On Mon, Jan 10, 2011 at 05:35:23PM -0800, Donna Rigas wrote: > We're using an ARM7TDMI processor (LPC2368) running custom firmware > which includes the open-source LPCUSB driver code modified for our > usages (and subsequently enumerates using the cdc_acm driver as > /dev/ttyACM0). The USB pins from the ARM processor are hardwired to > our x86 host. As per the USB acm spec, it knows nothing about a uart at all, so there's no way to control it that way. Don't think of USB like a serial port in the first place, it is nothing like that. You should be able to easily keep the "pipe full" by just submitting lots of data to the device, right? Have you used a usb analizer, or usbmon, to see where, if any, places you have delays in the bus transmissions? thanks, greg k-h -- 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
