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annotate Common/Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_ll_lptim.c @ 829:d5e68cc08f9a Evo_2_23
Changes wording from travel gas to work gas to use same wording as for other OSTCs
author | Ideenmodellierer |
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date | Thu, 16 Nov 2023 20:25:01 +0100 |
parents | c78bcbd5deda |
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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_lptim.c |
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4 * @author MCD Application Team |
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5 * @brief LPTIM 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_lptim.h" |
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39 #include "stm32f4xx_ll_bus.h" |
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40 |
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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 (LPTIM1) || defined (LPTIM2) |
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52 |
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53 /** @addtogroup LPTIM_LL |
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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 LPTIM_LL_Private_Macros |
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62 * @{ |
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63 */ |
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64 #define IS_LPTIM_CLOCK_SOURCE(__VALUE__) (((__VALUE__) == LL_LPTIM_CLK_SOURCE_INTERNAL) \ |
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65 || ((__VALUE__) == LL_LPTIM_CLK_SOURCE_EXTERNAL)) |
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66 |
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67 #define IS_LPTIM_CLOCK_PRESCALER(__VALUE__) (((__VALUE__) == LL_LPTIM_PRESCALER_DIV1) \ |
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68 || ((__VALUE__) == LL_LPTIM_PRESCALER_DIV2) \ |
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69 || ((__VALUE__) == LL_LPTIM_PRESCALER_DIV4) \ |
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70 || ((__VALUE__) == LL_LPTIM_PRESCALER_DIV8) \ |
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71 || ((__VALUE__) == LL_LPTIM_PRESCALER_DIV16) \ |
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72 || ((__VALUE__) == LL_LPTIM_PRESCALER_DIV32) \ |
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73 || ((__VALUE__) == LL_LPTIM_PRESCALER_DIV64) \ |
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74 || ((__VALUE__) == LL_LPTIM_PRESCALER_DIV128)) |
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75 |
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76 #define IS_LPTIM_WAVEFORM(__VALUE__) (((__VALUE__) == LL_LPTIM_OUTPUT_WAVEFORM_PWM) \ |
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77 || ((__VALUE__) == LL_LPTIM_OUTPUT_WAVEFORM_SETONCE)) |
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78 |
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79 #define IS_LPTIM_OUTPUT_POLARITY(__VALUE__) (((__VALUE__) == LL_LPTIM_OUTPUT_POLARITY_REGULAR) \ |
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80 || ((__VALUE__) == LL_LPTIM_OUTPUT_POLARITY_INVERSE)) |
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81 /** |
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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 /* Private function prototypes -----------------------------------------------*/ |
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87 /* Exported functions --------------------------------------------------------*/ |
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88 /** @addtogroup LPTIM_LL_Exported_Functions |
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89 * @{ |
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90 */ |
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91 |
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92 /** @addtogroup LPTIM_LL_EF_Init |
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93 * @{ |
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94 */ |
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95 |
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96 /** |
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97 * @brief Set LPTIMx registers to their reset values. |
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98 * @param LPTIMx LP Timer instance |
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99 * @retval An ErrorStatus enumeration value: |
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100 * - SUCCESS: LPTIMx registers are de-initialized |
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101 * - ERROR: invalid LPTIMx instance |
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102 */ |
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103 ErrorStatus LL_LPTIM_DeInit(LPTIM_TypeDef* LPTIMx) |
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104 { |
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105 ErrorStatus result = SUCCESS; |
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106 |
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107 /* Check the parameters */ |
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108 assert_param(IS_LPTIM_INSTANCE(LPTIMx)); |
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109 |
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110 if (LPTIMx == LPTIM1) |
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111 { |
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112 LL_APB1_GRP1_ForceReset(LL_APB1_GRP1_PERIPH_LPTIM1); |
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113 LL_APB1_GRP1_ReleaseReset(LL_APB1_GRP1_PERIPH_LPTIM1); |
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114 } |
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115 #if defined(LPTIM2) |
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116 else if (LPTIMx == LPTIM2) |
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117 { |
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118 LL_APB1_GRP2_ForceReset(LL_APB1_GRP2_PERIPH_LPTIM2); |
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119 LL_APB1_GRP2_ReleaseReset(LL_APB1_GRP2_PERIPH_LPTIM2); |
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120 } |
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121 #endif |
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122 else |
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123 { |
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124 result = ERROR; |
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125 } |
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126 |
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127 return result; |
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128 } |
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129 |
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130 /** |
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131 * @brief Set each fields of the LPTIM_InitStruct structure to its default |
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132 * value. |
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133 * @param LPTIM_InitStruct pointer to a @ref LL_LPTIM_InitTypeDef structure |
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134 * @retval None |
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135 */ |
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136 void LL_LPTIM_StructInit(LL_LPTIM_InitTypeDef* LPTIM_InitStruct) |
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137 { |
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138 /* Set the default configuration */ |
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139 LPTIM_InitStruct->ClockSource = LL_LPTIM_CLK_SOURCE_INTERNAL; |
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140 LPTIM_InitStruct->Prescaler = LL_LPTIM_PRESCALER_DIV1; |
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141 LPTIM_InitStruct->Waveform = LL_LPTIM_OUTPUT_WAVEFORM_PWM; |
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142 LPTIM_InitStruct->Polarity = LL_LPTIM_OUTPUT_POLARITY_REGULAR; |
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143 } |
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144 |
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145 /** |
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146 * @brief Configure the LPTIMx peripheral according to the specified parameters. |
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147 * @note LL_LPTIM_Init can only be called when the LPTIM instance is disabled. |
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148 * @note LPTIMx can be disabled using unitary function @ref LL_LPTIM_Disable(). |
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149 * @param LPTIMx LP Timer Instance |
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150 * @param LPTIM_InitStruct pointer to a @ref LL_LPTIM_InitTypeDef structure |
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151 * @retval An ErrorStatus enumeration value: |
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152 * - SUCCESS: LPTIMx instance has been initialized |
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153 * - ERROR: LPTIMx instance hasn't been initialized |
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154 */ |
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155 ErrorStatus LL_LPTIM_Init(LPTIM_TypeDef * LPTIMx, LL_LPTIM_InitTypeDef* LPTIM_InitStruct) |
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156 { |
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157 ErrorStatus result = SUCCESS; |
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158 |
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159 /* The LPTIMx_CFGR register must only be modified when the LPTIM is disabled |
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160 (ENABLE bit is reset to 0). |
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161 */ |
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162 if (LL_LPTIM_IsEnabled(LPTIMx)) |
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163 { |
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164 result = ERROR; |
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165 } |
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166 else |
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167 { |
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168 /* Check the parameters */ |
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169 assert_param(IS_LPTIM_INSTANCE(LPTIMx)); |
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170 assert_param(IS_LPTIM_CLOCK_SOURCE(LPTIM_InitStruct->ClockSource)); |
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171 assert_param(IS_LPTIM_CLOCK_PRESCALER(LPTIM_InitStruct->Prescaler)); |
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172 assert_param(IS_LPTIM_WAVEFORM(LPTIM_InitStruct->Waveform)); |
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173 assert_param(IS_LPTIM_OUTPUT_POLARITY(LPTIM_InitStruct->Polarity)); |
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174 |
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175 /* Set CKSEL bitfield according to ClockSource value */ |
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176 /* Set PRESC bitfield according to Prescaler value */ |
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177 /* Set WAVE bitfield according to Waveform value */ |
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178 /* Set WAVEPOL bitfield according to Polarity value */ |
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179 MODIFY_REG(LPTIMx->CFGR, |
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180 (LPTIM_CFGR_CKSEL | LPTIM_CFGR_PRESC | LPTIM_CFGR_WAVE| LPTIM_CFGR_WAVPOL), |
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181 LPTIM_InitStruct->ClockSource | \ |
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182 LPTIM_InitStruct->Prescaler | \ |
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183 LPTIM_InitStruct->Waveform | \ |
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184 LPTIM_InitStruct->Polarity); |
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185 } |
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186 |
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187 return result; |
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188 } |
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189 |
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190 /** |
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191 * @} |
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192 */ |
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193 |
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194 /** |
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195 * @} |
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196 */ |
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197 |
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198 /** |
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199 * @} |
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200 */ |
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201 |
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202 #endif /* defined (LPTIM1) || defined (LPTIM2) */ |
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203 |
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204 /** |
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205 * @} |
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206 */ |
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207 |
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208 #endif /* USE_FULL_LL_DRIVER */ |
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209 |
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210 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |