Add .ino with OLED output

WiFiDHTOLED.ino

@@ -0,0 +1,115 @@
+#include <PubSubClient.h>
+#include <ESP8266WiFi.h>
+#include <DHTesp.h>
+
+#include <SPI.h>
+#include <Wire.h>
+#include <Adafruit_GFX.h>
+#include <Adafruit_SSD1306.h>
+
+#include "credential.h"
+
+#define SLEEP_MINUTES 1
+
+DHTesp dht;
+
+char* mqtt_server = "ashpool.lan";
+
+WiFiClient wclient;
+
+PubSubClient client(wclient, mqtt_server, 1883);
+
+String nodeID;
+
+
+#define SCREEN_WIDTH 128
+#define SCREEN_HEIGHT 64
+
+Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);
+
+void setup() {
+    Serial.begin(115200);
+    nodeID = "ESP_" + String(ESP.getChipId(), 16);
+
+    Serial.println("DHT MQTT Logger:" + nodeID + " Starting\n");
+
+    dht.setup(D4, DHTesp::DHT22);
+
+    Wire.begin(D6, D5);
+
+    if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3c)) {
+      Serial.println("SSD1306 allocation failed");
+    }
+
+    wifi_set_sleep_type(LIGHT_SLEEP_T);
+    wifi();
+
+    if (client.connect((char*) nodeID.c_str())) {
+      Serial.println("Connected to MQTT broker");
+    }
+
+    display.display();
+    display.drawPixel(10, 10, SSD1306_WHITE);
+    display.clearDisplay();
+    display.setTextSize(4);
+    display.setTextColor(SSD1306_WHITE);
+    
+}
+
+void wifi() {
+  WiFi.persistent(false);
+  WiFi.mode(WIFI_OFF);
+  WiFi.mode(WIFI_STA);
+  WiFi.begin(ssid_name, ssid_pass);  // Access WiFi, details from credential.h
+   
+  Serial.print("Connecting to ");
+  Serial.print(ssid_name);
+  Serial.print(" ...");
+
+  while (WiFi.status() != WL_CONNECTED) {   // Wait for WiFi to connect
+    delay(250);
+    Serial.print(".");
+  }
+
+  Serial.println('\n');
+  Serial.println("WiFi connection established");
+  Serial.print("Device's IP address is ");
+  Serial.println(WiFi.localIP());                        // Show device's IP address
+}
+
+template <typename T>
+void publish(const char * topic, T msg)
+{
+  if (!client.connected()) {
+      client.connect((char*) nodeID.c_str());
+    }
+  
+  client.publish(nodeID + "/" + topic, String(msg));
+  Serial.println(nodeID + "/" + topic + ": " + String(msg));
+}
+
+void loop() {
+  delay(dht.getMinimumSamplingPeriod());
+  
+  Serial.println ( "------------------------" ) ;
+
+  if (WiFi.status() != WL_CONNECTED) {
+    wifi();
+  }
+
+  float h = dht.getHumidity();
+  float t = dht.getTemperature();
+  float hic = dht.computeHeatIndex(t, h, false);
+  
+  publish("temp", t);
+  publish("relative_humidity", h);
+  publish("heat_index", String(hic));
+
+  display.clearDisplay();
+  display.setCursor(10,0);
+  display.println(String(t));
+  display.display();
+
+  delay(SLEEP_MINUTES * 60 * 1000L);
+  
+}