[prev in list] [next in list] [prev in thread] [next in thread] 

List:       libftdi
Subject:    Re: FT2232H Synchroneous FIFO mode: Some findings
From:       Jie Zhang <jzhang918 () gmail ! com>
Date:       2010-02-15 11:17:57
Message-ID: 6f48278f1002150317r3f76a7f0x9c7a846801dc14cb () mail ! gmail ! com
[Download RAW message or body]

On Wed, Feb 3, 2010 at 6:30 AM, Uwe Bonnes
<bon@elektron.ikp.physik.tu-darmstadt.de> wrote:
> Okay,
>
> now running libftdi-1.0 linked against libusb-1.0.
>
> After fighting some other problems, the same thing happens. As soon as in
> following expression
>
> #define CHUNKEXP 14
>  if (ftdi_read_data_set_chunksize(&ftdic, 1<<(CHUNKEXP)))
>
> CHUNKEXP gets bigger then 14, blocks of data get skipped. Maybe something in
> libusb or even the kernel...
>
As I found, the read chunksize cannot be set larger than 16K. See

http://developer.intra2net.com/mailarchive/html/libftdi/2010/msg00075.html


Jie

--
libftdi - see http://www.intra2net.com/en/developer/libftdi for details.
To unsubscribe send a mail to libftdi+unsubscribe@developer.intra2net.com   


[prev in list] [next in list] [prev in thread] [next in thread]