USR-WIFI232-A/B/C User Manual
http://www.usriot.com
Jinan USR IOT Technology Limited
Page 35 of 93
4.5.3
Search Function for STA
When using web configuration STA Interface Setting Page, user can push “Search” button to find
surrounding AP, and find a AP to associated.
Figure 29
Search
Search
Search
Search page
page
page
page
4.5.4
Address Binding
USR-WIFI232-A/B/C module supports the feature of binding the BSSID address of target network.
According to the provisions of 802.11 protocol, different wireless networks can have a same
network name (i.e. SSID / ESSID), but must correspond to a unique BSSID address (i.e. MAC
address). Illegal intruders can create a wireless network with the same SSID / ESSID, it will make
STAs in the network to join to the illegal AP, thereby and then network leakage happen.
Users can prevent STA from joining to illegal network by binding the BSSID address, to improve
wireless network security.
4.6
4.6
4.6
4.6 UART
UART
UART
UART Frame
Frame
Frame
Frame Scheme
Scheme
Scheme
Scheme
4.6.1
UART Free-Frame
USR-WIFI232-A/B/C support UART free-frame function. If user select open this function, module
will check the intervals between any two bytes when receiving UART data. If this interval time
exceeds defined value (50ms default), USR-WIFI232-A/B/C will think it as the end of one frame
and transfer this free-frame to WiFi port, or USR-WIFI232-A/B/C will receive UART data until 4K
bytes, then transfer 4KB frame to WiFi port.
USR-WIFI232-A/B/C’s default interval time is 50ms. User can also set this interval to fast (10ms)
through AT command. But user have to consider if user MCU can send UART data with 10ms
interval ,or the UART data may be divide as fragment.