Add a simple example

Author: earlephilhower

libraries/ESP8266httpUpdate/examples/httpUpdateSigned/httpUpdateSigned.ino

@@ -0,0 +1,96 @@
+/**
+   httpUpdate.ino
+
+    Created on: 27.11.2015
+
+*/
+
+#include <Arduino.h>
+
+#include <ESP8266WiFi.h>
+#include <ESP8266WiFiMulti.h>
+
+#include <ESP8266HTTPClient.h>
+#include <ESP8266httpUpdate.h>
+
+#define USE_SERIAL Serial
+
+ESP8266WiFiMulti WiFiMulti;
+
+const char pubkey[] PROGMEM = R"EOF(
+-----BEGIN PUBLIC KEY-----
+MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAyW5a4OO7xd6pRDTETO7h
+vEMBOr/wCqcTi/gi2/99rPnVvT7IH/qGSiYMxpGFKCXVqS4rU5k2XspALEquyGse
+Uav5hqsgHO6CQFFALqXzUVNCsJA9V6raUFhBaIqqCKmWzmeAkV+avM/zDQR9Wj1Q
+TCmi997sJJ5ICQc8cGSdvrhisUSbfPpKI9Ql4FApOZRABBBuZKhN9ujIzTv3OIAa
+rpQVfACKKuv7a2N2qU0uxRDojeO6odT1c6AZv6BlcF76GQGTo+/oBhqPdbAQuaBy
+cuWNgTnDQd6KUzV0E4it2fNG+cHN4kEvofN6gHx8IbOrXwFttlpAH/o7bcfCnUVh
+TQIDAQAB
+-----END PUBLIC KEY-----
+)EOF";
+BearSSLPublicKey *signPubKey = nullptr;
+BearSSLHashSHA256 *hash;
+BearSSLVerifier *sign;
+
+void setup() {
+
+  USE_SERIAL.begin(115200);
+  // USE_SERIAL.setDebugOutput(true);
+
+  USE_SERIAL.println();
+  USE_SERIAL.println();
+  USE_SERIAL.println();
+
+  for (uint8_t t = 4; t > 0; t--) {
+    USE_SERIAL.printf("[SETUP] WAIT %d...\n", t);
+    USE_SERIAL.flush();
+    delay(1000);
+  }
+
+  WiFi.mode(WIFI_STA);
+  WiFiMulti.addAP("SSID", "PASS");
+
+  signPubKey = new BearSSLPublicKey(pubkey);
+  hash = new BearSSLHashSHA256();
+  sign = new BearSSLVerifier(signPubKey);
+}
+
+
+void loop() {
+  // wait for WiFi connection
+  if ((WiFiMulti.run() == WL_CONNECTED)) {
+
+    WiFiClient client;
+
+
+    Update.installSignature(hash, sign);
+
+    // The line below is optional. It can be used to blink the LED on the board during flashing
+    // The LED will be on during download of one buffer of data from the network. The LED will
+    // be off during writing that buffer to flash
+    // On a good connection the LED should flash regularly. On a bad connection the LED will be
+    // on much longer than it will be off. Other pins than LED_BUILTIN may be used. The second
+    // value is used to put the LED on. If the LED is on with HIGH, that value should be passed
+    ESPhttpUpdate.setLedPin(LED_BUILTIN, LOW);
+
+    t_httpUpdate_return ret = ESPhttpUpdate.update(client, "http://192.168.1.8/esp8266.bin");
+    // Or:
+    //t_httpUpdate_return ret = ESPhttpUpdate.update(client, "server", 80, "file.bin");
+
+    switch (ret) {
+      case HTTP_UPDATE_FAILED:
+        USE_SERIAL.printf("HTTP_UPDATE_FAILED Error (%d): %s\n", ESPhttpUpdate.getLastError(), ESPhttpUpdate.getLastErrorString().c_str());
+        break;
+
+      case HTTP_UPDATE_NO_UPDATES:
+        USE_SERIAL.println("HTTP_UPDATE_NO_UPDATES");
+        break;
+
+      case HTTP_UPDATE_OK:
+        USE_SERIAL.println("HTTP_UPDATE_OK");
+        break;
+    }
+  }
+  delay(10000);
+}
+