User guide

Section 4. USB Communications

01 02 03 08

Example Set MAX_PACKET_SIZE property Response (Hex):

Result Code Data Len Data

00 00

Example Get MAX_PACKET_SIZE property Request (Hex):

Cmd Num Data Len Prp ID

00 01 03

Example Get MAX_PACKET_SIZE property Response (Hex):

Result Code Data Len Prp Value

00 01 08

INTERFACE_TYPE PROPERTY

Property ID: 16 (10 hex)

Property Type: Byte

Length: 1 byte

Get Property: Yes

Set Property: Yes

Default Value: 0 (HID)

Description: The value is a byte that represents the devices interface type. The value can

be set to 0 for the HID interface or to 1 for the keyboard emulation interface.

When the value is set to 0 (HID) the device will behave as described in the

HID manual. When the value is set to 1 (keyboard emulation) the device will

behave as described in the keyboard emulation manual. This property should

be the first property changed because it affects which other properties are

available. After this property is changed, the device should be power cycled

before changing any other properties. This property is stored in non-volatile

EEPROM memory so it will persist when the unit is power cycled. When this

property is changed, the unit must be power cycled to have these changes take

effect. If a value other than the default value is desired, it can be set by the

factory upon request. Examples follow:

Example Set INTERFACE_TYPE property Request (Hex):

Cmd Num Data Len Prp ID Prp Value

01 02 10 00

Example Set INTERFACE_TYPE property Response (Hex):

Result Code Data Len Data

00 00

Example Get INTERFACE_TYPE property Request (Hex):

Cmd Num Data Len Prp ID

00 01 10

Example Get INTERFACE_TYPE property Response (Hex):