1| Supported Targets | ESP32 | ESP32-S2 | ESP32-C3 |
2| ----------------- | ----- | -------- | -------- |
3
4# Ethernet Example
5(See the README.md file in the upper level 'examples' directory for more information about examples.)
6
7## Overview
8
9This example demonstrates basic usage of `Ethernet driver` together with `tcpip_adapter`. The work flow of the example could be as follows:
10
111. Install Ethernet driver
122. Send DHCP requests and wait for a DHCP lease
133. If get IP address successfully, then you will be able to ping the device
14
15If you have a new Ethernet application to go (for example, connect to IoT cloud via Ethernet), try this as a basic template, then add your own code.
16
17## How to use example
18
19### Hardware Required
20
21To run this example, it's recommended that you have an official ESP32 Ethernet development board - [ESP32-Ethernet-Kit](https://docs.espressif.com/projects/esp-idf/en/latest/hw-reference/get-started-ethernet-kit.html). This example should also work for 3rd party ESP32 board as long as it's integrated with a supported Ethernet PHY chip. Up until now, ESP-IDF supports up to four Ethernet PHY: `LAN8720`, `IP101`, `DP83848` and `RTL8201`, additional PHY drivers should be implemented by users themselves.
22
23Besides that, `esp_eth` component can drive third-party Ethernet module which integrates MAC and PHY and provides common communication interface (e.g. SPI, USB, etc). This example will take the `DM9051`, `W5500` or `KSZ8851SNL` SPI modules as an example, illustrating how to install the Ethernet driver in the same manner.
24
25The ESP-IDF supports the usage of multiple Ethernet interfaces at a time when external modules are utilized which is also demonstrated by this example. There are several options you can combine:
26   * Internal EMAC and one SPI Ethernet module.
27   * Two SPI Ethernet modules of the same type connected to single SPI interface and accessed by switching appropriate CS.
28   * Internal EMAC and two SPI Ethernet modules of the same type.
29
30#### Pin Assignment
31
32See common pin assignments for Ethernet examples from [upper level](../README.md#common-pin-assignments).
33
34When using two Ethernet SPI modules at a time, they are to be connected to single SPI interface. Both modules then share data (MOSI/MISO) and CLK signals. However, the CS, interrupt and reset pins need to be connected to separate GPIO for each Ethernet SPI module.
35
36### Configure the project
37
38```
39idf.py menuconfig
40```
41
42See common configurations for Ethernet examples from [upper level](../README.md#common-configurations).
43
44### Build, Flash, and Run
45
46Build the project and flash it to the board, then run monitor tool to view serial output:
47
48```
49idf.py -p PORT build flash monitor
50```
51
52(Replace PORT with the name of the serial port to use.)
53
54(To exit the serial monitor, type ``Ctrl-]``.)
55
56See the [Getting Started Guide](https://docs.espressif.com/projects/esp-idf/en/latest/get-started/index.html) for full steps to configure and use ESP-IDF to build projects.
57
58## Example Output
59
60```bash
61I (394) eth_example: Ethernet Started
62I (3934) eth_example: Ethernet Link Up
63I (3934) eth_example: Ethernet HW Addr 30:ae:a4:c6:87:5b
64I (5864) tcpip_adapter: eth ip: 192.168.2.151, mask: 255.255.255.0, gw: 192.168.2.2
65I (5864) eth_example: Ethernet Got IP Address
66I (5864) eth_example: ~~~~~~~~~~~
67I (5864) eth_example: ETHIP:192.168.2.151
68I (5874) eth_example: ETHMASK:255.255.255.0
69I (5874) eth_example: ETHGW:192.168.2.2
70I (5884) eth_example: ~~~~~~~~~~~
71```
72
73Now you can ping your ESP32 in the terminal by entering `ping 192.168.2.151` (it depends on the actual IP address you get).
74
75## Troubleshooting
76
77See common troubleshooting for Ethernet examples from [upper level](../README.md#common-troubleshooting).
78
79(For any technical queries, please open an [issue](https://github.com/espressif/esp-idf/issues) on GitHub. We will get back to you as soon as possible.)
80