STM32 ADC 规则多通道转换

转：http://blog.csdn.net/hitxiaya/article/details/7415591

看了这个代码之后终于明白了规则多通道转是怎么回事，以及整体如何实现了。附代码：

/*******************************************************************************

* Function Name  : main

* Description    : Main program

* Input          : None

* Output         : None

* Return         : None

*******************************************************************************/

int main(void)

{

#ifdef DEBUG

  debug();

#endif

  /* System clocks configuration ---------------------------------------------*/

  RCC_Configuration();

  /* NVIC configuration ------------------------------------------------------*/

  NVIC_Configuration();

  /* GPIO configuration ------------------------------------------------------*/

  GPIO_Configuration();

  LcdShow_Init();

  /* DMA1 channel1 configuration ----------------------------------------------*/

  DMA_DeInit(DMA1_Channel1);

  DMA_InitStructure.DMA_PeripheralBaseAddr = ADC1_DR_Address;//外设地址

  DMA_InitStructure.DMA_MemoryBaseAddr = (u32)ADC_RCVTab;//内存地址

  DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;//dma传输方向单向

  DMA_InitStructure.DMA_BufferSize = 160;//设置DMA在传输时缓冲区的长度 word

  DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;//设置DMA的外设递增模式，一个外设

  DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;//设置DMA的内存递增模式，

  DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;//外设数据字长

  DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;//内存数据字长

  DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;//设置DMA的传输模式：连续不断的循环模式

  DMA_InitStructure.DMA_Priority = DMA_Priority_High;//设置DMA的优先级别

  DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;//设置DMA的2个memory中的变量互相访问

  DMA_Init(DMA1_Channel1, &DMA_InitStructure);

  

  /* Enable DMA1 channel1 */

  DMA_Cmd(DMA1_Channel1, ENABLE);

  /* ADC1 configuration ------------------------------------------------------*/

  ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;//独立工作模式

  ADC_InitStructure.ADC_ScanConvMode = ENABLE;//扫描方式

  ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;//连续转换

  ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;//外部触发禁止

  ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;//数据右对齐

  ADC_InitStructure.ADC_NbrOfChannel = 8;//用于转换的通道数

  ADC_Init(ADC1, &ADC_InitStructure);

  /* ADC1 regular channels configuration [规则模式通道配置]*/ 

  ADC_RegularChannelConfig(ADC1, ADC_Channel_8 , 1, ADC_SampleTime_239Cycles5);

  ADC_RegularChannelConfig(ADC1, ADC_Channel_9 , 2, ADC_SampleTime_239Cycles5);

  ADC_RegularChannelConfig(ADC1, ADC_Channel_10, 3, ADC_SampleTime_239Cycles5);

  ADC_RegularChannelConfig(ADC1, ADC_Channel_11, 4, ADC_SampleTime_239Cycles5);  

  ADC_RegularChannelConfig(ADC1, ADC_Channel_12, 5, ADC_SampleTime_239Cycles5);

  ADC_RegularChannelConfig(ADC1, ADC_Channel_13, 6, ADC_SampleTime_239Cycles5);

  ADC_RegularChannelConfig(ADC1, ADC_Channel_14, 7, ADC_SampleTime_239Cycles5);

  ADC_RegularChannelConfig(ADC1, ADC_Channel_15, 8, ADC_SampleTime_239Cycles5); 

  /* Enable ADC1 DMA [使能ADC1 DMA]*/

  ADC_DMACmd(ADC1, ENABLE);

  

  /* Enable ADC1 [使能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));

  

  /* Start ADC1 So
9baf
ftware Conversion */

  ADC_SoftwareStartConvCmd(ADC1, ENABLE);
}