Little help needed with FT2232L USB demo board

Hi,

I have hit a bottleneck while using FIFO interface mode of FTDI FT2232L

USB demo board, which i plugged into my linux box (2.4.20-8smp). I made

sure that the ftdisio and usbserial modules are removed. To verify that the onboard EEPROM is actually configured to 245BM FIFO interface,

I used Mprog (in windows). Next, I have installed the latest libftdi and libusb packages and tried to explore the handshaking signals in FIFO mode.

So, first I have set the async bit bang mode (value 1) using ftdisetbitmode API and I could successfully read and write from FT2232L using ftdireaddata and ftdiwritedata APIs. But then in bit bang mode, I do not have access to FIFO handshaking signals (TXE and RXF) as they are masked to RD and WR signals (as per the FT2232L manual). But without setting the bitbang mode, the write operation fails and so the read operations as well. Please let me know how can i use the FIFO mode correctly and what am I missing here.

Apart from these, how can i sense the AC0:3 and BC0:3 signals on FT2232L through API. Will ftdireadpins help ? Also, how shall I interpret the data returned by ftdireadpins API.

I am kind of new to this. So, I would appreciate if you can elaborate your understanding.

Thank you very much for you help.

Regards,