USB hub as to connect some extra device
#20
(06-29-2016, 02:25 AM)gbjensen Wrote: I have a USB hub connected with external power supply. It works fine. I have a USB HD and a mouse attached.
It works very fine.

(07-05-2016, 06:37 AM)DonFL Wrote:
(07-05-2016, 06:26 AM)xalius Wrote: The upper USB port is connected to the OTG controller and can be used with the FEL (boot)loader to boot an image of your PC when no sdcard is inserted, that is handy if you do a lot of debugging and dont want to write your sdcard constantly or access the image on the fly. The lower port is connected to a normal USB host controller. See  https://linux-sunxi.org/FEL , https://linux-sunxi.org/Pine64#FEL_mode

Ahhh...interesting.

So in what might be considered "normal" or "standard" operation, i.e., booting from an sdcard image, no difference in functionality between the two ports?

I swapped over the plugs so that the USB hub is now in the lower port. I just realised the keyboard was always in the lower port and recognized.
Powered up with the keyboard in the upper port and the hub with the mouse and Aureon sound card in the lower port and all devices are online.
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 004: ID 093a:2510 Pixart Imaging, Inc. Optical Mouse
Bus 002 Device 005: ID 0ccd:0028 TerraTec Electronic GmbH Aureon 5.1 MkII
Bus 002 Device 003: ID 214b:7000  
Bus 002 Device 002: ID 214b:7000  
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 002: ID 1a2c:0c21 China Resource Semico Co., Ltd
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

I have only ever had a PC which is still running where the power from the hub caused it not to power on after a power down or reboot, necessitating a cut of the +5V wire in the PC -> Hub cable.
Beaglebones, Pandaboard, ODROID-X/-U3/-C1/-C2, Parallella-16 and Pi 2 - never an issue with USB devices and powered hubs.

The Pi 1 had a known weak USB bus.
The ODROID-U3 runs with USB devices - 2 hard drives with external power, mouse, keyboard, Gigabit Ethernet and sound card.
I am looking eventually to have the A64+ loaded with all the add-ons from the ODROID-U3 which has been totally reliable 24x7 ever since I got it.
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RE: USB hub as to connect some extra device - by sboyce - 07-05-2016, 08:09 AM

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