loopback 和no loopback mode 有什么区别?? 谢谢
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loopback 和no loopback mode 有什么区别?? 谢谢
如何将内部TX 和RX 连接在一起呢? 如果我用跳线将SCIA的发送管脚和接收管脚相连 这不也是 TX RX 连接吗? 这就不属于loop back了吗?