Configuring WL18xx Wifi in MIMO mode.

Pankil Shah

Other Parts Discussed in Thread: WL1837MOD

Hi,

I am using wl18xx chip. And need to configure for using it in MIMO mode only for 2.4 GHz (as MIMO will not work for 5Ghz).

I configure my device using the instruction and used .INI file "WL1837MOD_INI_FCC_CE" from the link http://processors.wiki.ti.com/index.php/.INI/wlconf_Overview.

For that in script "configure-device.sh", I have change the INI file name to WL1837MOD_INI_FCC_CE.ini and used that one only.

Also, in that configuration details I have disabled SISO40 option.

For setting up MIMO mode, I fired command "./wlconf -i /lib/firmware/ti-connectivity/wl18xx-conf.bin -o /lib/firmware/ti-connectivity/wl18xx-conf.bin -s wl18xx.ht.mode=0x00".

So it will make it to set MIMO mode or I need to do something more to configure it.

And one more question after setting up MIMO mode, will 5GHz work in SISO without any effect?

Thanks.

over 10 years ago

0 Joseph Gigi over 10 years ago

TI__Guru* 85400 points

Hi,

To set MIMO:

./wlconf -i /lib/firmware/ti-connectivity/wl18xx-conf.bin -s wl18xx.ht.mode=0x0 -o /lib/firmware/ti-connectivity/wl18xx-conf.bin
./wlconf -i /lib/firmware/ti-connectivity/wl18xx-conf.bin -s wl18xx.phy.number_of_assembled_ant2_4=0x02 -o /lib/firmware/ti-connectivity/wl18xx-conf.bin

Regards,
Gigi Joseph.

0 Pankil Shah over 10 years ago in reply to Joseph Gigi

Expert 1040 points

Hi Joseph,

Thanks for your quick response.

To set MIMO mode, need to fire this set of commands every time after booting.

Can we make firmware that work in MIMO mode only?

And second question, in this MIMO mode 5GHz will work in SISO20 or SISO40?

Thanks.

0 Joseph Gigi over 10 years ago in reply to Pankil Shah

TI__Guru* 85400 points

Hi,

It will be SISO40.

Regards,
Gigi Joseph.

0 Pankil Shah over 10 years ago in reply to Joseph Gigi

Expert 1040 points

Thanks Joseph...
Can we make firmware that work in MIMO mode in spite of firing command at run time to configure MIMO.

0 Joseph Gigi over 10 years ago in reply to Pankil Shah

TI__Guru* 85400 points

I think you can try modifying it in: "drivers\net\wireless\ti\wl18xx\main.c"
You cannot modify the firmware.

Regards,
Gigi Joseph.

0 Joseph Gigi over 10 years ago in reply to Joseph Gigi

TI__Guru* 85400 points

Hi,

I may have misread your question... Once you have generated the wl18xx-conf.bin file with the required parameters, why do you need to change it every time?

Regards,
Gigi Joseph.

0 Pankil Shah over 10 years ago in reply to Joseph Gigi

Expert 1040 points

According to script for firmware making (git.ti.com/.../configure-device.sh), there is no option to set MIMO mode. But after referring script found that script finally firing same type of commands as your shown above. Previously thought script is making firmware with other processing also.

0 Joseph Gigi over 10 years ago in reply to Pankil Shah

TI__Guru* 85400 points

Hi,

Please let me know if this can be closed.

Regards,
Gigi Joseph.

0 Pankil Shah over 10 years ago in reply to Joseph Gigi

Expert 1040 points

One last query is : By any method or command can we see that which mode is configured currently?

0 Joseph Gigi over 10 years ago in reply to Pankil Shah

TI__Guru* 85400 points

Hi,

You can use the "--get" option with wlconf.
Please see: processors.wiki.ti.com/.../WiLink8_wlconf_maunal.pdf for more details.

Regards,
Gigi Joseph.

0 Pankil Shah over 10 years ago in reply to Joseph Gigi

Expert 1040 points

Thanks Joseph for your help...

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Configuring WL18xx Wifi in MIMO mode.