>>>>> "Ales" == Ales Teska <ales.teska@xxxxxxxxx> writes:
Ales> Hi, I'm working on a project that make use of FT4232 chip. The
Ales> design says that some of the FT4242 ports will be connected to
Ales> things like GSM modem and GPS devices and some will be using MPSSE
Ales> for bit banging purposes. Whole thing is running on the Linux with
Ales> quite decent Linux kernel (2.6.34).
Ales> Now problem is that obviously it is not possible today to
Ales> configure ftdi-sio a libftdi to share same USB device. Right? I
Ales> assume that if ftdi-sio 'locks' USB device, then it is not
Ales> possible to speak with that thru libusb/libftdi.
Ales> We will probably lucky enough with our project as we have 2 FT4232
Ales> chips and we can reshuffle design to move read RS232 connections
Ales> to one chip and other use for bit banging. But is the a way or a
Ales> plan to change this? It is possible to split device use this way
Ales> on Windows and with vendor D2XX library (on Linux they have the
Ales> same issue).
If you open the USB interface with libftdi, the kernel mode driver is detached
from the interface. Reattaching is another thing, but is doable.
If you need nearly concurrent access to the UART/MPSSE, write the whole
application as a libftdi application, handling UART inside libftdi too.
Bye
--
Uwe Bonnes bon@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Institut fuer Kernphysik Schlossgartenstrasse 9 64289 Darmstadt
--------- Tel. 06151 162516 -------- Fax. 06151 164321 ----------
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