大家好，我用的STM32带有otg模块的单片机，在U盘写扇区函数种调用SCSI协议中的WRITE(1)命令，查了好几遍命令块格式应该符合协议要求，但写入数据后--假如整个扇区都写0x55，只能有些字节变为0x55，有些字节改变为其他值。大家有没有相关的经验？
把写之后扇区数据贴出来，
写一个扇区的0x44，读出一个扇区的：
44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 FE AB 65 00 44 44 44 44 44 44 44 44 44 44 44 44 44 44 EB 56 44 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 37 2E 37 37 14 AA 55 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 44 44 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 33 D7 00 00 00 00 00 00 00 00 00 00 00 00 00 00 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 33 D7 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 44 44 44 44 44 44 44 44 44 44 44 44 44 44 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 44 44 44 44 98 0D 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 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 44 44 44 44 98 0D 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 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 44 44 44 44 98 0D 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 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 44 44 44 44 98 0D 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
现在这个写U盘的东西卡在这好几天了，恳请各位高手给一些建议。 |
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楼主
