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OMAP35x_Wireless_Connectivity_Demo - Web Browsing via WLAN

daniel tran
Prodigy 110 points
Other Parts Discussed in Thread: WL1271

 

Hi Sinoj,

I have been following the instructions in the link:

http://processors.wiki.ti.com/index.php/OMAP35x_Wireless_Connectivity_Demo#Start_WLAN_menu

 

Until now I have successfully completed the sections:

Connect to non secured WLAN network

WLAN PING test

WLAN Throughput test

 

I am now got stuck at the last section and asking you for help:

Web Browsing via WLAN

 

I have the router up and run and verify that  a PC with a  WLAN card can wirelessly connect to this network and get into the google website

 

1. Ifconfig tiwlan0 192.168.1.70  netmask 255.255.255.0 up

2. ifconfig eth0 30.20.10.1 up

3. Cofigure labtop’s LAN Ethernet port IP address to: 30.20.10.2

4. Run the Web Browsing script ./WebBrowse.sh start

5. Enter the IP address of the EVM Ethernet port:  30.20.10.1

            The log prints

Sending discover …

Sending select for 192.168.0.194…

Lease of 192.168.0.194 obtained, lease time 86400

Adding DNS 192.168.0.1

6. I added this address to the preferred DNS server in the TCP/IP Properties of the PC

 

7. ping www.google.com

PING www.google.com (74.125.95.105): 56 data bytes

 

Note that the PC got hung up here.

 

 I notice that the ip address of the EVM WLAN has been changed from 192.168.1.70  to 192.168.0.194

 

Could you please help explain why the EVM WLAN IP address change and ping does not work, do I miss anything ?

 

Thank you

Daniel 

 

  • 0
    Expert 2800 points

    Daniel,

    The WLAN interface got the new IP from the DHCP server.

    Since you set EVM Ethernet IP to 30.20.10.1, can you please configure your laptop's Default gateway to 30.20.10.1?

    Thanks,

    Sinoj

     

  • 0 in reply to sinoj issac
    Prodigy 110 points

    Sinoj,

    Yes, I did configure my laptop's default gateway to 30.20.10.1 but still ping www.google.com does not work, it hung until I reset the EVB.

    I have reset the boards and my PC and tried again many few times, but still ping does not work, so I am switching to a different labtop now and will try again.

    In the mean time, if you can think of anything, please let mew know.

    Thank you

    Daniel

  • 0 in reply to daniel tran
    Prodigy 110 points

     

    Hi Sinoj,

    Still ping www.google.com does not work with any new pcs that I have, so I decided to redo all the setups for web browsing, but I skipped the ping test and went straight to open Internet Explorer. To my surprise, I browsed the web fine, got to cnn, google etc.

    I understand that the ping test in the procedure is there for a reason, so there must be a reason why it does not work for me. It would be good to know why it does not work and I can still browse the web .

    I also would like to ask you if you know of any tests that allow me to either control the signal strenth of the router transmitter and/or to measure/monitor the received signal strenght (RSSI) of   the WL1271 while browsing the web using the same OMAP35x EVB environment ? and also if TI provides a chart to show relationship between RSSI value and power level ? I would like to find out how far (range) I can put the WL1271from the router before it can no longer receive the packets with the type of antennas that we would want to use.

    Thank you

    Daniel

  • 0 in reply to daniel tran
    Expert 2800 points

    Hi Daniel,

    In order to figure out the ping issue;

    First of all, we need to ensure that PC gets internet access through EVM-WL1271. 

    Action: While browsing internet on IE, unplug Ethernet cable from EVM Ethernet port and verify whether  IE opens  websites.

    2. Check whether the AP (to which WL1271 is associated with) has internet accessibility.

    Action: Verify this by associating other laptops,etc with the AP and browsing.

    3. Check whether WL1271 is working

    Action: After executing WebBrowse.sh, try ping www.google.com,.etc  at EVM Linux shell, please ensure that tiwlan0 and eth0 are not in same subnetwork.

    If ping does not work i don't think that you can browse internet .

    Also, please check the Ethernet connectivity between EVM and PC by pinging each other.

    Thanks,

    Sinoj