I have a Victron SmartSolar Charger MPPT 100/30 on firmware v1.64 (with SmartSolar Bluetooth Interface (Rev 3) on firmware v2.52), connected to a computer with a VE.Direct to USB Cable from Victron.
I can see the device on the computer, the port is /dev/serial/by-id/usb-VictronEnergy_BV_VE_Direct_cable_VE7I05IT-if00-port0, but no bytes come through this port.
On the MPPT, TX port function is set to “Normal communication”.
What can I do to debug this? I’ve ordered another cable, but assuming that doesn’t fix this, what else should I investigate?