On Tue, May 29, 2012 at 10:24 PM, MC Potgieter <bluscape@xxxxxxxxx> wrote: > I'm running linux kernel 2.6.38 on an embedded platform (Mini2440). On > the platform I have a Silabs CP2102 USB to serial bridge IC and a USB > host interface. I enumerate the USB host interface as a serial gadget. > > 1.) I have a problem reading data from the CP2102 UART on the platform > but I can always write to it. The read will work for a few seconds and > then stop working. > > 2.) On the serial gadget I can always read but write will work for a > short while and the stop working. > > I connect my platform to a test PC via a serial cable, coming from the > CP2102 on the platform, and a USB cable, coming from the host > interface on the platform. > > The serial gadget enumerates on the test PC as a com port and I can > communicate over it for a while. But if the interface is idle for a > while I can only write to it with no response from the platform. > > For the CP2102 I can always receive data on the test PC but writing to > the platform has no effect. > > What could this be and how can I resolve it. So it seems like the one direction on both interfaces stops working after being idle for a while. -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
