Datasheet

Page 97 of 161
nRF8001 Product Specification
Revision 1.2
24.2 Echo (0x02)
Echo (0x0E) tests the nRF8001 ACI transport layer.
24.2.1 Functional description
Upon receiving an Echo command, nRF8001 returns an EchoEvent containing the identical command
packet data to the application controller.
The reception of a loopback packet confirms a working ACI transport layer.
See the operating mode during which this command can be used in Table 31. on page 92
. The command
will return a command response event with status ACI_STATUS_ERROR_DEVICE_STATE_INVALID
when it is used in the incorrect mode.
24.2.2 Message format
Table 37.ACI message format for Echo
24.2.3 Accepted values
Any value from 0..29 bytes is accepted for this command.
24.2.4 Returned events
This command returns an EchoEvent.
24.2.5 Bluetooth low energy procedures used
None
Message field/parameter
Value size
(bytes)
Data value Description
Header
Length 1 1..30 Packet length
Command 1 0x02
Echo
Content
Data 0..29 Any data