Packet Encoding Format

Figure 1: Frame format.

For an architectural overview of Serialized Bluetooth Application, please see the Architecture module.

Commands and responses

Figure 2: Command and Response packet course.

Packet Type	Description
0x00 Command	The packet is sent from the application chip to the BLE S110 Connectivity Chip, where it will be decoded and the corresponding function in the S110 SoftDevice is executed.
0x01 Command Response	After a function in the S110 SoftDevice is received, the response is encoded in the BLE S110 Connectivity Chip and a response packet is sent to the application chip.
0x03 DTM Command	The packet is sent from the application chip to the BLE S110 Connectivity Chip, where it will be decoded and the chip will enter in the DTM mode.
0x04 DTM Command Response	Before BLE S110 Connectivity Chip enter in the DTM mode it sends response packet to the application chip.

Note: If the length field is invalid for the specific command, the call will return error code NRF_ERROR_INVALID_LENGTH from the codec in the Application Chip.

Events

Figure 3: Event packet course.

Packet Type	Description
0x02 Event	If an event is triggered in the S110 SoftDevice, an event packet is is sent from the BLE S110 Connectivity Chip to the application chip.

BLE S110 Events

BLE S110 GAP Events

BLE S110 GATTC Events

BLE S110 GATTS Events

BLE S110 L2CAP Events

BLE S110 Functions

BLE S110 GAP Functions

BLE S110 GATTC Functions

BLE S110 GATTS Functions

BLE S110 L2CAP Functions

BLE DTM