtogroup STM32F4xx_HAL_Driver
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59 * @{
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60 */
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61
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62 /** @defgroup SAIEx SAIEx
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63 * @brief SAI Extension HAL module driver
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64 * @{
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65 */
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66
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67 #ifdef HAL_SAI_MODULE_ENABLED
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68
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69 #if defined(STM32F427xx) || defined(STM32F437xx) || defined(STM32F429xx) || defined(STM32F439xx) || \
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70 defined(STM32F446xx) || defined(STM32F469xx) || defined(STM32F479xx) || defined(STM32F413xx) || \
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71 defined(STM32F423xx)
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72
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73 /* Private typedef -----------------------------------------------------------*/
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74 /* Private define ------------------------------------------------------------*/
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75 /* SAI registers Masks */
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76 /* Private macro -------------------------------------------------------------*/
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77 /* Private variables ---------------------------------------------------------*/
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78 /* Private function prototypes -----------------------------------------------*/
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79 /* Private functions ---------------------------------------------------------*/
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80
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81 /** @defgroup SAI_Private_Functions SAI Private Functions
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82 * @{
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83 */
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84 /**
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85 * @}
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86 */
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87
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88 /* Exported functions --------------------------------------------------------*/
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89 /** @defgroup SAIEx_Exported_Functions SAI Extended Exported Functions
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90 * @{
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91 */
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92
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93 /** @defgroup SAIEx_Exported_Functions_Group1 Extension features functions
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94 * @brief Extension features functions
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95 *
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96 @verbatim
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97 ===============================================================================
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98 ##### Extension features Functions #####
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99 ===============================================================================
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100 [..]
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101 This subsection provides a set of functions allowing to manage the possible
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102 SAI clock sources.
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103
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104 @endverbatim
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105 * @{
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106 */
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107
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108 /**
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109 * @brief Configure SAI Block synchronization mode
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110 * @param hsai pointer to a SAI_HandleTypeDef structure that contains
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111 * the configuration information for SAI module.
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112 * @retval SAI Clock Input
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113 */
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114 void SAI_BlockSynchroConfig(SAI_HandleTypeDef *hsai)
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115 {
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116 uint32_t tmpregisterGCR = 0U;
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117
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118 #if defined(STM32F446xx)
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119 /* This setting must be done with both audio block (A & B) disabled */
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120 switch(hsai->Init.SynchroExt)
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121 {
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122 case SAI_SYNCEXT_DISABLE :
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123 tmpregisterGCR = 0U;
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124 break;
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125 case SAI_SYNCEXT_OUTBLOCKA_ENABLE :
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126 tmpregisterGCR = SAI_GCR_SYNCOUT_0;
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127 break;
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128 case SAI_SYNCEXT_OUTBLOCKB_ENABLE :
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129 tmpregisterGCR = SAI_GCR_SYNCOUT_1;
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130 break;
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131 default:
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132 break;
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133 }
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134
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135 if((hsai->Init.Synchro) == SAI_SYNCHRONOUS_EXT_SAI2)
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136 {
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137 tmpregisterGCR |= SAI_GCR_SYNCIN_0;
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138 }
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139
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140 if((hsai->Instance == SAI1_Block_A) || (hsai->Instance == SAI1_Block_B))
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141 {
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142 SAI1->GCR = tmpregisterGCR;
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143 }
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144 else
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145 {
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146 SAI2->GCR = tmpregisterGCR;
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147 }
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148 #endif /* STM32F446xx */
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149 #if defined(STM32F427xx) || defined(STM32F437xx) || defined(STM32F429xx) || defined(STM32F439xx) || \
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150 defined(STM32F469xx) || defined(STM32F479xx) || defined(STM32F413xx) || defined(STM32F423xx)
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151 /* This setting must be done with both audio block (A & B) disabled */
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152 switch(hsai->Init.SynchroExt)
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153 {
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154 case SAI_SYNCEXT_DISABLE :
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155 tmpregisterGCR = 0U;
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156 break;
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157 case SAI_SYNCEXT_OUTBLOCKA_ENABLE :
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158 tmpregisterGCR = SAI_GCR_SYNCOUT_0;
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159 break;
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160 case SAI_SYNCEXT_OUTBLOCKB_ENABLE :
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161 tmpregisterGCR = SAI_GCR_SYNCOUT_1;
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162 break;
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163 default:
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164 break;
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165 }
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166 SAI1->GCR = tmpregisterGCR;
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167 #endif /* STM32F427xx || STM32F437xx || STM32F429xx || STM32F439xx || STM32F469xx || STM32F479xx || STM32F413xx || STM32F423xx */
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168 }
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169 /**
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170 * @brief Get SAI Input Clock based on SAI source clock selection
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171 * @param hsai pointer to a SAI_HandleTypeDef structure that contains
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172 * the configuration information for SAI module.
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173 * @retval SAI Clock Input
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174 */
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175 uint32_t SAI_GetInputClock(SAI_HandleTypeDef *hsai)
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176 {
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177 /* This variable used to store the SAI_CK_x (value in Hz) */
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178 uint32_t saiclocksource = 0U;
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179
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180 #if defined(STM32F446xx)
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181 if ((hsai->Instance == SAI1_Block_A) || (hsai->Instance == SAI1_Block_B))
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182 {
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183 saiclocksource = HAL_RCCEx_GetPeriphCLKFreq(RCC_PERIPHCLK_SAI1);
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184 }
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185 else /* SAI2_Block_A || SAI2_Block_B*/
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186 {
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187 saiclocksource = HAL_RCCEx_GetPeriphCLKFreq(RCC_PERIPHCLK_SAI2);
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188 }
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189 #endif /* STM32F446xx */
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190 #if defined(STM32F427xx) || defined(STM32F437xx) || defined(STM32F429xx) || defined(STM32F439xx) || \
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191 defined(STM32F469xx) || defined(STM32F479xx) || defined(STM32F413xx) || defined(STM32F423xx)
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192 uint32_t vcoinput = 0U, tmpreg = 0U;
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193
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194 /* Check the SAI Block parameters */
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195 assert_param(IS_SAI_CLK_SOURCE(hsai->Init.ClockSource));
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196
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197 /* SAI Block clock source selection */
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198 if(hsai->Instance == SAI1_Block_A)
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199 {
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200 __HAL_RCC_SAI_BLOCKACLKSOURCE_CONFIG(hsai->Init.ClockSource);
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201 }
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202 else
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203 {
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204 __HAL_RCC_SAI_BLOCKBCLKSOURCE_CONFIG((uint32_t)(hsai->Init.ClockSource << 2U));
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205 }
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206
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207 /* VCO Input Clock value calculation */
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208 if((RCC->PLLCFGR & RCC_PLLCFGR_PLLSRC) == RCC_PLLSOURCE_HSI)
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209 {
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210 /* In Case the PLL Source is HSI (Internal Clock) */
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211 vcoinput = (HSI_VALUE / (uint32_t)(RCC->PLLCFGR & RCC_PLLCFGR_PLLM));
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212 }
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213 else
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214 {
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215 /* In Case the PLL Source is HSE (External Clock) */
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216 vcoinput = ((HSE_VALUE / (uint32_t)(RCC->PLLCFGR & RCC_PLLCFGR_PLLM)));
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217 }
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218 #if defined(STM32F413xx) || defined(STM32F423xx)
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219 /* SAI_CLK_x : SAI Block Clock configuration for different clock sources selected */
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220 if(hsai->Init.ClockSource == SAI_CLKSOURCE_PLLR)
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221 {
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222 /* Configure the PLLI2S division factor */
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223 /* PLL_VCO Input = PLL_SOURCE/PLLM */
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224 /* PLL_VCO Output = PLL_VCO Input * PLLN */
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225 /* SAI_CLK(first level) = PLL_VCO Output/PLLR */
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226 tmpreg = (RCC->PLLCFGR & RCC_PLLCFGR_PLLR) >> 28U;
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227 saiclocksource = (vcoinput * ((RCC->PLLCFGR & RCC_PLLCFGR_PLLN) >> 6U))/(tmpreg);
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228
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229 /* SAI_CLK_x = SAI_CLK(first level)/PLLDIVR */
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230 tmpreg = (((RCC->DCKCFGR & RCC_DCKCFGR_PLLDIVR) >> 8U) + 1U);
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231
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232 saiclocksource = saiclocksource/(tmpreg);
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233
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234 }
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235 else if(hsai->Init.ClockSource == SAI_CLKSOURCE_PLLI2S)
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236 {
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237 /* Configure the PLLI2S division factor */
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238 /* PLLI2S_VCO Input = PLL_SOURCE/PLLM */
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239 /* PLLI2S_VCO Output = PLLI2S_VCO Input * PLLI2SN */
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240 /* SAI_CLK(first level) = PLLI2S_VCO Output/PLLI2SR */
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241 tmpreg = (RCC->PLLI2SCFGR & RCC_PLLI2SCFGR_PLLI2SR) >> 28U;
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242 saiclocksource = (vcoinput * ((RCC->PLLI2SCFGR & RCC_PLLI2SCFGR_PLLI2SN) >> 6U))/(tmpreg);
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243
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244 /* SAI_CLK_x = SAI_CLK(first level)/PLLI2SDIVR */
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245 tmpreg = ((RCC->DCKCFGR & RCC_DCKCFGR_PLLI2SDIVR) + 1U);
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246 saiclocksource = saiclocksource/(tmpreg);
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247 }
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248 else if(hsai->Init.ClockSource == SAI_CLKSOURCE_HS)
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249 {
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250 if((RCC->PLLCFGR & RCC_PLLCFGR_PLLSRC) == RCC_PLLSOURCE_HSE)
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251 {
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252 /* Get the I2S source clock value */
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253 saiclocksource = (uint32_t)(HSE_VALUE);
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254 }
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255 else
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256 {
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257 /* Get the I2S source clock value */
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258 saiclocksource = (uint32_t)(HSI_VALUE);
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259 }
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260 }
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261 else /* sConfig->ClockSource == SAI_CLKSource_Ext */
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262 {
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263 saiclocksource = EXTERNAL_CLOCK_VALUE;
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264 }
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265 #else
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266 /* SAI_CLK_x : SAI Block Clock configuration for different clock sources selected */
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267 if(hsai->Init.ClockSource == SAI_CLKSOURCE_PLLSAI)
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268 {
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269 /* Configure the PLLI2S division factor */
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270 /* PLLSAI_VCO Input = PLL_SOURCE/PLLM */
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271 /* PLLSAI_VCO Output = PLLSAI_VCO Input * PLLSAIN */
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272 /* SAI_CLK(first level) = PLLSAI_VCO Output/PLLSAIQ */
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273 tmpreg = (RCC->PLLSAICFGR & RCC_PLLSAICFGR_PLLSAIQ) >> 24U;
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274 saiclocksource = (vcoinput * ((RCC->PLLSAICFGR & RCC_PLLSAICFGR_PLLSAIN) >> 6U))/(tmpreg);
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275
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276 /* SAI_CLK_x = SAI_CLK(first level)/PLLSAIDIVQ */
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277 tmpreg = (((RCC->DCKCFGR & RCC_DCKCFGR_PLLSAIDIVQ) >> 8U) + 1U);
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278 saiclocksource = saiclocksource/(tmpreg);
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279
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280 }
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281 else if(hsai->Init.ClockSource == SAI_CLKSOURCE_PLLI2S)
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282 {
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283 /* Configure the PLLI2S division factor */
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284 /* PLLI2S_VCO Input = PLL_SOURCE/PLLM */
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285 /* PLLI2S_VCO Output = PLLI2S_VCO Input * PLLI2SN */
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286 /* SAI_CLK(first level) = PLLI2S_VCO Output/PLLI2SQ */
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287 tmpreg = (RCC->PLLI2SCFGR & RCC_PLLI2SCFGR_PLLI2SQ) >> 24U;
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288 saiclocksource = (vcoinput * ((RCC->PLLI2SCFGR & RCC_PLLI2SCFGR_PLLI2SN) >> 6U))/(tmpreg);
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289
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290 /* SAI_CLK_x = SAI_CLK(first level)/PLLI2SDIVQ */
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291 tmpreg = ((RCC->DCKCFGR & RCC_DCKCFGR_PLLI2SDIVQ) + 1U);
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292 saiclocksource = saiclocksource/(tmpreg);
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293 }
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294 else /* sConfig->ClockSource == SAI_CLKSource_Ext */
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295 {
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296 /* Enable the External Clock selection */
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297 __HAL_RCC_I2S_CONFIG(RCC_I2SCLKSOURCE_EXT);
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298
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299 saiclocksource = EXTERNAL_CLOCK_VALUE;
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300 }
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301 #endif /* STM32F413xx || STM32F423xx */
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302 #endif /* STM32F427xx || STM32F437xx || STM32F429xx || STM32F439xx || STM32F469xx || STM32F479xx || STM32F413xx || STM32F423xx */
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303 /* the return result is the value of SAI clock */
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304 return saiclocksource;
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305 }
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306
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307 /**
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308 * @}
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309 */
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310
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311 /**
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312 * @}
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313 */
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314
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315 #endif /* STM32F427xx || STM32F437xx || STM32F429xx || STM32F439xx || STM32F446xx || STM32F469xx || STM32F479xx || STM32F413xx || STM32F423xx */
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316 #endif /* HAL_SAI_MODULE_ENABLED */
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317 /**
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318 * @}
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319 */
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320
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321 /**
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322 * @}
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323 */
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324
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325 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/