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Hi, I am developing an ARM9 based device and it uses embedded linux. I designed it based on a reference architecture and the architecture is ok. The device has 2 ...
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- 10-19-2011 #1
- Join Date
- Aug 2011
Can not mount 2 usbs same time in embedded linux
I am developing an ARM9 based device and it uses embedded linux. I designed it based on a reference architecture and the architecture is ok. The device has 2 usb high speed host ports (say port1 and port2).
It seems that only one port can be used at a given instance.With a usb flash drive attached to port1 it works perfectly and ehenever I mount other flash in to port2 the port1 stops working(automatically unmount) and port2 flash starts working.
When I mount a flash in to port2 only, then it works perfectly.But if I add another in to port1 it is not mounted.
Is this a issue with kernel or drivers or anything else. Can someone help me
- 10-23-2011 #2
- Join Date
- Apr 2009
- I can be found either 40 miles west of Chicago, or in a galaxy far, far away.
It sounds like there may be a hardware problem. I use an ARM9 board running Debian for embedded development that also has dual USB 2.x ports, and it works like a charm.Sometimes, real fast is almost as good as real time.
Just remember, Semper Gumbi - always be flexible!