滑动均值滤波算法

在FOC开发过程中涉及到母线电压和温度传感器数据的滤波算法，特意记录一下这篇文档。

滑动均值滤波算法的实现原理非常简单。每次执行模拟量采集的时候去更新数组的数据，然后对数组进行求平均值。

uint16_t RVBS_CalcAvVbus( RDivider_Handle_t * pHandle ) { ADC_TypeDef * ADCx = pHandle->ADCx; ADC_HandleTypeDef * hadc = pHandle->hadc; uint32_t wtemp = 0; /* Configuration VBUS Sample Channel */ HAL_ADC_ConfigChannel(hadc,&pHandle->ADC_ChanConf); HAL_ADC_Start_DMA(hadc, (uint32_t*)&pHandle->ADCDataReg, 1); pHandle->aBuffer[pHandle->Index] = pHandle->ADCDataReg; for(uint8_t i ; i < pHandle->LowPassFilterBW ; i++ ) { wtemp += pHandle->aBuffer[i]; } pHandle->AvBusVoltage_d = (uint16_t)( wtemp / pHandle->LowPassFilterBW ); if(pHandle->Index < pHandle->LowPassFilterBW - 1) { pHandle->Index++; }else { pHandle->Index = 0; } pHandle->FaultState = RVBS_CheckFaultState( pHandle ); return pHandle->FaultState; }