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使用TM4C129 的USB作为host时是不是只需要将USB设备的D+、D-信号线直接连接到控制器的PL6和PL7引脚，然后5V给设备供电就可以了？
一般还会多加个ID脚，给你官方开发板的原理图看看
好的 谢谢
