From 4947d7bd74643eed7ea824dd72a12705963c0dfd Mon Sep 17 00:00:00 2001
From: Abhishek Ghosh <dr.abhishek_ghosh@hotmail.com>
Date: Sat, 18 Apr 2020 03:47:55 +0530
Subject: [PATCH] Create detect-smartwatch-on-dashboard-widget.ino

---
 detect-smartwatch-on-dashboard-widget.ino | 181 ++++++++++++++++++++++
 1 file changed, 181 insertions(+)
 create mode 100644 detect-smartwatch-on-dashboard-widget.ino

diff --git a/detect-smartwatch-on-dashboard-widget.ino b/detect-smartwatch-on-dashboard-widget.ino
new file mode 100644
index 0000000..b8ff8d4
--- /dev/null
+++ b/detect-smartwatch-on-dashboard-widget.ino
@@ -0,0 +1,181 @@
+#include "BLEDevice.h"
+#include <WiFi.h>
+#include <WiFiMulti.h>
+#include <HTTPClient.h>
+#include <base64.h>
+#define USE_SERIAL Serial 
+
+const char* ssid = "your-hotspot";
+const char* password = "password-of-hotspot";
+
+#define ORG "paste-it-here" 
+#define DEVICE_TYPE "DevBoard" //change
+#define DEVICE_ID "ESP32" // change
+#define TOKEN "your-token"
+#define EVENT "myEvent" // example
+
+String urlPath = "/api/v0002/device/types/" DEVICE_TYPE "/devices/" DEVICE_ID "/events/" EVENT;
+String urlHost = ORG ".messaging.internetofthings.ibmcloud.com";
+int urlPort = 8883;
+String authHeader;
+
+static BLEAddress *pServerAddress;
+BLEScan* pBLEScan;
+BLEClient*  pClient;
+bool deviceFound = false;
+bool LEDoff = false;
+bool BotonOff = false;
+String knownAddresses[] = { "e0:a1:07:b7:0b:95"}; // change the MAC
+unsigned long entry;
+
+// <------- CHANGE PARAMETERS ABOVE THIS LINE ------------>
+
+static void notifyCallback(
+  BLERemoteCharacteristic* pBLERemoteCharacteristic,
+  uint8_t* pData,
+  size_t length,
+  bool isNotify) {
+  Serial.print("Notify callback for characteristic ");
+  Serial.print(pBLERemoteCharacteristic->getUUID().toString().c_str());
+  Serial.print(" of data length ");
+  Serial.println(length);
+}
+
+class MyAdvertisedDeviceCallbacks: public BLEAdvertisedDeviceCallbacks {
+    void onResult(BLEAdvertisedDevice Device){
+      // show the MAC of other BLE devices
+      //Serial.print("BLE Advertised Device found: ");
+      //Serial.println(Device.toString().c_str());
+      pServerAddress = new BLEAddress(Device.getAddress()); 
+      bool known = false;
+      bool Master = false;
+      for (int i = 0; i < (sizeof(knownAddresses) / sizeof(knownAddresses[0])); i++) {
+        if (strcmp(pServerAddress->toString().c_str(), knownAddresses[i].c_str()) == 0) 
+          known = true;
+      }
+      if (known) {
+        Serial.print("Our device found!");
+        Serial.print("Device distance:");
+        Serial.println(Device.getRSSI());
+        // adjust the value. -85 is medium distance
+        // -60 is closer than -85
+        if (Device.getRSSI() > -85) {
+          deviceFound = true;
+        }
+        else {
+          deviceFound = false;
+        }
+        Device.getScan()->stop();
+        delay(100);
+      }
+    }
+};
+void setup() {
+  Serial.begin(115200);
+  BLEDevice::init("");
+  pClient  = BLEDevice::createClient();
+  pBLEScan = BLEDevice::getScan();
+  pBLEScan->setAdvertisedDeviceCallbacks(new MyAdvertisedDeviceCallbacks());
+  pBLEScan->setActiveScan(true);
+   initWifi();
+   authHeader = "Authorization: Basic " + base64::encode("use-token-auth:" TOKEN) + "\r\n";
+  Serial.println("Done");
+}
+void Bluetooth() {
+  Serial.println();
+  Serial.println("BLE Scan restarted.....");
+  deviceFound = false;
+  BLEScanResults scanResults = pBLEScan->start(5);
+  if (deviceFound) {
+    Serial.println("Found");
+    doWiFiClientSecure();
+    delay(10000);
+  }
+  else{
+    Serial.println("Device is not closer");
+    doWiFiClientLost();
+  }
+}
+void loop() { 
+  Bluetooth();
+}
+
+void doWiFiClientSecure() {
+ WiFiClientSecure client;
+ Serial.print("connect: "); Serial.println(urlHost);
+ while ( ! client.connect(urlHost.c_str(), urlPort)) {
+    Serial.print(".");
+ }
+ Serial.println("Connected");
+ String postData = String("{  \"d\": {\"Our device found!\": \"") + millis()/1000 + "\"}  }";
+ String msg = "POST " + urlPath + " HTTP/1.1\r\n"
+                "Host: " + urlHost + "\r\n"
+                "" + authHeader + ""
+                "Content-Type: application/json\r\n"
+                "Content-Length: " + postData.length() + "\r\n"
+                "\r\n" + postData;
+                
+ client.print(msg);
+ Serial.print(msg);
+
+ Serial.print("\n*** Request sent, receiving response...");
+ while (!!!client.available()) {
+    delay(50);
+ Serial.print(".");
+  }
+  
+Serial.println();
+Serial.println("Got response");  
+  while(client.available()){
+  Serial.write(client.read());
+  }
+Serial.println(); Serial.println("closing connection");
+  client.stop();
+}
+
+void doWiFiClientLost() {
+ WiFiClientSecure client;
+ Serial.print("connect: "); Serial.println(urlHost);
+ while ( ! client.connect(urlHost.c_str(), urlPort)) {
+    Serial.print(".");
+ }
+ Serial.println("Connected");
+ String postData = String("{  \"d\": {\"Our device is away!\": \"") + millis()/1000 + "\"}  }";
+ String msg = "POST " + urlPath + " HTTP/1.1\r\n"
+                "Host: " + urlHost + "\r\n"
+                "" + authHeader + ""
+                "Content-Type: application/json\r\n"
+                "Content-Length: " + postData.length() + "\r\n"
+                "\r\n" + postData;
+                
+ client.print(msg);
+ Serial.print(msg);
+
+ Serial.print("\n*** Request sent, receiving response...");
+ while (!!!client.available()) {
+    delay(50);
+ Serial.print(".");
+  }
+  
+Serial.println();
+Serial.println("Got response");  
+  while(client.available()){
+  Serial.write(client.read());
+  }
+Serial.println(); Serial.println("closing connection");
+  client.stop();
+}
+
+void initWifi() {
+  Serial.print("Connecting to: "); Serial.print(WiFi.SSID());
+  WiFi.mode(WIFI_STA);   
+  WiFi.begin(ssid, password);  
+  while (WiFi.status() != WL_CONNECTED) {
+     delay(250);
+     Serial.print(".");
+  }
+  
+  Serial.println("");
+  Serial.print("WiFi connected, IP address: "); Serial.println(WiFi.localIP());
+
+}