Storing info to the EEPROM

Phil_P

Hi Everyone,

I'm looking to develop an object that will allow users to store information within the EEPROM.

Essentially I'm looking to take RC decay data off of a pin and store that data into EEPROM for comparison purposes as a later time.

I'm guessing I:
1) Get the resistor into the proper position.
2) Calculate the RC decay for the resistor position.
3) Push a button (on a different pin that's listening) to record the RC data.
4) Then write that data to EEPROM (somehow).

At a later time, I'm going to read the previously stored RC decay data and compare it to the current resistor settings. This way I can ensure the pot (resistor) is back in exactly the same (or relatively close) position.

Does anyone have some sample code or know of an object that allows this type of functionality?

Thanks,
Phil

Mike Green

There's an object called "Basic I2C Driver" in the Propeller Object Exchange. It's designed for reading from and writing to an EEPROM including the one used to store your program. There's a brief example in the comments at the beginning of the object. Be careful about writing too often to the EEPROM. It's easier than you think to write 100,000 times to any one location and wear that location out.

Rayman

The easiest way I've found is with:

File: Propeller Eeprom.spin
Version: 0.6
Developed for forthcoming Propeller Education Kit Lab: EEPROM Datalogging and I2C


It has very simple routines to save data to the eeprom...

K2

Rayman wrote: »

File: Propeller Eeprom.spin
Version: 0.6
Developed for forthcoming Propeller Education Kit Lab: EEPROM Datalogging and I2C

Where is this file?!

Mike Green

There's a "sticky thread" called "Propeller Education Kit Labs, Tools, and Applications" at the top of the thread list. Look in there in the first message.

K2

Thanks, Mike, for your very timely answer. Note to Self: Stop ignoring sticky threads.

Great answers (you and jazzed) to Pascal22, too. Amazing how much more interesting the questions and answers are now.