On 10/21/2012 05:52 PM, v01d wrote: > Hi, sorry for the continuous strain of emails but I've tested writing > and reading something in location 0x3FF0 and it works properly. It seems > that I do have 16KB of memory. Or do I? > I don't know much about the FX2, but it is possible that the address wraps around. I would try writing over the entire memory range, and only then, read back. (either random data, or 16-bit self-address should do the trick)
Alex > On Sun, Oct 21, 2012 at 11:52 AM, v01d <[email protected] > <mailto:[email protected]>> wrote: > > I meant, enumerates as high-speed, sorry. > > > On Sun, Oct 21, 2012 at 11:52 AM, v01d <[email protected] > <mailto:[email protected]>> wrote: > > Oh, damn. > But, if it enumerates as full-speed do you think it is a > counterfeit chip also? > I will try to run benchmarks, and see speeds. > Is there any way to discern the good and bad chips before buying? > > Thanks > > > On Sun, Oct 21, 2012 at 5:33 AM, Bert Vermeulen <[email protected] > <mailto:[email protected]>> wrote: > > On 20/10/12 23:15, v01d wrote: > > Hi, > > I've been working on the Cypress FX2 chip (with the LCsoft > board from > > ebay) and I had a very hard time making it work (mainly, > renumerate) > > using any code that depended on fx2lib. > > I've finally found some code based on gnuradio which > didn't use fx2lib. > > They developed their own base code and, provided you take > some care when > > compiling their code, it works perfectly. > > I haven't been able to understand why fx2lib code does not > work in the > > same board. > > You should be aware that there's been a rash of counterfeits > on the > LCsoft boards on ebay -- got some bad ones myself. The chips are > labelled correctly as the Cypress FX2LP, but are actually > the older > Cypress FX2. Among other things, it's a Full Speed-only > (12Mb/s) USB > chip. It also has 8K RAM instead of the FX2LP's 16K. > However, fx2lafw > doesn't run on it. > > It's perfectly possible to run code on it, if you don't > require HS > (which fx2lafw does) and don't try to use memory over 8K. > Quite likely > this is the case for the USRP firmware. > > So I think you've got a counterfeit. > > > I have submitted this issue to the fx2lafw github repo > since it is > > simple to reproduce in my case (I use compiled and > precompiled firmware > > and neither work) but I realize this may be a problem in > fx2lib itself. > > The thing is that the fx2lib code does not seem to be very > active and > > fx2lafw does, so maybe the devs here have more idea. > > Also, I'm reporting this here in the interest of fixing > fx2lib since it > > looks like a fine library to base code on (I don't know if > the gnuradio > > has a very complete implementation of all FX2 functions). > > fx2lafw is a sub-project of sigrok, and this is the correct > place to > report problems for it. That github repo is just a random fork. > > fx2lib has some problems compiling with more recent versions > of SDCC, so > we fixed those > > (http://sigrok.org/gitweb/?p=sigrok-firmware-fx2lafw.git;a=history;f=fx2lib;hb=HEAD) > and ship fx2lafw with that (stripped-down) version of > fx2lib. However, > we're not the official maintainers of fx2lib, the project > does indeed > appear to be abandoned. > > > -- > Bert Vermeulen > [email protected] <mailto:[email protected]> > > > ------------------------------------------------------------------------------ > Everyone hates slow websites. So do we. > Make your web apps faster with AppDynamics > Download AppDynamics Lite for free today: > http://p.sf.net/sfu/appdyn_sfd2d_oct > _______________________________________________ > sigrok-devel mailing list > [email protected] > <mailto:[email protected]> > https://lists.sourceforge.net/lists/listinfo/sigrok-devel > > > > > > > ------------------------------------------------------------------------------ > Everyone hates slow websites. So do we. > Make your web apps faster with AppDynamics > Download AppDynamics Lite for free today: > http://p.sf.net/sfu/appdyn_sfd2d_oct > > > > _______________________________________________ > sigrok-devel mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/sigrok-devel > ------------------------------------------------------------------------------ Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_sfd2d_oct _______________________________________________ sigrok-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/sigrok-devel
