#include <ESP8266WiFi.h>
#include <PubSubClient.h>
volatile unsigned int count = 0;
unsigned long next = 1000;
unsigned int temp = 0;
//#define HALL D5
uint8_t HALL = D5;
int rpm;
//int HALL = 14;
/*unsigned long prevmillis; // To store time
unsigned long duration; // To store time difference
unsigned long lcdrefresh; // To store time for lcd to refresh
int rpm; // RPM value
boolean currentstate;
boolean prevstate;
int count;*/
// Update these with values suitable for your network.
const char* ssid = "iPhone";
const char* password = "Xx@123456";
const char* mqtt_server = "91.121.93.94";
WiFiClient espClient;
PubSubClient client(espClient);
unsigned long lastMsg = 0;
#define MSG_BUFFER_SIZE (50)
char msg[MSG_BUFFER_SIZE];
int value = 0;
void setup_wifi() {
delay(10);
// We start by connecting to a WiFi network
Serial.println();
Serial.print("Connecting to ");
Serial.println(ssid);
WiFi.mode(WIFI_STA);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
randomSeed(micros());
Serial.println("");
Serial.println("WiFi connected");
Serial.println("IP address: ");
Serial.println(WiFi.localIP());
}
void callback(char* topic, byte* payload, unsigned int length) {
Serial.print("Message arrived [");
Serial.print(topic);
Serial.print("] ");
for (int i = 0; i < length; i++) {
Serial.print((char)payload[i]);
}
Serial.println();
// Switch on the LED if an 1 was received as first character
if ((char)payload[0] == '1') {
digitalWrite(BUILTIN_LED, LOW); // Turn the LED on (Note that LOW is the voltage level
// but actually the LED is on; this is because
// it is active low on the ESP-01)
} else {
digitalWrite(BUILTIN_LED, HIGH); // Turn the LED off by making the voltage HIGH
}
}
void reconnect() {
// Loop until we're reconnected
while (!client.connected()) {
Serial.print("Attempting MQTT connection...");
// Create a random client ID
String clientId = "ESP8266Client-";
clientId += String(random(0xffff), HEX);
// Attempt to connect
if (client.connect(clientId.c_str())) {
Serial.println("connected");
// Once connected, publish an announcement...
client.publish("device-1/sensor-1", "MQTT Server is Connected");
// ... and resubscribe
client.subscribe("inTopic");
} 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);
setup_wifi();
client.setServer(mqtt_server, 1883);
client.setCallback(callback);
pinMode(HALL, INPUT);
//prevmillis = 0;
//prevstate = LOW;
ICACHE_RAM_ATTR attachInterrupt(digitalPinToInterrupt(HALL), magnet_detect, RISING);
}
void magnet_detect()
{
//++count;
}
void loop() {
/*currentstate = digitalRead(HALL); // Read IR sensor state
if ( prevstate != currentstate) // If there is change in input
{
if ( currentstate == HIGH ) // If input only changes from LOW to HIGH
{
duration = ( micros() - prevmillis ); // Time difference between revolution in microsecond
rpm = (60000000 / duration); // rpm = (1/ time millis)*1000*1000*60;
prevmillis = micros(); // store time for nect revolution calculation
}
}
prevstate = currentstate;
Serial.println(rpm);*/
/*currentstate = digitalRead(HALL);
if ( prevstate != currentstate) {
if ( currentstate == HIGH ) {
count++;
}
}
else {
Serial.println("--");
}
Serial.println(count);*/
if (millis() > next) {
Serial.println(count);
temp = count;
//Serial.println(temp * 12);
count -= temp;
next += 1000;
}
rpm = temp * 12;
if (!client.connected()) {
reconnect();
}
client.loop();
unsigned long now = millis();
if (now - lastMsg > 1000) {
lastMsg = now;
++value;
snprintf (msg, MSG_BUFFER_SIZE, "%ld", rpm);
//Serial.print("Publish message: ");
//Serial.println(msg);
client.publish("device-1/sensor-1", msg);
}
}
