# W5500 Lite Problem in ESP32(SOLVED) **URL:** \ **Category:** Networking, Protocols, and Devices\ **Created:** [May 30, 2021, 4:03pm UTC](https://forum.arduino.cc/t/w5500-lite-problem-in-esp32-solved/868640 "2021-05-30T16:03:50Z")\ **Posts on this page:** 12\ **Page:** 1
**Author:** ![mertkslkc](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/mertkslkc/32/222983_2.png) [@mertkslkc](https://forum.arduino.cc/u/mertkslkc)\ **Post date:** [May 30, 2021, 4:03pm UTC](https://forum.arduino.cc/t/w5500-lite-problem-in-esp32-solved/868640/1 "2021-05-30T16:03:50Z")
Good day, I want to use w5500 lite ethernet module with mqtt using esp32. However, I get the error Could not configure Ethernet using DHCP. The code and module links I used are attached. > **[Buy SPI to Ethernet/TCP/IP Converter - W5500, USR-ES1 with cheap price](https://www.robotistan.com/spi-to-ethernettcpip-converter-w5500-usr-es1)** > > SPI to Ethernet/TCP/IP Converter - W5500, USR-ES1 and 4000+ products for makers at Robotistan.com. Worldwide shipping at the same day. Review and buy right now! > **[Buy ESP32-WROOM-32U Wifi Bluetooth Development Module with Affordable Price -...](https://www.direnc.net/esp32-wroom-32u-wifi-bluetooth-gelistirme-modulu-en)** > > ESP32-WROO I-32 Wifi Bluetooth Development Module products suitable price, fast shipping options Wifi module, Turkey as the online Bluetooth Module category largest electronic component sales site Direnc.net® 'skin can buy immediately. ```cpp #include #include byte mac[] = {0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED}; EthernetClient net; PubSubClient client; unsigned long lastMillis = 0; void connect() { Serial.print("connecting..."); while (!client.connect("arduino32")) { } Serial.println("\nconnected!"); client.subscribe("/hello"); // client.unsubscribe("/hello"); } void callback(char* topic, byte* payload, unsigned int length) { } void setup() { Serial.begin(57600); Serial.println("Start Setup"); if (Ethernet.begin(mac)==0){ Serial.println("Failed to configure Ethernet using DHCP"); for(;;) ; } Ethernet.begin(mac, Ethernet.localIP()); Serial.println("Start MQTT"); client.setKeepAlive(90); client.setClient(net); client.setServer("xx.xxx.xxx.xxx", 1883); client.setCallback(callback); connect(); } void loop() { if (!client.connected()) { connect(); } // publish a message roughly every second. if (millis() - lastMillis >5000) { lastMillis = millis(); client.publish("/hello", "world"); } client.loop(); } ``` ---
**Author:** ![Juraj](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/juraj/32/238785_2.png) [@Juraj](https://forum.arduino.cc/u/Juraj)\ **Post date:** [May 30, 2021, 4:17pm UTC](https://forum.arduino.cc/t/w5500-lite-problem-in-esp32-solved/868640/2 "2021-05-30T16:17:26Z")
buy a LAN8720 module and see the ETH\_LAN8720 example of the WiFi library ---
**Author:** ![mertkslkc](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/mertkslkc/32/222983_2.png) [@mertkslkc](https://forum.arduino.cc/u/mertkslkc)\ **Post date:** [May 30, 2021, 4:19pm UTC](https://forum.arduino.cc/t/w5500-lite-problem-in-esp32-solved/868640/3 "2021-05-30T16:19:36Z")
I want to use w5500 because the dimensions are ideal, I drew the PCB circuit ☹ ---
**Author:** ![Juraj](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/juraj/32/238785_2.png) [@Juraj](https://forum.arduino.cc/u/Juraj)\ **Post date:** [May 30, 2021, 4:21pm UTC](https://forum.arduino.cc/t/w5500-lite-problem-in-esp32-solved/868640/4 "2021-05-30T16:21:20Z")
but the esp32 already has a MAC peripheral a TCP/IP stack and Arduino networking library and you duplicate this all with a W5500 and Ethernet library ---
**Author:** ![mertkslkc](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/mertkslkc/32/222983_2.png) [@mertkslkc](https://forum.arduino.cc/u/mertkslkc)\ **Post date:** [May 30, 2021, 4:36pm UTC](https://forum.arduino.cc/t/w5500-lite-problem-in-esp32-solved/868640/5 "2021-05-30T16:36:09Z")
Isn't it possible to use it with W5500 esp32? ---
**Author:** ![mikb55](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/mikb55/32/1149025_2.png) [@mikb55](https://forum.arduino.cc/u/mikb55)\ **Post date:** [May 30, 2021, 5:38pm UTC](https://forum.arduino.cc/t/w5500-lite-problem-in-esp32-solved/868640/6 "2021-05-30T17:38:36Z")
Which pin are you using for chip select? ---
**Author:** ![mertkslkc](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/mertkslkc/32/222983_2.png) [@mertkslkc](https://forum.arduino.cc/u/mertkslkc)\ **Post date:** [May 30, 2021, 5:45pm UTC](https://forum.arduino.cc/t/w5500-lite-problem-in-esp32-solved/868640/7 "2021-05-30T17:45:24Z")
ESP32 / W5500 23 ------\> MO 19 ------\> MI 18 ------\> SCK 5 ------\> CS ![ESP32-pinout](https://europe1.discourse-cdn.com/arduino/original/4X/5/c/5/5c59f9f85a9b5a9c6de1cb7f42de61ee201ffdd4.jpeg) ---
**Author:** ![mikb55](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/mikb55/32/1149025_2.png) [@mikb55](https://forum.arduino.cc/u/mikb55)\ **Post date:** [May 30, 2021, 5:49pm UTC](https://forum.arduino.cc/t/w5500-lite-problem-in-esp32-solved/868640/8 "2021-05-30T17:49:36Z")
Have a look inside the library to see what it is using by default. On the Uno it's pin 10 but I have no idea what it uses on the ESP32. ---
**Author:** ![mertkslkc](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/mertkslkc/32/222983_2.png) [@mertkslkc](https://forum.arduino.cc/u/mertkslkc)\ **Post date:** [May 30, 2021, 5:59pm UTC](https://forum.arduino.cc/t/w5500-lite-problem-in-esp32-solved/868640/9 "2021-05-30T17:59:38Z")
default pins i wrote ---
**Author:** ![Juraj](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/juraj/32/238785_2.png) [@Juraj](https://forum.arduino.cc/u/Juraj)\ **Post date:** [May 30, 2021, 6:09pm UTC](https://forum.arduino.cc/t/w5500-lite-problem-in-esp32-solved/868640/10 "2021-05-30T18:09:10Z")
try Ethernet.init(5); before Ethernet.begin and it should be `PubSubClient client(net);` ---
**Author:** ![mertkslkc](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/mertkslkc/32/222983_2.png) [@mertkslkc](https://forum.arduino.cc/u/mertkslkc)\ **Post date:** [May 30, 2021, 6:57pm UTC](https://forum.arduino.cc/t/w5500-lite-problem-in-esp32-solved/868640/11 "2021-05-30T18:57:31Z")
> [@Juraj](#): > > Ethernet.init(5); Thank you very much i was researching this problem for 2 days you saved me from a big mess. ---
**Author:** ![system](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/system/32/1140315_2.png) [@system](https://forum.arduino.cc/u/system)\ **Post date:** [September 27, 2021, 6:58pm UTC](https://forum.arduino.cc/t/w5500-lite-problem-in-esp32-solved/868640/12 "2021-09-27T18:58:11Z")
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