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package service
import "github.com/paypal/gatt"
func NewBatteryService() *gatt.Service {
lv := byte(100)
s := gatt.NewService(gatt.UUID16(0x180F))
c := s.AddCharacteristic(gatt.UUID16(0x2A19))
c.HandleReadFunc(
func(rsp gatt.ResponseWriter, req *gatt.ReadRequest) {
rsp.Write([]byte{lv})
lv--
})
// FIXME: this cause connection interrupted on Mac.
// Characteristic User Description
// c.AddDescriptor(gatt.UUID16(0x2901)).SetValue([]byte("Battery level between 0 and 100 percent"))
// Characteristic Presentation Format
c.AddDescriptor(gatt.UUID16(0x2904)).SetValue([]byte{4, 1, 39, 173, 1, 0, 0})
return s
}
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