1. Mx6ul core module serial Ethernet test (VII)

The following is already in Iot-6ULX/EVB-6ULX The verification on the platform passed ,Iot-6ULX/EVB-6ULX Introduce the following ：

The development board is equipped with 2 road 10/100Mbps Ethernet interface CN7 and CN13.

• On board IoT-6ULx Core board module , Only interfaces CN7 It works , The corresponding device number in the software is eth0.
• On board CoM-T6UL Core module , Interface CN7 and CN13 Are effective , In software CN13 The corresponding equipment number is eth0,CN7 The corresponding equipment number is eth1.

The test method of Ethernet is the same , The following network tests are on-board IoT-6ULx As an example of network testing . When you get the onboard CoM-T6UL When testing the development board of , The test method is the same .

Be careful ： Network interface CN13 On board only CoM-T6UL Core module is valid .

6.1 Network connectivity test

Use ifconfig Command to display or configure the network .

[email protected] ~# ifconfig                     // View network information

                                                            View network information

You can see from the terminal information , On board IoT-6ULx Core board module , Configured on the software 1 Road network eth0.

In the supporting software , Default on dhcp Daemon , After connecting the network cable, it will automatically obtain IP. stay CN7 Interface connection network cable ：

                                                            Network status information  

You can see from the terminal information , eth0 It's connected . Input instruction , Check whether the network has obtained IP.

[email protected] ~# ifconfig                       // View network information

                                                            Automatic network access IP

You can see from the terminal information ,eth0 Has been able to automatically obtain IP 了 . The next step is through ping Command to test the connectivity of the network . Can pass ping Of the host connected to the development board IP, In this test , Our mainframe IP by 192.168.0.11. During the test, the user will IP Replace it with your own host IP that will do .

Execute the following instructions , In the instruction “-I” Represents the specified network port , No addition “-I” Use the default network card （ The default network card refers to the end with network access , If both ports have network access , Then use eth0 As the default network card ）. Press “Ctrl+c” End ping Instructions .

[email protected] ~# ping 192.168.0.11 -I eth0           // use eth0 ping host 192.168.0.11

                                                                 eth1 Connectivity testing

ping After the test , View terminal information , There is no packet loss , It shows that the network connectivity is good .

6.2 TCP/UDP Bandwidth test

Next, perform bandwidth test , Bandwidth test should use iperf3 Tools .iperf Is a network performance testing tool .iperf Can test the biggest TCP and UDP Bandwidth performance , It has many parameters and UDP characteristic , It can be adjusted as needed , Can report bandwidth 、 Delay jitter and packet loss .

First , Download on the host side iperf3 Tools . Download the website from the official website iPerf - Download iPerf3 and original iPerf pre-compiled binaries Download the version matching the computer system . If the computer already has iperf3 Tools , You can use .

Extract the downloaded file , Enter into iperf3.exe Under the directory , Hold down Shift key , Then right click , choice “ Open here Powershell window ” Options , Open the command line window . As shown in the figure below ：

PC End open Powershell

                                                       Powershell Window interface  

On the host side Powershell The window executes the following instructions , open iperf3 Tools ：

PS E:\iperf-3.1.3-win64> .\iperf3 -s 

                                                                  open iperf3 Tools  

here , The host side acts as a server , Development board as client , You can test the network bandwidth .

Start iperf3 Before testing , To avoid interference , Turn off irrelevant network devices first , Keep only the equipment to be tested . Now let's use eth0 Test bandwidth , Only connected CN7, This operation is unnecessary . If other networks have been loaded in the system , You can shut down the network according to the following instructions ：

[email protected] ~# ifconfig eth0 down                    // close eth0,down Means closing

[email protected] ~# ifconfig eth1 down                    // close eth1,down Means closing

[email protected] ~# ifconfig wlan0 down                 // close wifi The signal wlan0

After shutting down the irrelevant network , Execute the following instructions , test TCP bandwidth , This test host IP by 192.168.0.11：

[email protected] ~# iperf3 -c 192.168.0.11 -t 10 -4    // test TCP bandwidth , Duration 10s,IPv4 standard

During the test , HyperTerminal and Powershell The window will print relevant information , As shown in the figure below ：

                                                            test TCP Bandwidth terminal display  

                                                    test TCP bandwidth Powershell Show  

TCP The default is to test with the maximum bandwidth , In the test, the network connected to the development board is 100m .

Execute the following instructions , test UDP bandwidth , This test host IP by 192.168.0.11：

[email protected] ~# iperf3 -c 192.168.0.11 -u -t 10 -4    // test UDP bandwidth , Duration 10s,IPv4 standard

During the test , HyperTerminal and Powershell The window will print relevant information , As shown in the figure below ：

                                                          test UDP Bandwidth terminal display  

                                                    test UDP bandwidth Powershell Show

UDP Default bandwidth 1Mbit/sec, The closer the test value is to the theoretical value, the better the test result .