ADC.rar_STM32F103 adc dma_ad采样滤波算法_exact4w5

#include "adc.h" #include "delay.h" #include "stm32f10x_dma.h" ///4.548786990135964 ///1.137196747533991 AdcStrTypedef ADC; volatile float Scal[8]; const float Bit10ScalDefault[]={BIT10SCAL0,BIT10SCAL1,BIT10SCAL2,BIT10SCAL3,BIT10SCAL4,BIT10SCAL5,BIT10SCAL6,BIT10SCAL7}; const float Bit12ScalDefault[]={BIT12SCAL0,BIT12SCAL1,BIT12SCAL2,BIT12SCAL3,BIT12SCAL4,BIT12SCAL5,BIT12SCAL6,BIT12SCAL7}; volatile float AdcScal[2][8]; volatile unsigned long adc_ms; void RCC_ADC_Init(void) { RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE); RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE); RCC_ADCCLKConfig(RCC_PCLK2_Div6); //72M/6=12,ADC时钟不能超过14M RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE); //使能DMA传输 } void ADC_16Channel_Init(void) { ADC_InitTypeDef ADC_InitStructure;//定义ADC采集的结构体 GPIO_InitTypeDef GPIO_InitStructure; GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN; GPIO_Init(GPIOA, &GPIO_InitStructure); ADC_DeInit(ADC1); /* ADC1 configuration ------------------------------------------------------*/ ADC_InitStructure.ADC_Mode = ADC_Mode_Independent; //ADC工作模式:ADC1和ADC2工作在独立模式 ADC_InitStructure.ADC_ScanConvMode =ENABLE; //模数转换工作在扫描模式 ADC_InitStructure.ADC_ContinuousConvMode = ENABLE; //模数转换工作在连续模式 ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None; //外部触发关闭 ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right; //ADC数据右对齐 ADC_InitStructure.ADC_NbrOfChannel = 8; //顺序进行转换的ADC通道的数目 ADC_Init(ADC1, &ADC_InitStructure); //根据ADC_InitStructADC指定的参数进行初始化外设ADCx寄存器 /* ADC1 regular channel11 configuration */ //设置指定ADC的规则组转换通道，设置它们的转换顺序和通道 //ADC1,ADC通道x,规则采样顺序值y,采样时间为239.5周期 ADC_RegularChannelConfig(ADC1, ADC_Channel_0, 1, ADC_SampleTime_239Cycles5 ); ADC_RegularChannelConfig(ADC1, ADC_Channel_1, 2, ADC_SampleTime_239Cycles5 ); // PA5 土湿1 ADC_RegularChannelConfig(ADC1, ADC_Channel_2, 3, ADC_SampleTime_239Cycles5 ); // PA6 ADC_RegularChannelConfig(ADC1, ADC_Channel_3, 4, ADC_SampleTime_239Cycles5 ); ADC_RegularChannelConfig(ADC1, ADC_Channel_4, 5, ADC_SampleTime_239Cycles5 ); ADC_RegularChannelConfig(ADC1, ADC_Channel_5, 6, ADC_SampleTime_239Cycles5 ); ADC_RegularChannelConfig(ADC1, ADC_Channel_6, 7, ADC_SampleTime_239Cycles5 ); ADC_RegularChannelConfig(ADC1, ADC_Channel_7, 8, ADC_SampleTime_239Cycles5 ); //开启ADC的DMA支持(要实现DMA功能,还需独立配置DMA通道参数) ADC_DMACmd(ADC1, ENABLE); /* Enable ADC1 */ ADC_Cmd(ADC1, ENABLE); //使能指定的ADC1 /* Enable ADC1 reset calibaration register */ ADC_ResetCalibration(ADC1); //复位指定的ADC1的校准寄存器 /* Check the end of ADC1 reset calibration register */ while(ADC_GetResetCalibrationStatus(ADC1)); //获取ADC1复位校准寄存器的状态，设置状态则等待 /* Start ADC1 calibaration */ ADC_StartCalibration(ADC1); //开始指定ADC1的校准程序 /* Check the end of ADC1 calibration */ while(ADC_GetCalibrationStatus(ADC1)); //获取指定ADC的校准程序，设置状态则等待 } void DMA_Configuration(void) { /* ADC1 DMA1 Channel Config */ DMA_InitTypeDef DMA_InitStructure; DMA_DeInit(DMA1_Channel1); //将DMA通道1的寄存器重设为缺省值 DMA_InitStructure.DMA_PeripheralBaseAddr = (u32)&ADC1->DR; //DMA外设ADC基地址 DMA_InitStructure.DMA_MemoryBaseAddr = (u32)&ADC.buf; //DMA内存基地址 DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC; //内存作为数据传输的目的地 DMA_InitStructure.DMA_BufferSize = AD_CHANNEL*AD_BUF_LEN; //DMA通道DMA缓存的大小 DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable; //外设地址寄存器不变 DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable; //内存地址寄存器递增 DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord; //数据宽度为16位 DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord; //数据宽度为16位 DMA_InitStructure.DMA_Mode = DMA_Mode_Circular; //工作在循环缓存模式 DMA_InitStructure.DMA_Priority = DMA_Priority_High; //DMA通道X拥有高优先级 DMA_InitStructure.DMA_M2M = DMA_M2M_Disable; //DMA通道 x没有设置为内存到内存传输 DMA_Init(DMA1_Channel1, &DMA_InitStructure); //根据DMA_InitStruct指定的参数初始化DMA的通道 } void ADC_Work_Init(void) { RCC_ADC_Init(); ADC_16Channel_Init(); DMA_Configuration(); /* Start ADC1 Software Conversion */ ADC_SoftwareStartConvCmd(ADC1, ENABLE);//使能指定的ADC的软件转换启动功能 DMA_Cmd(DMA1_Channel1, ENABLE);//使能指定的通道 } unsigned short BubbleSortAverage( volatile unsigned short *p,unsigned short len ) { volatile unsigned short i,j,tem,aver; for ( i = 0; i < (len - 1 ); i++ ) { for ( j = 0; j < ( len - i - 1 ); j++ ) { if ( p[j] > p[j+1] ) { tem = p[j+1]; p[j+1] = p[j]; p[j] = tem; }else{} } } aver &=0; for ( i = (len/2-2); i < (len/2+3); i++ ) { aver += p[i]; } aver /= 5; return aver; } void AdcDataChange( void ) { volatile unsigned long diff; volatile unsigned short buf[AD_BUF_LEN],i,j,aver; diff = DvalueTime(adc_ms); if ( diff > 100 ) { adc_ms = sys_ms; for ( i = 0; i < AD_CHANNEL; i++ ) { for ( j = 0; j < AD_BUF_LEN; j++ ) buf[j] = ADC.buf[j][i]; aver = BubbleSortAverage(buf,AD_BUF_LEN); ADC.sampbit12[i] = aver; //ADC.buf10bit[i] = aver * Scal[i]*1000; ADC.buf10bit[i] = (aver / AdcScal[0][i])+0.5; if ( ADC.buf10bit[i] < 5 ) ADC.buf10bit[i] = 0; ADC.buf12bit[i] = aver / AdcScal[1][i]; } }else{} }