Trying http update. Works with HTTP on ESP8266

ampel-firmware/sensor_console.cpp

 #include "sensor_console.h"
 
 namespace sensor_console {
-  const uint8_t MAX_COMMANDS = 26;
+  const uint8_t MAX_COMMANDS = 27;
   //TODO: Check if it's really needed? Is it including parameter???
   const uint8_t MAX_COMMAND_SIZE = 40;
 

ampel-firmware/wifi_util.cpp

@@ -8,6 +8,8 @@
 
 #if defined(ESP8266)
 #  include <ESP8266WiFi.h>
+#  include <ESP8266HTTPClient.h>
+#  include <ESP8266httpUpdate.h>
 #elif defined(ESP32)
 #  include <WiFi.h>
 #endif
@@ -15,6 +17,50 @@
 namespace wifi {
   char local_ip[16]; // "255.255.255.255\0"
 
+  void update_started() {
+    Serial.println("CALLBACK:  HTTP update process started");
+  }
+
+  void update_finished() {
+    Serial.println("CALLBACK:  HTTP update process finished");
+  }
+
+  void update_progress(int cur, int total) {
+    Serial.printf("CALLBACK:  HTTP update process at %d of %d bytes...\n", cur, total);
+  }
+
+  void update_error(int err) {
+    Serial.printf("CALLBACK:  HTTP update fatal error code %d\n", err);
+  }
+
+  void update() {
+    ESPhttpUpdate.onStart(update_started);
+    ESPhttpUpdate.onEnd(update_finished);
+    ESPhttpUpdate.onProgress(update_progress);
+    ESPhttpUpdate.onError(update_error);
+    WiFiClient client;
+    t_httpUpdate_return ret = ESPhttpUpdate.update(client,
+        "http://servfbp1.fbp.hft-stuttgart.de/simstadt_doc/firmware.bin");
+    // Or:
+    //t_httpUpdate_return ret = ESPhttpUpdate.update(client, "server", 80, "file.bin");
+    //TODO: https://github.com/programmer131/ESP8266_ESP32_SelfUpdate
+
+    switch (ret) {
+    case HTTP_UPDATE_FAILED:
+      Serial.printf("HTTP_UPDATE_FAILD Error (%d): %s\n", ESPhttpUpdate.getLastError(),
+          ESPhttpUpdate.getLastErrorString().c_str());
+      break;
+
+    case HTTP_UPDATE_NO_UPDATES:
+      Serial.println("HTTP_UPDATE_NO_UPDATES");
+      break;
+
+    case HTTP_UPDATE_OK:
+      Serial.println("HTTP_UPDATE_OK");
+      break;
+    }
+  }
+
   bool connected() {
     return WiFi.status() == WL_CONNECTED;
   }
@@ -76,6 +122,7 @@ namespace wifi {
   void defineCommands() {
     sensor_console::defineCommand("wifi_scan", scanNetworks, F("(Scans available WiFi networks)"));
     sensor_console::defineCommand("local_ip", showLocalIp, F("(Displays local IP and current SSID)"));
+    sensor_console::defineCommand("update!", update, F("(Updates to latest firmware)"));
     //TODO: Add "update!" command? https://github.com/esp8266/Arduino/blob/master/libraries/ESP8266httpUpdate/examples/httpUpdate/httpUpdate.ino
   }
 }