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TM4C1236 USB驱动u盘的问题

Other Parts Discussed in Thread: TM4C1236H6PM

请教一下,使用TM4C1236H6PM来做USB读写U盘的,采用D:\TI\TivaWare_C_Series-2.1.0.12573\examples\boards\dk-tm4c123g\usb_host_msc例程

目前发现4G,16G u盘可以识别到,但是8G,32G不能识别。更换多个品牌的U盘测试结果是一样的。

不知道是什么原因,请各位帮忙分析一下,需要修改什么吗。

非常感谢!