update to start with millis reporting

00_prologue.ino

@@ -2,11 +2,6 @@
  * Libraries and global scope code
  */
 
-unsigned long lastMillis = 0;
-
-String devname;             // Device identifier for MQTT
-char nodename[80] = "UNDEF";
-
 struct Settings {
   String name = "";
   String ip = "";
@@ -14,6 +9,16 @@ struct Settings {
 
 time_t now;
 
+/*
+ * Modules will plug in to this thing via function pointers
+ */
+ // see also http://www.gammon.com.au/forum/?id=12607
+//void module_message(const String& shorttopic, const String& message) { //@@@@FIXME@@@@ instead of brightness, adjust mode?
+//void module_message(const String& shorttopic, const String& message) {
+//
+//}
+
+
 /*
  * Debugging might be nice sometimes
  */

10_wifi_conf.ino

@@ -13,6 +13,8 @@ WiFiClientSecure net;
 
 //BearSSL::WiFiClientSecure net;
 
+unsigned long ota_lastcheck = 0;
+
 //
 // If the WifiManager configuration portal is called, we can do stuff
 //
@@ -21,9 +23,13 @@ WiFiClientSecure net;
 //}
 
 void wifi_associate() {
+  char apname[80];
+  settings.name.toCharArray(apname, 80);
+
   WifiManager.setConfigPortalTimeout(300); // If no configuration is done in 5 mins, exit/restart quietly  
-  if (WifiManager.autoConnect(nodename)) { // @@@FIXME@@@ we should really set a PSK for the AP (but in my brief testing it crashed the ESP, so what's up with that)
-    PRINTLN_SERIAL("Wifi connected");  
+  if (WifiManager.autoConnect(apname)) { // @@@FIXME@@@ we should really set a PSK for the AP (but in my brief testing it crashed the ESP, so what's up with that)
+    settings.ip = WiFi.localIP().toString();
+    PRINTLN_SERIAL("Figured out my network \\O/");  
 
     //wificlient.setFingerprint(WTR_SHA1);
     net.setInsecure();    // Do not check fingerprint
@@ -45,31 +51,98 @@ void wifi_associate() {
   }
 }
 
+void wifi_checkin() {
+      // 'Native' in WiFiClient because we need to push the entire clientbuffer in the API
+      // As a result copying the buffer in to a new String for HTTPClient library use is highly inefficient
+      if (!net.connect(OTA_SERVER, OTA_PORT)) {
+        Serial.println("HTTPS connection failed");
+      } else {
+        Serial.println("HTTPS connection up");
+
+    // Check for firmware upgrades
+    String version = settings.name;
+    version.concat("-v");
+    version.concat(FW_VERSION);
+
+        String json = "{\"mac\":\"" + WiFi.macAddress() + "\",";
+        json.concat("\"version\":\"" + version + "\",");
+        json.concat("\"millis\":" + String(millis()) + "}");
+        
+        // Send request to the server:
+        net.println("POST " OTA_CHECKIN " HTTP/1.1");
+        net.println("Host: " OTA_SERVER);
+        net.println("Accept: */*");
+        net.println("Content-Type: application/json");
+        net.print("Content-Length: ");
+        net.println(json.length());
+        net.println("Connection: close");
+        net.println();
+        // Construct the REST/JSON POST data
+        net.print(json);
+        Serial.println("POST sent");
+      
+        while (net.connected()) {
+          String line = net.readStringUntil('\n');
+          if (line == "\r") {
+            Serial.println("Headers received");
+            break;
+          }
+        }
+        String line = net.readStringUntil('\n');
+        Serial.println("reply was:");
+        Serial.println("==========");
+        Serial.println(line);
+        Serial.println("==========");
+        Serial.println("closing connection");
+        net.stop();  // DISCONNECT FROM THE SERVER
+      }
+}
+
 void wifi_setup() {
 //  WifiManager.setAPCallback(WifiManagerCallback); // Enable WifiManager callback to clear the cache
   wifi_associate();
 }
 
 void wifi_loop() {
+
   if(WiFi.status() != WL_CONNECTED) {
     PRINTLN_SERIAL("Wifi disconnected, trying to reconnect");
     wifi_associate();
   }
-}
-/*
+
+  // OTA routine to be run once every X seconds
+  unsigned long ota_check = millis()/1000;
+  if((ota_lastcheck == 0) || ((ota_check - ota_lastcheck) > OTA_UPDATE_INTERVAL)) {
+    PRINTLN_SERIAL("Checking for OTA update");
+
     // Check for firmware upgrades
-    Serial.println("Checking for firmware upgrade");
-    t_httpUpdate_return ret = ESPhttpUpdate.update(wificlient, WTR_SERVER, WTR_SRVPORT, "/fw/", nodeversion);
+    String version = settings.name;
+    version.concat("-v");
+    version.concat(FW_VERSION);
+        PRINTLN_SERIAL("net.status: " + String(net.status()));
+
+    t_httpUpdate_return ret = ESPhttpUpdate.update(net, OTA_SERVER, OTA_PORT, OTA_URI, version);
+              PRINTLN_SERIAL("after httpupdate check net.status: " + String(net.status()));
+
     switch(ret) {
     case HTTP_UPDATE_FAILED: // HTTP 403, 404
-        Serial.printf("Firmware upgrade available, but update failed (%d): %s", ESPhttpUpdate.getLastError(), ESPhttpUpdate.getLastErrorString().c_str());
+        PRINT_SERIAL("Connection error, update failed ");
+        APPEND_SERIAL("(ERR ");
+        APPEND_SERIAL(String(ESPhttpUpdate.getLastError()));
+        APPEND_SERIAL(") ");
+        APPENDLN_SERIAL(ESPhttpUpdate.getLastErrorString().c_str());
         break;
     case HTTP_UPDATE_NO_UPDATES: // HTTP 304
-        Serial.println("No firmware upgrade available");
+        PRINTLN_SERIAL("No firmware upgrade available");
         break;
     case HTTP_UPDATE_OK: // HTTP 200
-        Serial.println("Firmware upgrade available, upgraded ok."); // may not called we reboot the ESP
+        PRINTLN_SERIAL("Firmware upgrade available, upgraded ok."); // may not called we reboot the ESP
         break;
     }
+    ota_lastcheck = ota_check;
     
-*/
+    // Check in with IoT server
+    wifi_checkin();
+  }
+
+}

30_interface_mqtt.ino

@@ -1,23 +1,13 @@
 #ifdef ENABLE_MQTT
 
-
 // sample schema's to use: https://www.home-assistant.io/integrations/light.mqtt/
 
-/*
- * Define a function newcmd in your module to be able to accept mqtt commands
- * Syntax and parameters are like this:
- */
-void newcmd(String cmd);
-void module_message(const String& shorttopic, const String& message);
-
 #include <PubSubClient.h>
     
-// Setup the MQTT client class by passing in the WiFi client and MQTT server and login details.
-  PubSubClient mqtt(net);
+// Setup the MQTT client class by passing in the WiFi client
+PubSubClient mqtt(net);
 String deviceprefix;
 
-const char* fingerprint = "EA:2A:2B:80:C1:00:57:35:66:26:FF:FC:FA:27:EA:5F:3D:91:5A:F9";
-
 long logtimerMillis = 0;
 
 void mqtt_subscribe(const String& topic) {
@@ -76,24 +66,37 @@ void mqtt_callback(char* topic, byte* payload, unsigned int length) {
 }
 
 void mqtt_connect() {
+/*  bool success= false;
+  success = net.connect(MQTT_SERVER, MQTT_SERVERPORT);
+  if (success) {
+    PRINTLN_SERIAL("Connection complete, valid cert, valid fingerprint.");
+  } else {
+    PRINTLN_SERIAL("Connection failed!");
+  } */
+                PRINTLN_SERIAL("prepare mqtt connect check net.status: " + String(net.status()));
+
   mqtt.setServer(MQTT_SERVER, MQTT_SERVERPORT);
   mqtt.setCallback(mqtt_callback);
+                PRINTLN_SERIAL("before mqtt connect check net.status: " + String(net.status()));
 
-  if(!mqtt.connected()) {
-    while (!mqtt.connected()) {
-      PRINTLN_SERIAL("MQTT not connected, connecting...");
+  while (!mqtt.connected()) {
+    PRINTLN_SERIAL("MQTT not connected, connecting...");
+                          PRINTLN_SERIAL("while mqtt connecting check net.status: " + String(net.status()));
 
-      // Attempt to connect
-      // Note - the default maximum packet size is 128 bytes. If the
-      // combined length of clientId, username and password exceed this,
-      // you will need to increase the value of MQTT_MAX_PACKET_SIZE in
-      // PubSubClient.h
-      if (mqtt.connect(settings.name.c_str(), MQTT_USERNAME, MQTT_PASSWORD)) {
-        PRINTLN_SERIAL("MQTT connected");
-      } else {
-        PRINTLN_SERIAL("MQTT connection failed, rc=" + String(mqtt.state()) + "...");
-        delay(10000); // @@@FIXME@@@ delays are not cool
-      }
+    // Attempt to connect
+    // Note - the default maximum packet size is 128 bytes. If the
+    // combined length of clientId, username and password exceed this,
+    // you will need to increase the value of MQTT_MAX_PACKET_SIZE in
+    // PubSubClient.h
+    if (mqtt.connect(settings.name.c_str(), MQTT_USERNAME, MQTT_PASSWORD)) {
+      PRINTLN_SERIAL("MQTT connected");
+                                  PRINTLN_SERIAL("mqtt just connected check net.status: " + String(net.status()));
+
+    } else {
+      PRINTLN_SERIAL("MQTT connection failed, rc=" + String(mqtt.state()) + "...");
+                                           PRINTLN_SERIAL("mqtt failed connected check net.status: " + String(net.status()));
+                                           
+      delay(10000); // @@@FIXME@@@ delays are not cool
     }
       
     // (re)subscribe to the topics we need
@@ -104,12 +107,13 @@ void mqtt_connect() {
     mqtt_subscribe(deviceprefix + "#");
     mqtt_publish(deviceprefix + "log", "Connected " + settings.name + " running v" + FW_VERSION + " at " + settings.ip);
     mqtt_publish(deviceprefix + "log", "Free Heap: " + String(ESP.getFreeHeap()));
+                PRINTLN_SERIAL("after mqtt connect check net.status: " + String(net.status()));
 
   }
 }
 
 void mqtt_setup() {
-  PRINTLN_SERIAL(devname + "initialising module MQTT");
+  PRINTLN_SERIAL("Initialising MQTT");
 }
 
 void mqtt_loop() {

60_module_sonoff.ino

@@ -6,14 +6,10 @@
 void newcmd(String cmd) {
   cmd.toLowerCase();
   if(cmd.equals("off")) {
-    settings.mode = 0;
     PRINTLN_SERIAL("Lights off");
-    state.text = "Sonoff switched off";
   }
   if(cmd.equals("on")) {
-    settings.mode = 1;
     PRINTLN_SERIAL("Lights on");
-    state.text = "Sonoff switched off";
   }
 }
 

99_setup_loop.ino

@@ -23,7 +23,7 @@ void setup() {
   // If we run in to trouble, this can painlessly be removed and the resulting device name will just be longer
   settings.name.remove(devlen+1, 6);
 
-  PRINTLN_SERIAL("device name generated");
+  PRINTLN_SERIAL("Figured out who I am \\O/");
 
   wifi_setup();
 
@@ -37,7 +37,7 @@ void setup() {
   moon_setup();
 #endif
   // Start the cooperative scheduler loops
-  PRINTLN_SERIAL(devname + "done setting up, ready for main loop");
+  PRINTLN_SERIAL("Done setting up, ready for main loop \\O/");
 }
 
 void loop() {

ESPGadget.ino

@@ -13,7 +13,7 @@
 // Implement versioning so that new firmware can be done OTA
 
 // Todo:
-// Split the wifi and mqtt code in order to support http interface
+// maybe: loading settings on SPIFFS or similar so we can create more generic firmware? https://arduino-esp8266.readthedocs.io/en/latest/filesystem.html#flash-layout
 // Stay on the lookout for watchdog crashes, see also https://www.sigmdel.ca/michel/program/esp8266/arduino/watchdogs_en.html#ESP8266_WDT_RECOV
 // Keeps crashing after a few days. Dunno why. https://www.pieterverhees.nl/sparklesagarbage/esp8266/130-difference-between-esp-reset-and-esp-restart
 // More on this subject https://github.com/esp8266/Arduino/issues/1017
@@ -30,11 +30,12 @@
 // (background: http://iot-bits.com/esp8266/esp8266-reset-causes-rst-cause/
 
 // Version history:
+// v14: Initial OTA support
 // v13: Refactored so config-settings are in config.h, move from Adafruit Neopixel to WS2812FX library
 // v12: Refactored inbound commands to hook in to the modules (module_message function), completed assimilation of (never-published) Moon_Connected sketch
 // v11: Simplified scheduler, back to cooperative looping
 // v10: First 'production' run. MQTT over TLS, but no OTA support.
-const int FW_VERSION = 13;
+const int FW_VERSION = 14;
 
 //
 // Configuration settings