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这里配置一个ADC多路ADC同时触发的DMA程序，
ADC配置
ADC_DeInit(ADC1); //复位ADC1,将外设 ADC1 的全部寄存器重设为缺省值
ADC_InitStructure.ADC_Mode = ADC_Mode_Independent; //ADC工作模式:ADC1和ADC2工作在独立模式
ADC_InitStructure.ADC_ScanConvMode = ENABLE; //模数转换工作在扫描模式
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE; //模数转换工作在连续转换模式
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None; //转换由软件而不是外部触发启动
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right; //ADC数据右对齐
ADC_InitStructure.ADC_NbrOfChannel = N; //顺序进行规则转换的ADC通道的数目
ADC_Init(ADC1, &ADC_InitStructure);
DMA配置
DMA_DeInit(DMA1_Channel1); //将DMA的通道1寄存器重设为缺省值 DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&ADC1->DR; //定义DMA外设基地址为ADC1 DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)&ADC_RCVTab; //定义DMA内存基地址 DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC; //外设作为数据传输的来源 DMA_InitStructure.DMA_BufferSize = N*16; //定义指定DMA通道的DMA缓存的大小 DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable; //外设地址寄存器不变 DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable; //内存地址寄存器递增 DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord; //数据宽度为16位 DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord; //数据宽度为16位 DMA_InitStructure.DMA_Mode = DMA_Mode_Circular; //工作在循环缓存模式 DMA_InitStructure.DMA_Priority = DMA_Priority_High; //DMA通道1拥有高优先级 DMA_InitStructure.DMA_M2M = DMA_M2M_Disable; //DMA通道1没有设置为内存到内存传输 DMA_Init(DMA1_Channel1, &DMA_InitStructure);
配置ADC转换顺序及周期
ADC_RegularChannelConfig(ADC1, ADC_Channel_0, 0, ADC_SampleTime_1Cycles5); ADC_RegularChannelConfig(ADC1, ADC_Channel_1, 1, ADC_SampleTime_1Cycles5); ADC_RegularChannelConfig(ADC1, ADC_Channel_2, 2, ADC_SampleTime_1Cycles5); ADC_RegularChannelConfig(ADC1, ADC_Channel_3, 3, ADC_SampleTime_1Cycles5); ADC_RegularChannelConfig(ADC1, ADC_Channel_4, 4, ADC_SampleTime_1Cycles5); ADC_RegularChannelConfig(ADC1, ADC_Channel_5, 5, ADC_SampleTime_1Cycles5); ADC_RegularChannelConfig(ADC1, ADC_Channel_6, 6, ADC_SampleTime_1Cycles5); ADC_RegularChannelConfig(ADC1, ADC_Channel_7, 7, ADC_SampleTime_1Cycles5); ADC_RegularChannelConfig(ADC1, ADC_Channel_8, 8, ADC_SampleTime_1Cycles5); ADC_RegularChannelConfig(ADC1, ADC_Channel_9, 9, ADC_SampleTime_1Cycles5); ADC_RegularChannelConfig(ADC1, ADC_Channel_10, 10, ADC_SampleTime_1Cycles5); ADC_RegularChannelConfig(ADC1, ADC_Channel_11, 11, ADC_SampleTime_1Cycles5);
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