libftdi Archives

Subject: Re: potential libftdi data loss issue

From: Uwe Bonnes <bon@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
To: libftdi@xxxxxxxxxxxxxxxxxxxxxxx
Date: Sat, 14 Jan 2012 13:36:08 +0100
>>>>> "Rolf" == Rolf Fiedler <derRolf@xxxxxxxxxxxxxx> writes:

    Rolf> Hello, my name is Rolf and I am new to this list. I think I may
    Rolf> have found and issue with libftdi (I am using the latest git at
    Rolf> time of writing).
 
    Rolf>  We have some hardware that has a FPGA connected to an FT245BL. We
    Rolf> have been using that on Windows with D2XX for some time
    Rolf> (years). The data rate is quite high, to operate the device we
    Rolf> need to transfer around 500 KB/s (that means KBytes).
 
For high data rates, think about a streaming solution like in libftdi-1.0
ftdi_stream.c for the sychronous fifo modus. We quite reliable achiev around
16 MB/s rate on modern usb chipsets.

-- 
Uwe Bonnes                bon@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

Institut fuer Kernphysik  Schlossgartenstrasse 9  64289 Darmstadt
--------- Tel. 06151 162516 -------- Fax. 06151 164321 ----------

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