GW-WIFI-01
User_Guide_GW -WIFI-01_180511
Page 6
Operation
Start up
GW-WIFI-01 is turned on by connecting a USB power supply or by pressing the
Control
button to be supplied from internal
accumulator (when no external power source is connected).
Initialization
After the start-up, the GW checks its own hardware first. If there is no critical error it starts to initialize WiFi connection. When
a critical error occurs, the execution does not continue and the error code is indicated by LEDs.
Communication
The size of payload IQRF data transmitted between the GW and the IQRF network is limited to 64 B in both directions.
GW-WIFI-01 can work in the following modes:
WiFi Access point
Special service mode intended to WiFi interface configuration.
GW-WIFI-01 works in WiFi access point mode when it is started for the first time after delivering from the factory or after
restoring the factory defaults (by the
Factory defaults
pushbutton or via the web interface). Then, similarly as a WiFi router,
the GW allows to connect a WiFi device. This connection is only intended to configure the GW for subsequent operation, e.g.
selecting the operation mode (datalogger or gateway) and setting other GW parameters (selected WiFi network, passwords
etc.). After the configuration and restart the GW starts to work as a WiFi client and attempts to connect the WiFi network
specified in the configuration.
WiFi client - Datalogger mode
All incoming IQRF data (IQRF RX) is stored and logged in internal Flash memory. When used with IQRF Cloud, the logged
data is transmitted to the Cloud server always after the Cloud period elapsed. See chapters
IQRF IDE
– GW Tool
and
Web
server
.
Data to be sent to IQRF (IQRF TX) is stored in internal Flash memory. When used with IQRF Cloud, the data is stored in the
Cloud server first, transferred to the GW always after the Cloud period elapsed and then forwarded to IQRF network.
If the communication between the GW and the Cloud server failed, the GW indicates an error.
