18F bootloader

Trampas · Joined: 04 Sep 2004 Posts: 89 Location: NC

First forgive me if this is a previous thread somewhere....

I am getting ready to write or find a boot loader for the 18F8680 processor. I am thinking I will have to create it as that it will be used for field updates. Thus I figure it will have to exist in own section of flash which is not erased during firmware update. Therefore I figure I can not use the Read/Write program memory intrensic functions as I have no idea where CCS puts these functions in Flash.

Does anyone have sample code which does field updates?

Thanks
Trampas

Mark · Joined: 07 Sep 2003 Posts: 2838 Location: Atlanta, GA

Do a small test and I suspect that CCS implements these inline. I know the eeprom writes were handled in this fashion.

Haplo · Joined: 06 Sep 2003 Posts: 659 Location: Sydney, Australia

Correct. In CCS, all the read/write functions to EEPROM/Flash are implemented inline.