10通道ADC的 DMA方式串口显示

冷面狼

为什么我的不对呢，高手们指点下，那有验证过的例子，我想参考下。我的是参考百度上面来的，但是不对，以下是主要的ADC程序，串口能正确显示。

int main(void )

{   u16  j;//i=10,

//float a;

tempkcount=0;

   RCC_APB2PeriphClockCmd (  RCC_APB2Periph_GPIOD | RCC_APB2Periph_USART1 

 | RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB

 | RCC_APB2Periph_GPIOC | RCC_APB2Periph_AFIO,  ENABLE  ) ;// 　打开时钟

 USART1_NVIC_Configuration(  ); //??????NVIC????

 SysTickInit(); 

 Timer2345Init( ); 

 ledinit();{   u16  j;//i=10,

//float a;

tempkcount=0;

   RCC_APB2PeriphClockCmd (  RCC_APB2Periph_GPIOD | RCC_APB2Periph_USART1 

 | RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB

 | RCC_APB2Periph_GPIOC | RCC_APB2Periph_AFIO,  ENABLE  ) ;//  ?ò???±??

 USART1_NVIC_Configuration(  ); //??????NVIC????

 SysTickInit(); 

 Timer2345Init( ); 

 ledinit();

 openuart1();  

 ADC_Start();

while(1) 

{ 

 for(j=0;j<10;j++)  

{

 printf ("AD[%2d]  = %.3fV    ",  j,(((float )(AD_Value [j])*3300))/4096 /1000  );

 delays(100); //延时100MS

}

   printf (" \n\n");

}   

}

 

#include "ADC.h"

//----------------------------------------------------ADC的 GPIO初始化化--------------------------------------------------

void ADC_GPIO_Init(void )

{

GPIO_InitTypeDef   AD_GPIO_Structure;   //?¨???á????

RCC_APB2PeriphClockCmd (RCC_APB2Periph_ADC1 ,ENABLE );//?ò??ADC1???±??

AD_GPIO_Structure.GPIO_Pin=GPIO_Pin_6|GPIO_Pin_7 ; //????????????

AD_GPIO_Structure.GPIO_Mode=GPIO_Mode_AIN ; //??????????????

GPIO_Init (GPIOA ,&AD_GPIO_Structure );

AD_GPIO_Structure.GPIO_Pin=GPIO_Pin_0|GPIO_Pin_1 ; //????????????

AD_GPIO_Structure.GPIO_Mode=GPIO_Mode_AIN ; //??????????????

GPIO_Init (GPIOB ,&AD_GPIO_Structure );

AD_GPIO_Structure.GPIO_Pin=GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5 ; //????????????

AD_GPIO_Structure.GPIO_Mode=GPIO_Mode_AIN ; //??????????????

GPIO_Init (GPIOC ,&AD_GPIO_Structure );

}

 

//-------------------------------------------------------ADC1初始化---------------------------------

void ADCInit(void)

{

ADC_InitTypeDef   ADC_initStructure;    //???????á????

ADC_DeInit(ADC1);

ADC_initStructure.ADC_Mode=ADC_Mode_Independent; //ADC1 ?¤×÷????????????

ADC_initStructure.ADC_ScanConvMode =  ENABLE;//DISABLE  ; //?¤×÷???¨?è??

ADC_initStructure.ADC_ContinuousConvMode =  ENABLE ;// ????×???????

ADC_initStructure.ADC_ExternalTrigConv=ADC_ExternalTrigConv_None ;//?í????·?????

  

ADC_initStructure.ADC_DataAlign =ADC_DataAlign_Right ;//??????????

ADC_initStructure.ADC_NbrOfChannel=10;//?¨????????

 

ADC_Init (ADC1,&ADC_initStructure); //??????

RCC_ADCCLKConfig(RCC_PCLK2_Div8);//?±??8·???

ADC_RegularChannelConfig(ADC1,ADC_Channel_6,1,ADC_SampleTime_239Cycles5); //?è??ADC???¨???????ò?????ù????

ADC_RegularChannelConfig(ADC1,ADC_Channel_7,2,ADC_SampleTime_239Cycles5); //?è??ADC???¨???????ò?????ù????

ADC_RegularChannelConfig(ADC1,ADC_Channel_8,3,ADC_SampleTime_239Cycles5); //?è??ADC???¨???????ò?????ù????

ADC_RegularChannelConfig(ADC1,ADC_Channel_9,4,ADC_SampleTime_239Cycles5); //?è??ADC???¨???????ò?????ù????

ADC_RegularChannelConfig(ADC1,ADC_Channel_10,5,ADC_SampleTime_239Cycles5); //?è??ADC???¨???????ò?????ù????

ADC_RegularChannelConfig(ADC1,ADC_Channel_11,6,ADC_SampleTime_239Cycles5); //?è??ADC???¨???????ò?????ù????

ADC_RegularChannelConfig(ADC1,ADC_Channel_12,7,ADC_SampleTime_239Cycles5); //?è??ADC???¨???????ò?????ù????

ADC_RegularChannelConfig(ADC1,ADC_Channel_13,8,ADC_SampleTime_239Cycles5); //?è??ADC???¨???????ò?????ù????

ADC_RegularChannelConfig(ADC1,ADC_Channel_14,9,ADC_SampleTime_239Cycles5); //?è??ADC???¨???????ò?????ù????

ADC_RegularChannelConfig(ADC1,ADC_Channel_15,10,ADC_SampleTime_239Cycles5); //?è??ADC???¨???????ò?????ù????

ADC_TempSensorVrefintCmd (ENABLE);

//ADC_ITConfig(ADC1,ADC_IT_EOC,ENABLE); //?ò??ADC??????

ADC_Cmd (ADC1,ENABLE );//????ADC

ADC_ResetCalibration (ADC1);  //??????×??????÷

while(ADC_GetResetCalibrationStatus (ADC1 ));//??????×??ê??

ADC_StartCalibration (ADC1 );

while(ADC_GetResetCalibrationStatus (ADC1 ));//??????×??ê??

ADC_SoftwareStartConvCmd (ADC1,ENABLE ); //?í????·?????×???

ADC_DMACmd(ADC1,ENABLE);//????ADC1??DMA

}

 

//-------------------------------------------------DMA初始化-----------------------------------

void  ADC_DMA_Init(void)

{

DMA_InitTypeDef   DMA_InitStructure;

RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1,ENABLE);//?ò??DMA???±??

DMA_DeInit(DMA1_Channel1);//????DMA?¨??1

DMA_InitStructure.DMA_PeripheralBaseAddr=(u32)&ADC1->DR;//ADC1_DR_Address;  //DMA???ù???·??ADC???è???·

DMA_InitStructure.DMA_MemoryBaseAddr=(u32)&AD_Value;     //DMA????±ê???·??×??¨??????×é???·

DMA_InitStructure.DMA_DIR=DMA_DIR_PeripheralSRC;//DMA????????·???

DMA_InitStructure.DMA_BufferSize=10;//10???¨?????????¨??×???50??50*

DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;//???è?????÷???·??±?

DMA_InitStructure.DMA_MemoryInc=DMA_MemoryInc_Enable;//???????·?????÷????

DMA_InitStructure.DMA_PeripheralDataSize=DMA_PeripheralDataSize_HalfWord;//?????í????16??

DMA_InitStructure.DMA_Mode=DMA_Mode_Circular;//DMA?¤×÷?????·????????

  

DMA_InitStructure.DMA_Priority=DMA_Priority_High;//??DMA?¨??????????????

DMA_InitStructure.DMA_M2M=DMA_M2M_Disable;//??DMA?¨??????????????????????

DMA_Init(DMA1_Channel1,&DMA_InitStructure);//??????????

DMA_Cmd(DMA1_Channel1,ENABLE); //????DMA

}

 

//-------------------------ADC初始化-----------------------------------------

void ADC_Start(void)

{

ADC_GPIO_Init();  //??????ADC??????

//ADC_NVIC_Init();  //NVIC ?????? 

ADC_DMA_Init( );  //ADC??????

ADCInit();        //??????ADC1

}

 

正点原子

论坛搜索：ADC DMA

冷面狼

void  ADC_DMA_Init(void)

{

DMA_InitTypeDef   DMA_InitStructure;

RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1,ENABLE);//?ò??DMA???±??

DMA_DeInit(DMA1_Channel1);//????DMA?¨??1

DMA_InitStructure.DMA_PeripheralBaseAddr=(u32)&ADC1->DR;//ADC1_DR_Address;  //DMA???ù???·??ADC???è???·

DMA_InitStructure.DMA_MemoryBaseAddr=(u32)&AD_Value;     //DMA????±ê???·??×??¨??????×é???·

DMA_InitStructure.DMA_DIR=DMA_DIR_PeripheralSRC;//DMA????????·???

DMA_InitStructure.DMA_BufferSize=10;//10???¨?????????¨??×???50??50*

DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;//???è?????÷???·??±?

DMA_InitStructure.DMA_MemoryInc=DMA_MemoryInc_Enable;//???????·?????÷????

DMA_InitStructure.DMA_PeripheralDataSize=DMA_PeripheralDataSize_HalfWord;//?????í????16??

DMA_InitStructure.DMA_MemoryDataSize=DMA_MemoryDataSize_HalfWord; //?¨???????÷???????í????16??

问题在这，开始我没有加上这句

DMA_InitStructure.DMA_Mode=DMA_Mode_Circular;//DMA?¤×÷?????·????????

  

DMA_InitStructure.DMA_Priority=DMA_Priority_High;//??DMA?¨??????????????

DMA_InitStructure.DMA_M2M=DMA_M2M_Disable;//??DMA?¨??????????????????????

DMA_Init(DMA1_Channel1,&DMA_InitStructure);//??????????

DMA_Cmd(DMA1_Channel1,ENABLE); //????DMA

}