OpenWRT

Devices

TP-Link Archer C7 v4 / v5

• Device page
• 775 MHz CPU, 16 MiB flash, 128 MiB RAM
• Currently Installed: 23.05.5
• Max Power (2.4/5): 24/30 dBm
• When routing/firewall, max throughput is ~ 135 Mbps until "Software flow offloading" is enabled.
• Can trigger on WPS button with script in /etc/rc.button/wps

HooToo TripMate Nano (HT-TM02)

• Device page
• 360 MHz CPU, 8 MiB flash, 32 MiB RAM
• Currently Installed: 19.07.10
• Initial installation here
• Can remove kernel PPP packages

Mode on Startup

Read status of buttons:

root@wifi-ht:~# cat /sys/kernel/debug/gpio
 gpiochip0: GPIOs 0-21, parent: platform/10000600.gpio, 10000600.gpio:
 gpio-7   (                    |ht-tm02:blue:wlan   ) out lo    
 gpio-10  (                    |reset               ) in  hi    
 gpio-12  (                    |ht-tm02:green:lan   ) out lo    
 gpio-14  (                    |modeswitch          ) in  lo    
root@wifi-ht:~#

For modeswitch, "lo" is Wired, "hi" is WiFi position.

Could also use slide-switch package. Biggest advantage of this is that it triggers at boot time, not just a switch change.

opkg install slide-switch

On startup On mode (button) change, copy files from /etc/config/config-wired or config-wireless to /etc/config with:

• etc/rc.d/S15config-mode -> /etc/config/config-mode

#!/bin/sh
#
# Set mode according to slide switch
#

CONFIG=/etc/config

state=$(grep modeswitch /sys/kernel/debug/gpio | sed 's/.*\(lo\|hi\).*/\1/')
case "$state" in
        lo)
                mode="wired"
                ;;
        hi)
                mode="wireless"
                ;;
        *)
                echo "unknown"
                return 1
                ;;
esac

message="Using config mode: $mode"
echo $message
logger $message

config="$CONFIG/config-$mode"
for file in $(ls $config)
do
        echo $file
        cp "$config/$file" $CONFIG
done

Configuration and Commands

Misc

• Busybox
• UCI Configuration System
• Show logging: logread -f
• wifi up

In /etc/config:

• wireless
• dhcp
• system
• network
• firewall

• OpenWRT setmentation

Disable IPv6 DHCP Server:

• Interface -> IPv6 ->
  • RA-Servce: disabled
  • DHCPv6-Service: disabled
  • NDP-Proxy: disabled

Custom startup scripts:

• /etc/rc.local

In /etc:

• sysupgrade.conf

DHCP

Custom options may be given per network, eg: for NTP:

• 42, 192.168.1.1

DNS

• resolv.conf symlinked to /tmp/resolv.conf which points to local dnsmasq service which delivers from its cache or via DNS servers pointed to by proxies resolv.conf.auto (DHCP client updated)
• See also here

Package Management

opkg update
opkg list
opkg list-installed
opkg install blah
opkg remove blah

Reset

• Controlled by /etc/rc.button/reset
• Quick press of reset button reboots
• Failsafe (long press) forces network to:
  • 192.168.1.1 / 255.255.255.0
  • SSH open with root / no password
  • "firstboot" command to revert to factory defaults
  • Hard factory reset (to 192.168.1.1.): umount /overlay && jffs2reset && reboot now
  • "mount_root" to mount root partition

Wifi commands

iw phy0 info
iw reg get
iw reg set GB

See other iw commands and Reg Database.

USB and File sharing

Add packages:

opkg install kmod-usb-core kmod-usb-storage usbutils block-mount luci-app-minidlna

Show device:

ls /dev/sd*
lsusb -t

Driver USB 1, 2, 3: uhci/ohci, ehci, xhci

Show device:

# block info /dev/sda1
/dev/sda1: UUID="9814-E49A" LABEL="2" VERSION="FAT16" TYPE="vfat"

Mount FAT32 USB stick:

/sbin/block mount
cd /mnt/sda1

See also here

LEDs

• Panel LEDS: LED Config
• GPIO

Buttons

• Panel buttons: Button Config.

procd interface:

root@hootoo:/etc/rc.button# ls
BTN_0     failsafe  power     reset     rfkill
root@hootoo:/etc/rc.button#

scripts need to be named according to the button name, like "BTN_0" or "wps" (see here). They receive values:

• $BUTTON: Name of button
• $ACTION: "pressed", "timeout" or "released". For released, script returns timeout seconds (for hold down).
• $SEEN: number of seconds

root@wifi-ht:/etc/rc.button# cat BTN_0 
#!/bin/sh

logger "Button $BUTTON: $ACTION (Seen $SEEN)"

return 0
root@wifi-ht:/etc/rc.button#

6in4

Requires packages: 6in4 luci-proto-ipv6 and used tunnel from Hurricane Electric.

• Restart network
• In LUCI, edit wan6 and change protocol from DHCPv6 to RFC4213
• Set Remote IPv4 address (eg 74.82.46.6)
• Set Local IPv6 address
• Set IPv6 routed prefix (Routed /48)
• Dynamic tunnel
  • Tunnel ID
  • HE username/password

ping ipv6.google.com

Manual Config:

opkg install 6in4

uci set network.henet=interface
uci set network.henet.proto=6in4
uci set network.henet.peeraddr=[get IPv4 of HE gateway] 
uci set network.henet.ip6addr='[IPv6 from HE]'
uci set network.henet.tunnelid=[HE tunnel ID]
uci set network.henet.username=[HE username]
uci set network.henet.password='[HE password]'
uci commit network

uci set firewall.@zone[1].network='wan henet'
uci commit firewall

ifup henet
/etc/init.d/firewall restart

Regulatory Domains and Channels

iw reg set GB
iw reg get

Regulatory domains defined in:

/lib/firmware/regulatory.db

• Regulatory Database Github

See here for explanation of format.

The following lists taken from:

iw list

2.4 GHz

CA

• 2412 MHz [1] (30.0 dBm)
• 2417 MHz [2] (30.0 dBm)
• 2422 MHz [3] (30.0 dBm)
• 2427 MHz [4] (30.0 dBm)
• 2432 MHz [5] (30.0 dBm)
• 2437 MHz [6] (30.0 dBm)
• 2442 MHz [7] (30.0 dBm)
• 2447 MHz [8] (30.0 dBm)
• 2452 MHz [9] (30.0 dBm)
• 2457 MHz [10] (30.0 dBm)
• 2462 MHz [11] (30.0 dBm)
• 2467 MHz [12] (disabled)
• 2472 MHz [13] (disabled)
• 2484 MHz [14] (disabled)

PA

• 2412 MHz [1] (24.0 dBm)
• 2417 MHz [2] (24.0 dBm)
• 2422 MHz [3] (24.0 dBm)
• 2427 MHz [4] (24.0 dBm)
• 2432 MHz [5] (24.0 dBm)
• 2437 MHz [6] (24.0 dBm)
• 2442 MHz [7] (24.0 dBm)
• 2447 MHz [8] (24.0 dBm)
• 2452 MHz [9] (24.0 dBm)
• 2457 MHz [10] (24.0 dBm)
• 2462 MHz [11] (24.0 dBm)
• 2467 MHz [12] (24.0 dBm)
• 2472 MHz [13] (24.0 dBm)
• 2484 MHz [14] (disabled)

UK

• 2412 MHz [1] (20.0 dBm)
• 2417 MHz [2] (20.0 dBm)
• 2422 MHz [3] (20.0 dBm)
• 2427 MHz [4] (20.0 dBm)
• 2432 MHz [5] (20.0 dBm)
• 2437 MHz [6] (20.0 dBm)
• 2442 MHz [7] (20.0 dBm)
• 2447 MHz [8] (20.0 dBm)
• 2452 MHz [9] (20.0 dBm)
• 2457 MHz [10] (20.0 dBm)
• 2462 MHz [11] (20.0 dBm)
• 2467 MHz [12] (20.0 dBm)
• 2472 MHz [13] (20.0 dBm)
• 2484 MHz [14] (disabled)

5 GHz

IN

• 5180 MHz [36] (30.0 dBm)
• 5200 MHz [40] (30.0 dBm)
• 5220 MHz [44] (30.0 dBm)
• 5240 MHz [48] (30.0 dBm)
• 5260 MHz [52] (24.0 dBm)
• 5280 MHz [56] (24.0 dBm)
• 5300 MHz [60] (24.0 dBm)
• 5320 MHz [64] (24.0 dBm)
• 5500 MHz [100] (24.0 dBm)
• 5520 MHz [104] (24.0 dBm)
• 5540 MHz [108] (24.0 dBm)
• 5560 MHz [112] (24.0 dBm)
• 5580 MHz [116] (24.0 dBm)
• 5600 MHz [120] (24.0 dBm)
• 5620 MHz [124] (24.0 dBm)
• 5640 MHz [128] (24.0 dBm)
• 5660 MHz [132] (24.0 dBm)
• 5680 MHz [136] (24.0 dBm)
• 5700 MHz [140] (24.0 dBm)
• 5720 MHz [144] (24.0 dBm)
• 5745 MHz [149] (30.0 dBm)
• 5765 MHz [153] (30.0 dBm)
• 5785 MHz [157] (30.0 dBm)
• 5805 MHz [161] (30.0 dBm)
• 5825 MHz [165] (30.0 dBm)
• 5845 MHz [169] (30.0 dBm)
• 5865 MHz [173] (30.0 dBm)

PA

• 5180 MHz [36] (30.0 dBm)
• 5200 MHz [40] (30.0 dBm)
• 5220 MHz [44] (30.0 dBm)
• 5240 MHz [48] (30.0 dBm)
• 5260 MHz [52] (30.0 dBm)
• 5280 MHz [56] (30.0 dBm)
• 5300 MHz [60] (30.0 dBm)
• 5320 MHz [64] (30.0 dBm)
• 5500 MHz [100] (30.0 dBm)
• 5520 MHz [104] (30.0 dBm)
• 5540 MHz [108] (30.0 dBm)
• 5560 MHz [112] (30.0 dBm)
• 5580 MHz [116] (30.0 dBm)
• 5600 MHz [120] (30.0 dBm)
• 5620 MHz [124] (30.0 dBm)
• 5640 MHz [128] (30.0 dBm)
• 5660 MHz [132] (30.0 dBm)
• 5680 MHz [136] (30.0 dBm)
• 5700 MHz [140] (30.0 dBm)
• 5720 MHz [144] (30.0 dBm)
• 5745 MHz [149] (30.0 dBm)
• 5765 MHz [153] (30.0 dBm)
• 5785 MHz [157] (30.0 dBm)
• 5805 MHz [161] (30.0 dBm)
• 5825 MHz [165] (30.0 dBm)
• 5845 MHz [169] (disabled)
• 5865 MHz [173] (disabled)

UK

• 5180 MHz [36] (23.0 dBm)
• 5200 MHz [40] (23.0 dBm)
• 5220 MHz [44] (23.0 dBm)
• 5240 MHz [48] (23.0 dBm)
• 5260 MHz [52] (20.0 dBm) (radar detection)
• 5280 MHz [56] (20.0 dBm) (radar detection)
• 5300 MHz [60] (20.0 dBm) (radar detection)
• 5320 MHz [64] (20.0 dBm) (radar detection)
• 5500 MHz [100] (26.0 dBm) (radar detection)
• 5520 MHz [104] (26.0 dBm) (radar detection)
• 5540 MHz [108] (26.0 dBm) (radar detection)
• 5560 MHz [112] (26.0 dBm) (radar detection)
• 5580 MHz [116] (26.0 dBm) (radar detection)
• 5600 MHz [120] (26.0 dBm) (radar detection)
• 5620 MHz [124] (26.0 dBm) (radar detection)
• 5640 MHz [128] (26.0 dBm) (radar detection)
• 5660 MHz [132] (26.0 dBm) (radar detection)
• 5680 MHz [136] (26.0 dBm) (radar detection)
• 5700 MHz [140] (26.0 dBm) (radar detection)
• 5720 MHz [144] (26.0 dBm) (radar detection)
• 5745 MHz [149] (20.0 dBm) (radar detection)
• 5765 MHz [153] (20.0 dBm) (radar detection)
• 5785 MHz [157] (20.0 dBm) (radar detection)
• 5805 MHz [161] (20.0 dBm) (radar detection)
• 5825 MHz [165] (20.0 dBm) (radar detection)
• 5845 MHz [169] (20.0 dBm) (radar detection)
• 5865 MHz [173] (20.0 dBm) (radar detection)