ucos的DMA以及串口问题如何解决

1. 我原先是库函数方式没有操作系统实现内部AD+DMA转换，把他移植到ucos中初始化，如果只是用AD转换可以工作，如果用DMA方式就不工作，DMA配置移植到ucos中还需要修改吗，求大神指教，，
2. 我用的是STM32f4，怎么串口不配置他就可以工作，困扰了很多天了，郁闷，不配置就可以用串口调试工具或者终端来发送接收数据，为啥，，求解[C] 纯文本查看 复制代码
/*DMA·???????AD×???*/u16 ad_dma[2]={0};void DMA_Config(void){  DMA_InitTypeDef DMA_InitStruct;ADC_InitTypeDef  ADC_InitStructure;  ADC_CommonInitTypeDef ADC_CommonInitStructure;  RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA2,ENABLE);ADC_DeInit();DMA_DeInit(DMA2_Stream0);//????DMA2?????÷0//DMA_InitStruct.DMA_PeripheralBaseAddr=ADC_DR_ADDR;  DMA_InitStruct.DMA_Channel = DMA_Channel_0;    DMA_InitStruct.DMA_PeripheralBaseAddr =0X4001204C;//?¨??DMA ?¨?????è?ù???· ADC1_BASE+0X04C; ADC->DR???·??ADC1-ADC2-ADC3??0X40012000-0X400123FF; ??????ADC1??0X000-0X04C;   ADC2??0X100-0X14C;  ADC3??0X200-0X24C  DMA_InitStruct.DMA_Memory0BaseAddr = (u32)&ad_dma;//??±ê?????????¨??DMA?¨???????÷???·  DMA_InitStruct.DMA_DIR = DMA_DIR_PeripheralToMemory;  DMA_InitStruct.DMA_BufferSize =2;  DMA_InitStruct.DMA_PeripheralInc = DMA_PeripheralInc_Disable;//?±?°???è?????÷???·??±?  DMA_InitStruct.DMA_MemoryInc = DMA_MemoryInc_Enable;// ?±?°?????÷???·??±?  DMA_InitStruct.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;//?¨?????è?????í????16??  DMA_InitStruct.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;//?¨???????÷?????í??16??  DMA_InitStruct.DMA_Mode = DMA_Mode_Circular;//DMA?¨????×÷???????·??????????  DMA_InitStruct.DMA_Priority = DMA_Priority_High;//????DMA?¨???????÷???????÷????  DMA_InitStruct.DMA_FIFOMode = DMA_FIFOMode_Disable;//DMA?¨??????????           DMA_InitStruct.DMA_FIFOThreshold = DMA_FIFOThreshold_HalfFull;  DMA_InitStruct.DMA_MemoryBurst = DMA_MemoryBurst_Single;  DMA_InitStruct.DMA_PeripheralBurst = DMA_PeripheralBurst_Single;  DMA_Init(DMA2_Stream0, &DMA_InitStruct);  DMA_Cmd(DMA2_Stream0, ENABLE);  ADC_CommonInitStructure.ADC_Mode = ADC_Mode_Independent;  ADC_CommonInitStructure.ADC_Prescaler = ADC_Prescaler_Div2;  ADC_CommonInitStructure.ADC_DMAAccessMode = ADC_DMAAccessMode_Disabled;  ADC_CommonInitStructure.ADC_TwoSamplingDelay = ADC_TwoSamplingDelay_5Cycles;  ADC_CommonInit(&ADC_CommonInitStructure);  ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;//??????12??   ADC_InitStructure.ADC_ScanConvMode = ENABLE;//?¨?è×????????????????¨???????????????à?¨???ò?è????ENABLE,  ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;//DISABLE;        //????×??????? /???????ò??????×?????×??????????????è????????·???  ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None;//??????????·????í????·?×???  ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_T1_CC1; //??????????·???????  ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;//??????????????×???????  ADC_InitStructure.ADC_NbrOfConversion = 2;//???¨?????ò???????ò×?????ADC?¨????????  ADC_Init(ADC1, &ADC_InitStructure);  ADC_RegularChannelConfig(ADC1, ADC_Channel_8, 1, ADC_SampleTime_3Cycles);//ADC?????¨??8?????ò?÷????1???ù???¨???????ù????  ADC_RegularChannelConfig(ADC1, ADC_Channel_9, 2, ADC_SampleTime_3Cycles);//ADC?????¨??9?????ò?÷????2???ù???¨???????ù????  ADC_DMARequestAfterLastTransferCmd(ADC1, ENABLE);  ADC_DMACmd(ADC1, ENABLE);  ADC_Cmd(ADC1, ENABLE);  ADC_SoftwareStartConv(ADC1);     //?í??????×???}