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PICList Thread
'Upgrading the Picstart Plus--HELP!'
1997\04\11@090553 by Mark Jurras

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I tried unsuccessfully to upgrade my Picstart Plus yesterday.

Every time I start the Picstart Plus from MPLAB 3.22.00 I get a message box
that states there is a firmware upgrade. I ordered a PIC17C44-25/P and
followed the instructions in readme.pls EXACTLY. When I plug the new chip
into the Picstart Plus and apply power, sometimes the power light and Active
light come on and remain lit other times the lights come on and fade out
simultaneously. In either case MPLAB can't find the Picstart Plus. I can
plug in the old chip and it works.

When I programmed the chip the following settings were used:
file - PSF12000.HEX
Device - PIC17C44
Oscillator - EC
Watchdog Timer - x1
Processor Mode - Microprocessor

The device verifies OK! What have I done wrong? Next time I think I'll buy
the windowed version.

- -Mark

1997\04\11@114909 by myke predko

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Mark,

Most likely you tried to set the configuration fuses to what *you* thought
was correct.  The required values don't make a lot of sense.

Try it again, but this time don't touch the configuration file information -
let that get picked up out of the .HEX file.

Good Luck!

myke
{Quote hidden}

"Some people say that foreign cars handle best, while others say domestic.
For my money, nothing handles as well as a rental car." - P.J. O'Rourke

1997\04\14@123357 by myke predko

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Mark replied to the note below to me and I think wanted everybody on the
list to see it.

Mark, the only comment I can make on this is, you should see the
Configuration Fuses change from the default values after you load in the
.hex file.

If you don't see this, then you have a problem with how you're loading the
file.
Good luck!

myke
{Quote hidden}

"Some people say that foreign cars handle best, while others say domestic.
For my money, nothing handles as well as a rental car." - P.J. O'Rourke

1997\04\16@091323 by Mark Jurras

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That was the problem Myke. When I said I followed the directions exactly
Microchip assumed that I knew what I was doing. I was viewing the hex file
instead of loading it. DUH! I should have realized that since that is the
way the emulator memory is loaded. Once I realized that everything worked
fine. luckily the configuration fuses and previously programmed with 1's
were the 0's should have been so I could reuse the OTP part I previously
tried.

Thanks for the help!

- -Mark

>>>> From:    myke predko <EraseMEmykespam_OUTspamTakeThisOuTPASSPORT.CA>

Mark, the only comment I can make on this is, you should see the
Configuration Fuses change from the default values after you load in the
.hex file.

If you don't see this, then you have a problem with how you're loading the
file.
Good luck!

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