I’ve been successful in getting a bme280 and ethernet shield to work together. I’m new to arduino and programming, but I am having problems with the anemometer. Wind speed is showing as 0.00 mph. The counter function seems to be working properly. If I use a non-ethernet version of the anemometer and bme280, everything works fine. Any guidance would be appreciated. Here’s the code:
#include <Adafruit_Sensor.h>
#include <Adafruit_BME280.h>
#define BME_SCK 13
#define BME_MISO 12
#define BME_MOSI 11
#define BME_CS 10
#define SEALEVELPRESSURE_HPA (1013.25)
#define uint unsigned int
#define ulong unsigned long
#define PIN_ANEMOMETER 2 //The pin location of the anemometer sensor
#define MSECS_CALC_WIND_SPEED 5000
volatile int numRevsAnemometer = 0; // cup rotation counter used in interrupt routine
ulong nextCalcSpeed; // Timer to avoid contact bounce in interrupt routine
ulong time;
Adafruit_BME280 bme; // I2C
//Adafruit_BME280 bme(BME_CS); // hardware SPI
//Adafruit_BME280 bme(BME_CS, BME_MOSI, BME_MISO, BME_SCK);
#include <Wire.h> // used to communicate via the I2C bus
#include <SPI.h> // used to communicated via the spi bus
#include <Ethernet2.h> // used to communicate with the ethernet controller
// Here we setup the webserver. We need to supply a mac address. Some ethernet boards have a label attached
// with a mac address you can use.
byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
IPAddress ip(192, 168, 1, 45); // IP address, may need to change depending on network
EthernetServer server(80); // create a server at port 80
void setup() {
// disable the SD card by switching pin 4 high
pinMode(4, OUTPUT);
digitalWrite(4, HIGH);
// activate the BME280 sensor
if(!bme.begin()) {
Serial.println("Could not find the BME280 Sensor, check wiring");
while (1);
}
// start the Ethernet connection and the server:
Ethernet.begin(mac, ip);
server.begin();
Serial.begin(9600);
Serial.println("cactus.io | Webserver Tutorial");
Serial.print("server is at ");
Serial.println(Ethernet.localIP());
pinMode(PIN_ANEMOMETER, INPUT_PULLUP);
digitalWrite(PIN_ANEMOMETER, HIGH);
attachInterrupt(0, countAnemometer, FALLING);
nextCalcSpeed = millis() + MSECS_CALC_WIND_SPEED;
}
void windLoopCode() {
time = millis();
if (time >= nextCalcSpeed) {
calcWindSpeed();
nextCalcSpeed = time + MSECS_CALC_WIND_SPEED;
}
}
void countAnemometer() {
numRevsAnemometer++;
}
void calcWindSpeed() {
int x, iSpeed;
long speed =14920;
speed *= numRevsAnemometer;
speed /= MSECS_CALC_WIND_SPEED;
iSpeed = speed;
int x2 =iSpeed * 1.085 /10;
Serial.print( x);
Serial.print('.');
x = iSpeed % 10;
Serial.print(x2);
numRevsAnemometer = 0;
}
int x;
void loop() {
windLoopCode();
// listen for incoming clients
EthernetClient client = server.available();
if (client) {
Serial.println("new client");
// an http request ends with a blank line
boolean currentLineIsBlank = true;
while (client.connected()) {
if (client.available()) {
char c = client.read();
Serial.write(c);
// if you've gotten to the end of the line (received a newline
// character) and the line is blank, the http request has ended,
// so you can send a reply
if (c == '\n' && currentLineIsBlank) {
// send a standard http response header
client.println("HTTP/1.1 200 OK");
client.println("Content-Type: text/html");
client.println("Connection: close"); // the connection will be closed after completion of the response
client.println("Refresh: 5"); // refresh the page automatically every 5 sec
client.println();
client.println("<!DOCTYPE HTML>");
client.println("<html>");
client.println("<body>");
// output the value from the BME280 temperature sensor
client.print("Temperature = ");
client.print(bme.readTemperature() * 9.0 / 5.0 + 32 - 4.0);
client.println(" *F");
client.println("
");
client.print("Humidity = ");
client.print(bme.readHumidity());
client.println(" %");
client.println("
");
client.print("Pressure = ");
client.print(bme.readPressure() /100.0F );
client.println(" hPa");
client.println("
");
client.println("Wind Speed =");
client.print(x);
client.println("
");
client.println("</body>");
client.println("</html>");
break;
}
if (c == '\n') {
// you're starting a new line
currentLineIsBlank = true;
} else if (c != '\r') {
// you've gotten a character on the current line
currentLineIsBlank = false;
}
}
}
}
// give the web browser time to receive the data
delay(1);
// close the connection:
client.stop();
// Serial.println("client disconnected");
}