AI8051U&&STC32F12K54İDMA1շʵ(泬ʱж)
1ƵΪ22.1184MHZ,Ϊ115200BPS

2½,ͨPC˷ݸMCU,DMA𴮿ڵĽ,
	ԭⲻͨ1з,ָʾһյ˶ٸֽڵ
	
3رע⣡

	User_DMA.h,һ߷
1DMA_Transmit_Sizeļ,һҪƺ,׼ȷ,Ȼһֱ
	DMA_UR1R_DONEֵһֱΪ0,Ҫô͸ߵλĴζȡڴ
	DMA_Transmit_Size
	
2˵һΪʲôҪDMA_UR1R_CFG=0X00
	Ϊ̳ϵ,DMA_UR1R_CFGλص,ǵDMA_UR1R_DONE
	DMA_UR1R_DONEHĴֵͻ,ҴĵַҲͷ
	ʼ
	
3У鲻Ҫ
	DMABufferĿռù,ոպ,ִֿܻض
	,ոպøֵͻһʹ治ȥ,Կռ仹Ҫ
