Yes. We definitely had P0.14 pulled low while programming. We tried various combinations of things but primarily it included (1) supply power to the device, (2) pull P0.14 (pin 44) low, (3) toggle RST. We lucked out twice with this process and successfully loaded a small program which toggled some LEDs. We feel reasonably confident that we were able to get the device into 'ISP' mode, because when we'd supply the power, the program would run, then after pulling p0.14 low and toggling the RST pin, the program would stop executing. Originally, we just let the RST pin float.... then changed that after reading in the manual that we could also get the LPC in ISP mode when pulsing RST after pulling pin 44 low. ... as Leon suggests, maybe we've got a bad solder connection somewhere. We did test all pins involved individually. Thanks, Bryan --- In lpc2100@yahoogroups.com, Robert Adsett <subscriptions@a...> wrote: > One other thing I haven't seen mentioned here yet. You do have P0.14 > pulled low when you are programming? > > Robert > > " 'Freedom' has no meaning of itself. There are always restrictions, > be they legal, genetic, or physical. If you don't believe me, try to > chew a radio signal. " > > Kelvin Throop, III
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Re: trouble programming our prototype board w/ lpc210x ISP
2004-01-03 by bclapper29
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