STM32多路采集ADC+DMA

/**

*  Main program

* @param None

* @retval None

*/

int main(void)

{

/*!< At this stage the microcontroller clock setting is already configured, 

this is done through SystemInit() function which is called from startup

file (startup_stm32f10x_xx.s) before to branch to application main.

To reconfigure the default setting of SystemInit() function, refer to

system_stm32f10x.c file

*/ 



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

RCC_Configuration();



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

GPIO_Configuration();



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

DMA_DeInit(DMA1_Channel1);

DMA_InitStructure.DMA_PeripheralBaseAddr = ADC1_DR_Address;

DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)&ADCConvertedValue;

DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;

DMA_InitStructure.DMA_BufferSize = 1;

DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;

DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Disable;

DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;

DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;

DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;

DMA_InitStructure.DMA_Priority = DMA_Priority_High;

DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;

DMA_Init(DMA1_Channel1, &DMA_InitStructure);



/* Enable DMA1 channel1 */

DMA_Cmd(DMA1_Channel1, ENABLE);



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

ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;

ADC_InitStructure.ADC_ScanConvMode = ENABLE;

ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;

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_14, 1, ADC_SampleTime_55Cycles5);



/* Enable ADC1 DMA */

ADC_DMACmd(ADC1, ENABLE);



/* Enable ADC1 */

ADC_Cmd(ADC1, ENABLE);



/* Enable ADC1 reset calibration register */ 

ADC_ResetCalibration(ADC1);

/* Check the end of ADC1 reset calibration register */

while(ADC_GetResetCalibrationStatus(ADC1));



/* Start ADC1 calibration */

ADC_StartCalibration(ADC1);

/* Check the end of ADC1 calibration */

while(ADC_GetCalibrationStatus(ADC1));



/* Start ADC1 Software Conversion */ 

ADC_SoftwareStartConvCmd(ADC1, ENABLE);



while (1)

{

}

}