Mosquitto on the car Orin (localhost only); UPS read by orin-status

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01DDwfd6Ki8UfG4hK6W5YpJz
2026-10-12 16:37:11 +09:00
parent 6f9d80d8b9
commit 872997281f
2 changed files with 51 additions and 0 deletions
@@ -97,6 +97,9 @@ All ports are taken.
 - Ignition-off shutdown (not built yet): on input loss the battery current turns clearly negative (discharging). A small service watches the
  INA219, waits out a grace period longer than a crank (30–60 s), then runs `systemctl poweroff`, with low battery voltage as a hard backstop.
  The shunt value is unconfirmed; check the schematic before converting shunt mV to amps.
+- Read every second by svc-core's `orin-status` (read-only: register pointers only, chip left at defaults), published as
+  `yukart/host/ups_*`: pack voltage, current (+ charging), state, and a charge estimate. Waveshare's demo code
+  (`UPS_Power_Module_C.zip`, `ina219.py`) assumes a 0.01 Ω shunt and gives the sign, and maps 9.0–12.6 V linearly to 0–100 %.
 - No GPIO or shutdown signal on the module; the BOOT button may be needed to wake a battery that stopped outputting (FAQ).

 ## USB camera (IMX662, Sunplus UVC bridge)