Bulkonly协议里设备怎么完成初始化？

Bulkonly协议里设备怎么完成初始化？

Bulkonly协议头上便说
This specification addresses Bulk-Only Transport, or in other words, transport of command, data, and status
occurring solely via Bulk endpoints (not via Interrupt or Control endpoints). This specification only uses the
default pipe to clear a STALL condition on the Bulk endpoints and to issue class-specific requests as defined
below.

那设备枚举和初始化阶段时，Host还不知道设备是Bulkonly的时候呢？

clear a STALL condition 是啥意思

Bulkonly协议里设备怎么完成初始化？

Bulkonly协议头上便说
This specification addresses Bulk-Only Transport, or in other words, transport of command, data, and status
occurring solely via Bulk endpoints (not via Interrupt or Control endpoints). This specification only uses the
default pipe to clear a STALL condition on the Bulk endpoints and to issue class-specific requests as defined
below.

那设备枚举和初始化阶段时，Host还不知道设备是Bulkonly的时候呢？

clear a STALL condition 是啥意思

也就是说，设备枚举的时候，用端口0，还有Bulk-Only Reset的时候，清除Bulk端点STALL状态的时候，都用端口0。
STALL状态就是由于各种原因断点不想工作了，就STALL了。
需要用CLEAR FEATURE清除这种状态。

不知道bulkonly 就用control transfer撒