On Sun, 17 Dec 2006, Anders Wallin wrote: > Date: Sun, 17 Dec 2006 11:48:16 +0200 > From: Anders Wallin <[EMAIL PROTECTED]> > Reply-To: "Enhanced Machine Controller (EMC)" > <[email protected]> > To: "Enhanced Machine Controller (EMC)" <[email protected]> > Subject: Re: [Emc-users] Mesa m5i20 PWM frequency ? > >>>> OK so for the 5I20 I can change the PWM so it will go up to ~66 KHz >>>> instead of >>>> ~33 KHz. >>> Peter, would changing to a max 66 kHz PWM frequency on the 5I20 simply >>> require a new fpga configuration to be compiled and downloaded to the >>> 5I20, or does it require a hardware change ? >> >> Just a new configuration. >> >> The base frequency of the PWM is currently 33 MHz and the PWM resolution is >> 10 >> bits so the current max PWM rate is 33 MHz/1024. I can double the 33 MHz to >> 66 >> MHz inside the FPGA to get 66 MHz/1024 PWM rate easily (or use the 50 MHz >> clock and double it for 100 MHz/1024 max PWM rate. > > that sounds great! > > it looks like we will have several different fpga configs(m5i20-step/dir > m5i20-pwm/dir) for the m5i20 in the future, maybe separate directories > in cvs should be setup ? > > I'd be interested in testing a 66MHz/1024 hostmot-4 configuration, but I > don't know how to change the vhdl or compile the fpga code. > Basically I just do 'loadrt hal_m5i20 loadFpga=1', so I would need help > to get to this point, after that I can do the testing with some HAL > coding and a scope. > > AW
I can send you a new config file and source next week some time. > > ------------------------------------------------------------------------- > Take Surveys. Earn Cash. Influence the Future of IT > Join SourceForge.net's Techsay panel and you'll get the chance to share your > opinions on IT & business topics through brief surveys - and earn cash > http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > Peter Wallace Mesa Electronics (\__/) (='.'=) This is Bunny. Copy and paste bunny into your (")_(") signature to help him gain world domination. ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
