Elsat iNode Manuale di istruzioni - Pagina 9

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iNode Serial Transceiver USB – instruction manual

Data sent over the UART is HCI frames HEX-encoded (for one byte there are two ASCII

characters). At the end of the data being transmitted is always 0x0d, 0x0a. In the case of loss of

synchronization on the HCI frame level, you can retrieve it by sending 0x0d, 0x0a. They can be

added to each frame sent to the HCI module.

Data coding scheme in advertisement frame and response for active scan.

Information about AD Type codes can be found in a Core_V4.0.pdf: Volume 3 Part C, Section 8.

and at the page

https://www.bluetooth.org/en-us/specification/assigned-numbers/generic-access-

profile

HCI frame with BLE scan result (advertisement frame):

043E2802010000A35F356F12001C0201061107694E6F6465204E61760000000000000003FF00

80020AFEAD

043E28

04 - HCI packet indicator: 0x04 EVENT (Core_V4.0.pdf: Volume 2 Part E, Section 5.4)

3E - event_code = 0x3e -> LE EVENTS

28 - HCI parameter total length -> 0x28 = 40

02010000A35F356F12001C0201061107694E6F6465204E61760000000000000003FF0080020A

FEAD - event_parameters:

02 - Subevent_Code = 0x02 -> LE Advertising Report event

01 - Num_Reports = 0x01 -> number of responses in event (always 1)

00 - Event_Type[i] = 0x00 -> connectable undirected advertising (ADV_IND)

00 - Address_Type[i] = 0x00 -> public device address

A35F356F1200 - Address[i] = 0x00126F355FA3 (Public Device Address)

1C - Length_Data[i] = 0x1C = 28 (length of the Data[i] field)

0201061107694E6F6465204E61760000000000000003FF0080020AFE

Length_Data[i] octets of advertising or scan response data formatted as defined in

Core_V4.0.pdf:

us/specification/assigned-numbers/generic-access-profile

02 - 0x02 -> Length = 0x02

0106 -> Data

11 - 0x11 -> Length = 0x11 = 17

07694E6F6465204E617600000000000000 -> Data

02 - 0x02 -> Length = 0x02 = 2

0AFE -> Data

Volume

Part

01 - 0x01 -> EIR Data Type = 0x01 -> «Flags»

06 - 0x06 -> EIR Data = 0x06 -> LE General Discoverable Mode (bit 1),

BR/EDR Not Supported (bit 2)

07 - 0x07 -> EIR Data Type = 0x07 -> «Complete List of 128-bit Service

Class UUIDs»

694E6F6465204E617600000000000000 -> EIR Data = "iNode Nav"

(UUID128 w postaci 16 znaków ASCII)

03 - 0x03 -> Length = 0x03 = 3

FF0080 -> Data

FF -> EIR Data Type = 0xff -> «Manufacturer Specific Data»

0080 -> 0x8000 iNodeNav identifier

0A -> EIR Data Type = 0x0a -> «Tx Power Level»

FE -> 0xfe = -2 dBm

Section

ELSAT s.c.

Data[i]

https://www.bluetooth.org/en-

page 9