Write Anything to EEPROM Arduino
Oct 19th, 2020 | by: ELECTRONOOBS
Simple Write to the EEPROM
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
Write/Read Anything to the EEPROM
When saving a number from 0-255, EEPROM.write is sufficient. When saving a larger number, you have to call the EEPROM routines more than once, to save a "high byte" and a "low byte" for 16-bit numbers, or even more often for bigger numbers or other data types that cannot fit in one byte.
With the following code, you can write and read any data structure or variable, using any number of bytes of EEPROM to do it (of course, only as many bytes as your chip holds), all in a single call.
A common use of this would be to have a group of related "persistent" variables that you want to save for future sessions. This could be a high-score list in a game, or a set of configuration choices in a device like an alarm clock.
The "EEPROM_writeAnything" and "EEPROM_readAnything" functions will automatically jump from the first byte to the next and save or read the entire number, even if the value if higher than 254. What you have to amke sure is to not overlap the EEPROM positions. For example, if you store first the number 1200 on position 0, you have to know that the process will ocupy positions 0, 1, 2, 3 and 4. So, the enxt number must be stored on position 5 higher.
EEPROM Write anything code | DOWNLOAD |
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Dimitrios Chr. Ioannidis
Very nice ! How about a tutorial for the use of the EEMEM attribute and uploading eep files for reduced SRAM usage ?
mo fateh
The EEPROM memory inside the ATmega microcontroller is sometimes called EEMEM It is the same