Bootloader For 18F4520

[ScaleRobotics]

Hey David,

Well I was thinking of just trying the 10mhz part first, and trying to make a 10mhz bootloader hex. Let me modify it for you, and send it your way. That will be the first step. If we can get that going, we can try to do something similar to what was done on the 18F4550, only, yes, we would have to modify the config settings to match the 18f4520.

Walter

[ScaleRobotics]

It looks to be pretty easy to modify the baud rate of the mcLoader hex files, at least with the PICkit2. I changed the CONFIG1H setting for HS 4x PLL, and also modified the 7D06 address with the SPBRG (BRGH=1) setting for 19,200 baud rate for my 8mhz x 4 crystal. I left address 7E70 at 0F, and it works with the loader program, while running at 32mhz. Should be able to do the same with a 10mhz crystal at 4x PLL.

David, I sent you a 40 mhz version to try.

Walter

[Luckyborg]

Thanks for the solution it seems to be working great.

I know there have been a few announcements recently about copyright protections, does anyone know if it is legal to post the solution for others to use? Walter and I both seem that we should be able to, but I want to make sure I'm following the rules.

David

[ScaleRobotics]

Walter and I both seem that we should be able to, but I want to make sure I'm following the rules.

I think that Mechanique SHOULD let us, since it is just the hex files for the mcLoader. And since their update does not seem to update the hex files for most people, it seems like they should be made available. No one can do a thing with them without the mcloader executable, so as long as that was not posted, it seems like it would be good customer service to make the hex files available.

However, since I do not see any postings of any of their mcloader hex files, I am assuming this is a no-no.

Walter

[mackrackit]

Send an email to Jeff and Charles...??

[ScaleRobotics]

Send an email to Jeff and Charles...??

I thought Charles was just on the MeLabs side of things and that Mechanique was a different company all together? Pardon my ignorance, but who is Jeff? (No offence Jeff).

Walter

[mackrackit]

OOPPS...

Wrong company.

Jeff is with MeLabs also.