Hi Mikael, To my knowledge, FT2232H supports SINGLE CHANNEL synchronous FIFO mode. I suggest double check the data sheet to make sure your desired configuration is possible in hardware.
Will On Wed, Oct 13, 2010 at 7:13 PM, Mikael Krus <m...@omnisys.se> wrote: > Hi, > > I am trying to configure both interfaces in FT2232H, and use them and at > the same time. This isn't working as expected though. > > This is how I like it: > Interface A should be in synchrounous FIFO mode continously reading the > buffer waiting for data. > Interface B should be in MPSSE mode (simple general purpose IO). Toggling a > pin writes data to the FIFO (for interface A to read). > > This is a snippet from my code when sertting up the interfaces (I can > attach my full code if someone like to see it): > > // Select and open interface A, reset and purge, enable syncFIFO > ret = ftdi_set_interface(&ftdicA, INTERFACE_A); > ret |= ftdi_usb_open_dev(&ftdicA, devlist->dev); > ret |= ftdi_usb_reset(&ftdicA); > ret |= ftdi_usb_purge_buffers(&ftdicA); > ret |= ftdi_set_bitmode(&ftdicA, 0, BITMODE_RESET); > ret |= ftdi_set_bitmode(&ftdicA, 0, BITMODE_SYNCFF); > > ret = ftdi_set_interface(&ftdicB, INTERFACE_B); > ret |= ftdi_usb_open_dev(&ftdicB, devlist->dev); > ret |= ftdi_usb_reset(&ftdicB); > ret |= ftdi_usb_purge_buffers(&ftdicB); > ret |= ftdi_set_bitmode(&ftdicB, 0, BITMODE_RESET); > ret |= ftdi_set_bitmode(&ftdicB, 0, BITMODE_MPSSE); > > After this I try to send a "bogus" command to the MPSSE expecting it to > send back a two byte "error code" message, but this never happens. > > If I comment out the setup of interface A, however it works as expected > (regarding the "error message" sent back). > What did I do wrong?? > > Besides this, what effect will my ftdi_usb_reset() call have on interface A > when calling it for interface B? Does it also get reset? > > Best regards > Mikael > > -- > libftdi - see http://www.intra2net.com/en/developer/libftdi for details. > To unsubscribe send a mail to > libftdi+unsubscr...@developer.intra2net.com<libftdi%2bunsubscr...@developer.intra2net.com> > -- libftdi - see http://www.intra2net.com/en/developer/libftdi for details. To unsubscribe send a mail to libftdi+unsubscr...@developer.intra2net.com
