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在做串口透传的时候 simpleBLECentral 第一次发数据的时候 simpleBLEPeripheral能收到数据 但是之后怎么发送都收不到数据了！！！
并且在第一次发送时发送在规定长度内的数据 后面的数据会丢失？？？
用抓包工具看发送的实际帧数据
