lutz/EMS
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3 Commits

Author SHA1 Message Date
Lutz Finsterle
56710b4328 Fix Viessmann API hostname and harden test propagation waits 
- Update apiBase: api.viessmann.com → api.viessmann-climatesolutions.com
  (Viessmann renamed their IoT API host; old domain is NXDOMAIN)
- Extend --test-viessmann context to 120s
- Add 30s propagation wait before read-back in both Stage 3 and Restore:
  cloud accepts writes immediately but gateway polls on its own schedule,
  so GET returns the last confirmed device value with ~30s lag

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
 2026-04-06 11:05:33 +02:00
Lutz Finsterle
8ba86f8fc8 Add --test-viessmann flag for end-to-end API validation 
Adds GetDHWTemperature() to the Viessmann client (GET on the DHW feature
endpoint) and a --test-viessmann CLI flag that runs three stages without
starting the EMS control loop:

  Stage 1: read current DHW setpoint (confirms auth + endpoint path)
  Stage 2: write same value back, read-back to confirm round-trip
  Stage 3: write +1°C, read-back to confirm, restore original

The +1°C delta is below the heat pump's 5°C hysteresis so the compressor
will not fire, but the change is visible in the Viessmann app for visual
confirmation before trusting the WW boost logic in production.

Usage: ./ems --config /etc/ems/ems-config.yaml --test-viessmann

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
 2026-04-06 10:59:57 +02:00
Lutz Finsterle
99613c52ae Initial commit: EMS — Energie Management System 
Complete self-consumption optimisation system for 7 kWp PV installation:
- Prometheus collector (grid power, SOC, PV, per-phase, compressor)
- Pure decision engine with SOC gates, hysteresis, priority ordering
- Shelly Gen1/Gen2 actuator (SHA-256 Digest auth, PM power readback)
- Viessmann OAuth2 client for DHW temperature control
- PV forecast integration (forecast.solar)
- Wallbox mutual exclusion (VX3 4.6 kW AC output constraint)
- Car-not-charging detection via Shelly PM
- Compressor idle → early SG-Ready release
- Per-phase grid power for single-phase wallbox decisions
- Manual override detection and web UI with override buttons
- Full unit test coverage for decision engine
- systemd service, Makefile, complete documentation

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
 2026-04-06 10:02:16 +02:00