STM32空闲中断+DMA解决接收不定长数据问题

http://blog.csdn.net/shu_8708/article/details/73480939函数 串口的中断类型:ui [cpp]  view plain  copy #define USART_IT_PE                          ((uint16_t)0x0028)   #define USART_IT_TXE                      

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