DMA ADC多通道采样数据错位

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thw3172335 提问时间：2019-1-18 13:22 /

问答
是否解决:

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<div class="blockcode"><blockquote>volatile unsigned int After_filter[16]; //ÓÃÀ´´æ·ÅÇóÆ½¾ùÖµÖ®ºóµÄ½á¹û
void ADC1_GPIO_Config(void);
void ADC1_Mode_Config(void);
void ADC1_DMA_Init(void);
void ADC1_Init(void)
{
ADC1_DMA_Init();
ADC1_GPIO_Config();
ADC1_Mode_Config();
}
//Ñ¡ÓÃADCµÄÍ¨µÀ 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
//·Ö±ð¶ÔÓ¦¹Ü½Å PA0 PA1 PA2 PA3 PA4 PA5 PA6 PA7 PB0 PB1 PC0 PC1 PC2 PC3 PC4 PC5
//¶ÔÓ¦¹¦ÄÜ OCE OCF OCG OCH OVA OVB OVC OVD OVG OVH OCA OCB OCC OCD OVE OVF
void ADC1_GPIO_Config(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB |
RCC_APB2Periph_GPIOC |RCC_APB2Periph_AFIO ,ENABLE);//¹¦ÄÜ¸´ÓÃIOÊ±ÖÓ
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 | GPIO_Pin_7;
GPIO_InitStructure.GPIO_Mode=GPIO_Mode_AIN;//Ä£ÄâÊäÈë
GPIO_Init(GPIOA,&GPIO_InitStructure);//PA0 1 2 3 4 5 6 7
GPIO_InitStructure.GPIO_Pin=GPIO_Pin_0 | GPIO_Pin_1;
GPIO_InitStructure.GPIO_Mode=GPIO_Mode_AIN;//Ä£ÄâÊäÈë
GPIO_Init(GPIOB,&GPIO_InitStructure);//PB0 1
GPIO_InitStructure.GPIO_Pin=GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_2 | GPIO_Pin_3 | GPIO_Pin_4 | GPIO_Pin_5 ;
GPIO_InitStructure.GPIO_Mode=GPIO_Mode_AIN;//Ä£ÄâÊäÈë
GPIO_Init(GPIOC,&GPIO_InitStructure);//PC0 1 2 3 4 5
}
void ADC1_DMA_Init(void)
{
DMA_InitTypeDef DMA_InitStructure;
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1,ENABLE);//Ê¹ÄÜDMAÊ±ÖÓ
///**************************DMAÍ¨µÀ1ÅäÖÃ****************************/////
DMA_DeInit(DMA1_Channel1);//DMAÍ¨µÀ1³õÊ¼»¯
DMA_InitStructure.DMA_PeripheralBaseAddr = ADC1_DR_Address;//ADCµØÖ·
DMA_InitStructure.DMA_MemoryBaseAddr = (u32)&After_filter;//ÄÚ´æµØÖ·
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;//ÍâÉèÎªÊý¾ÝÔ´
DMA_InitStructure.DMA_BufferSize = 16;//MAX_ADC_CH*GET_ADC_NMB;
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;//ÍâÉèµØÖ·¹Ì¶¨
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;//ÄÚ´æµØÖ·¹Ì¶¨
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;//°ë×Ö
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;
DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;//Ñ»·´«Êä
DMA_InitStructure.DMA_Priority = DMA_Priority_High;
DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
DMA_Init(DMA1_Channel1,&DMA_InitStructure);
DMA_Cmd(DMA1_Channel1,ENABLE);
}
void ADC1_Mode_Config(void)
{
ADC_InitTypeDef ADC_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1 ,ENABLE);//Ê¹ÄÜADC1Ê±ÖÓ
//*******************************ADC1ÅäÖÃ**********************///
ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;//¶ÀÁ¢ADCÄ£Ê½
ADC_InitStructure.ADC_ScanConvMode = ENABLE;//½ûÖ¹É¨ÃèÄ£Ê½£¬É¨ÃèÄ£Ê½ÓÃÓÚ¶àÍ¨µÀ²É¼¯
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;//¿ªÆôÁ¬ÐøÄ£Ê½£¬¼´²»Í£µÄ½øÐÐADC×ª»»
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;//²»Ê¹ÓÃÍâ²¿´¥·¢×ª»»
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;//²É¼¯Êý¾ÝÓÒ¶ÔÆë
ADC_InitStructure.ADC_NbrOfChannel = 8;//Òª×ª»»µÄÍ¨µÀÊýÄ¿
ADC_Init(ADC1, &ADC_InitStructure);
RCC_ADCCLKConfig(RCC_PCLK2_Div8);//ÅäÖÃADCÊ±ÖÓ£¬ÎªPCLK2µÄ8·ÖÆµ£¬¼´9MHz
ADC_RegularChannelConfig(ADC1, ADC_Channel_10, 1, ADC_SampleTime_55Cycles5); //ADC4 PC0 µçÁ÷1
ADC_RegularChannelConfig(ADC1, ADC_Channel_11, 2, ADC_SampleTime_55Cycles5); //ADC5 PC1 µçÁ÷2
ADC_RegularChannelConfig(ADC1, ADC_Channel_12, 3, ADC_SampleTime_55Cycles5); //ADC2 PC2 µçÁ÷3
ADC_RegularChannelConfig(ADC1, ADC_Channel_13, 4, ADC_SampleTime_55Cycles5); //ADC3 PC3 µçÁ÷4
ADC_RegularChannelConfig(ADC1, ADC_Channel_0, 5, ADC_SampleTime_55Cycles5); //ADC12 PA0 µçÁ÷5
ADC_RegularChannelConfig(ADC1, ADC_Channel_1, 6, ADC_SampleTime_55Cycles5); //ADC13 PA1 µçÁ÷6
ADC_RegularChannelConfig(ADC1, ADC_Channel_2, 7, ADC_SampleTime_55Cycles5); //ADC11 PA2 µçÁ÷7
ADC_RegularChannelConfig(ADC1, ADC_Channel_3, 8, ADC_SampleTime_55Cycles5); //ADC10 PA3 µçÁ÷8
ADC_DMACmd(ADC1,ENABLE);
ADC_Cmd(ADC1,ENABLE);
ADC_ResetCalibration(ADC1);//¸´Î»Ð£×¼¼Ä´æÆ÷
while(ADC_GetResetCalibrationStatus(ADC1));//µÈ´ýÐ£×¼¼Ä´æÆ÷¸´Î»Íê³É
ADC_StartCalibration(ADC1);//ADCÐ£×¼
while(ADC_GetCalibrationStatus(ADC1));//µÈ´ýÐ£×¼Íê³É
ADC_SoftwareStartConvCmd(ADC1,ENABLE);//ÓÉÓÚÃ»ÓÐ²ÉÓÃÍâ²¿´¥·¢£¬ËùÒÔÊ¹ÓÃÈí¼þ´¥·¢ADC×ª»»
}
void pid_task(void *pdata)
{
float temp=0;
pdata = pdata;
ADC1_Init(); //ADC³õÊ¼»¯
OSTimeDlyHMSM(0, 0, 0, 100);//ÑÓÊ±0.1Ãë
for(;;)
{
OSTimeDlyHMSM(0, 0, 0, 10);//ÑÓÊ±1Ãë
TIM_SetCompare1(TIM1, After_filter[0]);
TIM_SetCompare2(TIM1, After_filter[1]);
TIM_SetCompare3(TIM1, After_filter[2]);
TIM_SetCompare4(TIM1, After_filter[3]);
TIM_SetCompare3(TIM2, After_filter[4]);
TIM_SetCompare4(TIM2, After_filter[5]);
TIM_SetCompare1(TIM4, After_filter[6]);
TIM_SetCompare2(TIM4, After_filter[7]);
}
}