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annotate libs/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/TIM/TIM15_ComplementarySignals/main.c @ 8:58d76cf522ff

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Split out code into separate files.
author Daniel O'Connor <darius@dons.net.au>
date Sat, 04 Feb 2012 13:29:31 +1030
parents c59513fd84fb
children
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1 /**
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2 ******************************************************************************
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3 * @file TIM/TIM15_ComplementarySignals/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>&copy; 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
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25 /** @addtogroup STM32F10x_StdPeriph_Examples
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26 * @{
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27 */
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28
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29 /** @addtogroup TIM15_ComplementarySignals
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30 * @{
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31 */
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32
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33 /* Private typedef -----------------------------------------------------------*/
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34 /* Private define ------------------------------------------------------------*/
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35 /* Private macro -------------------------------------------------------------*/
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36 /* Private variables ---------------------------------------------------------*/
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37 TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
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38 TIM_OCInitTypeDef TIM_OCInitStructure;
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39 TIM_BDTRInitTypeDef TIM_BDTRInitStructure;
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40 uint16_t CCR1_Val = 32767;
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41
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42 /* Private function prototypes -----------------------------------------------*/
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43 void RCC_Configuration(void);
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44 void GPIO_Configuration(void);
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45
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46 /* Private functions ---------------------------------------------------------*/
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47
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48 /**
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49 * @brief Main program
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50 * @param None
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51 * @retval None
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52 */
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53 int main(void)
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54 {
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55 /*!< At this stage the microcontroller clock setting is already configured,
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56 this is done through SystemInit() function which is called from startup
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57 file (startup_stm32f10x_xx.s) before to branch to application main.
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58 To reconfigure the default setting of SystemInit() function, refer to
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59 system_stm32f10x.c file
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60 */
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61
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62 /* System Clocks Configuration */
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63 RCC_Configuration();
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64
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65 /* GPIO Configuration */
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66 GPIO_Configuration();
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67
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68 /* -----------------------------------------------------------------------
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69 TIM15 Configuration to:
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70
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71 1/ Generate a complementary PWM signals with 50% duty cycles:
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72 TIM15CLK = 24 MHz, Prescaler = 0, TIM15 counter clock = 24 MHz
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73 TIM15 frequency = TIM15CLK/(TIM15_Period + 1) = 366 Hz
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74
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75 TIM15 Channel1 duty cycle = TIM15->CCR1 / TIM15_Period = 50%
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76 TIM15 Channel1N duty cycle = (TIM15_Period - TIM15_CCR1) / (TIM15_Period + 1) = 50%
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77
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78 2/ Insert a dead time equal to 1.62 us
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79 3/ Configure the break feature, active at High level, and using the automatic
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80 output enable feature
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81 4/ Use the Locking parameters level1.
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82 ----------------------------------------------------------------------- */
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83
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84 /* Time Base configuration */
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85 TIM_TimeBaseStructure.TIM_Prescaler = 0;
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86 TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
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87 TIM_TimeBaseStructure.TIM_Period = 65535;
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88 TIM_TimeBaseStructure.TIM_ClockDivision = 0;
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89 TIM_TimeBaseStructure.TIM_RepetitionCounter = 0;
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90
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91 TIM_TimeBaseInit(TIM15, &TIM_TimeBaseStructure);
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92
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93 /* Channel 1 Configuration in PWM mode */
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94 TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM2;
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95 TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
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96 TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable;
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97 TIM_OCInitStructure.TIM_Pulse = CCR1_Val;
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98 TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low;
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99 TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_Low;
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100 TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Set;
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101 TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCIdleState_Reset;
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102
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103 TIM_OC1Init(TIM15, &TIM_OCInitStructure);
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104
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105 /* Automatic Output enable, Break, dead time and lock configuration*/
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106 TIM_BDTRInitStructure.TIM_OSSRState = TIM_OSSRState_Enable;
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107 TIM_BDTRInitStructure.TIM_OSSIState = TIM_OSSIState_Enable;
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108 TIM_BDTRInitStructure.TIM_LOCKLevel = TIM_LOCKLevel_1;
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109 TIM_BDTRInitStructure.TIM_DeadTime = 39;
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110 TIM_BDTRInitStructure.TIM_Break = TIM_Break_Enable;
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111 TIM_BDTRInitStructure.TIM_BreakPolarity = TIM_BreakPolarity_High;
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112 TIM_BDTRInitStructure.TIM_AutomaticOutput = TIM_AutomaticOutput_Enable;
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113
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114 TIM_BDTRConfig(TIM15, &TIM_BDTRInitStructure);
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115
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116 /* TIM15 counter enable */
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117 TIM_Cmd(TIM15, ENABLE);
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118
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119 /* Main Output Enable */
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120 TIM_CtrlPWMOutputs(TIM15, ENABLE);
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121
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122 while (1)
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123 {
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124 }
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125 }
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126
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127 /**
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128 * @brief Configures the different system clocks.
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129 * @param None
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130 * @retval None
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131 */
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132 void RCC_Configuration(void)
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133 {
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134 /* TIM15, GPIOA, GPIOB and AFIO clocks enable */
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135 RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM15 | RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB
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136 | RCC_APB2Periph_AFIO, ENABLE);
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137 }
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138
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139 /**
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140 * @brief Configure the TIM1 Pins.
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141 * @param None
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142 * @retval None
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143 */
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144 void GPIO_Configuration(void)
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145 {
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146 GPIO_InitTypeDef GPIO_InitStructure;
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147
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148 /* GPIOA Configuration: Channel 1 as alternate function push-pull */
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149 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
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150 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
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151 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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152 GPIO_Init(GPIOA, &GPIO_InitStructure);
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153
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154 /* GPIOB Configuration: Channel 1N as alternate function push-pull */
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155 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_15;
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156 GPIO_Init(GPIOB, &GPIO_InitStructure);
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157
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158 /* GPIOA Configuration: BKIN pin */
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159 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
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160 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
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161 GPIO_Init(GPIOB, &GPIO_InitStructure);
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162 }
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163
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164 #ifdef USE_FULL_ASSERT
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165
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166 /**
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167 * @brief Reports the name of the source file and the source line number
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168 * where the assert_param error has occurred.
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169 * @param file: pointer to the source file name
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170 * @param line: assert_param error line source number
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171 * @retval None
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172 */
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173 void assert_failed(uint8_t* file, uint32_t line)
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174 {
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175 /* User can add his own implementation to report the file name and line number,
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176 ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
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177
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178 while (1)
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179 {}
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180 }
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181
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182 #endif
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183
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184 /**
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185 * @}
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186 */
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187
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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 /******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/