@ssean - did you find out if the Daly Smart BMS could support the Deye inverter or find any info on custom firmware for it?
The Deye inverter supports Pylontech, Freedomwon, an Dyness among others, but I have only found the Pylontech CAN protocol document and the messages are different from Deye.
If anyone has the Freedomwon CAN protocol I would like to take a look.
Daly CAN protocol is available from here: https://diysolarforum.com/resources/daly-smart-bms-manual-and-documentation.48/
Cheers,
Eric