在ttyUSB0上建立与比格骨黑串行连接的问题
在ttyUSB0上建立与比格骨黑串行连接的问题
提问于 2013-12-01 04:52:02
我试过使用minicom，Putty，screen和cKermit，但都没有效果。从dmesg | grep tty的输出看，连接似乎是间歇性的。
[1627865.078080] usb 5-2: Product: AM335x USB
[1627865.078086] usb 5-2: Manufacturer: Texas Instruments
[1627865.152124] rndis_host 5-2:1.0: usb0: register 'rndis_host' at usb-0000:00:13.0-2, RNDIS device, 9a:1f:85:1c:3d:0e
[1627865.398299] userif-2: sent link down event.
[1627865.398309] userif-2: sent link up event.<6>[1627905.546191] usb 5-2: USB disconnect, device number 41
[1627905.547204] rndis_host 5-2:1.0: usb0: unregister 'rndis_host' usb-0000:00:13.0-2, RNDIS device
[1627905.748089] userif-2: sent link down event.
[1627905.748098] userif-2: sent link up event.<6>[1627910.599519] usb 5-2: new full-speed USB device number 42 using ohci_hcd
**[1627910.758329] usb 5-2: not running at top speed; connect to a high speed hub
[1627910.768319] usb 5-2: New USB device found, idVendor=0451, idProduct=6141
[1627910.768331] usb 5-2: New USB device strings: Mfr=33, Product=37, SerialNumber=0
[1627910.768340] usb 5-2: Product: AM335x USB
[1627910.768346] usb 5-2: Manufacturer: Texas Instruments
[1627910.842502] rndis_host 5-2:1.0: usb0: register 'rndis_host' at usb-0000:00:13.0-2, RNDIS device, 9a:1f:85:1c:3d:0e
[1627911.082551] userif-2: sent link down event.
[1627911.082555] userif-2: sent link up event.<6>[1627921.042308] usb 5-2: USB disconnect, device number 42
[1627921.043378] rndis_host 5-2:1.0: usb0: unregister 'rndis_host' usb-0000:00:13.0-2, RNDIS device**
[1627921.243451] userif-2: sent link down event.
[1627921.243461] userif-2: sent link up event.<6>[1627925.167815] usb 5-2: new full-speed USB device number 43 using ohci_hcd
[1627925.326657] usb 5-2: not running at top speed; connect to a high speed hub
[1627925.336645] usb 5-2: New USB device found, idVendor=0451, idProduct=6141
[1627925.336658] usb 5-2: New USB device strings: Mfr=33, Product=37, SerialNumber=0
[1627925.336666] usb 5-2: Product: AM335x USB
[1627925.336673] usb 5-2: Manufacturer: Texas Instruments
[1627925.411023] rndis_host 5-2:1.0: usb0: register 'rndis_host' at usb-0000:00:13.0-2, RNDIS device, 9a:1f:85:1c:3d:0e
[1627925.665530] userif-2: sent link down event.
[1627925.665540] userif-2: sent link up event.<3>[1627960.208500] hub 5-0:1.0: unable to enumerate USB device on port 3
[1627960.448125] usb 2-3: new high-speed USB device number 51 using ehci_hcd
[1627960.581809] usb 2-3: New USB device found, idVendor=14cd, idProduct=121f
[1627960.581814] usb 2-3: New USB device strings: Mfr=1, Product=3, SerialNumber=2
[1627960.581816] usb 2-3: Product: Mass Storage Device
[1627960.581818] usb 2-3: Manufacturer: Generic
[1627960.581820] usb 2-3: SerialNumber: 121F20110712
[1627960.582540] scsi32 : usb-storage 2-3:1.0
[1627961.579368] scsi 32:0:0:0: Direct-Access Mass Storage Device 1.00 PQ: 0 ANSI: 0 CCS
[1627961.580592] sd 32:0:0:0: Attached scsi generic sg3 type 0
[1627961.871287] sd 32:0:0:0: [sdc] 15644672 512-byte logical blocks: (8.01 GB/7.45 GiB)
[1627961.871786] sd 32:0:0:0: [sdc] Write Protect is off
[1627961.871799] sd 32:0:0:0: [sdc] Mode Sense: 03 00 00 00
[1627961.872313] sd 32:0:0:0: [sdc] No Caching mode page found
[1627961.872325] sd 32:0:0:0: [sdc] Assuming drive cache: write through
[1627961.875901] sd 32:0:0:0: [sdc] No Caching mode page found
[1627961.875913] sd 32:0:0:0: [sdc] Assuming drive cache: write through
[1627961.876801] sdc: sdc1 sdc2
[1627961.883007] sd 32:0:0:0: [sdc] No Caching mode page found
[1627961.883019] sd 32:0:0:0: [sdc] Assuming drive cache: write through
[1627961.883028] sd 32:0:0:0: [sdc] Attached SCSI removable disk
[1627987.679657] usb 5-2: USB disconnect, device number 43
[1627987.680127] rndis_host 5-2:1.0: usb0: unregister 'rndis_host' usb-0000:00:13.0-2, RNDIS device
[1627987.880125] userif-2: sent link down event.
[1627987.880135] userif-2: sent link up event.<6>[1636287.932125] usb 2-3: USB disconnect, device number 51
[1636372.495480] usb 5-3: new full-speed USB device number 45 using ohci_hcd
[1636372.673303] usb 5-3: New USB device found, idVendor=0403, idProduct=6001
[1636372.673316] usb 5-3: New USB device strings: Mfr=1, Product=2, SerialNumber=3它看起来是从这个输出连接起来的，但是当我试图连接到/dev/ttyUSB0时，它不识别ttyUSB0。
我也尝试过更改权限，就像在另一篇文章中建议的那样，但没有效果。当我试图以115200波特的速度与/dev/ttyUSB0上的Putty连接时，当我单击connect时，没有任何视觉效果。
我也使用苔藓，但我没有看到USB0在它的下拉。任何关于搜索地点的提示或指导都是非常感谢的。
回答 2
Ask Ubuntu用户
发布于 2013-12-02 00:17:17
根据beaglebone 支援场地，您不需要任何特殊的驱动程序就可以在linux上工作，但是您可能需要运行它们提供的脚本(mkudevrule.sh)来创建一些udev规则。并检查您的USB电缆的适当联系(我知道这听起来微不足道，但它只需要几秒钟来检查，可以节省你很多小时的疑难解答)。
Ask Ubuntu用户
发布于 2014-01-06 22:36:04
我有同样的问题，原来是迷你usb电缆(可能没有提供足够的电力)。你可能想试着用你找到的最短的电缆。
页面原文内容由Ask Ubuntu提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://askubuntu.com/questions/384443
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