I've just tried out the msp430-dco --measure command with my parallel port JTAG, and it's reported back an fmin of 0Hz and an fmax of 0Hz.. This seems quite strange, as I've had it successfully working at a 4.9MHz DCO frequency. I'm open to ideas on what the issue could be. Does the msp430-dco program expect anything in particular from the JTAG interface?
Our board only has nRST, TCK, TMS, TDI and TDO pinned out. Bevan > Date: Mon, 20 Aug 2007 11:17:20 +0200 > From: [email protected] > To: [email protected] > Subject: Re: [Mspgcc-users] fll_adjust > > Bevan Weiss schrieb: > > fll_adjust(FLL_MULTIPLIER(4000000, 4096)); > > > > Now checking through this with gdb it appears as though fll_adjust is > > getting hung up somewhere with a multiplier of 976. It never returns, > > but it's so close to the requested frequency. > > > > Is this an issue with fll_adjust? > > it works fine for me at least for 1.5 and 3.0 MHz > > > If so, is there a workaround for it, > > or what other course of action should I take? > > are you sure your device works properly with 4MHz? VCC high enough? > 4... 5 MHz is the maximum DCO frequency for F1xx devices with the > internal resistor (at room temperature and 3 volts i have always seen a > minimum of >4.5MHz) > but maybe are the DCO ranges not overlapping? > > if you have a parallel port JTAG you can check the DCO ranges with > msp430-dco --measure > > chris > > ------------------------------------------------------------------------- > This SF.net email is sponsored by: Splunk Inc. > Still grepping through log files to find problems? Stop. > Now Search log events and configuration files using AJAX and a browser. > Download your FREE copy of Splunk now >> http://get.splunk.com/ > _______________________________________________ > Mspgcc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/mspgcc-users _________________________________________________________________ Discover the new Windows Vista http://search.msn.com/results.aspx?q=windows+vista&mkt=en-US&form=QBRE
