On 2021-08-30, Cord <openbsdml@protonmail.com> wrote:
> Hello,
> did anyone try to use the 4g modem sim7600 that should work with umb driver ?
> The toy is the following:
> https://usa.banggood.com/Waveshare-SIM7600G-H-4G-DONGLE-Module-Single-Antenna-Digital-Transmission-Industrial-Grade-4G-Communication-And-GNSS-Positioning-Peripheral-Global-Universal-p-1813354.html
> Is it working ?
> And where can I see the signal strength ?
>
> Thank you
> Cord.
>
>
It looks like it is probably a Qualcomm-based device. It seems likely
that as things are now, it will attach to umsm. I can't say for sure if
it will work or not though I think there is a *fairly* good chance.
But unless you are lucky and somebody already used the same device,
you will need to buy one to find out for sure.
If it does work, while attached to umsm there should be several com
interfaces presented, one of which is likely to accept AT commands
so you can find strength that way. For umsm, you will need to mess
about with pppd to get it to connect to the internet.
The device would probably support working with umb(4) but would need
some extra work (maybe as simple as moving the vendor/product ID to umb(4),
but it may need more...so far I have a success rate of about 33% with umb
devices, including some devices which are even listed in the manpage -
the firmware on the device matters too, not just the chipset).
There is no support for displaying signal strength directly via umb,
and the other com ports are only available via umsm, so in that case you
can't send AT commands to find it either..
This device is cat4 only (no MIMO, no channel aggregation) so speed won't
be amazing.
--
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