I currently have a seed studio gprs shield connected and working with my arduino project to receive text messages. Can I connect the same shield to my raspberry pi to gain internet access? Can I bridge an Ethernet shield with a grps shield? I would hate to have to buy a separate shield with another data plan.
HW: Pi I/O is 3.3V, Arduino is 5V. So you'll need level converters.
SW: You'll need software on the Pi that could talk to the shield, which may or may not exist today. That's out of scope for this forum.