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programming USB micro controller without programmer

 
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asadi.siyavash



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programming USB micro controller without programmer
PostPosted: Thu May 22, 2014 12:48 pm     Reply with quote
Hi,
I am new with PIC microcontroller I used programmers like PICKIT 2 and 3 for my projects and I didn't have any problem.
but in my new project I don't have any programmer So I want to use MicroController's that have On Chip USB like PIC18F46J50, I think it is possible to program them with USB Cable without any programmer. is it true? how I can do this? CCS support this feature?

any help would be greatly appreciated
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PostPosted: Thu May 22, 2014 4:51 pm     Reply with quote
Quote:
I think it is possible to program them with USB Cable without any programmer

See this CCS example file:
c:\program files\picc\examples\ex_usb_bootloader.c

Quote:
in my new project I don't have any programmer

However, you will still need to use a programmer at least once.
See this note from the ex_usb_bootloader.c file:
Quote:

//// This program must be loaded into a target chip using a device
//// programmer. Afterwards this program may be used to load new
//// versions of the application program. There is a specific
//// protocol used by the bootloader, SIOW.EXE uses this protocol
//// if you use the 'Download Software' option.


Thread on using 18F46J50 with ex_usb_bootloader.c:
http://www.ccsinfo.com/forum/viewtopic.php?t=51811

If you are a complete newbie, it's likely this project may be too advanced
for you to do easily.
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