用論壇的例程模擬打印機(jī)，模擬成功，因?yàn)闆]安裝驅(qū)動(dòng)，所以提示找不到驅(qū)動(dòng)

我對自己的打印機(jī)提取了設(shè)備描述符和配置描述符后，在放在程序中，這樣子模擬的時(shí)候電腦根本無法識別設(shè)備

另外那個(gè)打印機(jī)ID（設(shè)備ID）

unsigned char code buffer_id[]= "\x0\x39MFG:HP;CMD:GDI;MDL:HP_LaserJet_5N;CLS:PRINTER;MODE:GDI;";設(shè)備ID

這個(gè)設(shè)備ID是由什么組成的？我要怎要才能在我的打印機(jī)上查到或者獲取到呢

這個(gè)你要看下1284協(xié)議，USB PRINT類協(xié)議是這樣寫的： 4.2.1 GET_DEVICE_ID (bRequest = 0) This class-specific request returns a device ID string that is compatible with IEEE 1284. See IEEE 1284 fand formatting information. A printer with multiple configurations, interfaces, or alternate settings may comultiple IEEE 1284 device ID strings. The wValue field is used to specify a zero-based configuration ind high-byte of the wIndex field is used to specify the zero-based interface index. The low-byte of the wInde used to specify the zero-based alternate setting. The device ID string is returned in the following format:

你可以用BUSHOUND軟件抓一下PC對你的打印機(jī)枚舉的過程，應(yīng)該是可以抓到設(shè)備描述符、配置描述符和設(shè)備ID的。設(shè)備ID是通過{ 0xA1, 0x00, 0x00, 0x00, 0x00, 0x00, 0xF1, 0x03 }獲取

模擬打印機(jī)成功了嗎？