10 lines
674 B
Markdown
10 lines
674 B
Markdown
# esp-multical21
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ESP8266 decrypts wireless MBus frames from a Multical21 water meter
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A CC1101 868 MHz modul is connected via SPI to the ESP8266 an configured to receive Wireless MBus frames.
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The Multical21 is sending every 16 seconds wireless MBus frames (Mode C1, frame type B). The encrypted
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frames are received from the ESP8266 an it decrypts them with AES-128-CTR. The meter information
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(total counter, target counter, medium temperature, ambient temperature, alalm flags (BURST, LEAK, DRY,
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REVERSE) are sent via MQTT to a smarthomeNG/smartVISU service (running on a raspberry).
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Thanks to [weetmuts](https://github.com/weetmuts) for his great job on the wmbusmeters.
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