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USB 转串口线问题

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发表于 2005-1-18 10:52:06 | 显示全部楼层 |阅读模式
操作系统:redhat 9.0 (windows 虚拟机)
内核: 2.4.20-8
usb转串口线: 高尖(High-Edeg)
产品型号:HE800P

没有安装驱动,直接将转串口线插上,出现信息:

  1. usb.c: USB device 2 (vend/prod 0x67b/0x2303) is not claimed by any active driver.
  2. usb.c: registered new driver serial
  3. usbserial.c: USB Serial support registered for Generic
  4. usbserial.c: USB Serial Driver core v1.4
  5. usbserial.c: USB Serial support registered for PL-2303
  6. usbserial.c: PL-2303 converter detected
  7. usbserial.c: PL-2303 converter now attached to ttyUSB0 (or usb/tts/0 for devfs)
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使用串口调试程序时(打开 /dev/ttyUSB0 正常   打开/dev/USB/ttyUSB0 出错),
发送信息显示成功,但接受端的串口没有收到任何信息
接受信息正确。

当关闭串口时,出现一下信息:

  1. Unable to handle kernel NULL pointer dereference at virtual address 00000014
  2. printing eip:
  3. cc880764
  4. *pde = 00000000
  5. Oops: 0000
  6. pl2303 usbserial parport_pc lp parport autofs pcnet32 mii keybdev mousedev hid input uhci usbcore ext3 jbd BusLogic sd_mod scsi_mod  
  7. CPU:    0
  8. EIP:    0060:[<cc880764>]    Not tainted
  9. EFLAGS: 00000006

  10. EIP is at uhci_reset_interrupt [uhci] 0x24 (2.4.20-8)
  11. eax: cbfc1000   ebx: c9a08380   ecx: c173a000   edx: 00000000
  12. esi: c17f5680   edi: c9a08380   ebp: 00000292   esp: c9a0dd80
  13. ds: 0068   es: 0068   ss: 0068
  14. Process com.o (pid: 2335, stackpage=c9a0d000)
  15. Stack: c9a08380 c17f5680 c173a1f8 00000282 cc8814e8 c9a08380 c9a08380 00000000
  16.        c9a08384 00000000 c97c401c c97c401c 00000000 cc86a47d c9a08380 cc8f1461
  17.        c9a08380 00000000 00000001 c97c401c c97c401c cc8e95c7 c97c401c c9838900
  18. Call Trace:   [<cc8814e8>] uhci_unlink_urb [uhci] 0x138 (0xc9a0dd90))
  19. [<cc86a47d>] usb_unlink_urb_Rf46ee7fc [usbcore] 0x3d (0xc9a0ddb4))
  20. [<cc8f1461>] pl2303_close [pl2303] 0xe1 (0xc9a0ddbc))
  21. [<cc8e95c7>] __serial_close [usbserial] 0x87 (0xc9a0ddd4))
  22. [<cc8e9680>] serial_close [usbserial] 0xa0 (0xc9a0dde4))
  23. [<c0183dae>] release_dev [kernel] 0x5ee (0xc9a0de00))
  24. [<c012eb1c>] __free_pte [kernel] 0x4c (0xc9a0de24))
  25. [<c0131187>] zap_pte_range [kernel] 0x137 (0xc9a0de30))
  26. [<c01841ff>] tty_release [kernel] 0xf (0xc9a0de74))
  27. [<c0147d62>] fput [kernel] 0x102 (0xc9a0de7c))
  28. [<c014633d>] filp_close [kernel] 0x4d (0xc9a0de98))
  29. [<c011f01c>] put_files_struct [kernel] 0x6c (0xc9a0deb0))
  30. [<c011f710>] do_exit [kernel] 0x110 (0xc9a0decc))
  31. [<c011f994>] do_group_exit [kernel] 0x54 (0xc9a0dee8))
  32. [<c01278fd>] get_signal_to_deliver [kernel] 0x19d (0xc9a0def8))
  33. [<c01092f4>] do_signal [kernel] 0x64 (0xc9a0df20))
  34. [<c0125c17>] schedule_timeout [kernel] 0x67 (0xc9a0df64))
  35. [<c0125ba0>] process_timeout [kernel] 0x0 (0xc9a0df84))
  36. [<c0125d85>] sys_nanosleep [kernel] 0x115 (0xc9a0df9c))
  37. [<c0109570>] signal_return [kernel] 0x14 (0xc9a0dfc0))


  38. Code: 8b 52 14 83 ea 1c 8b 42 04 8b 5a 08 25 00 00 00 2f 0d 00 00
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请各位帮忙看看是什么原因。
或者推荐一款Linux支持的USB转串口线。
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