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100的问题!!!
各位大侠,小弟在开发u盘时碰到一个问题,这个问题好像与
BULK―ONLY协议有出入,大家帮忙看看,为什么PC送的数据没送完,就又发送了命令了,中间也没有CSW!! 13 DO 55 53 42 43 - 08 10 7d 81 USBC.... 2.0ms 00 00 01 00 - 00 00 0a 2a .......* 00 00 00 00 - 01 00 00 80 ........ 00 00 00 00 - 00 00 00 ....... 13 DO f8 ff ff ff - 00 00 00 00 ........ 9.0sc 00 00 00 00 - 00 00 00 00 ........ 00 00 00 00 - 00 00 00 00 ........ 00 00 00 00 - 00 00 00 00 ........ 00 00 00 00 - 00 00 00 00 ........ 00 00 00 00 - 00 00 00 00 ........ (下面省略一部分数据) 00 00 00 00 - 00 00 00 00 ........ 00 00 00 00 - 00 00 00 00 ........ 00 00 00 00 - 00 00 00 00 ........ 00 00 00 00 - 00 00 00 00 ........ 00 00 00 00 - 00 00 00 00 ........ 00 00 00 00 - 00 00 00 00 ........ 以上共发送了21120个数据,然后主机又发送了一个CBW 13 DO 55 53 42 43 - 88 f5 37 81 USBC..7. 236ms 00 00 01 00 - 00 00 0a 2a .......* 00 00 00 00 - de 00 00 80 ........ 00 00 00 00 - 00 00 00 ....... 13 DO f8 ff ff ff - 00 00 00 00 ........ 9.7sc 00 00 00 00 - 00 00 00 00 ........ 00 00 00 00 - 00 00 00 00 ........ 00 00 00 00 - 00 00 00 00 ........ 请教各位大哥,出现这种问题的原因是什么?为什么PC连数据都不发送完后再发送下一个CBW呢?? |
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