GW-WIFI-01
User_Guide_GW -WIFI-01_180511
Page 5
WiFi
2.4 GHz UHF band is used.
USB
USB interface enables an interconnection between the GW and a PC with IQRF IDE development software. It is intended for
uploading the application code into internal TR transceiver, debugging the application and GW configuration using the
GW
Tool
(a SW component of IQRF IDE for managing IQRF gateways).
Pushbuttons
Both Reset and Control pushbutton functionality is fixed and can not be changed in application program.
Control
Short press (< 1 s):
No effect
Long press (1 s to 10 s):
GW off
Long press (> 10 s):
Restore the factory settings of the gateway. (After 10 s all LEDs get off to indicate that the
factory setting was restored.)
Reset
Reset button can be pressed by a pin through the hole in the case. It is intended to reset the gateway (equally to switching
the GW off and on). Current GW configuration stays unchanged. For reinitializing the GW (to restore the factory settings),
use menu
Maintenance › Factory Defaults
at Web server or user pushbutton.
LEDs
See
Appendix 1
– LED indication
.
RF
(DC)TR-72DA or DCTR-52DA wireless transceiver module is used for IQRF connectivity. Antenna is built in TR module.
EEPROM
Internal serial EEPROM is intended to store the data for GW configuration. It is not available for user application SW.
Flash memory
Log data is stored in circular buffer in Flash memory. When it is full and a subsequent write is performed, then it starts
overwriting the oldest data.
There is 252 KB dedicated to IQRF RX data and 128 KB for IQRF TX data and same size for System log.
The number of records of IQRF RX/TX data depends on the parameter
Packet size
, which define how many payload data
bytes is dedicated for every data record. For default setting (
Packet size = 64 B
) there is 3308 positions for IQRF RX
and 1680 positions for IQRF TX. For System log there is always 6553 positions in the buffer.
The actual size of the data log is the
Packet size + 14 B
, where the additional 14 bytes are used for saving date, time
and index of the log. In this way the user can calculate actual number of positions in the buffer.
Data volumes and recording frequency must be taken in account with respect to the Flash memory endurance.
When the
Packet size
is changed in the GW settings, all logs are cleared.
Case
Caution:
It is not allowed to open the GW case otherwise the device may be damaged.