WhyCan Forum(哇酷开发者社区)

黄粱梦

会员

注册时间： 2020-03-17

已发帖子： 45

积分： 39

A33接SL2.1 USB HUB芯片, 扩展出来的四个口接U盘都可以, 但是有两个口接AIR720 4G模块出错

SL2.1 USB HUB这里买的: https://item.szlcsc.com/225853.html

第一个,第三个口插入AIR720提示是这样的:

[ 7148.309254] usb 1-1-port1: Cannot enable. Maybe the USB cable is bad?
[ 7149.499258] usb 1-1-port1: Cannot enable. Maybe the USB cable is bad?
[ 7150.689255] usb 1-1-port1: Cannot enable. Maybe the USB cable is bad?
[ 7151.879253] usb 1-1-port1: Cannot enable. Maybe the USB cable is bad?
[ 7151.885893] usb 1-1-port1: unable to enumerate USB device

第二个,第四个口插入AIR720提示是这样的:

[ 7407.579072] usb 1-1.2: new high-speed USB device number 37 using ehci-platform
[ 7407.736996] rndis_host 1-1.2:1.0 eth1: register 'rndis_host' at usb-1c1a000.usb-1.2, RNDIS device, ac:1f:e8:ad:df:e0
[ 7407.802040] option 1-1.2:1.2: GSM modem (1-port) converter detected
[ 7407.843663] usb 1-1.2: GSM modem (1-port) converter now attached to ttyUSB0
[ 7407.861566] option 1-1.2:1.3: GSM modem (1-port) converter detected
[ 7407.894022] usb 1-1.2: GSM modem (1-port) converter now attached to ttyUSB1
[ 7407.911665] option 1-1.2:1.4: GSM modem (1-port) converter detected
[ 7407.944312] usb 1-1.2: GSM modem (1-port) converter now attached to ttyUSB2

黄粱梦

会员

注册时间： 2020-03-17

已发帖子： 45

积分： 39

Re: A33接SL2.1 USB HUB芯片, 扩展出来的四个口接U盘都可以, 但是有两个口接AIR720 4G模块出错

神奇了, 四个口都能接HUB, 然后AIR720接HUB上面都可以识别, 而且四个口都可以, 常理无法解释.

黄粱梦

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注册时间： 2020-03-17

已发帖子： 45

积分： 39

Re: A33接SL2.1 USB HUB芯片, 扩展出来的四个口接U盘都可以, 但是有两个口接AIR720 4G模块出错

[  694.238199] ftdi_sio ttyUSB0: FTDI USB Serial Device converter now disconnected from ttyUSB0
[  694.246978] ftdi_sio 1-1.1:1.0: device disconnected
[  695.709231] usb 1-1: reset high-speed USB device number 2 using ehci-platform
[  696.239112] usb 1-1.2: new full-speed USB device number 20 using ehci-platform
[  696.400704] ftdi_sio 1-1.2:1.0: FTDI USB Serial Device converter detected
[  696.407893] usb 1-1.2: Detected FT232RL
[  696.443639] usb 1-1.2: FTDI USB Serial Device converter now attached to ttyUSB0
[  697.504216] usb 1-1.2: USB disconnect, device number 20
[  697.511002] ftdi_sio ttyUSB0: FTDI USB Serial Device converter now disconnected from ttyUSB0
[  697.519783] ftdi_sio 1-1.2:1.0: device disconnected
[  699.389114] usb 1-1.3: new full-speed USB device number 21 using ehci-platform
[  699.550647] ftdi_sio 1-1.3:1.0: FTDI USB Serial Device converter detected
[  699.557841] usb 1-1.3: Detected FT232RL
[  699.593963] usb 1-1.3: FTDI USB Serial Device converter now attached to ttyUSB0
[  699.929174] musb-hdrc musb-hdrc.1.auto: VBUS_ERROR in b_idle (98, VALID), retry #1, port1 00000100
[  700.409761] usb 1-1: USB disconnect, device number 2
[  700.414760] usb 1-1.3: USB disconnect, device number 21
[  700.429701] ftdi_sio ttyUSB0: FTDI USB Serial Device converter now disconnected from ttyUSB0
[  700.438286] ftdi_sio 1-1.3:1.0: device disconnected
[  700.819152] usb 1-1: new high-speed USB device number 22 using ehci-platform
[  701.011544] hub 1-1:1.0: USB hub found
[  701.015669] hub 1-1:1.0: 4 ports detected
[  701.359119] usb 1-1.3: new full-speed USB device number 23 using ehci-platform
[  701.520660] ftdi_sio 1-1.3:1.0: FTDI USB Serial Device converter detected
[  701.527867] usb 1-1.3: Detected FT232RL
[  701.563356] usb 1-1.3: FTDI USB Serial Device converter now attached to ttyUSB0
[  701.689200] musb-hdrc musb-hdrc.1.auto: VBUS_ERROR in b_idle (98, VALID), retry #1, port1 00000100
[  702.169752] usb 1-1: USB disconnect, device number 22
[  702.174837] usb 1-1.3: USB disconnect, device number 23
[  702.189715] ftdi_sio ttyUSB0: FTDI USB Serial Device converter now disconnected from ttyUSB0
[  702.198294] ftdi_sio 1-1.3:1.0: device disconnected
[  702.579113] usb 1-1: new high-speed USB device number 24 using ehci-platform
[  702.771522] hub 1-1:1.0: USB hub found
[  702.775649] hub 1-1:1.0: 4 ports detected
[  703.119137] usb 1-1.3: new full-speed USB device number 25 using ehci-platform
[  703.280713] ftdi_sio 1-1.3:1.0: FTDI USB Serial Device converter detected
[  703.287929] usb 1-1.3: Detected FT232RL
[  703.324497] usb 1-1.3: FTDI USB Serial Device converter now attached to ttyUSB0

[  769.369117] usb 1-1.4: new high-speed USB device number 36 using ehci-platform
[  769.522903] hub 1-1.4:1.0: USB hub found
[  769.530056] hub 1-1.4:1.0: 4 ports detected
[  771.299487] usb 1-1.4: USB disconnect, device number 36
[  861.919114] usb 1-1.1: new full-speed USB device number 37 using ehci-platform
[  862.077748] cp210x 1-1.1:1.0: cp210x converter detected
[  862.109976] usb 1-1.1: cp210x converter now attached to ttyUSB0
[  863.937551] usb 1-1.1: USB disconnect, device number 37
[  863.944328] cp210x ttyUSB0: cp210x converter now disconnected from ttyUSB0
[  863.951527] cp210x 1-1.1:1.0: device disconnected
[  865.949109] usb 1-1.2: new full-speed USB device number 38 using ehci-platform
[  866.104481] cp210x 1-1.2:1.0: cp210x converter detected
[  866.131792] usb 1-1.2: cp210x converter now attached to ttyUSB0
[  867.189024] usb 1-1.2: USB disconnect, device number 38
[  867.195830] cp210x ttyUSB0: cp210x converter now disconnected from ttyUSB0
[  867.203046] cp210x 1-1.2:1.0: device disconnected
[  868.959121] usb 1-1.3: new full-speed USB device number 39 using ehci-platform
[  869.114441] cp210x 1-1.3:1.0: cp210x converter detected
[  869.141765] usb 1-1.3: cp210x converter now attached to ttyUSB0
[  869.940474] usb 1-1.3: USB disconnect, device number 39
[  869.947222] cp210x ttyUSB0: cp210x converter now disconnected from ttyUSB0
[  869.954438] cp210x 1-1.3:1.0: device disconnected
[  871.599115] usb 1-1.4: new full-speed USB device number 40 using ehci-platform
[  871.754679] cp210x 1-1.4:1.0: cp210x converter detected
[  871.781784] usb 1-1.4: cp210x converter now attached to ttyUSB0
[  878.729352] usb 1-1.4: USB disconnect, device number 40
[  878.736046] cp210x ttyUSB0: cp210x converter now disconnected from ttyUSB0
[  878.743303] cp210x 1-1.4:1.0: device disconnected

四个口都能识别 FT232RL 的 RS485 线, CP2104串口模块.

shaoxi2010

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注册时间： 2019-06-13

已发帖子： 389

积分： 338

Re: A33接SL2.1 USB HUB芯片, 扩展出来的四个口接U盘都可以, 但是有两个口接AIR720 4G模块出错

恭喜踩坑里了，看你的打印信息就是用的OTG那一路的USB吧，那个USB不支持ehci模式，可用端点就5个，另外一路USB是正常的，你可以飞线试试，目前只看到A64是支持两路都带ehci

fire

会员

注册时间： 2020-04-08

已发帖子： 20

积分： 20

Re: A33接SL2.1 USB HUB芯片, 扩展出来的四个口接U盘都可以, 但是有两个口接AIR720 4G模块出错

恭喜踩坑里了，看你的打印信息就是用的OTG那一路的USB吧，那个USB不支持ehci模式，可用端点就5个，另外一路USB是正常的，你可以飞线试试，目前只看到A64是支持两路都带ehci

我怎么感觉和可用端点没关系呢?楼主是四个扩展的usb两个可以用air720，两个不可以用air720,

但是四个口都可以接u盘，接ft232,cp2104串口芯片啊。