liudr:
Mine compiled just fine on arduino 1.0 and 1.5 just now.Can you compile sample code phi_button_groups_01 inside phi_interfaces library sample code collection? I want to know if this library is working.
Also have you restarted arduino ide (closing all windows) after you install the libraries?
phi_button_groups_01 compiles without problem. (and yes, the IDE has been restarted)