Add BME280 support to log temperature, humidity, and air pressure

autoplant/autoplant.ino

@@ -3,9 +3,14 @@
 
 // #include <ArduinoJson.h>
 #include <ESP8266WiFi.h>
+
 #include "./lib/pubsubclient/PubSubClient.h"
 #include "./lib/pubsubclient/PubSubClient.cpp"
 
+// These libraries need installing in the Arduino IDE Library Manager (if you install the BME280 one it should prompt for the unified sensor library automatically)
+#include <Adafruit_Sensor.h>
+#include <Adafruit_BME280.h>
+
 #include "settings.h"
 
 #define MULTIPLEX_PINA	D5
@@ -38,6 +43,8 @@
 WiFiClientSecure transport;
 PubSubClient mqtt;
 
+Adafruit_BME280 bme;	// I2C
+
 float read_analog(int channel) {
 	
 	const char* bin = std::bitset<8>(channel).to_string().c_str();
@@ -134,6 +141,15 @@ void setup() {
 		while(true) delay(10000);
 	}
 	Serial.println("ok");
+	
+	Serial.print("BME280: ");
+	
+    if(!bme.begin(0x76)) {
+		Serial.println("failed!");
+	}
+	else {
+		Serial.println("ok");
+	}
 }
 
 void loop() {
@@ -141,6 +157,9 @@ void loop() {
 	float soil_b = read_analog(SOIL_B);
 	float water_level_a = read_analog(WATER_LEVEL_A);
 	float water_level_b = read_analog(WATER_LEVEL_B);
+	float temp = bme.readTemperature();
+	float humidity = bme.readHumidity();
+	float pressure = bme.readPressure() / 100.0F;
 	
 	// StaticJsonDocument<96> data;
 	
@@ -165,6 +184,22 @@ void loop() {
 		water_level_b
 	)) Serial.println("[mqtt] Failed to send message");
 	
+	if(!send_mqtt(
+		"autoplant-a",
+		"temperature",
+		temp
+	)) Serial.println("[mqtt] Failed to send message");
+	if(!send_mqtt(
+		"autoplant-a",
+		"humidity",
+		humidity
+	)) Serial.println("[mqtt] Failed to send message");
+	if(!send_mqtt(
+		"autoplant-a",
+		"pressure",
+		pressure
+	)) Serial.println("[mqtt] Failed to send message");
+	
 	// data["id"] = "autoplant-a";
 	// data["sensor"] = "soil";
 	// data["value"] = soil_a;