谁配置过，双ADC慢速交替采集模式，指点下

只看该作者 · 2013-3-12 10:32

谁配置过，双ADC慢速交替采集模式，指点下
ADC_InitTypeDef ADC_InitStructure;

ADC_DeInit(ADC1);
ADC_DeInit(ADC2);
DMA_DeInit(DMA1_Channel1);
//ADC1 configuration
ADC_InitStructure.ADC_Mode = ADC_Mode_SlowInterl;
ADC_InitStructure.ADC_ScanConvMode = DISABLE;
ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfChannel = 1;
ADC_Init(ADC1, &ADC_InitStructure);
//ADC1 regular channel14 configuration
ADC_RegularChannelConfig(ADC1, ADC_Channel_10, 1, ADC_SampleTime_13Cycles5);

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

//ADC2 configuration
ADC_InitStructure.ADC_Mode = ADC_Mode_SlowInterl;
ADC_InitStructure.ADC_ScanConvMode = DISABLE;
ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfChannel = 1;
ADC_Init(ADC2, &ADC_InitStructure);

//ADC2 regular channel14 configuration
ADC_RegularChannelConfig(ADC2, ADC_Channel_10, 1, ADC_SampleTime_13Cycles5);

// Enable ADC2 external trigger conversion
ADC_ExternalTrigConvCmd(ADC2, ENABLE);

//DMA Config
DMA_InitTypeDef DMA_InitStructure;
//DMA1 channel1 configuration
DMA_DeInit(DMA1_Channel1);
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&ADC_Adc->DR;//(uint32)ADC1_DR_Address;
DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)pCap_Line_Buf;//(uint32)&adc_data0[0];
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
DMA_InitStructure.DMA_BufferSize = ROW_LENGTH;
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Word;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Word;
DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;//连续触发
DMA_InitStructure.DMA_Priority = DMA_Priority_High;
DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
DMA_Init(DMA1_Channel1, &DMA_InitStructure);
//Enable DMA1 channel1
DMA_ITConfig(DMA1_Channel1, DMA_IT_TC, ENABLE);
//DMA_Cmd(DMA1_Channel1, ENABLE);

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

//Enable ADC1
ADC_Cmd(ADC1, ENABLE);
Delay_1ms(1);

//Enable ADC1 reset calibaration register
ADC_ResetCalibration(ADC1);
//Check the end of ADC1 reset calibration register
while(ADC_GetResetCalibrationStatus(ADC1));

//Start ADC1 calibaration
ADC_StartCalibration(ADC1);
//Check the end of ADC1 calibration
while(ADC_GetCalibrationStatus(ADC1));

//Enable ADC2
ADC_Cmd(ADC2, ENABLE);
Delay_1ms(1);

//Enable ADC2 reset calibaration register
ADC_ResetCalibration(ADC2);
//Check the end of ADC2 reset calibration register
while(ADC_GetResetCalibrationStatus(ADC2));

//Start ADC2 calibaration
ADC_StartCalibration(ADC2);
//Check the end of ADC2 calibration
while(ADC_GetCalibrationStatus(ADC2));

//Start ADC1 Software Conversion
ADC_SoftwareStartConvCmd(ADC1, ENABLE);

这是我配置的慢速交替模式，手册上说这个模式下不能设置CONT位，故我这样配置：ADC_InitStructure.ADC_ContinuousConvMode = DISABLE; 但在实际的采集中，每次好像只进行了一次adc转化，手册上说28个时钟周期后启动新的ADC2，不知道我配置的好像没有自动启动。
哪位大神了解的，指点下，谢谢了！

只看该作者 · 2013-3-12 10:56

没人知道么？

1万 · 2013-3-12 11:54

ST官网上有ADC各种模式的应用文档和对应例程，LZ有参考过吗？

AN3116 ADC模式及其应用

例程项目

只看该作者 · 2013-3-12 13:56

香水城发表于 2013-3-12 11:54
ST官网上有ADC各种模式的应用文档和对应例程，LZ有参考过吗？

AN3116 ADC模式及其应用

谢谢版主，我好好看下

只看该作者 · 2013-3-12 15:13

香水城发表于 2013-3-12 11:54
ST官网上有ADC各种模式的应用文档和对应例程，LZ有参考过吗？

AN3116 ADC模式及其应用

版主，我按着例程上的配置,
int main(void)
{
  /* System clocks configuration ---------------------------------------------*/
  RCC_Configuration();

  /* GPIO configuration ------------------------------------------------------*/
  GPIO_Configuration();

  /* DMA1 channel1 configuration ----------------------------------------------*/
  DMA_DeInit(DMA1_Channel1);
  DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)ADC1_DR_Address;
  DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)&ADC_DualConvertedValueTab;
  DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
  DMA_InitStructure.DMA_BufferSize = BufferLenght;
  DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
  DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
  DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Word;
  DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Word;
  DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
  DMA_InitStructure.DMA_Priority = DMA_Priority_High;
  DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
  DMA_Init(DMA1_Channel1, &DMA_InitStructure);

  /* Enable DMA1 Channel1: the DLA should be enabled in dual mode even if the
  DMA is not used */
  DMA_Cmd(DMA1_Channel1, ENABLE);

  /* ADC1 configuration ------------------------------------------------------*/
  ADC_InitStructure.ADC_Mode = ADC_Mode_SlowInterl;
  ADC_InitStructure.ADC_ScanConvMode = DISABLE;
  ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;
  ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;
  ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
  ADC_InitStructure.ADC_NbrOfChannel = 1;
  ADC_Init(ADC1, &ADC_InitStructure);

  /* ADC1 regular channels configuration */
  ADC_RegularChannelConfig(ADC1, ADC_Channel_11, 1, ADC_SampleTime_1Cycles5);

  /* ADC2 configuration ------------------------------------------------------*/
  ADC_InitStructure.ADC_Mode = ADC_Mode_SlowInterl;
  ADC_InitStructure.ADC_ScanConvMode = DISABLE;
  ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;
  ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;
  ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
  ADC_InitStructure.ADC_NbrOfChannel = 1;
  ADC_Init(ADC2, &ADC_InitStructure);

  /* ADC2 regular channels configuration */
  ADC_RegularChannelConfig(ADC2, ADC_Channel_11, 1, ADC_SampleTime_1Cycles5);

  /* Enable ADC2 external trigger conversion */
  ADC_ExternalTrigConvCmd(ADC2, ENABLE);

  /* Enable ADC1 DMA: it should be enabled in dual mode even if the DMA is not used */
  ADC_DMACmd(ADC1, ENABLE);

  /* Enable ADC1 */
  ADC_Cmd(ADC1, ENABLE);

  /* Enable ADC1 reset calibaration register */
  ADC_ResetCalibration(ADC1);

  /* Check the end of ADC1 reset calibration register */
  while(ADC_GetResetCalibrationStatus(ADC1));

  /* Start ADC1 calibaration */
  ADC_StartCalibration(ADC1);

  /* Check the end of ADC1 calibration */
  while(ADC_GetCalibrationStatus(ADC1));

  /* Enable ADC2 */
  ADC_Cmd(ADC2, ENABLE);

  /* Enable ADC2 reset calibaration register */
  ADC_ResetCalibration(ADC2);

  /* Check the end of ADC2 reset calibration register */
  while(ADC_GetResetCalibrationStatus(ADC2));

  /* Start ADC2 calibaration */
  ADC_StartCalibration(ADC2);

  /* Check the end of ADC2 calibration */
  while(ADC_GetCalibrationStatus(ADC2));

  /* Start ADC1 Software Conversion */
  ADC_SoftwareStartConvCmd(ADC1, ENABLE);

  /* Test on Channel 1 DMA1_FLAG_TC flag */
  while(!DMA_GetFlagStatus(DMA1_FLAG_TC1));

  /* Clear Channel 1 DMA1_FLAG_TC flag */
  DMA_ClearFlag(DMA1_FLAG_TC1);

死在这个循环里， while(!DMA_GetFlagStatus(DMA1_FLAG_TC1));请问下是什么情况?

只看该作者 · 2013-3-12 15:39

补充下，我的ADC频率配置的是36Mhz的，远高于14Mhz的极限，是不是这个有影响呢，现在貌似DMA没起到作用，一直没进入DMA传输完的中断！

1万 · 2013-3-12 16:16

aaaxmaaa007 发表于 2013-3-12 15:39
补充下，我的ADC频率配置的是36Mhz的，远高于14Mhz的极限，是不是这个有影响呢，现在貌似DMA没起到作用，一 ...

“ADC频率配置的是36MHz “，真是吓死个人哦。你都知道远高于14MHz的极限了，啥叫”极限“

只看该作者 · 2013-3-12 16:37

香水城发表于 2013-3-12 16:16
“ADC频率配置的是36MHz “，真是吓死个人哦。你都知道远高于14MHz的极限了，啥叫”极限“ ...

呵呵，我错了，那我想问下您，DMA进不去中断，大概是什么原因引起的？

只看该作者 · 2013-3-12 20:19

香水城发表于 2013-3-12 16:16
“ADC频率配置的是36MHz “，真是吓死个人哦。你都知道远高于14MHz的极限了，啥叫”极限“ ...

香主，坐等你的指教诶

只看该作者 · 2013-3-13 10:28

????????

谁配置过，双ADC慢速交替采集模式，指点下

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