And...

Is there a software RESET command?
And if so, does *that* work as expected?

You can monitor some other I/O pin and if that changes
execute the RESET command. Just as a test...

Jan-Erik S=F6derholm



> -----Ursprungligt meddelande-----
> Fr=E5n: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] F=F6r Ru=
ben
> J=F6nsson
> Skickat: den 8 april 2015 13:05
> Till: Microcontroller discussion list - Public.
> =C4mne: Re: [PIC] dsPIC /MCLR reset
>=20
> Does it work if you put it in reset (hold in reset and release from
> reset) from the IDE with a programmer/debugger attached?
>=20
> Other things that comes to mind:
> All VDD pins (including AVDD) connected to VDD.
> All VSS pins (including AVSS) connected to VSS.
> VCap present and of required type (ESR) and value?
> JTAG disabled (so it doesn't accidentally enter JTAG operation).
> Does oscillator stop when pulling MCLR low?
> Pullup on MCLR.
> Any power surges when going out of reset?
>=20
> /Ruben
>=20
> > > Perhaps you have a zapped MCLR pin. Have you tried with
> > > another chip?
> >
> > Yes, three straight out of the tube and a couple of older ones
> > from a different batch
> >
> > Interestingly, if /MCLR is grounded when power is applied
> > the LCD doesn't initialise. Nor does it when you release the
> > button for /MCLR to go to its usual high. Using the LATB,0
> > markers to view progress, it seems code is not being executed
> > at all. The oscillator (HS crystal) is going though. The power
> > needs to be cycled with /MCLR high to get the s/w running
> > as you'd normally expect it to.
> >
> > So the button is doing "something". I must be missing a h/w
> > directive somewhere but the path between pin and internal
> > reset signal is pretty straight-forward
> >
> > Joe
> >
>=20
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