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#include <Wire.h>
#include <Adafruit_BMP280.h>
#include <BH1750.h>
#include <DHT.h>
// LM393
#define LM393_INTERVAL 1000
#define LM393_PIN 35 // ou 35 se preferir
volatile unsigned long contagem_lm393 = 0;
volatile bool prevLm393State = LOW;
void isr_lm393() {
bool state = digitalRead(LM393_PIN);
if (prevLm393State != state) {
contagem_lm393++;
}
prevLm393State = state;
}
unsigned long lastTime_lm393 = 0;
///////////////////////////////////////////////////////////////////////////
// BH1750
#define BH1750_INTERVAL 2000
BH1750 lightMeter;
unsigned long lastTime_bh1750 = 0;
///////////////////////////////////////////////////////////////////////////
// DHT11
#define DHT_PIN 32
#define DHTTYPE DHT11
DHT dht(DHT_PIN, DHTTYPE);
#define DHT11_HUM_INTERVAL 4000
unsigned long lastTime_dht11_hum = 0;
///////////////////////////////////
// BMP280
Adafruit_BMP280 bmp;
#define BMP280_PRESSURE_INTERVAL 5000
#define BMP280_TEMPERATURE_INTERVAL 3000
unsigned long lastTime_bmp280_press = 0;
unsigned long lastTime_bmp280_temp = 0;
/////////////////////////////////////
void setup() {
Serial.begin(115200);
Wire.begin(21, 22);
// LM393
pinMode(LM393_PIN, INPUT);
attachInterrupt(digitalPinToInterrupt(LM393_PIN), isr_lm393, CHANGE);
// BH1750
lightMeter.begin();
// DHT11
dht.begin();
// BMP280
bmp.begin(0x76);
Serial.println("Estacao iniciada");
}
void loop() {
unsigned long now = millis();
// LM393
if (now - lastTime_lm393 >= LM393_INTERVAL) {
int pulsos;
const float FATOR_KHM = 2.4;
noInterrupts();
pulsos = contagem_lm393;
contagem_lm393 = 0;
interrupts();
int giros = pulsos / 10;
float rps = ((float)pulsos/10.0f) / (LM393_INTERVAL / 1000.0f);
float velocidade = rps * FATOR_KHM;
Serial.print("Velocidade do tempo: ");
Serial.print(velocidade);
Serial.println(" km/h");
lastTime_lm393 = now;
}
// BH1750
if (now - lastTime_bh1750 >= BH1750_INTERVAL) {
Serial.print("Luz: ");
Serial.print(lightMeter.readLightLevel());
Serial.println(" lux");
lastTime_bh1750 = now;
}
// DHT11 - Umidade
if (now - lastTime_dht11_hum >= DHT11_HUM_INTERVAL) {
Serial.print("Umidade: ");
Serial.print(dht.readHumidity());
Serial.println(" %");
lastTime_dht11_hum = now;
}
// BMP280 - AIR PRESSURE
if (now - lastTime_bmp280_press >= BMP280_PRESSURE_INTERVAL) {
Serial.print("Pressao: ");
Serial.print(bmp.readPressure() / 100.0f);
Serial.println(" hPa");
lastTime_bmp280_press = now;
}
// BMP280 - TEMPERATURE
if (now - lastTime_bmp280_temp >= BMP280_TEMPERATURE_INTERVAL) {
Serial.print("Temperatura: ");
Serial.print(bmp.readTemperature());
Serial.println(" C");
lastTime_bmp280_temp = now;
}
}
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