Wi-Fi Bluetooth for Linux Forum Discussions

Hi Sir,

Hi Sir,

我用的平台是IMX6 ,LINUX环境，DHD driver，CYW43438运行在STA 模式。

目前考虑到功耗问题，想要通过调节DTIM的值，改变监听的间隔，从而达到省电的目的，但是在DHD driver里面改了一些参数，没有起到作用，也尝试通过wl dtim命令设置，发现在连接AP之后，DTIM会自动改变，应该是AP侧的DTIM值。

所以，想咨询下CYW43438在STA模式下，是否可以通过驱动修改DTIM值，如何修改呢？谢谢~

BR,

Leo

Hi,

We have a number of customers using Meraki routers that our product containing a 1DX cannot connect to unless they turn 20/40MHz coexistence off. We experience the same issue with our Netgear having to turn 20/40MHz coexistence off. I have carefully searched though the BCM43430 / 1DX documentation and cannot see any mention of 20/40MHz capability.

So does the 1DX (  currently using v5.4.18-2020_0402 firmware -  and latest Linux kernel supported by murata GitHub - murata-wireless/meta-murata-wireless  (branch imx-sumo-manda). ) have this capability?

If not, is there any work-around, setting etc that could be used to connect to these routers so customers don't have to sacrifice bandwidth for one product?

If is does, what could be causing a failure to connect?

Thanks.   

Hello,

We are experiencing a very similar issue to the unanswered ticket below:

Problem With Disconnecting 1DX when signal stregths is weak

Build is the latest Linux kernel supported by murata GitHub - murata-wireless/meta-murata-wireless  (branch imx-sumo-manda). The board is a custom board based of the imx7dsabresd SDK with 1DX module ( Linux version 4.14.98 ).

We've updated to the latest FMAC version: v5.4.18-2020_0402 as proposed by the above ticket.

All wpa_supplicant family of tools are version 2.9

There are no issues connecting to an AP, but in a mesh system with all APs having the same SSID and passphrase we also get the brcmfmac "warn_slowpath_null" dmesg message unwind. Monitoring the signal strength and the "connected to AP MAC" of the APs within the mesh, the wpa_supplicant setting bgscan="simple:30:-50:300"  has no effect. Between two AP's monitoring which one we're connect to the connection does not jump when the non-connected AP get stronger than -50. The change is only when the current connection goes out of range.

These maybe two separate issues - warn_slowpath, not disconnecting at -50 but there is certainly a relationship.

Exactly the same issues are seen on the earlier murata krogoth branch ( 4.9.88 ) using the very latest backport FMAC driver. The branch is still used in current production units so just as important.

Thanks.

hi

we need the driver for 89459 and compiler in linux4.14.98

can v5.4.18-backports support it?

james

Hi,

I would like to investigate if the CYW4343W supports simultaneous connections as a slave (peripheral) to external masters (centrals).

Could anyone tell me if this can be achieved by the CYW4343W? And more specifically, through the Linux driver?

Many thanks,

Neil

When check WIFI regulatory power limit setting by "wl curpower",  I observed that 20in80, 40in80 and 80MHz regulatory limit of 802.11ac 80MHz at low and middle 5GHz band are not the same,  20in80 and 40in80 are using the regulatory limit for 20MHz and 40MHz bandwidth respectively.    On the contrary, 20in40 and 40MHz regulatory limit of 802.11ac 40MHz and 802.11n 40MHz are the same.

I want to know what is the limit setting of "20in80, 40in80" for?  Regulatory power limit of 80MHz is not the limit of each 20MHz "sub-channel"?

Thanks!

Is there a backport of the 4.14 driver to apply to 4.1.15? And while I'm at it, anyone have a link to a CYW4373 datasheet?

Hi,

I understand Cypress has a proprietary bluetooth stack for linux called BSA. Is this supported for the 43455 chipset ?

If yes, whom can I contact to get more info on this stack?

Thanks and regards,

Aparna