Part number to replace PIC32 chip.

kk6jr
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Part number to replace PIC32 chip.

Post by kk6jr » Tue Jan 27, 2015 2:49 pm

I can see the part number for a replacement PIC32 for the Chipkit Pi with the USB bootloader

TCHIP-USB-MX250F128B

from Preprogrammed chipKIT USB Bootloader - TCHIP-USB-MX250F128B | Microchip Technology Inc.

http://www.microchipdirect.com/ProductS ... MX250F128B

Part part numbers for chips with (presumably) no bootloading firmware loaded at all.

What I can't find is the part number and where to buy the standard Chipkit Pi PIC32 chip with the Raspberry Pi UART bootloader. Cheap replacement of this easily damaged part was touted as one of the advantages of the Chipkit Pi, but I can't find out where to buy one anywhere! Only the non-standard USB bootloader part.

guymc
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Re: Part number to replace PIC32 chip.

Post by guymc » Wed Jan 28, 2015 10:12 pm

As far as I know, a pre-programmed part with the Raspberry Pi UART bootloader is not available as a standard catalog item. However, hex files for both forms of the bootloader (USB, UART) are available here:

https://github.com/chipKIT32/PIC32-avrd ... urrent-hex

If you have access to a programmer such as chipKIT PGM or PICkit 3, you could program this hex file into a new, blank device by following the instructions here:

http://chipkit.net/wp-content/uploads/2 ... -Guide.pdf

Hope this helps...

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majenko
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Re: Part number to replace PIC32 chip.

Post by majenko » Wed Jan 28, 2015 10:41 pm

Maybe I should program a couple up and slap them on eBay - make a quick buck ;)
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majenko
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Re: Part number to replace PIC32 chip.

Post by majenko » Wed Jan 28, 2015 11:46 pm

If anyone wants to throw money at me:

http://www.ebay.co.uk/itm/191496314395

8-)
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guymc
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Re: Part number to replace PIC32 chip.

Post by guymc » Wed Jan 28, 2015 11:58 pm

Thank you very much, Majenko!

nroff-man
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Re: Part number to replace PIC32 chip.

Post by nroff-man » Fri Jan 30, 2015 8:46 am

lo

Or you can read the two posts in this very forum which
explain that you can program the PIC32 on the ChipKIT Pi.

Just plug in a blank chip, compile and setup the programming
tool, program the hex file and you are done.

Re:
viewtopic.php?f=25&t=3061
viewtopic.php?f=25&t=3076

See:
http://wiki.kewl.org/dokuwiki/boards:chipkitpi

Bye

kk6jr
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Re: Part number to replace PIC32 chip.

Post by kk6jr » Tue Feb 03, 2015 7:01 pm

nroff-man wrote: ...
Just plug in a blank chip, compile and setup the programming
tool, program the hex file and you are done.
...
It's a great pity.

The Chipkit Pi seems to be a good design. Nice piece of hardware.
But rendered nearly useless by the appalling documentation.

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majenko
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Re: Part number to replace PIC32 chip.

Post by majenko » Tue Feb 03, 2015 7:29 pm

It was designed and made by Element14, and they don't seem to have been too good at that side of things. It took us forever to just get a copy of the factory installed bootloader from them... We're trying to create our own set of documentation to complement it at the moment...
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nroff-man
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Re: Part number to replace PIC32 chip.

Post by nroff-man » Thu Feb 05, 2015 10:56 am

hi
kk6jr wrote:
nroff-man wrote: ...
Just plug in a blank chip, compile and setup the programming
tool, program the hex file and you are done.
...
It's a great pity.

The Chipkit Pi seems to be a good design. Nice piece of hardware.
But rendered nearly useless by the appalling documentation.
It's true that the ChipKIT Pi isn't well documented but I am not
really sure what they can add to the Microchip documentation for
the processor. The board doesn't really offer that much more than
the chip itself.

I only got his board to develop C code to write to the PIC32 flash.
I have achieved that goal, and to be honest, I can't think of much
else to do with it at the moment.

I just got a PCB adapter for a CS4334 DAC, if this chip is compatible
with the PIC32 maybe I will see about doing something with that.

Good luck.
Bye bye.

madias
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Re: Part number to replace PIC32 chip.

Post by madias » Thu Feb 05, 2015 11:12 pm

CS4334 is working well with the pic32mx250 (or all other I2s capable pics

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