请教28377D usb接口如果拆入USB3.0 U盘能正常传输数据吗? 不能正常的话,是数据错误还是数据无法传输?
user4522357:
28377D手册里写的可以作为23.3.1 Operation as a Device23.3.2 Operation as a Host您确定不能作为主机?
Susan Yang:
理论上可以的,28377D 支持usb2.0,但一般USB3.0 U盘可以向下兼容USB2.0
user4522357:
回复 Susan Yang:
如果USB库函数运行到 USBHCDPipeRead()过程中 拔掉U盘,会怎么样 貌似在USBHCDMain()中 出不来
Susan Yang:
回复 user4522357:
还是昨天那个那个问题?
All time critical operations are handled in interrupt context but all blocking operations are run from the this function to allow them to block and wait for completion without holding off other interrupts.一直在USBHCDMain()中 出不来的话,看起来像是阻塞了,建议使用 USBHCDPipeReadNonBlocking
user4522357:
回复 Susan Yang:
USBHCDMain()函数内容看不到源代码怎么改为USBHCDPipeReadNonBlocking