User's Manual

USER MANUAL PREVIEW

PTM 535BZ – BLUETOOTH AND ZIGBEE GREEN POWER PUSHBUTTON TRANSMITTER

5.6.4 BLE_SEC_CONFIG

The BLE_SEC_CONFIG register is used to configure security settings that are specific to BLE

telegram transmission.

The BLE_SECURITY_MODE field is intended for future implementation selecting the security

mode used by PTM 535BZ when transmitting BLE telegrams. Currently, the supported secu-

rity mode is using a 32 bit sequence counter to generate a 32 bit CMAC (signature) as de-

scribed in Chapter 3.4.2.

The BLE_KEY_SELECTION field is used to select the security key used for the authentication

of PTM 535BZ data telegrams as described in Chapter 3.4.2 and for the generation of Re-

solvable Private Addresses as described in Chapter 3.3.5.2. By default, SECURITY_KEY1 is

used; SECURITY_KEY2 can be selected by setting the BLE_KEY_SELECTION field to to 0b1.

Note that SECURITY_KEY2 cannot be read via the NFC interface.

The BLE_LRN_BUTTON field is used to enable and disable transmission of a BLE commis-

sioning telegram if the LRN button is pressed and SECURITY_KEY1 is selected. By default, a

BLE commissioning telegram will be transmitted if the LRN button is pressed and the ECO

200 harvester is actuated. Transmission of a commissioning telegram can be disabled by

setting the BLE_LRN_BUTTON field to 0b1.

Figure 39 below shows the BLE_SEC_CONFIG register.

Figure 39 – BLE_SEC_CONFIG register

The bit fields within the RADIO_CONFIG register are shown in Table 17 below. The default

settings are shown in bold.

Bit Configuration Option Supported Settings

1:0

BLE_SECURITY_MODE

Selection of the security Mode used

for BLE telegram transmission

0b00: 32 bit Sequence Counter with 32 bit Signature

0b01, 0b10, 0b11: RFU

3:2

BLE_KEY_SELECTION

Selection of the security key used for

authentication and RPA generation

0b00: Use SECURITY_KEY1 for authentication and RPA generation

0b01: Use SECURITY_KEY2 for authentication and RPA generation

0b10, 0b11: RFU

BLE_LRN_BUTTON

Use of LRN button for commissioning

telegram transmission

0b0: LRN Button press triggers commissioning telegram transmission

0b1: LRN Button press is ignored

7:5 RFU 0b0 (Always set to 0b0)

Table 17 – BLE_SEC_CONFIG settings