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這里配置一個ADC多路ADC同時觸發(fā)的DMA程序，
ADC配置
ADC_DeInit(ADC1); //復(fù)位ADC1,將外設(shè) ADC1 的全部寄存器重設(shè)為缺省值
ADC_InitStructure.ADC_Mode = ADC_Mode_Independent; //ADC工作模式:ADC1和ADC2工作在獨(dú)立模式
ADC_InitStructure.ADC_ScanConvMode = ENABLE; //模數(shù)轉(zhuǎn)換工作在掃描模式
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE; //模數(shù)轉(zhuǎn)換工作在連續(xù)轉(zhuǎn)換模式
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None; //轉(zhuǎn)換由軟件而不是外部觸發(fā)啟動
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right; //ADC數(shù)據(jù)右對齊
ADC_InitStructure.ADC_NbrOfChannel = N; //順序進(jìn)行規(guī)則轉(zhuǎn)換的ADC通道的數(shù)目
ADC_Init(ADC1, &ADC_InitStructure);
DMA配置
DMA_DeInit(DMA1_Channel1); //將DMA的通道1寄存器重設(shè)為缺省值 DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&ADC1->DR; //定義DMA外設(shè)基地址為ADC1 DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)&ADC_RCVTab; //定義DMA內(nèi)存基地址 DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC; //外設(shè)作為數(shù)據(jù)傳輸?shù)膩碓?nbsp; DMA_InitStructure.DMA_BufferSize = N*16; //定義指定DMA通道的DMA緩存的大小 DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable; //外設(shè)地址寄存器不變 DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable; //內(nèi)存地址寄存器遞增 DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord; //數(shù)據(jù)寬度為16位 DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord; //數(shù)據(jù)寬度為16位 DMA_InitStructure.DMA_Mode = DMA_Mode_Circular; //工作在循環(huán)緩存模式 DMA_InitStructure.DMA_Priority = DMA_Priority_High; //DMA通道1擁有高優(yōu)先級 DMA_InitStructure.DMA_M2M = DMA_M2M_Disable; //DMA通道1沒有設(shè)置為內(nèi)存到內(nèi)存?zhèn)鬏?nbsp; DMA_Init(DMA1_Channel1, &DMA_InitStructure);
配置ADC轉(zhuǎn)換順序及周期
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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stm32adc12路采集DMA.rar
2018-11-21 18:29 上傳
點(diǎn)擊文件名下載附件
下載積分: 黑幣 -5
345.94 KB, 下載次數(shù): 42, 下載積分: 黑幣 -5
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