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发表于 2015-8-15 22:15:16
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#include "stm32f4xx.h"
#include "usart.h"
#include "stm32f4xx_dac.h"
#define ADC1_DR_Address ((uint32_t)0x4001204C)
__IO uint16_t AD_Value[4]={0,0,0,0};
__IO uint32_t ADC1_ConvertedValue_0=0;
__IO uint32_t ADC1_ConvertedValue_1=0;
__IO uint32_t ADC1_ConvertedValue_2=0;
__IO uint32_t ADC1_ConvertedValue_3=0;
void ADC1_DMA_Config(void);
int main(void)
{
int SS;
USART_Configuration();//USART_NVIC_Config();
ADC1_DMA_Config();
ADC_SoftwareStartConv(ADC1);
while (1)
{
ADC1_ConvertedValue_0=AD_Value[0]*3300/0xFFF;
ADC1_ConvertedValue_1=AD_Value[1]*3300/0xFFF;
ADC1_ConvertedValue_2=AD_Value[2]*3300/0xFFF;
ADC1_ConvertedValue_3=AD_Value[3]*3300/0xFFF;
// for (SS=0;SS<400;SS++)
// {
// printf("%d ",(ADC1_ConvertedValue_0[SS]>>16)*230/4095);
printf("%d ",ADC1_ConvertedValue_1);
// }printf("\r\nthis over\r\n");
}
}
void ADC1_DMA_Config(void)
{
ADC_InitTypeDef ADC_InitStructure;
ADC_CommonInitTypeDef ADC_CommonInitStructure;
DMA_InitTypeDef DMA_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA2 | RCC_AHB1Periph_GPIOC, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
DMA_DeInit(DMA2_Stream0);
DMA_InitStructure.DMA_Channel = DMA_Channel_0;
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)ADC1_DR_Address;
DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)&AD_Value;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralToMemory;
DMA_InitStructure.DMA_BufferSize = 4;
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;
DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;
// DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
DMA_InitStructure.DMA_Priority = DMA_Priority_High;
DMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Disable;
DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_HalfFull;
DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single;
DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single;
DMA_Init(DMA2_Stream0, &DMA_InitStructure);
DMA_Cmd(DMA2_Stream0, ENABLE);
/* Configure ADC1 Channel6 pin as analog input ******************************/
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL ;
GPIO_Init(GPIOC, &GPIO_InitStructure);
/* ADC Common Init **********************************************************/
ADC_CommonInitStructure.ADC_Mode = ADC_Mode_Independent;
ADC_CommonInitStructure.ADC_Prescaler = ADC_Prescaler_Div2;
ADC_CommonInitStructure.ADC_DMAAccessMode = ADC_DMAAccessMode_1;
ADC_CommonInitStructure.ADC_TwoSamplingDelay = ADC_TwoSamplingDelay_5Cycles;
ADC_CommonInit(&ADC_CommonInitStructure);
/* ADC1 Init ****************************************************************/
ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
ADC_InitStructure.ADC_ScanConvMode = ENABLE;
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None ;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfConversion =4;
ADC_Init(ADC1, &ADC_InitStructure);
/* ADC1 regular channe6 configuration *************************************/
ADC_RegularChannelConfig(ADC1, ADC_Channel_10, 1, ADC_SampleTime_15Cycles);
ADC_RegularChannelConfig(ADC1, ADC_Channel_11, 2, ADC_SampleTime_15Cycles);
ADC_RegularChannelConfig(ADC1, ADC_Channel_12, 3, ADC_SampleTime_15Cycles);
ADC_RegularChannelConfig(ADC1, ADC_Channel_13, 4, ADC_SampleTime_15Cycles);
ADC_DMARequestAfterLastTransferCmd(ADC1, ENABLE);
ADC_DMACmd(ADC1, ENABLE);
ADC_Cmd(ADC1, ENABLE);
}
#ifdef USE_FULL_ASSERT
///**
// * @brief Reports the name of the source file and the source line number
// * where the assert_param error has occurred.
// * @param file: pointer to the source file name
// * @param line: assert_param error line source number
// * @retval None
// */
void assert_failed(uint8_t* file, uint32_t line)
{
/* User can add his own implementation to report the file name and line number,
ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
/* Infinite loop */
while (1)
{
}
}
#endif
/**
* @}
*/
/**
* @}
*/
/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/ |
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发表于 2015-8-15 21:45:37
