OY1700 LoRaWAN Air quality (PM) sensor, User manual, Version 0.1
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7
Security
The device has the following security features:
•
Cryptographical coprocessor for ultra-secure hardware based key storage
•
Secure boot
•
Encrypted FW
•
Message encryption (AES-128 bit)
•
Message integrity (MIC AES-128 bit)
•
No port access to device.
8
Protocol
The protocol consists of different types of data
-
LoRaWAN v.1.0.2 standard commands
-
Unsolicited uplink status commands during configure state
-
Periodic measurement reports
-
Downlink commands and queries
-
Uplink query response
Note 0x denotation means hexadecimal encoded.
8.1
LoRaWAN standard commands
All standard LoRaWAN v 1.0.2 are supported. Please refer to the LoRaWAN standard for the
protocol definition.
8.2
Unsolicited uplink status commands
The sensor polls the server for configuration parameters the during the
Configure
state. This
is done by sending unsolicited uplink status report (0x20). This gives quick feedback to the
installer that the installation has been successful and enables downlink configuration
commands to be sent. After approximately 2 minutes the device changes to
Operational
state. See chapter 6.5 for details of the Status report.
Port:
Port 1
Payload 0x01 20 00
0x01: Data type
0x20: Status command
