本帖最后由 15125413637 于 2021-1-27 18:07 编辑
void ADC1_DMA_Init(void)
{
ADC_InitTypeDef ADC_InitStruct;
DMA_InitTypeDef DMA_InitStruct;
GPIO_InitTypeDef GPIO_InitStruct;
/* ADC1 DeInit */
// Delay_init1(72);
/* Enable GPIOA clock */
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA|RCC_AHBPeriph_GPIOB, ENABLE);
/* ADC1 Periph clock enable */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
/* DMA1 clock enable */
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1 , ENABLE);
ADC_DeInit(ADC1);
/* Configure PA.01 as analog input */
GPIO_InitStruct.GPIO_Pin = GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7;
GPIO_InitStruct.GPIO_Mode = GPIO_Mode_AN;
GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_NOPULL ;
GPIO_InitStruct.GPIO_Speed =GPIO_Speed_50MHz;
// GPIO_Init(GPIOB, &GPIO_InitStruct); // PA1,输入时不用设置速率
/* Enable GPIOB clock */
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB, ENABLE);
GPIO_InitStruct.GPIO_Pin = GPIO_Pin_0;
GPIO_InitStruct.GPIO_Mode = GPIO_Mode_AN;
GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_NOPULL ;
GPIO_InitStruct.GPIO_Speed =GPIO_Speed_50MHz;
GPIO_Init(GPIOB, &GPIO_InitStruct); // PA1,输入时不用设置速率
/* DMA1 Channel1 Config */
DMA_DeInit(DMA1_Channel1); //将DMA的通道1寄存器重设为缺省值
DMA_InitStruct.DMA_PeripheralBaseAddr = (uint32_t)ADC1_DR_Address;//DMA外设ADC基地址
DMA_InitStruct.DMA_MemoryBaseAddr = (uint32_t)&ADC1ConvertedValue;//DMA内存基地址
DMA_InitStruct.DMA_DIR = DMA_DIR_PeripheralSRC; //内存作为数据传输的目的地
DMA_InitStruct.DMA_BufferSize =adc_tested_times*adc_chanal_data; //DMA通道的DMA缓存的大小
DMA_InitStruct.DMA_PeripheralInc = DMA_PeripheralInc_Disable; //外设地址寄存器不变
DMA_InitStruct.DMA_MemoryInc = DMA_MemoryInc_Enable; //内存地址寄存器递增
DMA_InitStruct.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;//数据宽度为16位
DMA_InitStruct.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord; //数据宽度为16位
DMA_InitStruct.DMA_Mode = DMA_Mode_Circular; //工作在循环缓存模式
DMA_InitStruct.DMA_Priority = DMA_Priority_High; //DMA通道 x拥有高优先级
DMA_InitStruct.DMA_M2M = DMA_M2M_Disable; //DMA通道x没有设置为内存到内存传输
DMA_Init(DMA1_Channel1, &DMA_InitStruct); //根据DMA_InitStruct中指定的参数初始化DMA的通道
/* DMA1 Channel1 enable */
DMA_Cmd(DMA1_Channel1, ENABLE); //启动DMA通道
/* Initialize ADC structure */
ADC_StructInit(&ADC_InitStruct);
/* Configure the ADC1 in continous mode withe a resolutuion equal to 12 bits */
// ADC_InitStruct.ADC_Resolution = ADC_Resolution_12b;
ADC_InitStruct.ADC_Mode = ADC_Mode_Independent; //独立工作模式
ADC_InitStruct.ADC_ScanConvMode =ENABLE; //模数转换工作在扫描模式
ADC_InitStruct.ADC_ContinuousConvMode = ENABLE; //模数转换工作在连续转换模式
ADC_InitStruct.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None; //由软件触发启动
ADC_InitStruct.ADC_DataAlign = ADC_DataAlign_Right; //ADC数据右对齐
ADC_InitStruct.ADC_NbrOfChannel = adc_chanal_data; //顺序进行规则转换的ADC通道的数目
ADC_Init(ADC1, &ADC_InitStruct);
/* Convert the ADC1 Vref with 55.5 Cycles as sampling time */
ADC_RegularChannelConfig(ADC1, ADC_Channel_0, 1, ADC_SampleTime_239Cycles5);
ADC_RegularChannelConfig(ADC1, ADC_Channel_1, 2, ADC_SampleTime_239Cycles5);
ADC_RegularChannelConfig(ADC1, ADC_Channel_2, 3, ADC_SampleTime_239Cycles5);
ADC_RegularChannelConfig(ADC1, ADC_Channel_3, 4, ADC_SampleTime_239Cycles5);
ADC_RegularChannelConfig(ADC1, ADC_Channel_4, 5, ADC_SampleTime_239Cycles5);
ADC_RegularChannelConfig(ADC1, ADC_Channel_5, 6, ADC_SampleTime_239Cycles5);
ADC_RegularChannelConfig(ADC1, ADC_Channel_6, 7, ADC_SampleTime_239Cycles5);
ADC_RegularChannelConfig(ADC1, ADC_Channel_7, 8, ADC_SampleTime_239Cycles5);
ADC_RegularChannelConfig(ADC1, ADC_Channel_8, 9, ADC_SampleTime_239Cycles5);
RCC_ADCCLKConfig(RCC_PCLK2_Div6); //72M/6=12,ADC最大时间不能超过14M
/* Enable ADC1 DMA */
ADC_DMACmd(ADC1, ENABLE);
/* Enable ADC1 */
ADC_Cmd(ADC1, ENABLE);
// Delay_us1(1000);
printf("\r\1111111111\r\n");
/* Enable ADC1 reset calibaration register */
ADC_ResetCalibration(ADC1); //启用ADC1复位校准寄存器
/* Check the end of ADC1 reset calibration register */
while(ADC_GetResetCalibrationStatus(ADC1)); //等待ADC1复位校准
printf("\r\2222222222\r\n");
/* Start ADC1 calibaration */
ADC_StartCalibration(ADC1); //启动ADC1校准
/* Check the end of ADC1 calibration */
while(ADC_GetCalibrationStatus(ADC1)); //等待ADC1校准
/* Start ADC1 Software Conversion */
ADC_SoftwareStartConvCmd(ADC1, ENABLE);//开始ADC1软件转换
// ADC_ClearFlag(ADC1,ADC_FLAG_EOC);
}
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