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annotate libs/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/TIM/6Steps/main.c @ 85:18b154c447bb

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Add note about 1-wire wiring
author Daniel O'Connor <darius@dons.net.au>
date Thu, 12 Mar 2015 23:22:11 +1030
parents c59513fd84fb
children
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1 /**
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2 ******************************************************************************
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3 * @file TIM/6Steps/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 TIM_6Steps
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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 uint16_t CCR2_Val = 24575;
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42 uint16_t CCR3_Val = 16383;
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43 uint16_t CCR4_Val = 8191;
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44
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45 /* Private function prototypes -----------------------------------------------*/
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46 void RCC_Configuration(void);
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47 void GPIO_Configuration(void);
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48 void SysTick_Configuration(void);
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49 void NVIC_Configuration(void);
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50
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51 /* Private functions ---------------------------------------------------------*/
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52
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53 /**
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54 * @brief Main program
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55 * @param None
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56 * @retval None
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57 */
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58 int main(void)
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59 {
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60 /*!< At this stage the microcontroller clock setting is already configured,
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61 this is done through SystemInit() function which is called from startup
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62 file (startup_stm32f10x_xx.s) before to branch to application main.
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63 To reconfigure the default setting of SystemInit() function, refer to
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64 system_stm32f10x.c file
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65 */
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66
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67 /* System Clocks Configuration */
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68 RCC_Configuration();
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69
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70 /* NVIC Configuration */
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71 NVIC_Configuration();
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72
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73 /* GPIO Configuration */
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74 GPIO_Configuration();
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75
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76 /* SysTick Configuration */
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77 SysTick_Configuration();
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78
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79 /*-----------------------------------------------------------------------------
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80 The STM32F10x TIM1 peripheral offers the possibility to program in advance the
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81 configuration for the next TIM1 outputs behaviour (step) and change the configuration
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82 of all the channels at the same time. This operation is possible when the COM
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83 (commutation) event is used.
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84 The COM event can be generated by software by setting the COM bit in the TIM1_EGR
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85 register or by hardware (on TRC rising edge).
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86 In this example, a software COM event is generated each 100 ms: using the Systick
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87 interrupt.
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88 The TIM1 is configured in Timing Mode, each time a COM event occurs,
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89 a new TIM1 configuration will be set in advance.
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90 The following Table describes the TIM1 Channels states:
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91 -----------------------------------------------
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92 | Step1 | Step2 | Step3 | Step4 | Step5 | Step6 |
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93 ----------------------------------------------------------
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94 |Channel1 | 1 | 0 | 0 | 0 | 0 | 1 |
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95 ----------------------------------------------------------
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96 |Channel1N | 0 | 0 | 1 | 1 | 0 | 0 |
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97 ----------------------------------------------------------
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98 |Channel2 | 0 | 0 | 0 | 1 | 1 | 0 |
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99 ----------------------------------------------------------
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100 |Channel2N | 1 | 1 | 0 | 0 | 0 | 0 |
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101 ----------------------------------------------------------
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102 |Channel3 | 0 | 1 | 1 | 0 | 0 | 0 |
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103 ----------------------------------------------------------
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104 |Channel3N | 0 | 0 | 0 | 0 | 1 | 1 |
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105 ----------------------------------------------------------
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106 -----------------------------------------------------------------------------*/
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107
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108 /* Time Base configuration */
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109 TIM_TimeBaseStructure.TIM_Prescaler = 0;
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110 TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
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111 TIM_TimeBaseStructure.TIM_Period = 4095;
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112 TIM_TimeBaseStructure.TIM_ClockDivision = 0;
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113 TIM_TimeBaseStructure.TIM_RepetitionCounter = 0;
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114
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115 TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure);
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116
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117 /* Channel 1, 2,3 and 4 Configuration in PWM mode */
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118 TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_Timing;
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119 TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
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120 TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable;
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121 TIM_OCInitStructure.TIM_Pulse = 2047;
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122 TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
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123 TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_High;
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124 TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Set;
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125 TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCNIdleState_Set;
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126
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127 TIM_OC1Init(TIM1, &TIM_OCInitStructure);
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128
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129 TIM_OCInitStructure.TIM_Pulse = 1023;
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130 TIM_OC2Init(TIM1, &TIM_OCInitStructure);
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131
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132 TIM_OCInitStructure.TIM_Pulse = 511;
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133 TIM_OC3Init(TIM1, &TIM_OCInitStructure);
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134
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135 /* Automatic Output enable, Break, dead time and lock configuration*/
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136 TIM_BDTRInitStructure.TIM_OSSRState = TIM_OSSRState_Enable;
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137 TIM_BDTRInitStructure.TIM_OSSIState = TIM_OSSIState_Enable;
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138 TIM_BDTRInitStructure.TIM_LOCKLevel = TIM_LOCKLevel_OFF;
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139 TIM_BDTRInitStructure.TIM_DeadTime = 1;
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140 TIM_BDTRInitStructure.TIM_Break = TIM_Break_Enable;
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141 TIM_BDTRInitStructure.TIM_BreakPolarity = TIM_BreakPolarity_High;
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142 TIM_BDTRInitStructure.TIM_AutomaticOutput = TIM_AutomaticOutput_Enable;
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143
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144 TIM_BDTRConfig(TIM1, &TIM_BDTRInitStructure);
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145
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146 TIM_CCPreloadControl(TIM1, ENABLE);
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147
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148 TIM_ITConfig(TIM1, TIM_IT_COM, ENABLE);
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149
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150 /* TIM1 counter enable */
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151 TIM_Cmd(TIM1, ENABLE);
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152
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153 /* Main Output Enable */
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154 TIM_CtrlPWMOutputs(TIM1, ENABLE);
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155
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156 while (1)
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157 {}
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158 }
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159
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160 /**
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161 * @brief Configures the different system clocks.
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162 * @param None
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163 * @retval None
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164 */
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165 void RCC_Configuration(void)
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166 {
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167 /* TIM1, GPIOA, GPIOB, GPIOE and AFIO clocks enable */
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168 RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1 | RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOE|
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169 RCC_APB2Periph_GPIOB |RCC_APB2Periph_AFIO, ENABLE);
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170 }
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171
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172 /**
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173 * @brief Configure the TIM1 Pins.
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174 * @param None
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175 * @retval None
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176 */
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177 void GPIO_Configuration(void)
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178 {
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179 GPIO_InitTypeDef GPIO_InitStructure;
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180
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181 #ifdef STM32F10X_CL
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182 /* GPIOE Configuration: Channel 1/1N, 2/2N, 3/3N as alternate function push-pull */
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183 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9|GPIO_Pin_11|GPIO_Pin_13|
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184 GPIO_Pin_8|GPIO_Pin_10|GPIO_Pin_12;
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185 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
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186 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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187
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188 GPIO_Init(GPIOE, &GPIO_InitStructure);
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189
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190 /* GPIOE Configuration: BKIN pin */
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191 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_15;
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192 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
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193 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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194
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195 GPIO_Init(GPIOE, &GPIO_InitStructure);
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196
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197 /* TIM1 Full remapping pins */
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198 GPIO_PinRemapConfig(GPIO_FullRemap_TIM1, ENABLE);
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199
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200 #else
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201 /* GPIOA Configuration: Channel 1, 2 and 3 as alternate function push-pull */
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202 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10;
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203 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
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204 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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205 GPIO_Init(GPIOA, &GPIO_InitStructure);
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206
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207 /* GPIOB Configuration: Channel 1N, 2N and 3N as alternate function push-pull */
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208 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13 | GPIO_Pin_14 | GPIO_Pin_15;
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209 GPIO_Init(GPIOB, &GPIO_InitStructure);
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210
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211 /* GPIOB Configuration: BKIN pin */
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212 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;
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213 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
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214 GPIO_Init(GPIOB, &GPIO_InitStructure);
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215 #endif
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216 }
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217
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218 /**
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219 * @brief Configures the SysTick.
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220 * @param None
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221 * @retval None
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222 */
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223 void SysTick_Configuration(void)
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224 {
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225 /* Setup SysTick Timer for 100 msec interrupts */
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226 if (SysTick_Config((SystemCoreClock) / 10))
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227 {
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228 /* Capture error */
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229 while (1);
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230 }
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231
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232 NVIC_SetPriority(SysTick_IRQn, 0x0);
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233 }
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234
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235 /**
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236 * @brief Configures the nested vectored interrupt controller.
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237 * @param None
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238 * @retval None
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239 */
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240 void NVIC_Configuration(void)
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241 {
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242 NVIC_InitTypeDef NVIC_InitStructure;
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243
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244 /* Enable the TIM1 Interrupt */
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245 #if defined (STM32F10X_LD_VL) || defined (STM32F10X_MD_VL) || defined (STM32F10X_HD_VL)
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246 NVIC_InitStructure.NVIC_IRQChannel = TIM1_TRG_COM_TIM17_IRQn;
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247 #else
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248 NVIC_InitStructure.NVIC_IRQChannel = TIM1_TRG_COM_IRQn;
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249 #endif
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250 NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
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251 NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
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252 NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
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253 NVIC_Init(&NVIC_InitStructure);
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254
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255 }
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256
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257 #ifdef USE_FULL_ASSERT
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258
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259 /**
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260 * @brief Reports the name of the source file and the source line number
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261 * where the assert_param error has occurred.
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262 * @param file: pointer to the source file name
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263 * @param line: assert_param error line source number
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264 * @retval None
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265 */
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266 void assert_failed(uint8_t* file, uint32_t line)
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267 {
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268 /* User can add his own implementation to report the file name and line number,
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269 ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
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270
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271 while (1)
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272 {}
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273 }
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274
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275 #endif
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276 /**
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277 * @}
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278 */
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279
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280 /**
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281 * @}
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282 */
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283
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284 /******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/