Can't set 38400 baud @ 48Mhz

[Darrel Taylor]

Beta 2.46

[skimask]

Beta 2.46

You laugh...but for some reason I think I might have a one-off version of 2.46. I got it a couple of months after it came out. Then noticed that patch awhile after that, still haven't been able to get that applied successfully. Some of the PBP INC files are labelled 2.45, some much earlier than that (but then again, no need to waste time by renaming stuff if you didn't do anything to it right?). I emailed Jeff about it awhile back, he sent me an email back, I never did get around to sending a copy of my registration, etc. to get a new CD and he mentioned 2.47 was on it's way out, so I held off...
I'm wondering if this 2.46 isn't my problem with the SPI on the '4620, worked fine on the '452, never could get it to work on the '4620. Maybe 2.47 will fix that too, maybe Microchip will someday publish another errata...

At any rate... I still wonder if the original poster could easily get around this whole problem by setting the register values manually instead of relying on the compiler to handle it automatically...

[Darrel Taylor]

Woooaa, there's an Idea.

Jerry,

Have you run the Patch for 2.46 yet?
http://www.melabs.com/support/patches.htm

I did a long time ago, forgot all about it.

Good thought skimask.

P.S. The 2.47 upgrade will fix that if you didn't.

P.P.S. The patch is a PITA. because if you have modified the .INC files (like we all do for the configs), it won't run, until you undo the changes. If you haven't done it yet, just wait for 2.47. It'll save you a few hours of horror.

[mister_e]

P.P.S. The patch is a PITA.

mmm PITA

[b1arrk5]

Hi guys,

After speaking with the nice folks at MeLabs I have the following explanation, the warning is due to the fact that PicBasic defaults to 2400 baud, and I had the oscillator set to 48Mhz, which it can't do with the high speed baud generator register set. I was close, I could get it to compile without the warning, but the baudrate wasn't right. The following code works perfectly now;

BAUDCON.3 = 1 'SETUP FOR HIGH SPEED.
DEFINE HSER_RCSTA 90H
DEFINE HSER_TXSTA 24H 'HIGH SPEED MODE BAUD RATE GENERATOR
DEFINE HSER_BAUD 38400
DEFINE HSER_SPBRG 38H '38400 BAUD *** THIS WORKS! ***
DEFINE HSER_SPBRGH 01H

Thanks,

Jerry.

Thanks for all your help!

[Darrel Taylor]

Isn't that what Steve and I said in Post #24 and 23?

[b1arrk5]

I'm sorry, I should have made it more clear, that was why I posted the 'solution,' so that you and Steve would know that you were indeed right! More importantly, you guys were available and willing to help out on the weekend, which is when I have uninterrupted time to work, as opposed to during the week when the phone rings incessantly. Have a great weekend!

Jerry.