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我现在要做串口透传，蓝牙就进入不了低功耗了，想请教一下，如何可以做低功耗的透传呢？
可以用串口中断唤醒，或者休眠之前将串口配置成普通IO且输入方向 中断，唤醒后配置成串口，接收数据完成后，超时配置成IO口休眠。
串口通信数据量不能多，分批次传输！
