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xin
2025-07-08 08:54:35 +08:00
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commit 6de3458dfc
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lib/WebServer_ESP32_W5500/examples/MQTTClient_Basic/MQTTClient_Basic.ino Normal file
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/****************************************************************************************************************************
MQTTClient_Basic.ino - Dead simple MQTT Client for Ethernet shields
For Ethernet shields using ESP32_W5500 (ESP32 + W5500)
WebServer_ESP32_W5500 is a library for the ESP32 with Ethernet W5500 to run WebServer
Based on and modified from ESP32-IDF https://github.com/espressif/esp-idf
Built by Khoi Hoang https://github.com/khoih-prog/WebServer_ESP32_W5500
Licensed under GPLv3 license
*****************************************************************************************************************************/
/*
Basic MQTT example (without SSL!) with Authentication
This sketch demonstrates the basic capabilities of the library.
It connects to an MQTT server then:
- providing username and password
- publishes "hello world" to the topic "outTopic"
- subscribes to the topic "inTopic", printing out any messages
it receives. NB - it assumes the received payloads are strings not binary
It will reconnect to the server if the connection is lost using a blocking
reconnect function. See the 'mqtt_reconnect_nonblocking' example for how to
achieve the same result without blocking the main loop.
*/
#if !( defined(ESP32) )
#error This code is designed for (ESP32 + W5500) to run on ESP32 platform! Please check your Tools->Board setting.
#endif
#define DEBUG_ETHERNET_WEBSERVER_PORT Serial
// Debug Level from 0 to 4
#define _ETHERNET_WEBSERVER_LOGLEVEL_ 3
//////////////////////////////////////////////////////////
// Optional values to override default settings
// Don't change unless you know what you're doing
//#define ETH_SPI_HOST SPI3_HOST
//#define SPI_CLOCK_MHZ 25
// Must connect INT to GPIOxx or not working
//#define INT_GPIO 4
//#define MISO_GPIO 19
//#define MOSI_GPIO 23
//#define SCK_GPIO 18
//#define CS_GPIO 5
//////////////////////////////////////////////////////////
#include <WebServer_ESP32_W5500.h>
WebServer server(80);
// Enter a MAC address and IP address for your controller below.
#define NUMBER_OF_MAC 20
byte mac[][NUMBER_OF_MAC] =
{
{ 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0x01 },
{ 0xDE, 0xAD, 0xBE, 0xEF, 0xBE, 0x02 },
{ 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0x03 },
{ 0xDE, 0xAD, 0xBE, 0xEF, 0xBE, 0x04 },
{ 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0x05 },
{ 0xDE, 0xAD, 0xBE, 0xEF, 0xBE, 0x06 },
{ 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0x07 },
{ 0xDE, 0xAD, 0xBE, 0xEF, 0xBE, 0x08 },
{ 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0x09 },
{ 0xDE, 0xAD, 0xBE, 0xEF, 0xBE, 0x0A },
{ 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0x0B },
{ 0xDE, 0xAD, 0xBE, 0xEF, 0xBE, 0x0C },
{ 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0x0D },
{ 0xDE, 0xAD, 0xBE, 0xEF, 0xBE, 0x0E },
{ 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0x0F },
{ 0xDE, 0xAD, 0xBE, 0xEF, 0xBE, 0x10 },
{ 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0x11 },
{ 0xDE, 0xAD, 0xBE, 0xEF, 0xBE, 0x12 },
{ 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0x13 },
{ 0xDE, 0xAD, 0xBE, 0xEF, 0xBE, 0x14 },
};
// Select the IP address according to your local network
IPAddress myIP(192, 168, 2, 232);
IPAddress myGW(192, 168, 2, 1);
IPAddress mySN(255, 255, 255, 0);
// Google DNS Server IP
IPAddress myDNS(8, 8, 8, 8);
#include <PubSubClient.h>
// Update these with values suitable for your network.
//const char* mqttServer = "broker.example"; // Broker address
const char* mqttServer = "broker.emqx.io"; // Broker address
//const char* mqttServer = "broker.shiftr.io"; // Broker address
const char *ID = "MQTTClient_SSL-Client"; // Name of our device, must be unique
const char *TOPIC = "MQTT_Pub"; // Topic to subscribe to
const char *subTopic = "MQTT_Sub"; // Topic to subscribe to
//IPAddress mqttServer(172, 16, 0, 2);
void callback(char* topic, byte* payload, unsigned int length)
{
Serial.print("Message arrived [");
Serial.print(topic);
Serial.print("] ");
for (unsigned int i = 0; i < length; i++)
{
Serial.print((char)payload[i]);
}
Serial.println();
}
WiFiClient ethClient;
PubSubClient client(mqttServer, 1883, callback, ethClient);
void reconnect()
{
// Loop until we're reconnected
while (!client.connected())
{
//Serial.print("Attempting MQTT connection to ");
//Serial.print(mqttServer);
// Attempt to connect
if (client.connect(ID, "try", "try"))
{
//Serial.println("...connected");
// Once connected, publish an announcement...
String data = "Hello from MQTTClient_SSL on " + String(BOARD_NAME);
client.publish(TOPIC, data.c_str());
//Serial.println("Published connection message successfully!");
//Serial.print("Subscribed to: ");
//Serial.println(subTopic);
// This is a workaround to address https://github.com/OPEnSLab-OSU/SSLClient/issues/9
//ethClientSSL.flush();
// ... and resubscribe
client.subscribe(subTopic);
// for loopback testing
client.subscribe(TOPIC);
// This is a workaround to address https://github.com/OPEnSLab-OSU/SSLClient/issues/9
//ethClientSSL.flush();
}
else
{
Serial.print("...failed, rc=");
Serial.print(client.state());
Serial.println(" try again in 5 seconds");
// Wait 5 seconds before retrying
delay(5000);
}
}
}
void setup()
{
Serial.begin(115200);
while (!Serial && (millis() < 5000));
Serial.print(F("\nStart MQTTClient_Basic on "));
Serial.print(ARDUINO_BOARD);
Serial.print(F(" with "));
Serial.println(SHIELD_TYPE);
Serial.println(WEBSERVER_ESP32_W5500_VERSION);
ET_LOGWARN(F("Default SPI pinout:"));
ET_LOGWARN1(F("SPI_HOST:"), ETH_SPI_HOST);
ET_LOGWARN1(F("MOSI:"), MOSI_GPIO);
ET_LOGWARN1(F("MISO:"), MISO_GPIO);
ET_LOGWARN1(F("SCK:"), SCK_GPIO);
ET_LOGWARN1(F("CS:"), CS_GPIO);
ET_LOGWARN1(F("INT:"), INT_GPIO);
ET_LOGWARN1(F("SPI Clock (MHz):"), SPI_CLOCK_MHZ);
ET_LOGWARN(F("========================="));
///////////////////////////////////
// To be called before ETH.begin()
ESP32_W5500_onEvent();
// start the ethernet connection and the server:
// Use DHCP dynamic IP and random mac
//bool begin(int MISO_GPIO, int MOSI_GPIO, int SCLK_GPIO, int CS_GPIO, int INT_GPIO, int SPI_CLOCK_MHZ,
// int SPI_HOST, uint8_t *W6100_Mac = W6100_Default_Mac);
ETH.begin( MISO_GPIO, MOSI_GPIO, SCK_GPIO, CS_GPIO, INT_GPIO, SPI_CLOCK_MHZ, ETH_SPI_HOST );
//ETH.begin( MISO_GPIO, MOSI_GPIO, SCK_GPIO, CS_GPIO, INT_GPIO, SPI_CLOCK_MHZ, ETH_SPI_HOST, mac[millis() % NUMBER_OF_MAC] );
// Static IP, leave without this line to get IP via DHCP
//bool config(IPAddress local_ip, IPAddress gateway, IPAddress subnet, IPAddress dns1 = 0, IPAddress dns2 = 0);
//ETH.config(myIP, myGW, mySN, myDNS);
ESP32_W5500_waitForConnect();
///////////////////////////////////
client.setServer(mqttServer, 1883);
client.setCallback(callback);
// Allow the hardware to sort itself out
delay(1500);
}
#define MQTT_PUBLISH_INTERVAL_MS 5000L
String data = "Hello from MQTTClient_Basic on " + String(ARDUINO_BOARD) + " with " + String(SHIELD_TYPE);
const char *pubData = data.c_str();
unsigned long lastMsg = 0;
void loop()
{
static unsigned long now;
if (!client.connected())
{
reconnect();
}
// Sending Data
now = millis();
if (now - lastMsg > MQTT_PUBLISH_INTERVAL_MS)
{
lastMsg = now;
if (!client.publish(TOPIC, pubData))
{
Serial.println("Message failed to send.");
}
Serial.print("Message Send : " + String(TOPIC) + " => ");
Serial.println(data);
}
client.loop();
}