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71 lines
1.5 KiB
ReStructuredText
71 lines
1.5 KiB
ReStructuredText
.. include:: _controller_substitutions.repl
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.. _C016_page:
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|C016_typename|
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==================================================
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|C016_shortinfo|
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Controller details
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------------------
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Type: |C016_type|
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Name: |C016_name|
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Status: |C016_status|
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GitHub: |C016_github|_
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Maintainer: |C016_maintainer|
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Change log
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----------
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.. versionchanged:: 2.0
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...
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|added| 2019/04/05
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Initial pre-alpha version of this plugin.
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Description
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-----------
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This controller is a cache layer to collect data while not connected to a network.
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The data will first be stored in RTC memory, which will survive a crash/reboot and even an OTA update.
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If this RTC buffer is full, it will be flushed to whatever is set here as storage.
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Data Format
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-----------
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Each time a plugin sends data to this controller, a sample set is stored.
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A typical sample set contains:
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- UNIX timestamp
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- task index delivering the data
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- 4 float values
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Storage
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-------
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The controller can save the samples from RTC memory to several places on the flash:
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- Files on SPIFFS
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- Part reserved for OTA update (TODO)
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- Unused flash after the partitioned space (TODO)
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Data Delivery
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-------------
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The controller can deliver the data to:
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- Upload bin files to some server (HTTP post?) (TODO)
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- Provide a sample to any connected controller (TODO)
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- Do nothing and let some extern host pull the data from the node. (TODO)
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- JavaScript to process the data inside the browser. (TODO)
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- Feed it to some plugin (e.g. a display to show a chart) (TODO)
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