Trace me WiFi
Trace me WiFi is similar to the original mode as it also sends messages while the object is moving and stops sending them when it’s still. While moving, it periodically sends a message (the period length is defined in the Tracing delay register) so you can trace the monitored object. No more messages are sent after stop of movement is detected and reported. All mode-specific events are sent with 3 MAC addresses for better localisation precision.
Trace me WiFi
Hex value: 0x17
Use cases: Package tracing for postal services, tracing trucks, river transport boats and more
Devices that support this mode: SimplePack Plus
Required sensors: Accelerometer, WiFi module
Mode-specific deltas:
Deltas are mode-specific register values different from register default values.
Register (hex)
Default (hex)
Delta (hex)
Delta information
Sleep time (0x04)
1 minute (0x41)
10 minutes (0x4A)
Sleep time prolonged
Mode-specific events (uplink messages):
For more information on what uplink messages (mode-independent events) and additional data from various sensors in the device (appended payload) can be sent regardless of mode and how to fine-tune message behavior (alerts), see Mode-independent information and events.
Hex
Event name
Alert
Event information
8C
Start of movement with WiFi 1/2
1
Accelerometer-based movement detection, sent with 3 MAC addresses
8D
Start of movement with WiFi 2/2
1
8E
Stop of movement with WiFi 1/2
2
Arrival delay countdown expired, no movement detected anymore, sent with 3 MAC addresses
8F
Stop of movement with WiFi 2/2
2
98
Tracing tag with WiFi 1/2
3
Periodical event sent only while moving, sent with 3 MAC addresses
99
Tracing tag with WiFi 2/2
3
Registers relevant for this mode:
If you change the general sensitivity of the accelerometer and the magnetometer (0x11 and 0x19), respective axis registers reset to 0 as the general settings replace them and vice versa.
Hex
Register name
Default value (hex)
0x02
Departure delay
15 seconds (0x0F)
0x03
Arrival delay
10 minutes (0x4A)
0x04
Sleep time
1 minute (0x41)
0x05
Tracing interval
10 minutes (0x4A)
0x11
Accelerometer sensitivity
7 (0x07)
0x12
Accelerometer X axis sensitivity
7 (0x07)
0x13
Accelerometer Y axis sensitivity
7 (0x07)
0x14
Accelerometer Z axis sensitivity
7 (0x07)
0x3C
Accelerometer measurement period
1 second (0x01)
0x49
Accelerometer detection delay
0 seconds (0x00)
Similar modes:
Hex
Mode name
Description
0x04
Trace me
Original version of Trace me, no WiFi
0x2F
Trace me WiFi Atlas
WiFi Atlas version of Trace me
0x53
Trace me WiFi Precise
WiFi Precise version of Trace me
Switching to mode, arming and disarming information:
Follow the Basic Operations With SimpleHw Devices guide, where you can also find information about LED behavior, relevant Sigfox messages and more.
Here’s what’s important for Trace me WiFi messages:
To set this mode, the downlink needs to include this mode register setting: 0117
The uplink messages need to begin with the mode hex as the first byte: 17
When arming the device, you should see this message: 1710
When the device is armed, it should send you these two bytes: 1711
If you disarm the device via long press, you should receive this message: 1714
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