VoCore2 U.FL Antenna Only

hyyoon
 
Posts: 2
Joined: Fri Jul 07, 2017 12:47 pm

VoCore2 U.FL Antenna Only

Fri Jul 07, 2017 1:05 pm

Hi all,

I just found that the secondary antenna for wifi on vocore2 is disabled by default. So this is SISO with onboard antenna by default. The link below gives commands to bring the second antenna up to get MIMO working which might require at least 6cm spacing between the two antennas to prevent cross talks.

Is there any command to disable the power of the onboard antenna? I'd like to use the secondary antenna only while turning off the onboard antenna. This way I could hook up with high gained antenna connected to U.FL to get better coverage.

http://vocore.io/v2.html

enable second antenna:

/tmp/factory 0x34 0x22 > /tmp/mtd2.tmp

mtd -e factory write /tmp/mtd2.tmp factory

disable second antenna:

/tmp/factory 0x34 0x11 > /tmp/mtd2.tmp

mtd -e factory write /tmp/mtd2.tmp factory

Vonger
 
Posts: 558
Joined: Sun Oct 19, 2014 6:00 am

Re: VoCore2 U.FL Antenna Only

Sun Jul 09, 2017 2:13 pm

I think there is a way :) but need to check its wifi driver source code, directly control from its driver...no other way.
Actually you can do a lot of things if you modify its driver, such as mutli-ssid etc, I am trying to understand it recently :)

hyyoon
 
Posts: 2
Joined: Fri Jul 07, 2017 12:47 pm

Re: VoCore2 U.FL Antenna Only

Tue Jul 25, 2017 3:12 am

Thanks, I'll look up something from the source code.

nbash
 
Posts: 11
Joined: Mon Apr 10, 2017 1:25 pm

Re: VoCore2 U.FL Antenna Only

Mon Jul 31, 2017 6:57 pm

I too thought about that feature and have found EEPROM Base address in mt7628.pdf http://vonger.cn/misc/vocore2/datasheet.zip:
mt7628.jpg
mt7628.jpg (117.04 KiB) Viewed 270 times


it's a right way?

Vonger
 
Posts: 558
Joined: Sun Oct 19, 2014 6:00 am

Re: VoCore2 U.FL Antenna Only

Fri Aug 11, 2017 12:17 pm

That config is used to enable 1 antenna or 2 antennas, can not control which one to enable.

nbash
 
Posts: 11
Joined: Mon Apr 10, 2017 1:25 pm

Re: VoCore2 U.FL Antenna Only

Fri Aug 11, 2017 2:00 pm

What else I have noticed:

Code: Select all
/tmp/factory 0x34 0x22 > /tmp/mtd2.tmp

mtd -e factory write /tmp/mtd2.tmp factory


Is that operation, works as AUX (RX only) in mini pci-e wireless card from notebook. Not 2T2R. Probably that is specific feature of wifi drivers, but I doubt.

The question remains open.

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