Winsoft ComPort for Android FT31xD 1.3 Full Source
Delphi and C++ Builder communication library for FTDI FT311D and FT312D devices for Android.
Supports the complete FT311D/FT312D functionality
No special root access privileges needed
Available for Delphi/C++ Builder XE6 – 10.2
Source code included in registered version
Royalty free distribution in applications