rt1052 USB 传输速度慢

[wandongli]

因为项目需要所以我使用SDK2.5 提供HID的参考历程进行了修改，修改为自定义设备。设备描述符的主要信息如下：

其中主要的修改为，将端点类型修改为bulk 模式传输。

我使用Libusb 进行上位机的开发，PC端一直读，发现速度很慢，如下：

PC 一直读的时候，设备端使用for一直发送如下：

其中一直读的时候整体的速度很慢，请教一下是我设备端发送数据的方式不对吗？导致发送很慢。

[wandongli]

HI 

     如你所说，我去掉printf的输出确实快很多，但是任然没有达到我预期的速度，我应该怎样做可以进一步的提高速度呢？另外请问一下我这样通过for的方式一直发是否可行，是否有更加可靠且快速的响应PC一直读的操作方法呢 ？

[Hui_Ma]

Hi,

Bulk传输最大包大小设置为64字节，通过while()循环应该会快一些。

Have a great day,
Mike

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[Hui_Ma]

Hi,

Please mask the printf function within the while loop and try.

Wish it helps.

Have a great day,
Mike

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