2021-03-15 03:07:46 +01:00
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Overview
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================================================================
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This is a NuttX port of the ESP-IDF iperf example. [1]
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It doesn't support all features in standard iperf.
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It's supposed to be compatible with iperf version 2.x. [2]
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[1] https://github.com/espressif/esp-idf/tree/master/examples/wifi/iperf
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[2] https://sourceforge.net/projects/iperf2/
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2020-12-04 09:16:12 +01:00
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Configuring NuttX to use your Wireless Router (aka Access Point)
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================================================================
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Since you are already in the root of NuttX/ repository, execute
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make menuconfig to define your Wireless Router and your password:
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$ make menuconfig
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Browser the menus this way:
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Application Configuration --->
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Network Utilities --->
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Networking Configuration --->
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WAPI Configuration --->
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(myApSSID) SSID
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(mySSIDpassphrase) Passprhase
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Replace the SSID from myApSSID with your wireless router name and
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the Passprhase with your WiFi password.
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Exit and save your configuration.
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iperf Test Example
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===================================
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To set up, do `make menuconfig` and select the Apps > netutils > iperf example. By default, NuttX will the be the client
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which sends data; and the host computer (Linux, macOS, or Windows) will be the server.
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Set up networking so the NuttX computer can ping the host, and the host can ping NuttX. Now you are ready to run the
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test.
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If you are using a wireless network card, you must first connect to the router:
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On host:
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$ iperf -s -p 5471 -i 1 -w 416K
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------------------------------------------------------------
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Server listening on TCP port 5471
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TCP window size: 416 KByte
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------------------------------------------------------------
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On NuttX:
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nsh> iperf -c 192.168.1.181 -p 5471 -i 1 -t 10
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mode=tcp-client sip=192.168.1.198:5001, dip=192.168.1.181:5471, interval=1, time=10
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Interval Bandwidth
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0- 1 sec, 0.39 Mbits/sec
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1- 2 sec, 0.26 Mbits/sec
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2- 3 sec, 0.39 Mbits/sec
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3- 4 sec, 0.26 Mbits/sec
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4- 5 sec, 0.26 Mbits/sec
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5- 6 sec, 0.26 Mbits/sec
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6- 7 sec, 0.26 Mbits/sec
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7- 8 sec, 0.26 Mbits/sec
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8- 9 sec, 0.26 Mbits/sec
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9- 10 sec, 0.26 Mbits/sec
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0- 10 sec, 0.28 Mbits/sec
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Now on the host you should see something like:
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$ iperf -s -p 5471 -i 1 -w 416K
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------------------------------------------------------------
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Server listening on TCP port 5471
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TCP window size: 416 KByte
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------------------------------------------------------------
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[ 5] local 192.168.1.181 port 5471 connected with 192.168.1.198 port 4210
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[ 5] 0.0- 1.0 sec 60.8 KBytes 498 Kbits/sec
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[ 5] 1.0- 2.0 sec 34.9 KBytes 286 Kbits/sec
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[ 5] 2.0- 3.0 sec 33.7 KBytes 276 Kbits/sec
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[ 5] 3.0- 4.0 sec 33.4 KBytes 274 Kbits/sec
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[ 5] 4.0- 5.0 sec 32.0 KBytes 262 Kbits/sec
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[ 5] 5.0- 6.0 sec 32.0 KBytes 262 Kbits/sec
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[ 5] 6.0- 7.0 sec 33.4 KBytes 274 Kbits/sec
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[ 5] 7.0- 8.0 sec 32.0 KBytes 262 Kbits/sec
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[ 5] 8.0- 9.0 sec 32.0 KBytes 262 Kbits/sec
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[ 5] 9.0-10.0 sec 33.4 KBytes 274 Kbits/sec
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[ 5] 0.0-10.3 sec 368 KBytes 292 Kbits/sec
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This will tell you the link speed in Kbits/sec – kilobits per second. If you want kilobytes, divide by 8.
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