From: karthik b. g. <sdc...@ya...> - 2003-07-02 17:58:46
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Hi friends, Do throw some of your presitigous ideas for an analysis made by me. I am into something like finding all the possible ways to to bring a perfectly operating controller to halt(standstill) using just the coding . I want just the ways in which a controller can be affected or its operation distorted using software(coding) alone. The software could be either in ASSEMBLY or SDCC or KEIL. Plz brief the tricks and tell the code. Thanx in advance, Xpecting ur fullest support, karthik bala guru li...@ya... __________________________________ Do you Yahoo!? SBC Yahoo! DSL - Now only $29.95 per month! http://sbc.yahoo.com |
From: Rod B. <ro...@bo...> - 2003-07-02 18:24:42
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while(1); On Wed, 2 Jul 2003 10:58:45 -0700 (PDT) karthik bala guru <sdc...@ya...> wrote: > Hi friends, > > Do throw some of your presitigous ideas for > an analysis made by me. > > I am into something like finding all the possible > ways to to bring a perfectly operating controller to > halt(standstill) using just the coding . > > I want just the ways in which a controller can > be affected or its operation distorted using > software(coding) alone. > > The software could be either in ASSEMBLY or SDCC or > KEIL. Plz brief the tricks and tell the code. > > Thanx in advance, > Xpecting ur fullest support, > karthik bala guru > li...@ya... > > > __________________________________ > Do you Yahoo!? > SBC Yahoo! DSL - Now only $29.95 per month! > http://sbc.yahoo.com > > > ------------------------------------------------------- > This SF.Net email sponsored by: Free pre-built ASP.NET sites including > Data Reports, E-commerce, Portals, and Forums are available now. > Download today and enter to win an XBOX or Visual Studio .NET. > http://aspnet.click-url.com/go/psa00100006ave/direct;at.asp_061203_01/01 > _______________________________________________ > Sdcc-user mailing list > Sdc...@li... > https://lists.sourceforge.net/lists/listinfo/sdcc-user -- |
From: Paul S. <pa...@pj...> - 2003-07-02 19:27:38
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> > >I am into something like finding all the possible >ways to to bring a perfectly operating controller to >halt(standstill) using just the coding . > >I want just the ways in which a controller can >be affected or its operation distorted using >software(coding) alone. > On the 8051 (mcs51).... shut_down: clr ea ;no interrupts to wake up mov pcon, #2 ;enter powerdown and stop the clock osciallator nop Typically you would want the CPU to wake up somehow. Most chips allow wakeup from powerdown from external signals. There is also an idle mode where the CPU stops executing code but the clock osciallator and peripherals keep running... so for example you can use on of the built-in timers to wake up later on, or perhaps wake up with data is received on the serial port. Some chips have a watchdog timer, which will reboot the CPU after some time if you don't disable it. Refer to the chip's datasheet for specific info. Paul |