Wurth Elektronik AMB2621, User Manual, Page: 31 / 192

WIRELESS CONNECTIVITY & SENSORS
User manual Proteus-II
Connection setup and first data transmission
1. Power-up the modules and make their UARTs accessible by the host(s) (115200 Baud,
8n1). After the power-up or after reset the following sequence is sent from the module.
Info Module A Module B
⇐ Response
CMD_GETSTATE_CNF
:
Module A started in
ACTION_IDLE
mode.
02 41 02 00 01 01 41
⇐
Response
CMD_GETSTATE_CNF
:
Module B started in
ACTION_IDLE
mode.
02 41 02 00 01 01 41
2. Request the
FS_BTMAC
of both modules.
Info Module A Module B
⇒ Request
CMD_GET_REQ
with settings
index 4
02 10 01 00 04 17
⇐ Response
CMD_GET_CNF
:
FS_BTMAC
of
module A is 0x55 0x00 0x00 0xDA 0x18
0x00
02 50 07 00 00 55 00
00 DA 18 00 C2
⇒ Request
CMD_GET_REQ
with settings
index 4
02 10 01 00 04 17
⇐ Response
CMD_GET_CNF
:
FS_BTMAC
of
module B is 0x11 0x00 0x00 0xDA 0x18
0x00
02 50 07 00 00 11 00
00 DA 18 00 86
3. Connect module A to module B via Bluetooth
®
.
This example is taken from an older firmware. Using newer firmwares with the
optional Bluetooth
®
4.2 feature "LE Packet Length Extension", the maximum
supported payload per packet may be higher than 0x13.
Info Module A Module B
⇒
Request
CMD_CONNECT_REQ
with
FS_BTMAC
of module B
02 06 06 00 11 00 00
DA 18 00 D1
⇐
Response
CMD_CONNECT_CNF
: Request
understood, try to connect now
02 46 01 00 00 45
⇐
Indication
CMD_CONNECT_IND
: Physical
connection established successfully to
module with
FS_BTMAC
0x11 0x00 0x00
0xDA 0x18 0x00
02 86 07 00 00 11 00
00 DA 18 00 50
Order code 2608011x24010
29
Version 1.11 , July 2022 www.we-online.com/wcs