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WT32-ETH01-i2c-BME280-DS3231.ino
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WT32-ETH01-i2c-BME280-DS3231.ino
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// i used Arduino IDE Menu => Tools => Board => 'ESP32 Dev Module'
// powerup WT32-ETH01 with IO0 pulled to ground, remove after programming and powercycle
// used USB FTDI programmer TX->RX0, RX->TX0, 3.3Volt and ground
//tested works with wt32-eth01
//dhcp webserver
//webpage shows button when pressed random data is displayed
// mcu to ajax? String message = "Random data: ";
// message += String(random(10000)); // Get random number
// next i2c data is printed to serial monitor for now
// i2c BME280 temp humid milibar sensor
// i2c DS3231 RTC realtimeclock
// I2C_SCL 32 // WT32-ETH01 CFG = Gpio 32 non standard i2c adress
// I2C_SDA 33 // WT32-ETH01 485_EN = Gpio 33 non standard i2c adress
// https://github.com/ldijkman/WT32-ETH01-LAN-8720-RJ45-/blob/main/WT32-ETH01-i2c-BME280-DS3231.ino
/*
Copyright statement: Part of This article is the original article of the CSDN blogger "Naisu_kun",
which follows the CC 4.0 BY-SA copyright agreement.
For reprinting, please attach the original source link and this statement.
Original link：https://blog.csdn.net/Naisu_kun/article/details/88572129
- Explanation of the code and other parameters: see the link above.
- Note: Original language: Chinese (You can use the Google translator to read English, or another language)
Part of This article is added by luberth dijkman
Copyright 2021 Dirk Luberth Dijkman Bangert 30 1619GJ Andijk The Netherlands
GNU General Public License,
which basically means that you may freely copy, change, and distribute it,
but you may not impose any restrictions on further distribution,
and you must make the source code available.
All above must be included in any redistribution
*/
#include <ETH.h> // quote to use ETH
#include <WiFi.h>
#include <WebServer.h> // Introduce corresponding libraries
#include <Wire.h>
#define I2C_SCL 32 // WT32-ETH01 CFG = Gpio 32 non standard i2c adress
#define I2C_SDA 33 // WT32-ETH01 485_EN = Gpio 33 non standard i2c adress
#include "RTClib.h" // https://github.com/adafruit/RTClib
RTC_DS3231 rtc; // download zip from above and install library from zip
// Sketch=>include library=>Add ZIP Library
#include <Adafruit_Sensor.h> // used zip from https://github.com/adafruit/Adafruit_Sensor
#include <Adafruit_BME280.h> // used zip from https://github.com/adafruit/Adafruit_BME280_Library
// Sketch=>include library=>Add ZIP Library
#define SEALEVELPRESSURE_HPA (1013.25)
Adafruit_BME280 BME280; // I2C
bool BME280_status;
int last_second = 0, second_ = 0; // some variables for time
unsigned long unix_epoch;
const char *monthName[12] = {"Januari", "Februari", "March", "April", "May", "Juni",
"Juli", "Augustus", "September", "October", "November", "December"
};
char dayname[7][12] = {"Sunday ", "Monday ", "Tuesday ", "Wednesday ", "Thursday ", "Friday ", "Saturday "};
#define ETH_ADDR 1
#define ETH_POWER_PIN 16//-1 //16 // Do not use it, it can cause conflict during the software reset.
#define ETH_POWER_PIN_ALTERNATIVE 16 //17
#define ETH_MDC_PIN 23
#define ETH_MDIO_PIN 18
#define ETH_TYPE ETH_PHY_LAN8720
#define ETH_CLK_MODE ETH_CLOCK_GPIO17_OUT // ETH_CLOCK_GPIO0_IN
IPAddress local_ip(192, 168, 178, 112);
IPAddress gateway(192, 168, 1, 1);
IPAddress subnet(255, 255, 255, 0);
IPAddress dns1(8, 8, 8, 8);
IPAddress dns2 = (uint32_t)0x00000000;
// Web page
String myhtmlPage =
String("") + "\r\n" +
"<html>" + "\r\n" +
"<head>" + "\r\n" +
" <title>ESP32 WebServer Test</title>" + "\r\n" +
" <script>" + "\r\n" +
" function getData() {" + "\r\n" +
" var xmlhttp;" + "\r\n" +
" if (window.XMLHttpRequest) {" + "\r\n" +
" xmlhttp = new XMLHttpRequest();" + "\r\n" +
" }" + "\r\n" +
" else {" + "\r\n" +
" xmlhttp = new ActiveXObject(\"Microsoft.XMLHTTP\");" + "\r\n" +
" }" + "\r\n" +
" xmlhttp.onreadystatechange = function() {" + "\r\n" +
" if (this.readyState == 4 && this.status == 200) {" + "\r\n" +
" document.getElementById(\"txtRandomData\").innerHTML = this.responseText;" + "\r\n" +
" }" + "\r\n" +
" };" + "\r\n" +
" xmlhttp.open(\"GET\", \"getRandomData\", true); " + "\r\n" +
" xmlhttp.send();" + "\r\n" +
" }" + "\r\n" +
" </script>" + "\r\n" +
"</head>" + "\r\n" +
"<body>" + "\r\n" +
" <div id=\"txtRandomData\">Unkwon</div>" + "\r\n" +
" <input type=\"button\" value=\"random\" onclick=\"getData()\">" + "\r\n" +
"</body>" + "\r\n" +
"</html>";
WebServer server(80); // Declare the WebServer object
void handleRoot() // Callback
{
server.send(200, "text/html", myhtmlPage); //!!! Note that returning to the web page requires "text / html" !!!
}
void handleAjax() // Callback
{
String message = "Random data: ";
message += String(random(10000)); // Get random number
server.send(200, "text/plain", message); // Send message back to page
}
static bool eth_connected = false;
void WiFiEvent(WiFiEvent_t event)
{
switch (event) {
case SYSTEM_EVENT_ETH_START:
Serial.println("ETH Started");
//set eth hostname here
ETH.setHostname("esp32-ethernet");
break;
case SYSTEM_EVENT_ETH_CONNECTED:
Serial.println("ETH Connected");
break;
case SYSTEM_EVENT_ETH_GOT_IP:
Serial.print("ETH MAC: ");
Serial.print(ETH.macAddress());
Serial.print(", IPv4: ");
Serial.print(ETH.localIP());
if (ETH.fullDuplex()) {
Serial.print(", FULL_DUPLEX");
}
Serial.print(", ");
Serial.print(ETH.linkSpeed());
Serial.println("Mbps");
eth_connected = true;
break;
case SYSTEM_EVENT_ETH_DISCONNECTED:
Serial.println("ETH Disconnected");
eth_connected = false;
break;
case SYSTEM_EVENT_ETH_STOP:
Serial.println("ETH Stopped");
eth_connected = false;
break;
default:
break;
}
}
void setup() {
pinMode(ETH_POWER_PIN_ALTERNATIVE, OUTPUT);
digitalWrite(ETH_POWER_PIN_ALTERNATIVE, HIGH);
Serial.begin(115200);
delay(2500);
Serial.println("hello");
Wire.begin(I2C_SDA, I2C_SCL); // start i2c on non stndard i2c pins
WiFi.onEvent(WiFiEvent);
ETH.begin(ETH_ADDR, ETH_POWER_PIN, ETH_MDC_PIN, ETH_MDIO_PIN, ETH_TYPE, ETH_CLK_MODE); // Enable ETH
//ETH.config(local_ip, gateway, subnet, dns1, dns2); // Static IP, leave without this line to get IP via DHCP
while(!((uint32_t)ETH.localIP())){}; // Waiting for IP (leave this line group to get IP via DHCP)
server.on("/", handleRoot); // Register link and callback function
server.on("/getRandomData", HTTP_GET, handleAjax); // Request and callback function of the get method sent by ajax in the registration web page
server.begin(); // Start server
Serial.println("Web server started");
if (! rtc.begin()) {
Serial.println("Could not find RTC, i2c DS3231 realtimeclock not found");
}
BME280_status = BME280.begin(0x76);
if (!BME280_status) {
Serial.println("Could not find a valid BME280 sensor, check wiring!");
}
// set the time from PC to DS3231 RTC
if (rtc.lostPower() ) {
Serial.println("RTC lost power, lets set the time!");
// following line sets the RTC to the date & time this sketch was compiled
rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
// This line sets the RTC with an explicit date & time, for example to set
// 2020 juli 24 20:15:00 you would call:
// rtc.adjust(DateTime(2020, 7, 24, 20, 15, 0));
}
}
void loop() {
DateTime now = rtc.now(); // DS3231 RTC RealTimeClock
second_ = now.second();
if (last_second != second_) { // do next only once each new second
last_second = second_;
if (now.hour() < 10)Serial.print(" "); // print 01 to 09 as 1 to 9
Serial.print(now.hour());
Serial.print(":");
if (now.minute() < 10)Serial.print("0"); // print 1 to 9 as 01 to 09
Serial.print(now.minute());
Serial.print(":");
if (now.second() < 10)Serial.print("0"); // print 1 to 9 as 01 to 09
Serial.print(now.second());
Serial.print("Day ");
Serial.print(now.dayOfTheWeek()); // prints daynumber of the week, weekend sux, sunday=0, saturday=6
Serial.print(dayname[now.dayOfTheWeek()]);
Serial.print(now.day());
Serial.print(" ");
Serial.print(monthName[now.month() - 1]);
Serial.print(" ");
Serial.print(now.year());
Serial.print(" ");
float TempCelsius;
TempCelsius = BME280.readTemperature(); // get temp from BME280
//TempCelsius = TempCelsius + CalibrationOffset;
// Serial.print("Fahrenheit = "); Serial.print(Tf, 1);
Serial.print(" Celsius = "); Serial.println(TempCelsius, 1);
// https://www.google.com/search?q=3+fahrenheit+to+celsius
Serial.print("Temperature = ");
Serial.print(TempCelsius);
Serial.println(" *C");
// Convert temperature to Fahrenheit
// Serial.print("Temperature = ");
// Serial.print(1.8 * BME280.readTemperature() + 32);
// Serial.println(" *F");
Serial.print("Pressure = ");
Serial.print(BME280.readPressure() / 100.0F);
Serial.println(" hPa");
Serial.print("Approx. Altitude = ");
Serial.print(BME280.readAltitude(SEALEVELPRESSURE_HPA));
Serial.println(" m");
Serial.print("Humidity = ");
Serial.print(BME280.readHumidity());
Serial.println(" %");
Serial.println();
} // end last_second not is second_
server.handleClient(); // Handling requests from clients
}
// A Penny for Sharing My Thoughts?
// www.paypal.me/LDijkman