Abeeway Micro Tracker - Page 28

Micro Tracker Reference Guide FW 1.7 V1.1
Page 28 of 39
11th october 2018
Restricted distribution
v_bat5: encoded voltage at T0 + 2 seconds.
v_bat6: encoded voltage at T0 + 2.5 seconds.
Notes:
1- Most of time a WIFI timeout occurs due to low battery.
2- v_bat encoding uses lo=2.8, hi=4.2, nbits=8, nresv=2. It is expressed in volt with a step of 5.5mV
3- Encoded form is detailed in the Encoded form section
5.5.4 WIFI failure payload
Common header
Data
Byte 0-4
Byte 5
Byte 6
Byte 7
Byte 8
Byte 9
Byte 10
Byte 11
Header
v_bat1
v_bat2
v_bat3
v_bat4
v_bat5
v_bat6
Error
v_bat1: encoded voltage at the start time (T0) of the WIFI scan.
v_bat2: encoded voltage at T0 + 0.5 second.
v_bat3: encoded voltage at T0 + 1 second.
v_bat4: encoded voltage at T0 + 1.5 second.
v_bat5: encoded voltage at T0 + 2 seconds.
v_bat6: encoded voltage at T0 + 2.5 seconds.
Error:
➢ 0– WIFI connection failure
➢ 1 – Scan failure
➢ 2 – Antenna unavailable
➢ 3 – WIFI not supported on this device
Notes:
1- Most of time a WIFI timeout occurs due to a low battery condition.
2- v_bat encoding uses lo=2.8, hi=4.2, nbits=8, nresv=2. It is expressed in volt with a step of 5.5mV
3- Encoded form is detailed in the Encoded form section
5.5.5 WIFI BSSID payload
Common header
Data
Byte 0-4
Byte5
B 6-11
Byte12
B 13-18
Byte19
B 20-25
Byte26
B 27-33
Byte 34
Header
Age
BSSID0
RSSI0
BSSID1
RSSI1
BSSID2
RSSI2
BSSID3
RSSI3
Age: encoded form of scan age with lo=0, hi=2040, nbits=8, nres=0. Expressed in seconds.
BSSID x: BSSID of the WIFI station x.
RSSI x: Receive Signal Strength Indication of the WIFI station x. Non encoded form (signed 8 bits). It is
expressed in dBm.
Notes
1- The payload contains the listened WIFI stations (up to 4).
2- If less than 4 stations are listened, the payload will be reduced.
3- BSSID address is provided in big endian format. So, the byte 6 of the payload contains the MSB of the
BSSID0, while the byte 11 contains its LSB.
4- Encoded form is detailed in the Encoded form section.