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1 | ingob | 1 | /******************** (C) COPYRIGHT 2006 STMicroelectronics ******************** |
2 | * File Name : 91x_tim.c |
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3 | * Author : MCD Application Team |
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4 | * Date First Issued : 05/18/2006 : Version 1.0 |
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5 | * Description : This file provides all the TIM software functions. |
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6 | ******************************************************************************** |
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7 | * History: |
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8 | * 05/22/2007 : Version 1.2 |
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9 | * 05/24/2006 : Version 1.1 |
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10 | * 05/18/2006 : Version 1.0 |
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11 | ******************************************************************************** |
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12 | * THE PRESENT SOFTWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS WITH |
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13 | * CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME. AS |
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14 | * A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT, INDIRECT |
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15 | * OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE CONTENT |
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16 | * OF SUCH SOFTWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING INFORMATION |
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17 | * CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS. |
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18 | *******************************************************************************/ |
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19 | |||
20 | /* Includes ------------------------------------------------------------------*/ |
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21 | #include "91x_tim.h" |
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22 | |||
23 | /* Include of other module interface headers ---------------------------------*/ |
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24 | /* Local includes ------------------------------------------------------------*/ |
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25 | /* Private typedef -----------------------------------------------------------*/ |
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26 | /* Private define ------------------------------------------------------------*/ |
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27 | |||
28 | /* TIM Bits Masks */ |
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29 | |||
30 | #define TIM_PWM_MASK 0x0010 |
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31 | #define TIM_OPM_MASK 0x0020 |
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32 | #define TIM_OC1_ENABLE_MASK 0x0040 |
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33 | #define TIM_OC1_DISABLE_MASK 0xFFBF |
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34 | #define TIM_OC2_ENABLE_MASK 0x0080 |
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35 | #define TIM_OC2_DISABLE_MASK 0xFF7F |
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36 | |||
37 | #define TIM_OLVL1_SET_MASK 0x0100 |
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38 | #define TIM_OLVL1_RESET_MASK 0xFEFF |
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39 | |||
40 | #define TIM_OLVL2_SET_MASK 0x0200 |
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41 | #define TIM_OLVL2_RESET_MASK 0xFDFF |
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42 | |||
43 | #define TIM_ENABLE_MASK 0x8000 |
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44 | #define TIM_DISABLE_MASK 0x7FFF |
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45 | |||
46 | #define TIM_DMA_CLEAR_MASK 0xCFFF |
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47 | |||
48 | /* Private macro -------------------------------------------------------------*/ |
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49 | /* Private variables ---------------------------------------------------------*/ |
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50 | /* Private function prototypes -----------------------------------------------*/ |
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51 | /* Interface functions -------------------------------------------------------*/ |
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52 | /* Private functions ---------------------------------------------------------*/ |
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53 | /******************************************************************************* |
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54 | * Function Name : TIM_DeInit |
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55 | * Description : Initializes TIM peripheral control and registers to their |
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56 | * : default reset values. |
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57 | * Input : TIMx: where x can be from 0 to 3 to select the TIM |
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58 | * peripheral. |
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59 | * Output : None |
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60 | * Return : None |
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61 | *******************************************************************************/ |
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62 | void TIM_DeInit(TIM_TypeDef *TIMx) |
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63 | { |
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64 | if((TIMx == TIM0)||(TIMx == TIM1)) |
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65 | { |
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66 | SCU_APBPeriphReset(__TIM01, DISABLE); /* TIM0 & TIM1 Reset's off */ |
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67 | } |
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68 | else |
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69 | { |
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70 | SCU_APBPeriphReset(__TIM23, DISABLE); /* TIM2 & TIM3 Reset's off */ |
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71 | } |
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72 | |||
73 | /* Set all the TIMx registers to thier default values */ |
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74 | TIMx->OC1R = 0x8000; |
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75 | TIMx->OC2R = 0x8000; |
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76 | TIMx->CR1 = 0x0; |
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77 | TIMx->CR2 = 0x1; |
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78 | TIMx->CNTR = 0x1234; |
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79 | TIMx->SR = 0x0; |
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80 | } |
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81 | |||
82 | /******************************************************************************* |
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83 | * Function Name : TIM_StructInit |
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84 | * Description : Fills in a TIM_InitTypeDef structure with the reset value of |
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85 | * each parameter. |
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86 | * Input : TIM_InitStruct : pointer to a TIM_InitTypeDef structure |
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87 | which will be initialized. |
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88 | * Output : None |
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89 | * Return : None. |
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90 | *******************************************************************************/ |
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91 | void TIM_StructInit(TIM_InitTypeDef *TIM_InitStruct) |
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92 | { |
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93 | TIM_InitStruct->TIM_Mode = 0x0000; |
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94 | TIM_InitStruct->TIM_OC1_Modes = 0x0000; |
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95 | TIM_InitStruct->TIM_OC2_Modes = 0x0000; |
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96 | TIM_InitStruct->TIM_Clock_Source = 0x0000; |
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97 | TIM_InitStruct->TIM_Clock_Edge = 0x0000; |
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98 | TIM_InitStruct->TIM_OPM_INPUT_Edge = 0x0000; |
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99 | TIM_InitStruct->TIM_ICAP1_Edge = 0x0000; |
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100 | TIM_InitStruct->TIM_ICAP2_Edge = 0x0000; |
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101 | TIM_InitStruct->TIM_Prescaler = 0x0000; |
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102 | TIM_InitStruct->TIM_Pulse_Level_1 = 0x0000; |
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103 | TIM_InitStruct->TIM_Pulse_Level_2 = 0x0000; |
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104 | TIM_InitStruct->TIM_Period_Level = 0x0000; |
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105 | TIM_InitStruct->TIM_Pulse_Length_1 = 0x0000; |
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106 | TIM_InitStruct->TIM_Pulse_Length_2 = 0x0000; |
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107 | TIM_InitStruct->TIM_Full_Period = 0x0000; |
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108 | } |
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109 | |||
110 | /******************************************************************************* |
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111 | * Function Name : TIM_Init |
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112 | * Description : Initializes TIM peripheral according to the specified |
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113 | * parameters in the TIM_InitTypeDef structure. |
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114 | * Input1 : TIMx: where x can be from 0 to 3 to select the TIM |
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115 | * peripheral. |
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116 | * Input2 : TIM_InitStruct: pointer to a TIM_InitTypeDef structure that |
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117 | * contains the configuration information for the specified |
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118 | * TIM peripheral. |
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119 | * Output : None |
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120 | * Return : None |
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121 | *******************************************************************************/ |
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122 | |||
123 | void TIM_Init(TIM_TypeDef *TIMx, TIM_InitTypeDef *TIM_InitStruct) |
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124 | { |
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125 | /***************************** Clock configuration ****************************/ |
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126 | |||
127 | if (TIM_InitStruct->TIM_Clock_Source == TIM_CLK_APB) |
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128 | { |
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129 | /* APB clock */ |
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130 | TIMx->CR1 &= TIM_CLK_APB; |
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131 | } |
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132 | else |
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133 | { |
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134 | /* External/SCU clock */ |
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135 | TIMx->CR1 |= TIM_CLK_EXTERNAL; |
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136 | if (TIM_InitStruct->TIM_Clock_Edge == TIM_CLK_EDGE_RISING) |
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137 | { |
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138 | /* Clock rising edge */ |
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139 | TIMx->CR1 |= TIM_CLK_EDGE_RISING; |
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140 | } |
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141 | else |
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142 | { |
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143 | /* Clock falling edge */ |
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144 | TIMx->CR1 &= TIM_CLK_EDGE_FALLING; |
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145 | } |
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146 | } |
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147 | |||
148 | /************************** Prescaler configuration ***************************/ |
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149 | |||
150 | TIMx->CR2 =( TIMx->CR2 & 0xFF00 )|TIM_InitStruct->TIM_Prescaler ; |
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151 | |||
152 | /********************************** TIM Modes *********************************/ |
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153 | |||
154 | switch ( TIM_InitStruct->TIM_Mode) |
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155 | { |
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156 | /******************************* PWM Input mode *******************************/ |
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157 | |||
158 | case TIM_PWMI: |
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159 | |||
160 | /* Set the PWMI Bit */ |
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161 | TIMx->CR1 |= TIM_PWMI; |
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162 | |||
163 | /* Set the first edge Level */ |
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164 | if ( TIM_InitStruct->TIM_ICAP1_Edge == TIM_ICAP1_EDGE_RISING) |
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165 | { |
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166 | TIMx->CR1 |= TIM_ICAP1_EDGE_RISING; |
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167 | } |
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168 | else |
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169 | { |
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170 | TIMx->CR1 &= TIM_ICAP1_EDGE_FALLING; |
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171 | } |
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172 | |||
173 | /* Set the Second edge Level ( Opposite of the first level ) */ |
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174 | if ( TIM_InitStruct->TIM_ICAP1_Edge == TIM_ICAP1_EDGE_RISING) |
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175 | { |
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176 | TIMx->CR1 &= TIM_ICAP2_EDGE_FALLING; |
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177 | } |
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178 | else |
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179 | { |
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180 | TIMx->CR1 |= TIM_ICAP2_EDGE_RISING; |
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181 | } |
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182 | |||
183 | break; |
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184 | |||
185 | /************************** Output compare channel 1 **************************/ |
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186 | |||
187 | case TIM_OCM_CHANNEL_1: |
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188 | |||
189 | if (TIM_InitStruct->TIM_Pulse_Level_1 == TIM_HIGH) |
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190 | { |
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191 | TIMx->CR1 |= TIM_OLVL1_SET_MASK; |
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192 | } |
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193 | else |
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194 | { |
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195 | TIMx->CR1 &= TIM_OLVL1_RESET_MASK; |
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196 | } |
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197 | |||
198 | TIMx->OC1R = TIM_InitStruct->TIM_Pulse_Length_1; |
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199 | |||
200 | if (TIM_InitStruct->TIM_OC1_Modes == TIM_TIMING) |
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201 | { |
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202 | TIMx->CR1 &= TIM_OC1_DISABLE_MASK; |
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203 | } |
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204 | else |
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205 | { |
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206 | TIMx->CR1 |= TIM_OC1_ENABLE_MASK; |
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207 | } |
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208 | |||
209 | break; |
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210 | |||
211 | /************************** Output compare channel 2 **************************/ |
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212 | |||
213 | case TIM_OCM_CHANNEL_2: |
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214 | |||
215 | if (TIM_InitStruct->TIM_Pulse_Level_2 == TIM_HIGH) |
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216 | { |
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217 | TIMx->CR1 |= TIM_OLVL2_SET_MASK; |
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218 | } |
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219 | else |
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220 | { |
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221 | TIMx->CR1 &= TIM_OLVL2_RESET_MASK; |
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222 | } |
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223 | |||
224 | TIMx->OC2R = TIM_InitStruct->TIM_Pulse_Length_2; |
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225 | |||
226 | if (TIM_InitStruct->TIM_OC2_Modes == TIM_TIMING) |
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227 | { |
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228 | TIMx->CR1 &= TIM_OC2_DISABLE_MASK; |
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229 | } |
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230 | else |
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231 | { |
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232 | TIMx->CR1 |= TIM_OC2_ENABLE_MASK; |
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233 | } |
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234 | |||
235 | break; |
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236 | |||
237 | /************************ Output compare channel 1 & 2 ************************/ |
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238 | |||
239 | case TIM_OCM_CHANNEL_12: |
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240 | |||
241 | TIMx->OC2R = TIM_InitStruct->TIM_Pulse_Length_2; |
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242 | TIMx->OC1R = TIM_InitStruct->TIM_Pulse_Length_1; |
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243 | |||
244 | if (TIM_InitStruct->TIM_OC2_Modes == TIM_TIMING) |
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245 | { |
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246 | TIMx->CR1 &= TIM_OC2_DISABLE_MASK; |
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247 | } |
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248 | else |
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249 | { |
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250 | TIMx->CR1 |= TIM_OC2_ENABLE_MASK; |
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251 | } |
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252 | |||
253 | if (TIM_InitStruct->TIM_OC1_Modes == TIM_TIMING) |
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254 | { |
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255 | TIMx->CR1 &= TIM_OC1_DISABLE_MASK; |
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256 | } |
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257 | else |
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258 | { |
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259 | TIMx->CR1 |= TIM_OC1_ENABLE_MASK; |
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260 | } |
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261 | |||
262 | if (TIM_InitStruct->TIM_Pulse_Level_1 == TIM_HIGH) |
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263 | { |
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264 | TIMx->CR1 |= TIM_OLVL1_SET_MASK; |
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265 | } |
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266 | else |
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267 | { |
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268 | TIMx->CR1 &= TIM_OLVL1_RESET_MASK; |
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269 | } |
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270 | |||
271 | if (TIM_InitStruct->TIM_Pulse_Level_2 == TIM_HIGH) |
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272 | { |
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273 | TIMx->CR1 |= TIM_OLVL2_SET_MASK; |
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274 | } |
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275 | else |
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276 | { |
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277 | TIMx->CR1 &= TIM_OLVL2_RESET_MASK; |
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278 | } |
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279 | |||
280 | break; |
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281 | |||
282 | /********************************** PWM mode **********************************/ |
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283 | |||
284 | case TIM_PWM: |
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285 | |||
286 | /* Set the Level During the pulse */ |
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287 | if ( TIM_InitStruct->TIM_Pulse_Level_1 == TIM_HIGH) |
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288 | { |
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289 | TIMx->CR1 |= TIM_OLVL2_SET_MASK; |
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290 | } |
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291 | else |
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292 | { |
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293 | TIMx->CR1 &= TIM_OLVL2_RESET_MASK; |
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294 | } |
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295 | |||
296 | /* Set the Level after the pulse */ |
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297 | if (TIM_InitStruct->TIM_Period_Level == TIM_HIGH) |
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298 | { |
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299 | TIMx->CR1 |= TIM_OLVL1_SET_MASK; |
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300 | } |
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301 | else |
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302 | { |
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303 | TIMx->CR1 &= TIM_OLVL1_RESET_MASK; |
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304 | } |
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305 | |||
306 | /* Set the OCAE */ |
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307 | TIMx->CR1 |= TIM_OC1_ENABLE_MASK; |
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308 | |||
309 | /* Set the PWM Bit */ |
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310 | TIMx->CR1 |= TIM_PWM_MASK; |
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311 | |||
312 | /* Set the Duty Cycle value */ |
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313 | |||
314 | TIMx->OC1R = TIM_InitStruct->TIM_Pulse_Length_1 ; |
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315 | |||
316 | /* Set the Full Period */ |
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317 | |||
318 | TIMx->OC2R = TIM_InitStruct->TIM_Full_Period ; |
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319 | |||
320 | break; |
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321 | |||
322 | /******************************* One pulse mode *******************************/ |
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323 | |||
324 | case TIM_OPM: |
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325 | |||
326 | /* Set the Level During the pulse */ |
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327 | if (TIM_InitStruct->TIM_Pulse_Level_1 == TIM_HIGH) |
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328 | { |
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329 | TIMx->CR1 |= TIM_OLVL2_SET_MASK; |
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330 | } |
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331 | |||
332 | /* Set the Level after the pulse */ |
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333 | if (TIM_InitStruct->TIM_Period_Level == TIM_HIGH) |
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334 | { |
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335 | TIMx->CR1 |= TIM_OLVL1_SET_MASK; |
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336 | } |
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337 | |||
338 | /* Set the Activation Edge on the ICAP 1 */ |
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339 | if (TIM_InitStruct->TIM_OPM_INPUT_Edge == TIM_OPM_EDGE_RISING) |
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340 | { |
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341 | TIMx->CR1 |= TIM_OPM_EDGE_RISING; |
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342 | } |
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343 | |||
344 | /* Set the Output Compare Function */ |
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345 | TIMx->CR1 |= TIM_OC1_ENABLE_MASK; |
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346 | |||
347 | /* Set the One pulse mode */ |
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348 | TIMx->CR1 |= TIM_OPM_MASK; |
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349 | |||
350 | /* Set the Pulse length */ |
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351 | TIMx->OC1R = TIM_InitStruct->TIM_Pulse_Length_1; |
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352 | |||
353 | break; |
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354 | |||
355 | /*************************** Input capture channel 1 **************************/ |
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356 | |||
357 | case TIM_ICAP_CHANNEL_1: |
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358 | |||
359 | if (TIM_InitStruct->TIM_ICAP1_Edge == TIM_ICAP1_EDGE_RISING) |
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360 | { |
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361 | TIMx->CR1 |= TIM_ICAP1_EDGE_RISING; |
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362 | } |
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363 | else |
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364 | { |
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365 | TIMx->CR1 &= TIM_ICAP1_EDGE_FALLING; |
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366 | } |
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367 | |||
368 | break; |
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369 | |||
370 | /*************************** Input capture channel 2 **************************/ |
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371 | |||
372 | case TIM_ICAP_CHANNEL_2: |
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373 | |||
374 | if (TIM_InitStruct->TIM_ICAP2_Edge == TIM_ICAP2_EDGE_RISING) |
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375 | { |
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376 | TIMx->CR1 |= TIM_ICAP2_EDGE_RISING; |
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377 | } |
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378 | else |
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379 | { |
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380 | TIMx->CR1 &= TIM_ICAP2_EDGE_FALLING; |
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381 | } |
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382 | |||
383 | break; |
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384 | |||
385 | /************************* Input capture channel 1 & 2 ************************/ |
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386 | |||
387 | case TIM_ICAP_CHANNEL_12: |
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388 | if (TIM_InitStruct->TIM_ICAP2_Edge == TIM_ICAP2_EDGE_RISING) |
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389 | { |
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390 | TIMx->CR1 |= TIM_ICAP2_EDGE_RISING; |
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391 | } |
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392 | else |
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393 | { |
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394 | TIMx->CR1 &= TIM_ICAP2_EDGE_FALLING; |
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395 | } |
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396 | |||
397 | if (TIM_InitStruct->TIM_ICAP1_Edge == TIM_ICAP1_EDGE_RISING) |
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398 | { |
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399 | TIMx->CR1 |= TIM_ICAP1_EDGE_RISING; |
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400 | } |
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401 | else |
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402 | { |
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403 | TIMx->CR1 &= TIM_ICAP1_EDGE_FALLING; |
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404 | } |
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405 | |||
406 | break; |
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407 | |||
408 | default: |
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409 | break; |
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410 | } |
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411 | } |
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412 | |||
413 | /******************************************************************************* |
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414 | * Function Name : TIM_CounterCmd |
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415 | * Description : Enables or disables TIMx Counter peripheral. |
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416 | * Input1 : TIMx: where x can be from 0 to 3 to select the TIM |
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417 | * peripheral. |
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418 | * Input2 : TIM_operation: specifies the new state of the TIMx Counter. |
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419 | * This parameter can be one of the following values: |
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420 | * - TIM_START: Start the timer counter. |
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421 | * - TIM_STOP : Stop the timer counter. |
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422 | * - TIM_CLEAR: Clear the timer counter. |
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423 | * Output : None |
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424 | * Return : None |
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425 | *******************************************************************************/ |
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426 | void TIM_CounterCmd(TIM_TypeDef *TIMx, TIM_CounterOperations TIM_operation) |
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427 | { |
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428 | switch (TIM_operation) |
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429 | { |
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430 | case TIM_START: |
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431 | TIMx->CR1 |= TIM_ENABLE_MASK; |
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432 | break; |
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433 | |||
434 | case TIM_STOP: |
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435 | TIMx->CR1 &= TIM_DISABLE_MASK; |
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436 | break; |
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437 | |||
438 | case TIM_CLEAR: |
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439 | TIMx->CNTR = 0x1234; |
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440 | break; |
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441 | |||
442 | default: |
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443 | break; |
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444 | } |
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445 | } |
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446 | |||
447 | /******************************************************************************* |
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448 | * Function Name : TIM_PrescalerConfig |
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449 | * Description : This routine is used to configure the TIMx prescaler value |
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450 | * (when using the APB clock). |
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451 | * Input1 : TIMx: where x can be from 0 to 3 to select the TIM |
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452 | * peripheral. |
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453 | * Input2 : TIM_Prescaler: specifies the prescaler value. This parameter |
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454 | * can be a value from 0x0 to 0xFF. |
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455 | * Output : None |
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456 | * Return : None |
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457 | *******************************************************************************/ |
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458 | void TIM_PrescalerConfig(TIM_TypeDef *TIMx, u8 TIM_Prescaler) |
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459 | { |
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460 | TIMx->CR2 &= 0xFF00; |
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461 | TIMx->CR2 |= TIM_Prescaler; |
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462 | |||
463 | } |
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464 | /******************************************************************************* |
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465 | * Function Name : TIM_GetPrescalerValue |
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466 | * Description : This routine is used to get the TIMx prescaler value |
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467 | * (when using the APB clock). |
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468 | * Input : TIMx: where x can be from 0 to 3 to select the TIM |
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469 | * peripheral. |
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470 | * Output : None |
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471 | * Return : The prescaler value. |
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472 | *******************************************************************************/ |
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473 | u8 TIM_GetPrescalerValue(TIM_TypeDef *TIMx) |
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474 | { |
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475 | return TIMx->CR2 & 0x00FF; |
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476 | } |
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477 | |||
478 | /******************************************************************************* |
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479 | * Function Name : TIM_GetCounterValue |
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480 | * Description : This routine is used to get the TIMx counter value. |
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481 | * Input : TIMx: where x can be from 0 to 3 to select the TIM |
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482 | * peripheral. |
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483 | * Output : None |
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484 | * Return : The counter value. |
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485 | *******************************************************************************/ |
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486 | u16 TIM_GetCounterValue(TIM_TypeDef *TIMx) |
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487 | { |
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488 | return TIMx->CNTR; |
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489 | } |
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490 | |||
491 | /******************************************************************************* |
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492 | * Function Name : TIM_GetICAP1Value |
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493 | * Description : This routine is used to get the Input Capture 1 value. |
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494 | * Input : TIMx: where x can be from 0 to 3 to select the TIM |
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495 | * peripheral. |
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496 | * Output : None |
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497 | * Return : The Input Capture 1 value. |
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498 | *******************************************************************************/ |
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499 | u16 TIM_GetICAP1Value(TIM_TypeDef *TIMx) |
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500 | { |
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501 | return TIMx->IC1R; |
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502 | } |
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503 | |||
504 | /******************************************************************************* |
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505 | * Function Name : TIM_GetICAP2Value |
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506 | * Description : This routine is used to get the Input Capture 2 value. |
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507 | * Input : TIMx: where x can be from 0 to 3 to select the TIM |
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508 | * peripheral. |
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509 | * Output : None |
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510 | * Return : The Input Capture 2 value. |
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511 | *******************************************************************************/ |
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512 | u16 TIM_GetICAP2Value(TIM_TypeDef *TIMx) |
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513 | { |
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514 | return TIMx->IC2R; |
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515 | } |
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516 | |||
517 | /******************************************************************************* |
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518 | * Function Name : TIM_SetPulse |
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519 | * Description : This routine is used to set the pulse value. |
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520 | * Input1 : TIMx: where x can be from 0 to 3 to select the TIM |
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521 | * peripheral. |
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522 | * Input2 : TIM_Channel: specifies the needed channel. |
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523 | * This parameter can be one of the following values: |
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524 | * - TIM_PWM_OC1_Channel: PWM/Output Compare 1 Channel |
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525 | * - TIM_OC2_Channel : Output Compare 2 Channel |
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526 | * Input3 : TIM_Pulse: specifies the new pulse value. |
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527 | * Output : None |
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528 | * Return : None |
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529 | *******************************************************************************/ |
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530 | void TIM_SetPulse(TIM_TypeDef *TIMx,u16 TIM_Channel ,u16 TIM_Pulse) |
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531 | { |
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532 | if (TIM_Channel == TIM_PWM_OC1_Channel) |
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533 | { |
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534 | TIMx->OC1R = TIM_Pulse; |
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535 | } |
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536 | else |
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537 | { |
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538 | TIMx->OC2R = TIM_Pulse; |
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539 | } |
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540 | } |
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541 | /******************************************************************************* |
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542 | * Function Name : TIM_GetFlagStatus |
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543 | * Description : Checks whether the specified TIMx flag is set or not. |
||
544 | * Input1 : TIMx: where x can be from 0 to 3 to select the TIM |
||
545 | * peripheral. |
||
546 | * Input2 : TIM_Flag: specifies the flag to check. |
||
547 | * This parameter can be one of the following values: |
||
548 | * - TIM_FLAG_IC1: Input Capture Channel 1 Flag |
||
549 | * - TIM_FLAG_IC2: Input Capture Channel 2 Flag |
||
550 | * - TIM_FLAG_TO : Timer Overflow Flag |
||
551 | * - TIM_FLAG_OC1: Output Compare Channel 1 Flag |
||
552 | * - TIM_FLAG_OC2: Output Compare Channel 2 Flag |
||
553 | * Output : None |
||
554 | * Return : The NewState of the TIM_Flag (SET or RESET). |
||
555 | *******************************************************************************/ |
||
556 | FlagStatus TIM_GetFlagStatus(TIM_TypeDef *TIMx, u16 TIM_Flag) |
||
557 | { |
||
558 | if((TIMx->SR & TIM_Flag) == RESET) |
||
559 | { |
||
560 | return RESET; |
||
561 | } |
||
562 | else |
||
563 | { |
||
564 | return SET; |
||
565 | } |
||
566 | } |
||
567 | |||
568 | /******************************************************************************* |
||
569 | * Function Name : TIM_ClearFlag |
||
570 | * Description : Clears the TIM Flag passed as a parameter. |
||
571 | * Input1 : TIMx: where x can be from 0 to 3 to select the TIM |
||
572 | * peripheral. |
||
573 | * Input2 : TIM_Flag: specifies the flag to clear. |
||
574 | * This parameter can be one of the following values: |
||
575 | * - TIM_FLAG_IC1: Input Capture Channel 1 Flag |
||
576 | * - TIM_FLAG_IC2: Input Capture Channel 2 Flag |
||
577 | * - TIM_FLAG_TO : Timer Overflow Flag |
||
578 | * - TIM_FLAG_OC1: Output Compare Channel 1 Flag |
||
579 | * - TIM_FLAG_OC2: Output Compare Channel 2 Flag |
||
580 | * Output : None |
||
581 | * Return : None |
||
582 | *******************************************************************************/ |
||
583 | void TIM_ClearFlag(TIM_TypeDef *TIMx, u16 TIM_Flag) |
||
584 | { |
||
585 | /* Clear TIM_Flag */ |
||
586 | TIMx->SR &= ~TIM_Flag; |
||
587 | } |
||
588 | |||
589 | /******************************************************************************* |
||
590 | * Function Name : TIM_GetPWMIPulse |
||
591 | * Description : This routine is used to get the Pulse value in PWMI Mode. |
||
592 | * Input : TIMx: where x can be from 0 to 3 to select the TIM |
||
593 | * peripheral. |
||
594 | * Output : None |
||
595 | * Return : The pulse value. |
||
596 | *******************************************************************************/ |
||
597 | u16 TIM_GetPWMIPulse(TIM_TypeDef *TIMx) |
||
598 | { |
||
599 | return TIMx->IC2R; |
||
600 | } |
||
601 | |||
602 | /******************************************************************************* |
||
603 | * Function Name : TIM_GetPWMIPeriod |
||
604 | * Description : This routine is used to get the Period value in PWMI Mode. |
||
605 | * Input : TIMx: where x can be from 0 to 3 to select the TIM |
||
606 | * peripheral. |
||
607 | * Output : None |
||
608 | * Return : The period value. |
||
609 | *******************************************************************************/ |
||
610 | u16 TIM_GetPWMIPeriod(TIM_TypeDef *TIMx) |
||
611 | { |
||
612 | return TIMx->IC1R; |
||
613 | } |
||
614 | |||
615 | /******************************************************************************* |
||
616 | * Function Name : TIM_ITConfig |
||
617 | * Description : Configures the Timer interrupt source. |
||
618 | * Input1 : TIMx: where x can be from 0 to 3 to select the TIM |
||
619 | * peripheral. |
||
620 | * Input2 : TIM_IT: specifies the TIM interrupt source to be enabled. |
||
621 | * This parameter can be one of the following values: |
||
622 | * - TIM_IT_IC1: Input Capture 1 Interrupt source. |
||
623 | * - TIM_IT_OC1: Output Compare 1 Interrupt source. |
||
624 | * - TIM_IT_TO : Timer Overflow Interrupt source. |
||
625 | * - TIM_IT_IC2: Input Capture 2 Interrupt source. |
||
626 | * - TIM_IT_OC2: Output Compare 2 Interrupt source. |
||
627 | * Input3 : TIM_Newstate: specifies the new state of the TIMx IT. |
||
628 | * This parameter can be one of the following values: |
||
629 | * - ENABLE : Enable the needed interrupt. |
||
630 | * - DISABLE: Disable the needed interrupt. |
||
631 | * Output : None |
||
632 | * Return : None |
||
633 | *******************************************************************************/ |
||
634 | void TIM_ITConfig(TIM_TypeDef *TIMx, u16 TIM_IT, FunctionalState TIM_Newstate) |
||
635 | { |
||
636 | if(TIM_Newstate == ENABLE) |
||
637 | { |
||
638 | TIMx->CR2 = (TIMx->CR2 & 0x00FF) | TIM_IT; |
||
639 | } |
||
640 | else |
||
641 | { |
||
642 | TIMx->CR2 &= ~TIM_IT; |
||
643 | } |
||
644 | } |
||
645 | |||
646 | /******************************************************************************* |
||
647 | * Function Name : TIM_DMAConfig |
||
648 | * Description : Configures the Timer DMA source. |
||
649 | * Input1 : TIMx: where x can be from 0 to 3 to select the TIM |
||
650 | * peripheral. |
||
651 | * Input2 : TIM_DMA_Souces: specifies the TIM DMA source to be selected. |
||
652 | * This parameter can be one of the following values: |
||
653 | * - TIM_DMA_IC1: Input Capture 1 DMA source. |
||
654 | * - TIM_DMA_OCA1 Output Compare 1 DMA source. |
||
655 | * - TIM_DMA_TO: Timer Overflow DMA source. |
||
656 | * - TIM_DMA_IC2: Input Capture 2 DMA source. |
||
657 | * - TIM_DMA_OC2: Output Compare 2 DMA source. |
||
658 | * Output : None |
||
659 | * Return : None |
||
660 | *******************************************************************************/ |
||
661 | void TIM_DMAConfig(TIM_TypeDef *TIMx, u16 TIM_DMA_Sources) |
||
662 | { |
||
663 | /* Reset the DMAS[1:0] bits */ |
||
664 | TIMx->CR1 &= TIM_DMA_CLEAR_MASK; |
||
665 | /* Set the DMAS[1:0] bits according to TIM_DMA_Sources parameter */ |
||
666 | TIMx->CR1 |= TIM_DMA_Sources; |
||
667 | } |
||
668 | |||
669 | /******************************************************************************* |
||
670 | * Function Name : TIM_DMACmd |
||
671 | * Description : Enables or disables TIMx DMA peripheral. |
||
672 | * Input1 : TIMx: where x can be from 0 to 3 to select the TIM |
||
673 | * peripheral. |
||
674 | * Input2 : TIM_Newstate: new state of the TIMx DMA peripheral |
||
675 | * This parameter can be one of the following values: |
||
676 | * - ENABLE : Enable the TIMx DMA. |
||
677 | * - DISABLE: Disable the TIMx DMA. |
||
678 | * Output : None |
||
679 | * Return : None |
||
680 | *******************************************************************************/ |
||
681 | void TIM_DMACmd(TIM_TypeDef *TIMx, FunctionalState TIM_Newstate) |
||
682 | { |
||
683 | if (TIM_Newstate == ENABLE) |
||
684 | { |
||
685 | TIMx->CR2 |= TIM_DMA_ENABLE; |
||
686 | } |
||
687 | else |
||
688 | { |
||
689 | TIMx->CR2 &= TIM_DMA_DISABLE; |
||
690 | } |
||
691 | } |
||
692 | /******************* (C) COPYRIGHT 2006 STMicroelectronics *****END OF FILE****/ |