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https://github.com/alexandrebobkov/ESP-Nodes.git
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i2c sensor
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@ -1,8 +1,13 @@
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// Uncomment modules as required
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//#define RTC
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//#define MICRO_SD
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#define BMP280 // Adafruit BMP280; temp & pressure
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//#define BMP280 // Adafruit BMP280; temp & pressure
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//#define BME280 // Generic BME280; temp, pressure & humidity
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/*
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BME-280
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SCL -> GPIO 22
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SDA -> GPIO 21
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*/
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//#define AWSIoT
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#define MQTT_SSL
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@ -65,8 +70,8 @@ D22 14
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D23 15
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D34 19 Input only
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D35 20 Input only
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D32 21*
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D33 22*
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D32 21* => SCL I2C
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D33 22* => SDA I2C
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D25 23* => Assigned to DAC
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D26 24* => Assigned to DAC
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D27 25
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@ -11,6 +11,7 @@
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#include <Arduino.h>
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#include <WiFi.h>
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#include <Wire.h>
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#include <WiFiClientSecure.h>
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#include <PubSubClient.h>
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@ -40,11 +41,15 @@ Adafruit_BME280 bme;
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#endif
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// BMP280
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#ifdef BMP280
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// I2C setup
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Adafruit_BMP280 bmp();
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/*
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// BMP280 SPI setup
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#define BMP_SCK (18)
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#define BMP_MISO (19)
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#define BMP_MOSI (23)
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#define BMP_CS (5)
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//Adafruit_BMP280 bmp(BMP_CS);
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//Adafruit_BMP280 bmp(BMP_CS);*/
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#endif
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// Mosquitto
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@ -203,6 +208,7 @@ void mosquitto_connect ()
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void setup() {
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Serial.begin(115200);
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Serial.println();
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Serial.println("Running setup ...");
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sensors_values.humidity = 0.0;
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sensors_values.pressure = 0.0;
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sensors_values.temperature = 0.0;
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@ -229,12 +235,28 @@ void setup() {
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dacWrite(DAC1, 0);
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#endif
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Serial.println("setup");
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Serial.println("setup done");
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Serial.println("GPIO setup done");
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Serial.println("Scanning I2C bus ...");
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// Scan I2C bus
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byte address;
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for (address = 1; address < 127; address++)
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{
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Serial.print("Address: ");
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Serial.println(address, HEX);
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Wire.beginTransmission(address);
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if (Wire.endTransmission() == 0) {
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Serial.print("I2C device was found at address: ");
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Serial.println(address, HEX);
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}
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else if (Wire.endTransmission() == 4)
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Serial.println("I2C unknown error.");
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delay(150); //500
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}
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// WaveShare BME280
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#ifdef BME280
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unsigned status = bme.begin();
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unsigned status = bme.begin(); // 0x76
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if (!status) {
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Serial.println("Could not find a valid BME/BMP280 sensor, check wiring!");
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Serial.print("SensorID was: 0x"); Serial.println(bme.sensorID());//,16);
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@ -245,8 +267,8 @@ void setup() {
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while (1);
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}
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else {
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humidity = bme.readHumidity();
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pressure = bme.readPressure() / 100.0F;
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sensors_values.humidity = bme.readHumidity();
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sensors_values.pressure = bme.readPressure() / 100.0F;
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}
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#endif
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