Persistence / Remember Value

Firmware
1

Hello,

Say I publish at the rate of every 5 seconds, then I use the Particle.function to change the publish rate to 30 seconds. However, if I power cycle the Particle Electron, the program starts publishing at 5 seconds interval again. Is there a way to “store” a variable value in the Particle Electron?

Thanks.

2

https://docs.particle.io/reference/device-os/firmware/electron/#storing-data-in-backup-ram-sram-

3

The best method to store persistent parameters is to use EEPROM. Retained RAM is another approach but be aware that you need to keep power on the VBAT pin otherwise a power cycle will wipe it. If you search the forum EEPROM or Retained RAM you will find many examples - @shanevanj has provided one such to the reference documents.

3 Likes
4

Thanks for the directions and points.
Much appreciated.

5

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