init ci

.gitignore

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+config.h

GPS2MQTT.ino

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+#include <TinyGPS++.h>
+#include <SoftwareSerial.h>
+#include <ArduinoMqttClient.h>
+#include <ESP8266WiFi.h>
+
+#include "config.h"
+
+#define BUFFER_SIZE 256
+#define SERIAL_TX_PIN 4
+#define SERIAL_RX_PIN 5
+
+#define LED_PIN 2
+
+#define LED_ERROR_DEALY_MS 100
+#define LED_PROGRESS_DELAY_MS 200
+
+#define MAX_SLEEP_TIME_MS 60 * 1000
+
+SoftwareSerial serialGPS(SERIAL_RX_PIN, SERIAL_TX_PIN);
+WiFiClient client;
+MqttClient mqttClient(client);
+
+void blinkLED(int count, int delayMS) {
+  for (int i = 0; i < count; i++) {
+    digitalWrite(LED_PIN, LOW);
+    delay(delayMS);
+    digitalWrite(LED_PIN, HIGH);
+    delay(delayMS);
+  }  
+}
+
+void errorLED(int count) {
+  blinkLED(count, LED_ERROR_DEALY_MS);
+}
+
+void progressLED(int count) {
+  blinkLED(count, LED_PROGRESS_DELAY_MS);
+}
+
+void okLED() {
+  blinkLED(1, 1000);
+}
+
+void setup() {
+  Serial.begin(9600);
+  while (!Serial) {
+    ; // wait for serial port to connect. Needed for native USB port only
+  }
+
+  serialGPS.begin(9600);
+
+  pinMode(LED_PIN, OUTPUT);
+  digitalWrite(LED_PIN, HIGH);
+
+  WiFi.begin(WLAN_SSID, WLAN_PASS);
+  while (WiFi.status() != WL_CONNECTED) {
+    delay(500);
+    Serial.print(".");
+  }
+  Serial.println("");
+  Serial.println("WiFi connected");
+  Serial.println(WiFi.localIP());
+
+  mqttClient.setUsernamePassword(MQTT_USERNAME, MQTT_PASSWORD);
+  if (!mqttClient.connect(MQTT_SERVER, MQTT_PORT)) {
+    Serial.print("MQTT connection failed! Error code = ");
+    Serial.println(mqttClient.connectError());
+
+    while (1);
+  } else {
+    Serial.println("MQTT connected");
+  }
+
+  Serial.println("Setup finished");
+}
+
+TinyGPSPlus gps;
+void loop() {
+  //Serial.println("Running loop");
+  
+  while (serialGPS.available() > 0) {
+    if (gps.encode(serialGPS.read())) {
+      if (gps.location.isValid()
+          && gps.date.isValid()
+          && gps.time.isValid()) {
+
+        mqttClient.beginMessage("/gps/data");
+        mqttClient.print(gps.date.year());
+        
+        if (gps.date.month() < 10) {
+          mqttClient.print("0");
+        }
+        mqttClient.print(gps.date.month());
+        
+        if (gps.date.day() < 10) {
+          mqttClient.print("0");
+        }
+        mqttClient.print(gps.date.day());
+        
+        if (gps.time.hour() < 10) {
+          mqttClient.print("0");
+        }
+        mqttClient.print(gps.time.hour());
+        
+        if (gps.time.minute() < 10) {
+          mqttClient.print("0");
+        }
+        mqttClient.print(gps.time.minute());
+        
+        if (gps.time.second() < 10) {
+          mqttClient.print("0");
+        }
+        mqttClient.print(gps.time.second());
+        mqttClient.print(" ");
+        mqttClient.print(String(gps.location.lat(), 8));
+        mqttClient.print(" ");
+        mqttClient.print(String(gps.location.lng(), 8));
+        mqttClient.endMessage();
+        
+        okLED();
+      } else {
+        Serial.println("Error: GPS not valid");
+        errorLED(5);
+      }
+    } else {
+      //Serial.println("Warning: GPS not readable");
+    }
+  }
+  
+  //Serial.println("Sleeping...");
+  //ESP.deepSleep(MAX_SLEEP_TIME_MS * 1000);
+}

config.h.example

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+#define WLAN_SSID "foo"
+#define WLAN_PASS "bar"
+
+#define MQTT_SERVER "example.org"
+#define MQTT_PORT 1883
+#define MQTT_USERNAME "baz"
+#define MQTT_PASSWORD "moep"