From: Stanley L. <sta...@gm...> - 2007-09-30 01:18:25
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Hi Olgierd, I'm not connecting the usb port and the dc source at the same time. I tried each power source separately, and took note of that in the problem report. Stanley On 9/29/07, Olgierd Eysymontt <ol...@te...> wrote: > > May be you are connecting the usb port and the dc source at the same time, > in that case yo can have big currents between the computer and board. I've > had similar problems with a usb oscilloscope because it's very difficult to > isolate the usb bus so it's ussually referenced to ground. > > I hoe it helps, > > Olgierd Eysymontt > > 2007/9/29, Stanley Lee <sta...@gm...>: > > > > Once again, thanks to Jan and Raphael for their help for getting me > > started with a template for the C codes on SDCC fusebit syntax. My newest > > version of the LED blinking code is posted on > > http://www.dutchforce.com/~eforum/index.php?showtopic=14788<http://www.dutchforce.com/%7Eeforum/index.php?showtopic=14788> > > . > > > > However, I am having a problem of my PIC18F2620 not starting the control > > execution properly when I use my DC adapter as the power source. Eventually, > > I will be using the microcontroller on a portable battery, but for now, I'm > > using a DC adapter for development and testing purposes. I am suspecting > > that either I'm not setting the fusebits properly or I'm experiencing a > > problem with my power supply, which might require me to set up brown out > > reset and power up timer. How can I tell whether I have a fusebit > > configuration problem or whether I have a problem with my power supply? > > > > Cheers, > > > > Stanley > > > > > ------------------------------------------------------------------------- > This SF.net email is sponsored by: Microsoft > Defy all challenges. Microsoft(R) Visual Studio 2005. > http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ > _______________________________________________ > Sdcc-user mailing list > Sdc...@li... > https://lists.sourceforge.net/lists/listinfo/sdcc-user > > |