hardware - Custom External Ports not showing on custom IP Core - Zedboard -

i trying build custom ip peripheral (my_perph). have used cip tool generate basic perph , want add custom external port (my_port).

basically followed tutorial http://www.programmableplanet.com/author.asp?section_id=2142&doc_id=264841.

i have added external port definitions top source vhdl my_perph.vhdl . i.e

port( ---add user defined ports here---- my_port : out std_logic; 

i added port mpd file syntax:

port my_port = "", dir = o, io_if = my_port_0, io_is = my_port 

this didn't work tried losing 0 match name of vhdl declared port so:

port my_port = "", dir = o, io_if = my_port, io_is = my_port 

the issue once have re-scanned ip library error saying there

no io_interface matching my_port 

it seems custom external port my_port not being recognised in ip design although exists in hdl of included ip entity.

and when go add perph find port not show in info. totally lost have followed tutorials , tired every possible thing can think of!

read platform specification format guide. need understand of mpd file, before copy , pasting lines within it. line have needs have matching io_interface section (as error message tells you)

if io not part of "standard" io port (see io_interface section of psf) should able use simply:

port my_port = "", dir = o