1 void ADC_Configure(void)
2 {
3 ADC_InitTypeDef ADC_InitStructure;
4 GPIO_InitTypeDef GPIO_InitStructure;
5 RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1,ENABLE);
6 RCC_AHBPeriphClockCmd(RCC_APB2Periph_GPIOA , ENABLE);
7
8 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6;
9 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
10 GPIO_Init(GPIOA, &GPIO_InitStructure);
11
12 RCC_ADCCLKConfig(RCC_PCLK2_Div4); //配置ADC时钟分频 2,4,6,8
13 ADC_InitStructure.ADC_Mode=ADC_Mode_Independent; //独立工作模式
14 ADC_InitStructure.ADC_ScanConvMode=ENABLE; //工作在扫描模式
15 ADC_InitStructure.ADC_ContinuousConvMode=ENABLE; //连续模式
16 ADC_InitStructure.ADC_ExternalTrigConv=ADC_ExternalTrigConv_None; //转换由软件触发启动
17 //ADC_InitStructure.ADC_ExternalTrigConv=ADC_ExternalTrigConv_T1_CC1; //定时器1的捕获比较通道1作为外部触发转换源（T1_2,T1_3,T2_2,T4_4）
18 //ADC_InitStructure.ADC_ExternalTrigConv=ADC_ExternalTrigConv_Ext_1T11; //外部中断通道11的事件作为外部触发转换源
19 ADC_InitStructure.ADC_DataAlign=ADC_DataAlign_Right; //ADC数据右对齐
20 ADC_InitStructure.ADC_NbrOfChannel =5; //进行规则转换的ADC通道的数目为2
21 ADC_Init(ADC1,&ADC_InitStructure);
22 ADC_RegularChannelConfig(ADC1,ADC_Channel_2,1,ADC_SampleTime_55Cycles5); //选择通道2，转换顺序1,采样时间为1.5周期
23 ADC_RegularChannelConfig(ADC1,ADC_Channel_3,2,ADC_SampleTime_55Cycles5); //选择通道3，转换顺序2,采样时间为1.5周期
24 ADC_RegularChannelConfig(ADC1,ADC_Channel_4,3,ADC_SampleTime_55Cycles5); //选择通道4，转换顺序3,采样时间为1.5周期
25 ADC_RegularChannelConfig(ADC1,ADC_Channel_5,4,ADC_SampleTime_55Cycles5); //选择通道5，转换顺序4,采样时间为1.5周期
26 ADC_RegularChannelConfig(ADC1,ADC_Channel_6,5,ADC_SampleTime_55Cycles5); //选择通道6，转换顺序5,采样时间为1.5周期
27 ADC_DMACmd(ADC1, ENABLE);
28 ADC_Cmd(ADC1,ENABLE); //使能AD1
29 ADC_ResetCalibration(ADC1); //复位ADC1的校准寄存器
30 ADC_StartCalibration(ADC1); //开始ADC1的校准
31 while(ADC_GetCalibrationStatus(ADC1)); //等待ADC1校准完成
32 ADC_SoftwareStartConvCmd(ADC1,ENABLE); //启动ADC1转换
33 }
34 void DMA_Configure(void)
35 {
36 DMA_InitTypeDef DMA_InitStructure;
37 RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1,ENABLE);
38 DMA_DeInit(DMA1_Channel1); //复位DMA1通道
39 DMA_InitStructure.DMA_PeripheralBaseAddr=DR_ADDRESS;
40 DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)ad_value;
41 DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC; //外设作为数据传输的来源
42 DMA_InitStructure.DMA_M2M=DMA_M2M_Disable;
43 DMA_InitStructure.DMA_BufferSize = 5; //
44 DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable; //外设地址不变
45 DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable; //内存地址递增
46 DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord; //外设数据宽度为16位
47 DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord; //内存数据宽度为16位
48 DMA_InitStructure.DMA_Mode = DMA_Mode_Circular; //循环缓存模式
49 DMA_InitStructure.DMA_Priority = DMA_Priority_High; //高优先级
50 DMA_InitStructure.DMA_M2M = DMA_M2M_Disable; //没有设置内存到内存的传输
51 DMA_Init(DMA1_Channel1, &DMA_InitStructure);
52 DMA_ITConfig(DMA1_Channel1, DMA_IT_TC, ENABLE);
53 DMA_Cmd(DMA1_Channel1,ENABLE); //开启DMA1通道传输
54 }
