Troubleshooting is on page 39.
Make sure your parts are fully inserted into the breadboard and double-check your wiring.
Also check that you have parts inserted in the correct direction.
It's also VERY VERY VERY important that you add the power decoupling capacitors as shown on page 38.
The PLL (Phase-Locked Loop) of the Propeller-1 is easily damaged by power spikes.
Without the PLL, you will be stuck at 5 MHz.
Also be aware that the PEK manual doesn't teach great programming practices.
Useful features like CONstants are used until the end and not explained.
Have a copy of the Propeller Manual handy for reference. https://www.parallax.com/package/propeller-manual/
@rffish,
Probably a dumb question but have you tried to carefully re-do your circuit with a fresh (not used and decent quality) breadboard ?
That might help.
I've had all sorts of connectivity problems with breadboards (yes, the cheap ones) and quit using them entirely. (It's not against breadboards, it's just I couldn't trust the ones I used.)
The only time I used a TH P1 was for a Nuts & Volts design (way back in 2009) called the Propeller Platform (which was later picked up and improved by Gadget Gangster). I did this before the QuickStart was released as a platform for building other projects on -- my answer to the Schmarschmino with a P1. I don't have Gerbers (ExpressPCB didn't output for other vendors), but the files are attached and may be useful. The photo shows the working board (cheap version w/o solder mask and silkscreen).
@Maciek, great suggestion! I moved everything to a BB830 breadboard I bought from Ben Eater, and Propeller Tool found my P8X32A. Thanks to you and everyone else for the help.
Comments
rffish,
Troubleshooting is on page 39.
Make sure your parts are fully inserted into the breadboard and double-check your wiring.
Also check that you have parts inserted in the correct direction.
It's also VERY VERY VERY important that you add the power decoupling capacitors as shown on page 38.
The PLL (Phase-Locked Loop) of the Propeller-1 is easily damaged by power spikes.
Without the PLL, you will be stuck at 5 MHz.
Also be aware that the PEK manual doesn't teach great programming practices.
Useful features like CONstants are used until the end and not explained.
Have a copy of the Propeller Manual handy for reference.
https://www.parallax.com/package/propeller-manual/
Good Spin Tutorial (bottom of page)
https://forums.parallax.com/discussion/134926/the-disappearing-propeller-tutorial
Exercises 11 and 12 use TV_Terminal, which uses the TV circuits that were built into the Propeller Demo Board.
Thank you!
Still Propeller Toll doesn't see my P8X32A.
Here is my breadboard and a a closeup with no XTAL.
(https://forums.parallax.com/uploads/editor/2e/x5pxtclugkdb.jpg "")
(https://forums.parallax.com/uploads/editor/yb/o5b719z4n6j6.jpg "")
Vdd is 3.28 v. Is that enough?
Do you have TX and RX swapped? It's easy to do. Ask me how I know.
Tried P31/P30 both ways, same thing: No Propeller found.
Maybe it just doesn't like breadboards. Does anyone have Gerbers for a through-hole PCB?
Yep, Rx/Tx and 3 phase motors.. Should be right at least half the time, but.... no...
@rffish,
Probably a dumb question but have you tried to carefully re-do your circuit with a fresh (not used and decent quality) breadboard ?
That might help.
I've had all sorts of connectivity problems with breadboards (yes, the cheap ones) and quit using them entirely. (It's not against breadboards, it's just I couldn't trust the ones I used.)
The only time I used a TH P1 was for a Nuts & Volts design (way back in 2009) called the Propeller Platform (which was later picked up and improved by Gadget Gangster). I did this before the QuickStart was released as a platform for building other projects on -- my answer to the Schmarschmino with a P1. I don't have Gerbers (ExpressPCB didn't output for other vendors), but the files are attached and may be useful. The photo shows the working board (cheap version w/o solder mask and silkscreen).
You don't really need the eprom to test it or load the ram, you might have a bad propeller chip, prop plug or both.
@Maciek, great suggestion! I moved everything to a BB830 breadboard I bought from Ben Eater, and Propeller Tool found my P8X32A. Thanks to you and everyone else for the help.
rffish