If the vines are purple with a white powdery-looking stuff on them and they come out of the ground 3 or 4 from one central point, they're raspberries. They should have few or no side branches, except near the tip right?
The raspberry is also medicinal, besides having fruit. For raspberry tea, gather the leaves in summer when they reach full-size and dry them in the shade. Raspberry leaf is a part of some blend of "relaxing" tea, and women use it for something, I'll let you look it up. On a similar subject, regular Blackberry leaf (dried) makes a good tea for diarrhea (sp). It has a lot of tannins and something that stops it pretty quick.