How to save data (over deep sleep) permanently ? (solved)

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#How to save data (over deep sleep) permanently ? (solved)

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kaxori 07/05/2023 08:39 AM

I want to save settings, states, ... and recover them after restart.(edited)

bitphlipphar 07/05/2023 08:39 AM

Hi @kaxori. You can store such data in flash or RTC memory.

bitphlipphar 07/05/2023 08:40 AM

RTC memory is a bit tricky because it is cleared if you power-cycle or reset -- but it does survive deep sleeps.

bitphlipphar 07/05/2023 08:40 AM

If you really want "permanent", you should look at flash.

bitphlipphar 07/05/2023 08:41 AM

Toit comes with support for storage buckets backed by flash or RTC memory.

kaxori 07/05/2023 08:41 AM

Do you have examples ready?

bitphlipphar 07/05/2023 08:41 AM

https://github.com/toitlang/toit/blob/master/tests/storage_test.toit <-- this might be a bit rich, but it covers most of the functionality.

toit/tests/storage_test.toit at master · toitlang/toit

Program your microcontrollers in a fast and robust high-level language. - toit/tests/storage_test.toit at master · toitlang/toit

bitphlipphar 07/05/2023 08:44 AM

Here is a short example:

import system.storage
main:
  bucket := storage.Bucket.open --flash "my-data-bucket"
  try:
    value := bucket.get "my-key"
    print "existing = $value"
    if value is int: value = value + 1
    else: value = 0
    bucket["my-key"] = value
  finally:
    bucket.close

kaxori 07/05/2023 08:45 AM

thank you for your fast answer

10 messages in total