29 lines
897 B
Markdown
29 lines
897 B
Markdown
System of monitoring and controlling heating.
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Modules (called units) send their data via UDP.
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Each datagram contains JSON object of following form:
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{
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"id": "<ID>",
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"ip": "<IP>",
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"v1": "123",
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...
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}
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Where ID is unit's identifier (MAC address usually),
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IP is unit's current IP address (for server to be able
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to contact it).
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Other values in object are names and values of sensors
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available on the unit.
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Server could send datagram with some commands to unit.
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For simplicity datagram is simple string with command and
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optional arguments, everything separated with character 0x01.
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Possible commands are:
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1. ping - no arguments. Informs unit that server is still alive
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and able to communicate
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2. r_write - one argument either '0' or '1'. Sets relay state
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for unit (only for relay modules). Note that relay on relay modules
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is normally opened, so '0' means turned on and '1' means turned off. |