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annotate libs/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/NVIC/IRQ_Mask/main.c @ 0:c59513fd84fb
Initial commit of STM32 test code.
author | Daniel O'Connor <darius@dons.net.au> |
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date | Mon, 03 Oct 2011 21:19:15 +1030 |
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1 /** |
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2 ****************************************************************************** |
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3 * @file NVIC/IRQ_Mask/main.c |
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4 * @author MCD Application Team |
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5 * @version V3.5.0 |
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6 * @date 08-April-2011 |
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7 * @brief Main program body |
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8 ****************************************************************************** |
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9 * @attention |
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10 * |
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11 * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS |
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12 * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE |
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13 * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY |
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14 * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING |
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15 * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE |
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16 * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS. |
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17 * |
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18 * <h2><center>© COPYRIGHT 2011 STMicroelectronics</center></h2> |
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19 ****************************************************************************** |
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20 */ |
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21 |
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22 /* Includes ------------------------------------------------------------------*/ |
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23 #include "stm32f10x.h" |
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24 #include "stm32_eval.h" |
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25 |
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26 /** @addtogroup STM32F10x_StdPeriph_Examples |
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27 * @{ |
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28 */ |
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29 |
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30 /** @addtogroup IRQ_Mask |
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31 * @{ |
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32 */ |
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33 |
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34 /* Private typedef -----------------------------------------------------------*/ |
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35 /* Private define ------------------------------------------------------------*/ |
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36 /* Private macro -------------------------------------------------------------*/ |
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37 /* Private variables ---------------------------------------------------------*/ |
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38 /* Private function prototypes -----------------------------------------------*/ |
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39 void TIM_Config(void); |
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40 |
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41 /* Private functions ---------------------------------------------------------*/ |
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42 |
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43 /** |
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44 * @brief Main program. |
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45 * @param None |
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46 * @retval None |
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47 */ |
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48 int main(void) |
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49 { |
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50 /*!< At this stage the microcontroller clock setting is already configured, |
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51 this is done through SystemInit() function which is called from startup |
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52 file (startup_stm32f10x_xx.s) before to branch to application main. |
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53 To reconfigure the default setting of SystemInit() function, refer to |
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54 system_stm32f10x.c file |
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55 */ |
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56 |
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57 /* Initialize Leds mounted on STM3210X-EVAL board */ |
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58 STM_EVAL_LEDInit(LED1); |
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59 STM_EVAL_LEDInit(LED2); |
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60 STM_EVAL_LEDInit(LED3); |
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61 STM_EVAL_LEDInit(LED4); |
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62 |
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63 /* Initialize the KEY and WAKEUP buttons mounted on STM3210X-EVAL board */ |
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64 STM_EVAL_PBInit(BUTTON_KEY, BUTTON_MODE_GPIO); |
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65 STM_EVAL_PBInit(BUTTON_WAKEUP, BUTTON_MODE_EXTI); |
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66 |
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67 /* TIM configuration -------------------------------------------------------*/ |
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68 TIM_Config(); |
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69 |
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70 while (1) |
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71 { |
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72 /* Wait until KEY button is pressed. */ |
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73 while(STM_EVAL_PBGetState(BUTTON_KEY) == RESET) |
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74 { |
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75 } |
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76 while(STM_EVAL_PBGetState(BUTTON_KEY) != RESET) |
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77 { |
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78 } |
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79 |
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80 /* This instruction raises the execution priority to 0. This prevents all |
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81 exceptions with configurable priority from activating, other than through |
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82 the HardFault fault escalation mechanism. */ |
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83 __disable_irq(); |
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84 |
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85 /* Turn LED4 ON */ |
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86 STM_EVAL_LEDOn(LED4); |
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87 |
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88 /* Wait until KEY button is pressed. */ |
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89 while(STM_EVAL_PBGetState(BUTTON_KEY) == RESET) |
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90 { |
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91 } |
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92 while(STM_EVAL_PBGetState(BUTTON_KEY) != RESET) |
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93 { |
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94 } |
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95 |
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96 /* This instruction will allow all exceptions with configurable priority to |
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97 be activated. */ |
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98 __enable_irq(); |
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99 |
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100 /* Turn LED4 OFF */ |
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101 STM_EVAL_LEDOff(LED4); |
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102 } |
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103 } |
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104 |
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105 /** |
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106 * @brief Configures the used Timers. |
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107 * @param None |
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108 * @retval None |
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109 */ |
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110 void TIM_Config(void) |
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111 { |
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112 TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure; |
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113 TIM_OCInitTypeDef TIM_OCInitStructure; |
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114 NVIC_InitTypeDef NVIC_InitStructure; |
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115 |
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116 /* Enable TIM2, TIM3 and TIM4 clocks */ |
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117 RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2 | RCC_APB1Periph_TIM3 | |
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118 RCC_APB1Periph_TIM4, ENABLE); |
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119 |
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120 /* TIM2 configuration */ |
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121 TIM_TimeBaseStructure.TIM_Period = 0x4AF; |
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122 TIM_TimeBaseStructure.TIM_Prescaler = ((SystemCoreClock/1200) - 1); |
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123 TIM_TimeBaseStructure.TIM_ClockDivision = 0x0; |
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124 TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; |
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125 TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure); |
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126 TIM_OCStructInit(&TIM_OCInitStructure); |
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127 |
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128 /* Output Compare Timing Mode configuration: Channel1 */ |
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129 TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_Timing; |
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130 TIM_OCInitStructure.TIM_Pulse = 0x0; |
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131 TIM_OC1Init(TIM2, &TIM_OCInitStructure); |
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132 |
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133 /* TIM3 configuration */ |
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134 TIM_TimeBaseStructure.TIM_Period = 0x95F; |
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135 TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure); |
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136 |
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137 /* Output Compare Timing Mode configuration: Channel1 */ |
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138 TIM_OC1Init(TIM3, &TIM_OCInitStructure); |
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139 |
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140 /* TIM4 configuration */ |
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141 TIM_TimeBaseStructure.TIM_Period = 0xE0F; |
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142 TIM_TimeBaseInit(TIM4, &TIM_TimeBaseStructure); |
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143 |
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144 /* Output Compare Timing Mode configuration: Channel1 */ |
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145 TIM_OC1Init(TIM4, &TIM_OCInitStructure); |
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146 |
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147 /* Immediate load of TIM2,TIM3 and TIM4 Precaler values */ |
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148 TIM_PrescalerConfig(TIM2, ((SystemCoreClock/1200) - 1), TIM_PSCReloadMode_Immediate); |
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149 TIM_PrescalerConfig(TIM3, ((SystemCoreClock/1200) - 1), TIM_PSCReloadMode_Immediate); |
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150 TIM_PrescalerConfig(TIM4, ((SystemCoreClock/1200) - 1), TIM_PSCReloadMode_Immediate); |
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151 |
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152 /* Clear TIM2, TIM3 and TIM4 update pending flags */ |
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153 TIM_ClearFlag(TIM2, TIM_FLAG_Update); |
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154 TIM_ClearFlag(TIM3, TIM_FLAG_Update); |
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155 TIM_ClearFlag(TIM4, TIM_FLAG_Update); |
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156 |
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157 /* Configure two bits for preemption priority */ |
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158 NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2); |
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159 |
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160 /* Enable the TIM2 Interrupt */ |
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161 NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQn; |
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162 NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; |
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163 NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; |
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164 NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; |
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165 NVIC_Init(&NVIC_InitStructure); |
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166 |
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167 /* Enable the TIM3 Interrupt */ |
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168 NVIC_InitStructure.NVIC_IRQChannel = TIM3_IRQn; |
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169 NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1; |
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170 NVIC_Init(&NVIC_InitStructure); |
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171 |
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172 /* Enable the TIM4 Interrupt */ |
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173 NVIC_InitStructure.NVIC_IRQChannel = TIM4_IRQn; |
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174 NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2; |
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175 NVIC_Init(&NVIC_InitStructure); |
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176 |
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177 /* Enable TIM2, TIM3 and TIM4 Update interrupts */ |
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178 TIM_ITConfig(TIM2, TIM_IT_Update, ENABLE); |
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179 TIM_ITConfig(TIM3, TIM_IT_Update, ENABLE); |
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180 TIM_ITConfig(TIM4, TIM_IT_Update, ENABLE); |
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181 |
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182 /* TIM2, TIM3 and TIM4 enable counters */ |
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183 TIM_Cmd(TIM2, ENABLE); |
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184 TIM_Cmd(TIM3, ENABLE); |
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185 TIM_Cmd(TIM4, ENABLE); |
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186 } |
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187 |
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188 |
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189 #ifdef USE_FULL_ASSERT |
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190 |
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191 /** |
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192 * @brief Reports the name of the source file and the source line number |
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193 * where the assert_param error has occurred. |
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194 * @param file: pointer to the source file name |
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195 * @param line: assert_param error line source number |
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196 * @retval None |
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197 */ |
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198 void assert_failed(uint8_t* file, uint32_t line) |
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199 { |
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200 /* User can add his own implementation to report the file name and line number, |
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201 ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */ |
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202 |
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203 /* Infinite loop */ |
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204 while (1) |
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205 { |
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206 } |
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207 } |
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208 |
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209 #endif |
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210 |
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211 /** |
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212 * @} |
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213 */ |
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214 |
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215 /** |
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216 * @} |
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217 */ |
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218 |
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219 /******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/ |