Unfortunately I don't have access to a Xiaomi Mi band, however, according to this website: Xiaomi Miband Bluetooth 4.0 Smart Bracelet it is a Bluetooth 4.0 device. As you may know Bluetooth 4.0 and BLE are pretty much the same thing, so I suggest you to check the Intel® Edison Bluetooth® User Guide on section 6.1 to learn how to interact with a BLE device.
Thanks. I was wondering more about any APIs or drivers available that could make it easier to communicate with the Mi band. I'm familiar with the Edison Bluetooth User Guide document, but I'm looking for Mi band details specifically.