Frans Meulenbroeks wrote: > Hi, > Hi Frans,
> I need to program a MAXII CPLD under linux. This CPLD is connected > directly to my uP through gpio pins. The uP runs Linux. > While googling for a solution I bumped upon urljtag, which seemed a nice > starting point. > As I see it there is not yet generic gpio support, but I feel it should > not be overly difficult to add it (using bit banging). It did quite the same to program a Lattice FPGA, using bit banging from a MX.31 processors. Probably it is very close to your requirement. > > My questions: is urjtag a good starting point. If so, should I consider > my direct connection to be a cable? And if so, what would be a good > starting point? > (actually to me ts7800 looks like an interesting starting point, > although it pokes directly in /dev/mem, whereas I probably would prefer > to use the standard gpio mechanism (see > http://www.mjmwired.net/kernel/Documentation/gpio.txt) ) Agree, I did exactly in this way using the sysfs interface to drive the GPIOs. If you want to take a look, you can find my patch under: http://www.denx.de/wiki/pub/DULG/AN2010_04_QongFpgaUpdateUsingUrJtag/0001-Support-updating-FPGA-on-QONG-module.patch Regards, Stefano -- ===================================================================== DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: +49-8142-66989-0 Fax: +49-8142-66989-80 Email: [email protected] ===================================================================== ------------------------------------------------------------------------------ This SF.net email is sponsored by Sprint What will you do first with EVO, the first 4G phone? Visit sprint.com/first -- http://p.sf.net/sfu/sprint-com-first _______________________________________________ UrJTAG-development mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/urjtag-development
