PRIMARY_SERVICE, GAP_SERVICE
CHARACTERISTIC, GAP_DEVICE_NAME, READ, "GATT Counter"

// add Battery Service
#import <battery_service.gatt>

PRIMARY_SERVICE, GATT_SERVICE
CHARACTERISTIC, GATT_DATABASE_HASH, READ,

// Counter Service
PRIMARY_SERVICE, 0000FF10-0000-1000-8000-00805F9B34FB
// Counter Characteristic, with read, write and notify
CHARACTERISTIC,  0000FF11-0000-1000-8000-00805F9B34FB, READ | WRITE | NOTIFY | DYNAMIC,