Crash_Override/ESP32_ChinaDieselHeater_Control
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Update JSON dictionary

Ray Jones 2019-01-11 03:02:02 +00:00
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JSON-dictionary.md

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# JSON Commands
Information is exchanged between the ESP32 and remote clients using JSON string formatting.
Only actual changes are transmitted to minimise traffic.
However, whenever a new client attaches to the ESP32, every client receives the full set of information.
i.e. every time a client connects, they will always get the complete status of the heater, then only changes to the values.
The table below documents the JSON names sent between the ESP32 and Bluetooth or WiFi clients.
Some commands are bi-directional, others are simply command directives (to ESP32), or status reporting (from ESP32).
Certain commands are used to alter the non volatile settings stored by the controller. eg Fuel mixture, timers.
**These must be followed up with a NVSave command.**
| **Name** | **Value Type** | **Typical Values** | **Direction** | **Require NVsave** |
| ------ | ------ | ------ | ------ | :------: |
| BluewireStat| string | "OEM" _or_ "BTC" + ",Htr" _(if present)_ | From ESP | n/a |