forked from go-ble/ble
/
uuid.go
217 lines (199 loc) · 12.3 KB
/
uuid.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
package ble
import (
"bytes"
"encoding/binary"
"encoding/hex"
"fmt"
"strings"
)
// A UUID is a BLE UUID.
type UUID []byte
// UUID16 converts a uint16 (such as 0x1800) to a UUID.
func UUID16(i uint16) UUID {
b := make([]byte, 2)
binary.LittleEndian.PutUint16(b, i)
return UUID(b)
}
// Parse parses a standard-format UUID string, such
// as "1800" or "34DA3AD1-7110-41A1-B1EF-4430F509CDE7".
func Parse(s string) (UUID, error) {
s = strings.Replace(s, "-", "", -1)
b, err := hex.DecodeString(s)
if err != nil {
return nil, err
}
if err := lenErr(len(b)); err != nil {
return nil, err
}
return UUID(Reverse(b)), nil
}
// MustParse parses a standard-format UUID string,
// like Parse, but panics in case of error.
func MustParse(s string) UUID {
u, err := Parse(s)
if err != nil {
panic(err)
}
return u
}
// lenErr returns an error if n is an invalid UUID length.
func lenErr(n int) error {
switch n {
case 2, 16:
return nil
}
return fmt.Errorf("UUIDs must have length 2 or 16, got %d", n)
}
// Len returns the length of the UUID, in bytes.
// BLE UUIDs are either 2 or 16 bytes.
func (u UUID) Len() int {
return len(u)
}
// String hex-encodes a UUID.
func (u UUID) String() string {
return fmt.Sprintf("%x", Reverse(u))
}
// Equal returns a boolean reporting whether v represent the same UUID as u.
func (u UUID) Equal(v UUID) bool {
return bytes.Equal(u, v)
}
// Contains returns a boolean reporting whether u is in the slice s.
func Contains(s []UUID, u UUID) bool {
if s == nil {
return true
}
for _, a := range s {
if a.Equal(u) {
return true
}
}
return false
}
// Reverse returns a reversed copy of u.
func Reverse(u []byte) []byte {
// Special-case 16 bit UUIDS for speed.
l := len(u)
if l == 2 {
return []byte{u[1], u[0]}
}
b := make([]byte, l)
for i := 0; i < l/2+1; i++ {
b[i], b[l-i-1] = u[l-i-1], u[i]
}
return b
}
// Name returns name of know services, characteristics, or descriptors.
func Name(u UUID) string {
return knownUUID[u.String()].Name
}
// A dictionary of known service names and type (keyed by service uuid)
var knownUUID = map[string]struct{ Name, Type string }{
"1800": {Name: "Generic Access", Type: "org.bluetooth.service.generic_access"},
"1801": {Name: "Generic Attribute", Type: "org.bluetooth.service.generic_attribute"},
"1802": {Name: "Immediate Alert", Type: "org.bluetooth.service.immediate_alert"},
"1803": {Name: "Link Loss", Type: "org.bluetooth.service.link_loss"},
"1804": {Name: "Tx Power", Type: "org.bluetooth.service.tx_power"},
"1805": {Name: "Current Time Service", Type: "org.bluetooth.service.current_time"},
"1806": {Name: "Reference Time Update Service", Type: "org.bluetooth.service.reference_time_update"},
"1807": {Name: "Next DST Change Service", Type: "org.bluetooth.service.next_dst_change"},
"1808": {Name: "Glucose", Type: "org.bluetooth.service.glucose"},
"1809": {Name: "Health Thermometer", Type: "org.bluetooth.service.health_thermometer"},
"180a": {Name: "Device Information", Type: "org.bluetooth.service.device_information"},
"180d": {Name: "Heart Rate", Type: "org.bluetooth.service.heart_rate"},
"180e": {Name: "Phone Alert Status Service", Type: "org.bluetooth.service.phone_alert_service"},
"180f": {Name: "Battery Service", Type: "org.bluetooth.service.battery_service"},
"1810": {Name: "Blood Pressure", Type: "org.bluetooth.service.blood_pressuer"},
"1811": {Name: "Alert Notification Service", Type: "org.bluetooth.service.alert_notification"},
"1812": {Name: "Human Interface Device", Type: "org.bluetooth.service.human_interface_device"},
"1813": {Name: "Scan Parameters", Type: "org.bluetooth.service.scan_parameters"},
"1814": {Name: "Running Speed and Cadence", Type: "org.bluetooth.service.running_speed_and_cadence"},
"1815": {Name: "Cycling Speed and Cadence", Type: "org.bluetooth.service.cycling_speed_and_cadence"},
// A dictionary of known descriptor names and type (keyed by attribute uuid)
"2800": {Name: "Primary Service", Type: "org.bluetooth.attribute.gatt.primary_service_declaration"},
"2801": {Name: "Secondary Service", Type: "org.bluetooth.attribute.gatt.secondary_service_declaration"},
"2802": {Name: "Include", Type: "org.bluetooth.attribute.gatt.include_declaration"},
"2803": {Name: "Characteristic", Type: "org.bluetooth.attribute.gatt.characteristic_declaration"},
// A dictionary of known descriptor names and type (keyed by descriptor uuid)
"2900": {Name: "Characteristic Extended Properties", Type: "org.bluetooth.descriptor.gatt.characteristic_extended_properties"},
"2901": {Name: "Characteristic User Description", Type: "org.bluetooth.descriptor.gatt.characteristic_user_description"},
"2902": {Name: "Client Characteristic Configuration", Type: "org.bluetooth.descriptor.gatt.client_characteristic_configuration"},
"2903": {Name: "Server Characteristic Configuration", Type: "org.bluetooth.descriptor.gatt.server_characteristic_configuration"},
"2904": {Name: "Characteristic Presentation Format", Type: "org.bluetooth.descriptor.gatt.characteristic_presentation_format"},
"2905": {Name: "Characteristic Aggregate Format", Type: "org.bluetooth.descriptor.gatt.characteristic_aggregate_format"},
"2906": {Name: "Valid Range", Type: "org.bluetooth.descriptor.valid_range"},
"2907": {Name: "External Report Reference", Type: "org.bluetooth.descriptor.external_report_reference"},
"2908": {Name: "Report Reference", Type: "org.bluetooth.descriptor.report_reference"},
// A dictionary of known characteristic names and type (keyed by characteristic uuid)
"2a00": {Name: "Device Name", Type: "org.bluetooth.characteristic.ble.device_name"},
"2a01": {Name: "Appearance", Type: "org.bluetooth.characteristic.ble.appearance"},
"2a02": {Name: "Peripheral Privacy Flag", Type: "org.bluetooth.characteristic.ble.peripheral_privacy_flag"},
"2a03": {Name: "Reconnection Address", Type: "org.bluetooth.characteristic.ble.reconnection_address"},
"2a04": {Name: "Peripheral Preferred Connection Parameters", Type: "org.bluetooth.characteristic.ble.peripheral_preferred_connection_parameters"},
"2a05": {Name: "Service Changed", Type: "org.bluetooth.characteristic.gatt.service_changed"},
"2a06": {Name: "Alert Level", Type: "org.bluetooth.characteristic.alert_level"},
"2a07": {Name: "Tx Power Level", Type: "org.bluetooth.characteristic.tx_power_level"},
"2a08": {Name: "Date Time", Type: "org.bluetooth.characteristic.date_time"},
"2a09": {Name: "Day of Week", Type: "org.bluetooth.characteristic.day_of_week"},
"2a0a": {Name: "Day Date Time", Type: "org.bluetooth.characteristic.day_date_time"},
"2a0c": {Name: "Exact Time 256", Type: "org.bluetooth.characteristic.exact_time_256"},
"2a0d": {Name: "DST Offset", Type: "org.bluetooth.characteristic.dst_offset"},
"2a0e": {Name: "Time Zone", Type: "org.bluetooth.characteristic.time_zone"},
"2a0f": {Name: "Local Time Information", Type: "org.bluetooth.characteristic.local_time_information"},
"2a11": {Name: "Time with DST", Type: "org.bluetooth.characteristic.time_with_dst"},
"2a12": {Name: "Time Accuracy", Type: "org.bluetooth.characteristic.time_accuracy"},
"2a13": {Name: "Time Source", Type: "org.bluetooth.characteristic.time_source"},
"2a14": {Name: "Reference Time Information", Type: "org.bluetooth.characteristic.reference_time_information"},
"2a16": {Name: "Time Update Control Point", Type: "org.bluetooth.characteristic.time_update_control_point"},
"2a17": {Name: "Time Update State", Type: "org.bluetooth.characteristic.time_update_state"},
"2a18": {Name: "Glucose Measurement", Type: "org.bluetooth.characteristic.glucose_measurement"},
"2a19": {Name: "Battery Level", Type: "org.bluetooth.characteristic.battery_level"},
"2a1c": {Name: "Temperature Measurement", Type: "org.bluetooth.characteristic.temperature_measurement"},
"2a1d": {Name: "Temperature Type", Type: "org.bluetooth.characteristic.temperature_type"},
"2a1e": {Name: "Intermediate Temperature", Type: "org.bluetooth.characteristic.intermediate_temperature"},
"2a21": {Name: "Measurement Interval", Type: "org.bluetooth.characteristic.measurement_interval"},
"2a22": {Name: "Boot Keyboard Input Report", Type: "org.bluetooth.characteristic.boot_keyboard_input_report"},
"2a23": {Name: "System ID", Type: "org.bluetooth.characteristic.system_id"},
"2a24": {Name: "Model Number String", Type: "org.bluetooth.characteristic.model_number_string"},
"2a25": {Name: "Serial Number String", Type: "org.bluetooth.characteristic.serial_number_string"},
"2a26": {Name: "Firmware Revision String", Type: "org.bluetooth.characteristic.firmware_revision_string"},
"2a27": {Name: "Hardware Revision String", Type: "org.bluetooth.characteristic.hardware_revision_string"},
"2a28": {Name: "Software Revision String", Type: "org.bluetooth.characteristic.software_revision_string"},
"2a29": {Name: "Manufacturer Name String", Type: "org.bluetooth.characteristic.manufacturer_name_string"},
"2a2a": {Name: "IEEE 11073-20601 Regulatory Certification Data List", Type: "org.bluetooth.characteristic.ieee_11073-20601_regulatory_certification_data_list"},
"2a2b": {Name: "Current Time", Type: "org.bluetooth.characteristic.current_time"},
"2a31": {Name: "Scan Refresh", Type: "org.bluetooth.characteristic.scan_refresh"},
"2a32": {Name: "Boot Keyboard Output Report", Type: "org.bluetooth.characteristic.boot_keyboard_output_report"},
"2a33": {Name: "Boot Mouse Input Report", Type: "org.bluetooth.characteristic.boot_mouse_input_report"},
"2a34": {Name: "Glucose Measurement Context", Type: "org.bluetooth.characteristic.glucose_measurement_context"},
"2a35": {Name: "Blood Pressure Measurement", Type: "org.bluetooth.characteristic.blood_pressure_measurement"},
"2a36": {Name: "Intermediate Cuff Pressure", Type: "org.bluetooth.characteristic.intermediate_blood_pressure"},
"2a37": {Name: "Heart Rate Measurement", Type: "org.bluetooth.characteristic.heart_rate_measurement"},
"2a38": {Name: "Body Sensor Location", Type: "org.bluetooth.characteristic.body_sensor_location"},
"2a39": {Name: "Heart Rate Control Point", Type: "org.bluetooth.characteristic.heart_rate_control_point"},
"2a3f": {Name: "Alert Status", Type: "org.bluetooth.characteristic.alert_status"},
"2a40": {Name: "Ringer Control Point", Type: "org.bluetooth.characteristic.ringer_control_point"},
"2a41": {Name: "Ringer Setting", Type: "org.bluetooth.characteristic.ringer_setting"},
"2a42": {Name: "Alert Category ID Bit Mask", Type: "org.bluetooth.characteristic.alert_category_id_bit_mask"},
"2a43": {Name: "Alert Category ID", Type: "org.bluetooth.characteristic.alert_category_id"},
"2a44": {Name: "Alert Notification Control Point", Type: "org.bluetooth.characteristic.alert_notification_control_point"},
"2a45": {Name: "Unread Alert Status", Type: "org.bluetooth.characteristic.unread_alert_status"},
"2a46": {Name: "New Alert", Type: "org.bluetooth.characteristic.new_alert"},
"2a47": {Name: "Supported New Alert Category", Type: "org.bluetooth.characteristic.supported_new_alert_category"},
"2a48": {Name: "Supported Unread Alert Category", Type: "org.bluetooth.characteristic.supported_unread_alert_category"},
"2a49": {Name: "Blood Pressure Feature", Type: "org.bluetooth.characteristic.blood_pressure_feature"},
"2a4a": {Name: "HID Information", Type: "org.bluetooth.characteristic.hid_information"},
"2a4b": {Name: "Report Map", Type: "org.bluetooth.characteristic.report_map"},
"2a4c": {Name: "HID Control Point", Type: "org.bluetooth.characteristic.hid_control_point"},
"2a4d": {Name: "Report", Type: "org.bluetooth.characteristic.report"},
"2a4e": {Name: "Protocol Mode", Type: "org.bluetooth.characteristic.protocol_mode"},
"2a4f": {Name: "Scan Interval Window", Type: "org.bluetooth.characteristic.scan_interval_window"},
"2a50": {Name: "PnP ID", Type: "org.bluetooth.characteristic.pnp_id"},
"2a51": {Name: "Glucose Feature", Type: "org.bluetooth.characteristic.glucose_feature"},
"2a52": {Name: "Record Access Control Point", Type: "org.bluetooth.characteristic.record_access_control_point"},
"2a53": {Name: "RSC Measurement", Type: "org.bluetooth.characteristic.rsc_measurement"},
"2a54": {Name: "RSC Feature", Type: "org.bluetooth.characteristic.rsc_feature"},
"2a55": {Name: "SC Control Point", Type: "org.bluetooth.characteristic.sc_control_point"},
"2a5b": {Name: "CSC Measurement", Type: "org.bluetooth.characteristic.csc_measurement"},
"2a5c": {Name: "CSC Feature", Type: "org.bluetooth.characteristic.csc_feature"},
"2a5d": {Name: "Sensor Location", Type: "org.bluetooth.characteristic.sensor_location"},
}