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69 lines
3.0 KiB
Markdown
69 lines
3.0 KiB
Markdown
<!--
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Author: Xianjun jiao
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SPDX-FileCopyrightText: 2019 UGent
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SPDX-License-Identifier: AGPL-3.0-or-later
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-->
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**NOTE** the terminal session mentioned in the following text can also be setup via USB-UART instead of Ethernet.
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**NOTE** adrv9361z7035 has ultra low TX power in 5GHz. Move **CLOSER** when you use that board in 5GHz!!!
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- Power on two SDR boards. Call one board "AP board" and the other "client board". On each board, the TX and RX antenna should vertical/orthogonal to each other as much as possible to gain a good TX/RX isolation.
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- Connect a computer to the AP board via Ethernet cable. The computer should have static IP 192.168.10.1. Open a terminal on the computer, and then in the terminal:
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```
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ssh root@192.168.10.122
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(password: openwifi)
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cd openwifi
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./fosdem.sh
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(It will create a WiFi AP by hostapd program with config file: hostapd-openwifi.conf)
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(Wait for the script completed)
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cat /proc/interrupts
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(Execute the "cat ..." command for several times)
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(You should see the number of "sdr,tx_itrpt1" grows, because it sends the "openwifi" beacon periodically)
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```
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- Connect another computer to the client board via Ethernet cable. The computer should have static IP 192.168.10.1. Open a terminal on the computer, and then in the terminal:
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```
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ssh root@192.168.10.122
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(password: openwifi)
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service network-manager stop
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cd openwifi
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./wgd.sh
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(Wait for the script completed)
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ifconfig sdr0 up
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iwlist sdr0 scan
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(The "openwifi" AP should be listed in the scanning results)
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wpa_supplicant -i sdr0 -c wpa-openwifi.conf
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("iwconfig sdr0 essid openwifi" could also work. Less info compared to wpa_supplicant)
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```
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If wpa-openwifi.conf is not on board, please create it with [this content](../../user_space/wpa-openwifi.conf).
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- Now the client is trying to associate with the AP. You should see like:
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```
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root@analog:~/openwifi# wpa_supplicant -i sdr0 -c wpa-openwifi.conf
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Successfully initialized wpa_supplicant
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sdr0: CTRL-EVENT-SCAN-STARTED
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sdr0: SME: Trying to authenticate with 66:55:44:33:22:8c (SSID='openwifi' freq=5220 MHz)
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sdr0: Trying to associate with 66:55:44:33:22:8c (SSID='openwifi' freq=5220 MHz)
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sdr0: Associated with 66:55:44:33:22:8c
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sdr0: CTRL-EVENT-CONNECTED - Connection to 66:55:44:33:22:8c completed [id=0 id_str=]
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```
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The AP board terminal should print like:
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```
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...
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sdr0: STA 66:55:44:33:22:4c IEEE 802.11: authenticated
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sdr0: STA 66:55:44:33:22:4c IEEE 802.11: associated (aid 1)
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sdr0: AP-STA-CONNECTED 66:55:44:33:22:4c
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sdr0: STA 66:55:44:33:22:4c RADIUS: starting accounting session 613E16DE-00000000
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```
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If not, please adjust antenna/distance and re-run the commands on the client side.
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- After association is done, in another terminal of client (**DO NOT** terminate wpa_supplicant in the original client terminal!):
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```
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dhclient sdr0
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(Wait for it completed)
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ifconfig sdr0
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(Now you should see the IP address like 192.168.13.x allocated by AP)
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ping 192.168.13.1
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(Ping the AP)
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```
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Now the communication link should be already setup between the AP and the client.
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