>From the schematics that FTDI provides it looks like there are no pullups or pulldowns on those lines, maybe the FPGA itself has some internal pullups/downs. However, as you noticed, everything seems to work with the libftd2xx. The only reason I am working on this is that I noticed that the DEV_RST is set high, when I do nothing to the B port. So all I am trying to accomplish is setting this one line to 0. Any functionality that can do this would work for me, I just thought BITBANG would be the easiest. Jo
On 7/26/2011 4:28 AM, Uwe Bonnes wrote: >>>>>> "Joachim" == Joachim Schambach <[email protected]> writes: > Joachim> Hi, I have a question about the usage of the ftdi_set_bitmode > Joachim> function. I am using a development board from FTDI called > Joachim> MorphIC-II to evaluate the usage of the FT2232HQ chip. This > ... > Joachim> I am trying to use BITBANG mode to port B to set the DEV_RST > Joachim> line to 0, while leaving the other pins alone (by setting them > Joachim> as inputs). I have been able to do this with the libftd2xx > > What are you trying to achieve? What other function should the FT2232H do, > either seqential or simultanious? Why can't you use MPSSE to set the PINs? > > Otherwise, are there appropriate pull-up/downs to keep the input lines from > floating? But as it works with ftd2xx, there should be. > > In the next weeks I don't have time to investigate further... > > Bye > -- Dr Joachim Schambach tel: x1 512 471 1303 The University of Texas at Austin fax: x1 814 295 5111 Department of Physics email: [email protected] 1 University Station C1600 Austin, Texas 78712-0264, USA -- libftdi - see http://www.intra2net.com/en/developer/libftdi for details. To unsubscribe send a mail to [email protected]
