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52 lines
2.0 KiB
Markdown
52 lines
2.0 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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- 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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iwconfig sdr0 essid openwifi
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```
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- Now the client is trying to associate with the AP. The AP board terminal should print like:
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```
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...
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sdr0: AP-STA-CONNECTED 66:55:44:33:22:58
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sdr0: STA 66:55:44:33:22:58 RADIUS: starting accounting session 1FF1C1B4-00000001
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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 the terminal of client:
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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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./set_csma_normal.sh
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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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