Data Types#
Data types used in the documentation are shown in the table below. Unless otherwise noted, all multi-byte fields are in little endian format.
Name | Length | Description |
|---|---|---|
td1 | td2 | Result code
|
int16 | 2 bytes | Signed 16-bit integer |
bd_addr | 6 bytes | Bluetooth address |
uint16 | 2 bytes | Unsigned 16-bit integer |
int32 | 4 bytes | Signed 32-bit integer |
uint32 | 4 bytes | Unsigned 32-bit integer |
link_id_t | 2 bytes | Link ID |
int8 | 1 byte | Signed 8-bit integer |
uint8 | 1 byte | Unsigned 8-bit integer |
uint8array | 1- 256 bytes | Variable length byte array. The first byte defines the length of the data that follows, 0 - |
255 bytes. | ||
ser_name | 16 bytes | Service name, 16-byte array |
dbm | 1 byte | Signal strength |
connection | 1 byte | Connection handle |
service | 4 bytes | GATT service handle |
This value is normally received from the gatt_service event. | ||
characteristic | 2 bytes | GATT service handle |
This value is normally received from the gatt_characteristic event. | ||
descriptor | 2 bytes | GATT characteristic descriptor handle |
uuid | 3 or 17 bytes | uint8array containing a 2 or 16 bytes Universal Unique Identifier (UUID) |
att_errorcode | 1 byte | Attribute protocol code |
- 0: No error | ||
- Non-zero: See Bluetooth specification, Host volume, Attribute Protocol, Error Codes table. | ||
att_opcode | 1 byte | Attribute opcode which informs the procedure from which attribute the value was received |
uuid_128 | 16 bytes | 128-bit UUID |
aes_key_128 | 16 bytes | 128-bit AES Key |