Flashstorage made for Duo

kasperv79 wrote:Flashstorage library made for Duo.
Can this be converted

https://github.com/sebnil/DueFlashStorage

RogerClark wrote:
Anything can be converted if you have the time.

RogerClark wrote:kasperv79 wrote:Flashstorage library made for Duo.
Can this be converted

https://github.com/sebnil/DueFlashStorage

This flash library works with STM32 https://github.com/Marzogh/SPIFlash there’s some others.

kasperv79 wrote:RogerClark wrote:kasperv79 wrote:Flashstorage library made for Duo.
Can this be converted

https://github.com/sebnil/DueFlashStorage

I had a look and that flash library is for “emulating” an eeprom by using a block of flash memory, since the DUE doesn’t have internal eeprom like the AVR does.

We already have a library for such, and I think there is some older thread commenting on it.
Also there is an example of using it:
Arduino_STM32/STM32F1/libraries/EEPROM/examples/EEPROM_example/EEPROM_example.ino

Word of caution, an eeprom can be written to many hundreds of thousands of times, while flash can be written to only a few thousand times.
Also to write a byte in flash you normally need to erase and rewrite the block. So a write to any byte in the block counts as a write to every byte of the block. If you plan on writing a value once a week and read it many times, you are probably ok, but if you plan on writing often, you may wear out the block of flash.

How much “flash” do you need?
How many times do you intend to re-write it?

The answer to those two questions will let us know what type of flash or eerom is best suited to your task.

RogerClark wrote:
AFIK
EEPROM is just a name given by the Arduino team, for code to allow you to write to the program Flash.

In reality there is only Flash on most MCUs

Victor

Thanks for the clarification

Thanks for your reply’s.

Im aware of the rewrite cycles.
For this project its only a few integers I new to write 1-3 times a week. So I think the flash should be okay to use.