Coronis WaveCard 25mW, User Manual

Page: 35 / 67

Document : CS-SUP-MUTI-WPORTAPP-E02.sxw
4.3- Presence detection principle between WAVECARD
Before establishing a data exchange with a distant equipment, it can be useful to check the presence and the
link budget of this device.
The Get_Type Command sent like a « Service Command » allows the distant Wavecard to process an
answer independently of the host equipment connected.
Data frame description is as follow :
➢ Service request
REQ_SEND_SERVICE
HEADER CMD DATA CRC ETX
3 bytes 1 byte 6 bytes 1 byte 2 bytes 1 byte
0xFF ; 0x02 ; 0x0B 0x80 Radio address of distant radio equipment
0x20
GET_TYPE
0x03
➢ Response to the service request
SERVICE_RESPONSE
HEADER CMD DATA CRC ETX
3 bytes 1 byte 6 bytes 1 byte 4 bytes 2 bytes 1 byte
0xFF ; 0x02 ; 0x0F 0x82
Radio address
of distant radio
equipment
0xA0
Paramètres :
1st byte
: Type corresponding to Wavecard
radio board = 0x12
2nd byte : RSSI Level
3rd byte : Distant Wavecard Wake Up period (in
second)
4th byte : Equipment Type connecting to
Wavecard ( default = 0x12)
0x03
WaveCard user handbook page 35 of 67