usb bulk问题

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usb bulk问题

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万朋朋pengpeng
Contributor I

LPC54606的高速usb实现自定义设备,bulk传输已经实现,但是有问题

我的实现思路是:设立端点空闲标志,发送请求成功后,标志位设置为发送中,回调函数中设置为发送完成。但是有时会出现发送请求成功,但是端点回调函数没有被调用的问题,导致标志位不能被改变,所以不能继续发送。为保证数据发送完成同时提高速率,有什么好的建议吗?

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jeremyzhou
NXP Employee
NXP Employee

Hi 万朋朋 pengpeng,

非常感谢使用NXP产品,很高兴为你提供技术支持!
请问你是基于SDK中USB stack实现USB应用的吗?
还有你的工程基于MSC工程为模板修改的呢还是从零开始创建的,最好你可以介绍一下你的工程的实现过程,方便问题查找。


Have a great day,
TIC

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