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annotate libs/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/DMA/ADC_TIM1/main.c @ 0:c59513fd84fb

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Initial commit of STM32 test code.
author Daniel O'Connor <darius@dons.net.au>
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 DMA/ADC_TIM1/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 DMA_ADC_TIM1
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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 #define ADC1_DR_Address 0x4001244C
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36 #define TIM1_CCR1_Address 0x40012C34
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37
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38 /* Private macro -------------------------------------------------------------*/
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39 /* Private variables ---------------------------------------------------------*/
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40 ADC_InitTypeDef ADC_InitStructure;
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41 TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
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42 TIM_OCInitTypeDef TIM_OCInitStructure;
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43 DMA_InitTypeDef DMA_InitStructure;
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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
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49 /* Private functions ---------------------------------------------------------*/
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50
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51 /**
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52 * @brief Main program
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53 * @param None
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54 * @retval None
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55 */
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56 int main(void)
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57 {
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58 /*!< At this stage the microcontroller clock setting is already configured,
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59 this is done through SystemInit() function which is called from startup
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60 file (startup_stm32f10x_xx.s) before to branch to application main.
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61 To reconfigure the default setting of SystemInit() function, refer to
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62 system_stm32f10x.c file
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63 */
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64
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65 /* System Clocks Configuration */
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66 RCC_Configuration();
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67
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68 /* Configure the GPIO ports */
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69 GPIO_Configuration();
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70
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71 /* DMA1 Channel5 configuration ----------------------------------------------*/
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72 DMA_DeInit(DMA1_Channel5);
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73 DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)TIM1_CCR1_Address;
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74 DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)ADC1_DR_Address;
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75 DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralDST;
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76 DMA_InitStructure.DMA_BufferSize = 1;
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77 DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
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78 DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Disable;
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79 DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;
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80 DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;
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81 DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;
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82 DMA_InitStructure.DMA_Priority = DMA_Priority_High;
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83 DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
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84 DMA_Init(DMA1_Channel5, &DMA_InitStructure);
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85 /* Enable DMA1 Channel5 */
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86 DMA_Cmd(DMA1_Channel5, ENABLE);
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87
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88 /* ADC1 configuration ------------------------------------------------------*/
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89 ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;
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90 ADC_InitStructure.ADC_ScanConvMode = DISABLE;
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91 ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
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92 ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;
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93 ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
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94 ADC_InitStructure.ADC_NbrOfChannel = 1;
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95 ADC_Init(ADC1, &ADC_InitStructure);
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96
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97 /* ADC1 RegularChannelConfig Test */
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98 ADC_RegularChannelConfig(ADC1, ADC_Channel_14, 1, ADC_SampleTime_55Cycles5);
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99
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100 /* TIM1 configuration ------------------------------------------------------*/
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101 /* Time Base configuration */
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102 TIM_TimeBaseStructInit(&TIM_TimeBaseStructure);
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103 TIM_TimeBaseStructure.TIM_Period = 0xFF0;
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104 TIM_TimeBaseStructure.TIM_Prescaler = 0x0;
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105 TIM_TimeBaseStructure.TIM_ClockDivision = 0x0;
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106 TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
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107 TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure);
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108 /* Channel1 Configuration in PWM mode */
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109 TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
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110 TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
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111 TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
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112 TIM_OC1Init(TIM1, &TIM_OCInitStructure);
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113
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114 /* Enable TIM1 */
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115 TIM_Cmd(TIM1, ENABLE);
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116 /* Enable TIM1 outputs */
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117 TIM_CtrlPWMOutputs(TIM1, ENABLE);
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118
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119 /* Enable TIM1 DMA interface */
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120 TIM_DMACmd(TIM1, TIM_DMA_Update, ENABLE);
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121
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122 /* Enable ADC1 */
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123 ADC_Cmd(ADC1, ENABLE);
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124
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125 /* Enable ADC1 reset calibration register */
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126 ADC_ResetCalibration(ADC1);
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127 /* Check the end of ADC1 reset calibration register */
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128 while(ADC_GetResetCalibrationStatus(ADC1));
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129
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130 /* Start ADC1 calibration */
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131 ADC_StartCalibration(ADC1);
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132 /* Check the end of ADC1 calibration */
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133 while(ADC_GetCalibrationStatus(ADC1));
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134
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135 /* Start ADC1 conversion */
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136 ADC_SoftwareStartConvCmd(ADC1, ENABLE);
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137
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138 while (1)
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139 {
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140 }
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141 }
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142
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143 /**
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144 * @brief Configures the different system clocks.
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145 * @param None
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146 * @retval None
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147 */
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148 void RCC_Configuration(void)
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149 {
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150 /* ADCCLK = PCLK2/8 */
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151 RCC_ADCCLKConfig(RCC_PCLK2_Div8);
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152
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153 /* Enable peripheral clocks ------------------------------------------------*/
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154 /* Enable DMA1 clock */
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155 RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);
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156 /* Enable GPIOA, GPIOC, ADC1 and TIM1 Periph clock */
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157 RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOC |
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158 RCC_APB2Periph_ADC1 | RCC_APB2Periph_TIM1, ENABLE);
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159 }
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160
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161 /**
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162 * @brief Configures the different GPIO ports.
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163 * @param None
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164 * @retval None
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165 */
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166 void GPIO_Configuration(void)
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167 {
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168 GPIO_InitTypeDef GPIO_InitStructure;
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169
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170 /* Configure TIM1 Channel1 output */
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171 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
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172 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
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173 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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174 GPIO_Init(GPIOA, &GPIO_InitStructure);
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175
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176 /* Configure ADC Channel14 as analog input */
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177 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4 ;
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178 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
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179 GPIO_Init(GPIOC, &GPIO_InitStructure);
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180 }
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181
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182 #ifdef USE_FULL_ASSERT
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183
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184 /**
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185 * @brief Reports the name of the source file and the source line number
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186 * where the assert_param error has occurred.
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187 * @param file: pointer to the source file name
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188 * @param line: assert_param error line source number
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189 * @retval None
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190 */
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191 void assert_failed(uint8_t* file, uint32_t line)
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192 {
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193 /* User can add his own implementation to report the file name and line number,
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194 ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
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195
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196 /* Infinite loop */
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197 while (1)
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198 {
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199 }
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200 }
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201
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202 #endif
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203
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204 /**
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205 * @}
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206 */
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207
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208 /**
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209 * @}
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210 */
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211
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212 /******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/