Mercurial > public > ostc4
annotate Common/Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_ll_i2c.c @ 305:305f251cc981 cleanup-4
bugfix, consistency: show deco/NDL really after 1 minute divetime
Related to commit 02d10d955be2. We intended to show deco/NDL after
1 minute divetime, but we included the surface seconds as well.
And yes, this can hardly be called a bugfix. Its simply more
consistent to relate the actual divetime on the display (which
is without surface seconds) with the appearance of deco/NDL after
exactly 1 minute, instead of about 1 minute.
Signed-off-by: Jan Mulder <jlmulder@xs4all.nl>
author | Jan Mulder <jlmulder@xs4all.nl> |
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date | Tue, 21 May 2019 11:11:05 +0200 |
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rev | line source |
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1 /** |
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2 ****************************************************************************** |
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3 * @file stm32f4xx_ll_i2c.c |
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4 * @author MCD Application Team |
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5 * @brief I2C 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</center></h2> |
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10 * |
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11 * Redistribution and use in source and binary forms, with or without modification, |
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12 * are permitted provided that the following conditions are met: |
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13 * 1. Redistributions of source code must retain the above copyright notice, |
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14 * this list of conditions and the following disclaimer. |
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15 * 2. Redistributions in binary form must reproduce the above copyright notice, |
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16 * this list of conditions and the following disclaimer in the documentation |
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17 * and/or other materials provided with the distribution. |
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18 * 3. Neither the name of STMicroelectronics nor the names of its contributors |
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19 * may be used to endorse or promote products derived from this software |
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20 * without specific prior written permission. |
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21 * |
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22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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23 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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25 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
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26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
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28 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
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29 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
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30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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32 * |
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33 ****************************************************************************** |
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34 */ |
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35 #if defined(USE_FULL_LL_DRIVER) |
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36 |
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37 /* Includes ------------------------------------------------------------------*/ |
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38 #include "stm32f4xx_ll_i2c.h" |
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39 #include "stm32f4xx_ll_bus.h" |
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40 #include "stm32f4xx_ll_rcc.h" |
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41 #ifdef USE_FULL_ASSERT |
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42 #include "stm32_assert.h" |
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43 #else |
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44 #define assert_param(expr) ((void)0U) |
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45 #endif |
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46 |
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47 /** @addtogroup STM32F4xx_LL_Driver |
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48 * @{ |
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49 */ |
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50 |
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51 #if defined (I2C1) || defined (I2C2) || defined (I2C3) |
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52 |
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53 /** @defgroup I2C_LL I2C |
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54 * @{ |
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55 */ |
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56 |
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57 /* Private types -------------------------------------------------------------*/ |
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58 /* Private variables ---------------------------------------------------------*/ |
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59 /* Private constants ---------------------------------------------------------*/ |
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60 /* Private macros ------------------------------------------------------------*/ |
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61 /** @addtogroup I2C_LL_Private_Macros |
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62 * @{ |
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63 */ |
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64 |
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65 #define IS_LL_I2C_PERIPHERAL_MODE(__VALUE__) (((__VALUE__) == LL_I2C_MODE_I2C) || \ |
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66 ((__VALUE__) == LL_I2C_MODE_SMBUS_HOST) || \ |
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67 ((__VALUE__) == LL_I2C_MODE_SMBUS_DEVICE) || \ |
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68 ((__VALUE__) == LL_I2C_MODE_SMBUS_DEVICE_ARP)) |
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69 |
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70 #define IS_LL_I2C_CLOCK_SPEED(__VALUE__) (((__VALUE__) > 0U) && ((__VALUE__) <= LL_I2C_MAX_SPEED_FAST)) |
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71 |
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72 #define IS_LL_I2C_DUTY_CYCLE(__VALUE__) (((__VALUE__) == LL_I2C_DUTYCYCLE_2) || \ |
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73 ((__VALUE__) == LL_I2C_DUTYCYCLE_16_9)) |
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74 |
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75 #if defined(I2C_FLTR_ANOFF)&&defined(I2C_FLTR_DNF) |
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76 #define IS_LL_I2C_ANALOG_FILTER(__VALUE__) (((__VALUE__) == LL_I2C_ANALOGFILTER_ENABLE) || \ |
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77 ((__VALUE__) == LL_I2C_ANALOGFILTER_DISABLE)) |
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78 |
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79 #define IS_LL_I2C_DIGITAL_FILTER(__VALUE__) ((__VALUE__) <= 0x0000000FU) |
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80 |
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81 #endif |
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82 #define IS_LL_I2C_OWN_ADDRESS1(__VALUE__) ((__VALUE__) <= 0x000003FFU) |
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83 |
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84 #define IS_LL_I2C_TYPE_ACKNOWLEDGE(__VALUE__) (((__VALUE__) == LL_I2C_ACK) || \ |
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85 ((__VALUE__) == LL_I2C_NACK)) |
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86 |
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87 #define IS_LL_I2C_OWN_ADDRSIZE(__VALUE__) (((__VALUE__) == LL_I2C_OWNADDRESS1_7BIT) || \ |
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88 ((__VALUE__) == LL_I2C_OWNADDRESS1_10BIT)) |
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89 /** |
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90 * @} |
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91 */ |
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92 |
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93 /* Private function prototypes -----------------------------------------------*/ |
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94 |
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95 /* Exported functions --------------------------------------------------------*/ |
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96 /** @addtogroup I2C_LL_Exported_Functions |
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97 * @{ |
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98 */ |
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99 |
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100 /** @addtogroup I2C_LL_EF_Init |
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101 * @{ |
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102 */ |
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103 |
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104 /** |
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105 * @brief De-initialize the I2C registers to their default reset values. |
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106 * @param I2Cx I2C Instance. |
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107 * @retval An ErrorStatus enumeration value: |
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108 * - SUCCESS: I2C registers are de-initialized |
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109 * - ERROR: I2C registers are not de-initialized |
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110 */ |
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111 uint32_t LL_I2C_DeInit(I2C_TypeDef *I2Cx) |
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112 { |
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113 ErrorStatus status = SUCCESS; |
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114 |
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115 /* Check the I2C Instance I2Cx */ |
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116 assert_param(IS_I2C_ALL_INSTANCE(I2Cx)); |
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117 |
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118 if (I2Cx == I2C1) |
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119 { |
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120 /* Force reset of I2C clock */ |
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121 LL_APB1_GRP1_ForceReset(LL_APB1_GRP1_PERIPH_I2C1); |
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122 |
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123 /* Release reset of I2C clock */ |
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124 LL_APB1_GRP1_ReleaseReset(LL_APB1_GRP1_PERIPH_I2C1); |
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125 } |
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126 else if (I2Cx == I2C2) |
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127 { |
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128 /* Force reset of I2C clock */ |
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129 LL_APB1_GRP1_ForceReset(LL_APB1_GRP1_PERIPH_I2C2); |
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130 |
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131 /* Release reset of I2C clock */ |
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132 LL_APB1_GRP1_ReleaseReset(LL_APB1_GRP1_PERIPH_I2C2); |
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133 |
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134 } |
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135 #if defined(I2C3) |
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136 else if (I2Cx == I2C3) |
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137 { |
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138 /* Force reset of I2C clock */ |
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139 LL_APB1_GRP1_ForceReset(LL_APB1_GRP1_PERIPH_I2C3); |
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140 |
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141 /* Release reset of I2C clock */ |
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142 LL_APB1_GRP1_ReleaseReset(LL_APB1_GRP1_PERIPH_I2C3); |
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143 } |
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144 #endif |
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145 else |
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146 { |
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147 status = ERROR; |
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148 } |
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149 |
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150 return status; |
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151 } |
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152 |
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153 /** |
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154 * @brief Initialize the I2C registers according to the specified parameters in I2C_InitStruct. |
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155 * @param I2Cx I2C Instance. |
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156 * @param I2C_InitStruct pointer to a @ref LL_I2C_InitTypeDef structure. |
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157 * @retval An ErrorStatus enumeration value: |
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158 * - SUCCESS: I2C registers are initialized |
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159 * - ERROR: Not applicable |
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160 */ |
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161 uint32_t LL_I2C_Init(I2C_TypeDef *I2Cx, LL_I2C_InitTypeDef *I2C_InitStruct) |
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162 { |
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163 LL_RCC_ClocksTypeDef rcc_clocks; |
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164 |
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165 /* Check the I2C Instance I2Cx */ |
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166 assert_param(IS_I2C_ALL_INSTANCE(I2Cx)); |
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167 |
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168 /* Check the I2C parameters from I2C_InitStruct */ |
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169 assert_param(IS_LL_I2C_PERIPHERAL_MODE(I2C_InitStruct->PeripheralMode)); |
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170 assert_param(IS_LL_I2C_CLOCK_SPEED(I2C_InitStruct->ClockSpeed)); |
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171 assert_param(IS_LL_I2C_DUTY_CYCLE(I2C_InitStruct->DutyCycle)); |
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172 #if defined(I2C_FLTR_ANOFF)&&defined(I2C_FLTR_DNF) |
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173 assert_param(IS_LL_I2C_ANALOG_FILTER(I2C_InitStruct->AnalogFilter)); |
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174 assert_param(IS_LL_I2C_DIGITAL_FILTER(I2C_InitStruct->DigitalFilter)); |
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175 #endif |
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176 assert_param(IS_LL_I2C_OWN_ADDRESS1(I2C_InitStruct->OwnAddress1)); |
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177 assert_param(IS_LL_I2C_TYPE_ACKNOWLEDGE(I2C_InitStruct->TypeAcknowledge)); |
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178 assert_param(IS_LL_I2C_OWN_ADDRSIZE(I2C_InitStruct->OwnAddrSize)); |
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179 |
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180 /* Disable the selected I2Cx Peripheral */ |
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181 LL_I2C_Disable(I2Cx); |
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182 |
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183 /* Retrieve Clock frequencies */ |
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184 LL_RCC_GetSystemClocksFreq(&rcc_clocks); |
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185 |
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186 #if defined(I2C_FLTR_ANOFF)&&defined(I2C_FLTR_DNF) |
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187 /*---------------------------- I2Cx FLTR Configuration ----------------------- |
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188 * Configure the analog and digital noise filters with parameters : |
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189 * - AnalogFilter: I2C_FLTR_ANFOFF bit |
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190 * - DigitalFilter: I2C_FLTR_DNF[3:0] bits |
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191 */ |
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192 LL_I2C_ConfigFilters(I2Cx, I2C_InitStruct->AnalogFilter, I2C_InitStruct->DigitalFilter); |
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193 |
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194 #endif |
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195 /*---------------------------- I2Cx SCL Clock Speed Configuration ------------ |
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196 * Configure the SCL speed : |
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197 * - ClockSpeed: I2C_CR2_FREQ[5:0], I2C_TRISE_TRISE[5:0], I2C_CCR_FS, |
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198 * and I2C_CCR_CCR[11:0] bits |
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199 * - DutyCycle: I2C_CCR_DUTY[7:0] bits |
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200 */ |
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201 LL_I2C_ConfigSpeed(I2Cx, rcc_clocks.PCLK1_Frequency, I2C_InitStruct->ClockSpeed, I2C_InitStruct->DutyCycle); |
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202 |
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203 /*---------------------------- I2Cx OAR1 Configuration ----------------------- |
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204 * Disable, Configure and Enable I2Cx device own address 1 with parameters : |
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205 * - OwnAddress1: I2C_OAR1_ADD[9:8], I2C_OAR1_ADD[7:1] and I2C_OAR1_ADD0 bits |
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206 * - OwnAddrSize: I2C_OAR1_ADDMODE bit |
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207 */ |
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208 LL_I2C_SetOwnAddress1(I2Cx, I2C_InitStruct->OwnAddress1, I2C_InitStruct->OwnAddrSize); |
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209 |
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210 /*---------------------------- I2Cx MODE Configuration ----------------------- |
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211 * Configure I2Cx peripheral mode with parameter : |
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212 * - PeripheralMode: I2C_CR1_SMBUS, I2C_CR1_SMBTYPE and I2C_CR1_ENARP bits |
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213 */ |
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214 LL_I2C_SetMode(I2Cx, I2C_InitStruct->PeripheralMode); |
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215 |
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216 /* Enable the selected I2Cx Peripheral */ |
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217 LL_I2C_Enable(I2Cx); |
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218 |
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219 /*---------------------------- I2Cx CR2 Configuration ------------------------ |
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220 * Configure the ACKnowledge or Non ACKnowledge condition |
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221 * after the address receive match code or next received byte with parameter : |
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222 * - TypeAcknowledge: I2C_CR2_NACK bit |
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223 */ |
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224 LL_I2C_AcknowledgeNextData(I2Cx, I2C_InitStruct->TypeAcknowledge); |
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225 |
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226 return SUCCESS; |
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227 } |
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228 |
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229 /** |
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230 * @brief Set each @ref LL_I2C_InitTypeDef field to default value. |
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231 * @param I2C_InitStruct Pointer to a @ref LL_I2C_InitTypeDef structure. |
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232 * @retval None |
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233 */ |
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234 void LL_I2C_StructInit(LL_I2C_InitTypeDef *I2C_InitStruct) |
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235 { |
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236 /* Set I2C_InitStruct fields to default values */ |
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237 I2C_InitStruct->PeripheralMode = LL_I2C_MODE_I2C; |
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238 I2C_InitStruct->ClockSpeed = 5000U; |
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239 I2C_InitStruct->DutyCycle = LL_I2C_DUTYCYCLE_2; |
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240 #if defined(I2C_FLTR_ANOFF)&&defined(I2C_FLTR_DNF) |
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241 I2C_InitStruct->AnalogFilter = LL_I2C_ANALOGFILTER_ENABLE; |
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242 I2C_InitStruct->DigitalFilter = 0U; |
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243 #endif |
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244 I2C_InitStruct->OwnAddress1 = 0U; |
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245 I2C_InitStruct->TypeAcknowledge = LL_I2C_NACK; |
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246 I2C_InitStruct->OwnAddrSize = LL_I2C_OWNADDRESS1_7BIT; |
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247 } |
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248 |
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249 /** |
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250 * @} |
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251 */ |
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252 |
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253 /** |
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254 * @} |
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255 */ |
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256 |
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257 /** |
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258 * @} |
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259 */ |
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260 |
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261 #endif /* I2C1 || I2C2 || I2C3 */ |
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262 |
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263 /** |
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264 * @} |
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265 */ |
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266 |
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267 #endif /* USE_FULL_LL_DRIVER */ |
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268 |
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269 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |