/**  * 读磁盘容量命令  * @param *buf 数据缓冲区指针  * @return 0 - 成功  */ short ufiReadCapacity(BYTE *buf) {     READ_CAPACITY *readCapacity;     BYTE i;     CBW *cbw;       //设置Bulk-Only协议参数     cbw = &ufiCmdRunning.cbw;     cbw->dCBW_Signature = CBW_SIGNATURE;     cbw->dCBW_Tag = 0x60a624de;     cbw->dCBW_DataXferLen = 0x08;     cbw->bCBW_Flag=0x80;     cbw->bCBW_LUN=0;     cbw->bCBW_CDBLen = 0x0A;//sizeof(CDB_RBC);       //设置UFI命令参数     readCapacity = &(cbw->cdbRBC.ufiReadCapacity);     readCapacity->OperationCode = 0x25;     for(i = 0; i < sizeof(readCapacity->Reserved); i++)        readCapacity->Reserved[i] = 0;       //设置状态扫描函数所需要的参数     ufiCmdRunning.funUfiCmd = bulkRead;     ufiCmdRunning.pBuf = buf;     ufiCmdRunning.state = UFI_STATE_BEGIN;       //通过Bulk端口发送读命令     bulkRead((unsigned char *)&ufiCmdRunning.cbw, buf, (unsigned char*)&ufiCmdRunning.csw);     return 0; }

本文转自 tywali 51CTO博客，原文链接：http://blog.51cto.com/lancelot/317091，如需转载请自行联系原作者