Can I get wired and wireless devices on the same subnet?

My DSL modem is set up as a bridge to my Sonic Wall which acts as DHCP server to my wired network.  My ORBI is connected to that network but it's also acting as a DHCP server and handing out addresses to wireless devices on a different subnet.  My mobile phone (wireless) can't reach my printers (wired) or my network storage devices.  Is it possible to configure my ORBI to hand out IP addresses within the same subnet as my wired devices so wired and wireless can communicate, or turn off ORBI DHCP and have my wireless devices obtain their IP addresses from my SonicWall?  I tried this once in advanced settings but nothing worked after I saved the changes and I had to reset to factory settings.  Perhaps I got some of the details wrong?  Any help/advice would be appreciated.