31 Aug
2018
31 Aug
'18
11:19 p.m.
On 06/10/2018 06:27 AM, Daniel Golle wrote:
On Sat, Jun 09, 2018 at 10:15:22PM +0000,
modante(a)disroot.org wrote:
Despite the incompatibility of the 5GHz radio of the Archer C20v4, I
want to put LibreMesh on it anyways, since it's easier for me to use it
than to sell it. My challenge now: how can I cook a LibreMesh 17.06
image for it? Using lime-sdk in Docker, I can't figure out how to cook
LiMe 17.06. This command:
sudo docker run -v "$(pwd)":/app cooker -c ramips/mt7628
--profile=tplink_c20-v4 --flavor=lime_default
cooks lime 17.01. How can I make it cook 17.06?
I notice in https://downloads.lede-project.org/releases/ that there are
only 17.01 and 18.06 present, and 17.06 is not there.
I use a TL-WR841ND in our mesh network that has 4
MB too without issue, but using the "mini" flavor. You don't have access to
the administration in LuCi but you can configure them by SSH.
Regards :-)
4MB flash devices with MT76x8 are not as easy to support as the
situation on ar71xx/tiny which has been optmizied to fit on those
small chips.
However, as long as you don't need either crypto nor web-ui it should
still be ok. The WiFi support for the MT76x8 WiSoCs is constantly
improving, it's not as good ath9k yet, but getting there bit by bit.
Regarding the C20, there is literally 0 hope for the 5GHz chip
(MT7610E). Unless something miraculous happends, which is highly
unlikely. The chip just sucks, the driver is crap and no FOSS
driver is suitable to support it. 2.4GHz should work fine, but
it's kind of a waste to run OpenWrt on those boxes...
There have been several attempts of porting the crap-driver to OpenWrt,
if you go through all the pain to build it (and it's vendor-specific
user-land hostapd-replacement) it may be good enough to provide a
single AP interface on 5GHz (but no mesh, no client, no interface-
combinations, no bandwidth prediction, no ad-hoc, ...)
Running LibreMesh with the crappy vendor driver would also be quite
some effort even if that interface is only a plain AP...
9 de junio de 2018 18:59, "Patricio Gibbs" <patricio(a)altermundi.net>
escribió:
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On Monday night through Wednesday we have a
training that includes
setting up a 400 meter link (near Puyo, Ecuador, UTC-5).
We have purchased a TP-Link Archer C20 v4. We plan to connect it via
Nanostation2 and NanoLoco2 with a WR840Nv5(ES) that belongs to a small
ISP (why this arrangement? combo of cheapest new and used hardware that
I thought would work). The 840N only has 4MB RAM, which I understand is
not really recommended for LibreMesh.
Neither of the routers are on the list of devices at
http://chef.libremesh.org for LibreMesh, but they are on the list for
OpenWrt. The most similar device by name on the LibreMesh list is the
Archer C20i.
If we can LibreMesh-ify the ISPs 840N router in a way that it can easily
be returned to factory firmware, maybe we will do that.
If we can LibreMesh-ify the Archer C20 without a high probability of
bricking it, we will do that (we don't have money in the budget for a
replacement this week).
I can use lime-sdk cooker instead of Chef -- I have done this before to
test a new translation file.
Suggestions on how to proceed?
Here's the C20v4 data:
https://openwrt.org/toh/hwdata/tp-link/tp-link_archer_c20_ac750_v4
Supported Current Rel: snapshot
Unsupported Functions: WiFi 5GHz
Target: ramips
Subtarget: mt76x8
Package architecture: mipsel_24kc
Bootloader: U-Boot
CPU: MediaTek MT7628AN
8 MB flash, 64 MB RAM
Compare to C20i:
https://openwrt.org/toh/hwdata/tp-link/tp-link_archer_c20i_ac750_v1
Supported Current Rel: 17.01.4
Unsupported Functions: WiFi 5GHz
Target: ramips
Subtarget: mt7620
Package architecture: mipsel_24kc
Bootloader: U-Boot
CPU: MediaTek MT7620A
8 MB flash, 64 MB RAM
TL-WR840N v5 (ES) -- belongs to the ISP
https://wikidevi.com/wiki/TP-LINK_TL-WR840N_v5
CPU1: MediaTek MT7628N (575 MHz)
FLA1: 4 MiB (GigaDevice GD25Q32B)
RAM1: 64 MiB (ESMT M14D5121632A)
~ Pato
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