ESP32 ESP-IDF Code to Get and Set Custom MAC Address There are several folders inside our project folder. This opens the project that we created inside the EXPLORER tab. To open the project in a new window, click ‘Yes.’ You will get a notification that the project has been created. Click ‘Choose Template’ button to proceed forward. We have named our project ‘esp32_mac_address.’ For the ESP-IDF board, we have chosen the custom board option. Type ESP-IDF: New Project in the search bar and press enter. Open your VS Code and head over to View > Command Palette. In this section, let’s create an ESP-IDF project to get and set MAC address. Create ESP32 ESP-IDF Project to Set and Get MAC Address However, it is important to note that after each reboot of the ESP32, the MAC address will revert back to its original value and you will need to include a code to set the custom address every time the ESP32 is reset. A MAC address is usually represented as a string of 12 hexadecimal characters separated by colons, for example: 00:11:22:33:44:55.Īlthough MAC addresses are assigned by manufacturers to devices, we can change them to a custom value. A MAC address is typically assigned by the manufacturer of a device and is stored in the card’s read-only memory (ROM). This use is common in most IEEE 802 networking technologies, including Ethernet, Wi-Fi, and Bluetooth. MAC Address IntroductionĪ MAC address is a unique identifier assigned to each device for use as a network address in communications within a network segment. We will begin by learning how to retrieve the default MAC address and then proceed to change it to a custom value. Setting the custom MAC address of ESP32 becomes very useful in many applications such as enhancing privacy, improving network compatibility, and avoiding address conflicts. In this tutorial, we explored two main methods you can use to find the mac address of your network interface in a Linux system.In this tutorial, we will learn how to get and set a custom MAC address of ESP32 using ESP-IDF framework. Locate the network interface you are interested in, which will be displayed as a numbered list Conclusion Link/ether 00:0c:29:9d:72:70 brd ff:ff:ff:ff:ff:ffģ: docker0: mtu 1500 qdisc noqueue state DOWN mode DEFAULT group default The command will return an output as shown: 1: lo: mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000 The second and more modern method of finding the mac address of a given interface is using the ip command. For example, the MAC addresses from the above output are: ens33 -> 00:0c:29:9d:72:70 The MAC address will be listed next to it, consisting of six pairs of hexadecimal numbers separated by colons. Advertisementsįor wireless devices, locate the interface following the format of wlan0 or similar format. Look for the network interface whose MAC address you want to find.įor example, to find mac address of the ethernet interface, locate the eth0 or ens33 or any device in that format. TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 The command should return an output as shown below: docker0: flags=40 To find the MAC address using ifconfig, you can run the command: Advertisements ifconfig The ifconfig command is a traditional tool for managing network interfaces in Linux systems. MAC addresses plays a crucial role in networking as it allows a device to be identified by other devices in the network. Media Access Control, commonly known as the MAC address is a unique identifier assigned to network interfaces.
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