On Sun, Apr 29, 2012 at 9:02 PM, Uwe Bonnes <bon@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote: > most RS232/USB Adapter don't supply and most applications working with these > adapters don't need hard realtime. So even writing and reading the serial > lines can be handled with libusb, like libftdi does. > > But as soon as higher level protocols based on the serial line get involved, > a kernel driver is needed... > > So when thinking some termiox, some thoughts for the FTDI special modes, > like MPSSE or synchronous FIFO should be spent. It would come handy if I > could open /dev/ttyUSBx, set som termiox and could use the kernel driver for > sending and receiving MPSSE commands. MPSSE is e.g. used in OpenOCD and > xc3sprog to talk e.g. JTAG to external devices. On the other hand, OpenOCD and your xc3sprog will probably remain to be cross-plattform and in that case libusb/libftdi is a good option to go. There is a patch under review in OpenOCD where libusb-1.0 is used for the MPSSE engine instead of libftdi/ftd2xx and the performance seems to be better. -- Xiaofan -- 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
