Access to FLASH ROM in RC?

[Alan Anderson]

I know how to put constants in ROM. Is there any way I can put "variables" there? I want specifically to keep calibration parameters somewhere so they don't disappear when the robot is powered down, but are still changeable by the program itself when necessary. I think reloading the program just to tweak a position feedback parameter is a bit klunky.

I expect there's someplace in the PIC I can stash things like that, but I don't know where to look to find out what I need to know in order to do it. Does anyone have some pointers for me?

[Mark McLeod]

Originally Posted by Alan Anderson

I know how to put constants in ROM. Is there any way I can put "variables" there? I want specifically to keep calibration parameters somewhere so they don't disappear when the robot is powered down, but are still changeable by the program itself when necessary. I think reloading the program just to tweak a position feedback parameter is a bit klunky.

I expect there's someplace in the PIC I can stash things like that, but I don't know where to look to find out what I need to know in order to do it. Does anyone have some pointers for me?

Sorry, you can't write to Read Only Memory.
The way to store your values is to use EEPROM.
Check the thread of EEPROM http://www.chiefdelphi.com/forums/showthread.php?t=22655

[Alan Anderson]

Originally Posted by Mark McLeod

The way to store your values is to use EEPROM.
Check the thread of EEPROM http://www.chiefdelphi.com/forums/showthread.php?t=22655

Thank you. That is exactly what I needed.