Post by thread:[PIC] 18F452 PLL

Jinx wrote: >>What am I missing here? >> >> > >Changed the crystal ? > O-Scope shows 10 MHz. (It's an oscillator, not a crystal) No, I have not changed it. > >Checked the board ? > >Pins reaching board ? (assumed a socket) > > Ahhh, the PIC is running, just not at 40 MHz, it running at 10 MHz. -- * | __O Thomas C. Sefranek spam_OUTWA1RHPTakeThisOuTARRL.net |_-\<,_ Amateur Radio Operator: WA1RHP (*)/ (*) Bicycle mobile on 145.41, 448.625 MHz hamradio.cmcorp.com/inventory/Inventory.html http://www.harvardrepeater.org

PLL doesn't work with an external oscillator. It has to be a crystal. On 9/26/06, Tom Sefranek <.....tcsKILLspam@spam@cmcorp.com> wrote: {Quote hidden}> > > Jinx wrote: > > >>What am I missing here? > >> > >> > > > >Changed the crystal ? > > > O-Scope shows 10 MHz. > (It's an oscillator, not a crystal) > No, I have not changed it. > > > > >Checked the board ? > > > >Pins reaching board ? (assumed a socket) > > > > > Ahhh, the PIC is running, just not at 40 MHz, it running at 10 MHz. > > -- > * > | __O Thomas C. Sefranek WA1RHPKILLspamARRL.net > |_-\<,_ Amateur Radio Operator: WA1RHP > (*)/ (*) Bicycle mobile on 145.41, 448.625 MHz > > hamradio.cmcorp.com/inventory/Inventory.html > http://www.harvardrepeater.org > > -

Let me show you how many projects I have done with the PIC18F452 that DO use an oscillator and PLL! It would be boring after a while... * | __O Thomas C. Sefranek .....WA1RHPKILLspam.....ARRL.NET |_-\<,_ Amateur Radio Operator: WA1RHP (*)/ (*) Bicycle mobile on 145.41MHz PL74.4 ARRL Instructor, Technical Specialist, VE Contact. hamradio.cmcorp.com/inventory/Inventory.html http://www.harvardrepeater.org {Original Message removed}

OK. It just doesn't work for me. I must be doing wrong whatever the OP is doing wrong. Tired multiple times and never was able to make it work. On 9/26/06, Thomas C. Sefranek <EraseMEtcsspam_OUTTakeThisOuTcmcorp.com> wrote: {Quote hidden}> Let me show you how many projects I have done with the PIC18F452 that DO use > an oscillator and PLL! It would be boring after a while... > > * > | __O Thomas C. Sefranek WA1RHPspam_OUTARRL.NET > |_-\<,_ Amateur Radio Operator: WA1RHP > (*)/ (*) Bicycle mobile on 145.41MHz PL74.4 > > ARRL Instructor, Technical Specialist, VE Contact. > hamradio.cmcorp.com/inventory/Inventory.html > http://www.harvardrepeater.org > > {Original Message removed}

Oops, sorry Thomas, didn't realize you are the OP. Anyway, as I said. I haven't been able to make it work. What's different between this project, and the others where it worked for you. Were they at 10 MHz? I only ever tried it at 10 MHz, the highest possible speed for this application.

> I must be doing wrong whatever the OP is doing wrong. Tired multiple > times and never was able to make it work. get a good night worth of sleep? Wouter van Ooijen -- ------------------------------------------- Van Ooijen Technische Informatica: http://www.voti.nl consultancy, development, PICmicro products docent Hogeschool van Utrecht: http://www.voti.nl/hvu

On 9/26/06, Wouter van Ooijen <@spam@wouterKILLspamvoti.nl> wrote: > > I must be doing wrong whatever the OP is doing wrong. Tired multiple > > times and never was able to make it work. > > get a good night worth of sleep? > > Wouter van Ooijen > I guess I need multiple good nights of sleep...

> I guess I need multiple good nights of sleep... This was of course an obvious target for a joke, but calling it a day and going to sleep is one of my most effective debugging techniques... Actually I see now my program does not have the desired effect, so I will apply that technique :) Wouter van Ooijen -- ------------------------------------------- Van Ooijen Technische Informatica: http://www.voti.nl consultancy, development, PICmicro products docent Hogeschool van Utrecht: http://www.voti.nl/hvu

Yes, all are at 10MHz. * | __O Thomas C. Sefranek KILLspamWA1RHPKILLspamARRL.NET |_-\<,_ Amateur Radio Operator: WA1RHP (*)/ (*) Bicycle mobile on 145.41MHz PL74.4 ARRL Instructor, Technical Specialist, VE Contact. hamradio.cmcorp.com/inventory/Inventory.html http://www.harvardrepeater.org {Original Message removed}