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WIFI OMAP3530 Android Packet Loss Issue

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Posted by Midson

on Mar 03 2011 20:15 PM

Hi I have build and loaded the Wifi drivers on to OMAP 3530 Android target platform as per the link below: http://processors.wiki.ti.com/index.php/Android_wireless_build_and_porting_guide I am able to connect to networks but the issue is 70-80% packet loss. Is that I am missing anything, any hints ? I even have done Wifi TX BIP calibration and loaded NVS file. I will be thankful for your valuable inputs, as how to make WIFI work without packet loss. Thanks Midson

Thanks

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Posted by Vishveshwar Bhat

on Mar 03 2011 22:29 PM

Genius9590 points

WiiFi support is newly added to TI Android DevKit. Extensive performance analysis is not yet done.

Do you see packet loss only with android or in linux too?

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Posted by Midson

on Mar 03 2011 23:01 PM

Intellectual835 points

We are seeing the packet losses (80%) in Android and we have not tried in Linux. 80% is almost equal to not working state. Is it something to do with calibration? We tried to calibrating on different channel. But no improvement.

Thanks

Posted by Vishveshwar Bhat

on Mar 03 2011 23:57 PM

Genius9590 points

I suggest that you try this with linux too. This would help isolate if this is a driver issue or android issue.

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Posted by Midson

on Mar 06 2011 21:17 PM

Intellectual835 points

Unfortunately, the Linux image is not with me. Is it something to do with SDIO settings? Because now, I am not loading the SDIO driver.

Thanks

Posted by Vishveshwar Bhat

on Mar 06 2011 22:59 PM

Genius9590 points

We found that having a combined SDIO and wifi driver resulted in a better system stability in android on our evm. But as mentioned previously, we have not yet done any extensive testing.

We would recommend that you first verify wifi operation and performance on linux before moving to android.

Sample linux filesystem is available with the Linux PSP package. You can use that as your starting point.

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Posted by Midson

on Mar 07 2011 01:51 AM

Intellectual835 points

Just to understand the problem better, Can you throw some light on relation between SDIO and WiFi?

Now I modified the following:
1. Loaded new F/W (349) and Driver (149).
2. Set the following param in tiwlan.ini
    dot11PowerMode = 1, defaultPowerLevel = 1, PowerSavePowerLevel = 1

and tried. But no improvement. Do you want me to do any other specific test? I will try with Linux Image and update.

Thanks

Posted by Vishveshwar Bhat

on Mar 07 2011 02:11 AM

Genius9590 points

For wifi-specific queries please use the WLAN Applications E2E forum http://e2e.ti.com/support/low_power_rf/f/307.aspx

We can only help with android integration.

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