My setup is an MPPSolar MPI 10K, a Raspberry Pi 4 nearby and Home Assistant on a server in my home network.
I run GitHub - fl4p/batmon-ha: Add-on for Home Assistant to connect JK, JBD, Daly, ANT, SOK and Supervolt BMS via Bluetooth on the Pi to monitor my battery vis BT, which works perfectly with full visibility of the all relevant data in my HA UI.
In parallel I started the GitHub - ned-kelly/docker-voltronic-homeassistant: Programmatically read data from your Voltronic, Axpert, Mppsolar PIP, Voltacon, Effekta etc Inverter and send it to Home Assistant via MQTT - Works with RS232 & USB! which leads to a visibility of all sensors in my HA UI. But no values.
I use the USB connection to the MPI 10K. Apparently the USB works works to communicate using SolarPower SW on a Win11 laptop.
Alternatively I tried the catalinbordan fork without any positive change.
Testing the communication leads to:
Mon Jan 6 14:17:23 2025 INVERTER: Debug set
Mon Jan 6 14:17:23 2025 DEBUG: Current CRC: 49 C1
Mon Jan 6 14:17:23 2025 DEBUG: Send buffer hex bytes: ( 51 4d 4f 44 49 c1 0d )
Mon Jan 6 14:17:23 2025 DEBUG: Write command failed, error number 32 was returned
Mon Jan 6 14:17:24 2025 DEBUG: Write command failed, error number 32 was returned
Has anyone a idea, how to approach this?