Those leaves are definitely smooth with no hairs and the small dried up flower configurations (in your first close-up photo - upper right corner) really fits as does the trunk bark.
At this link below scroll to the bottom three photos.
I think you have P. psilo not P. xylocarpum:
thanks diane, but dirr does not mention those 2 species. it's nothing like the P hispida i have seen--too big, leaves too small,with smooth margin no serrations, flower not on panicle, but on a stalk, not fragrant, etc.
I don't know what it is, but ill be a naysayer on the locust. Usually more grey, and comes up in triangular peaks on a tree that large generally. Maybe im wrong though!!