DeviceIoControl发送IOCTL_SCSI_PASS_THROUGH出现121错误

[oysoft]

我使用DeviceIoControl先USB 设备发送IOCTL_SCSI_PASS_THROUGH指令，结果出现121错误，121错误在说明是信号灯超时，问问大家如何解决？

	BOOL status = DeviceIoControl(hMassDevice, 
		IOCTL_SCSI_PASS_THROUGH, 	
		(LPVOID)&m_sptwb, 
		(DWORD)inbuffersize, 
		(LPVOID)&m_sptwb, 
		(DWORD)length, 
		(LPDWORD)&returned, 
		NULL);

[hellward]

介绍你一篇文章
http://dev.csdn.net/develop/article/17/17209.shtm

[飞天赤狐]

http://dev.csdn.net/develop/article/17/17209.shtm

[oysoft]

问题我自己解决了，是命令格式错误