Introduce AzureIoTHubClass to reduce boilerplate in the sketch

Author: sandeepmistry

examples/samd/simplesample_http/simplesample_http.ino

@@ -13,7 +13,7 @@ and removing calls to _DoWork will yield the same results. */
 
 #include "AzureIoTHub.h"
 
-static const char* connectionString = "HostName=[host].azure-devices.net;DeviceId=[device];SharedAccessKey=[key]";
+static const char* connectionString = "[device connection string]";
 
 // Define the Model
 BEGIN_NAMESPACE(WeatherStation);

examples/samd/simplesample_http/simplesample_http.c renamed to examples/simplesample_http/simplesample_http.c

@@ -0,0 +1,23 @@
+// Copyright (c) Arduino. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+#include <AzureIoTHub.h>
+
+#include "simplesample_http.h"
+
+char ssid[] = "yourNetwork"; //  your network SSID (name)
+char pass[] = "secretPassword";    // your network password (use for WPA, or use as key for WEP)
+
+void setup() {
+    Serial.begin(9600);
+    while(!Serial) {
+        ;
+    }
+
+    AzureIoTHub.begin(ssid, pass);
+}
+
+void loop() {
+    simplesample_http_run();
+}
+

examples/samd/simplesample_http/simplesample_http.h renamed to examples/simplesample_http/simplesample_http.h

@@ -0,0 +1,19 @@
+#######################################
+# Syntax Coloring Map For WiFi
+#######################################
+
+#######################################
+# Datatypes (KEYWORD1)
+#######################################
+
+AzureIoTHub	KEYWORD1
+
+#######################################
+# Methods and Functions (KEYWORD2)
+#######################################
+
+begin	KEYWORD2
+
+#######################################
+# Constants (LITERAL1)
+#######################################

examples/simplesample_http/simplesample_http.ino

@@ -0,0 +1,117 @@
+// Copyright (c) Arduino. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+#include <time.h>
+#include <sys/time.h>
+
+#if defined(ARDUINO_SAMD_FEATHER_M0)
+#include <Adafruit_WINC1500.h>
+#elif defined(ARDUINO_SAMD_ZERO) || defined(ARDUINO_SAMD_MKR1000)
+#include <WiFi101.h>
+#elif defined(ARDUINO_ARCH_ESP8266)
+#include <ESP8266WiFi.h>
+#else
+#error "Unsupported platform"
+#endif
+
+#include "util/NTPClient.h"
+
+#include "AzureIoTHub.h"
+
+AzureIoTHubClass AzureIoTHub;
+
+#if defined(ARDUINO_SAMD_FEATHER_M0)
+
+#define WINC_CS   8
+#define WINC_IRQ  7
+#define WINC_RST  4
+#define WINC_EN   2     // or, tie EN to VCC
+
+Adafruit_WINC1500 WiFi(WINC_CS, WINC_IRQ, WINC_RST);
+#endif
+
+void AzureIoTHubClass::begin(const char ssid[], const char password[])
+{
+#if defined(ARDUINO_ARCH_ESP8266)
+    Serial.setDebugOutput(true);
+#endif
+
+    setupWiFi(ssid, password);
+    syncTime();
+}
+
+void AzureIoTHubClass::setupWiFi(const char ssid[], const char password[])
+{
+#if defined(ARDUINO_SAMD_FEATHER_M0) && defined(WINC_EN)
+    pinMode(WINC_EN, OUTPUT);
+    digitalWrite(WINC_EN, HIGH);
+#endif
+
+#if defined(ARDUINO_ARCH_SAMD)
+    // check for the presence of the shield :
+    if (WiFi.status() == WL_NO_SHIELD) {
+        Serial.println("WiFi shield not present");
+        // don't continue:
+        while (true);
+    }
+#endif
+
+    Serial.print("Attempting to connect to SSID: ");
+    Serial.println(ssid);
+
+    // Connect to WPA/WPA2 network. Change this line if using open or WEP network:
+    while (WiFi.begin(ssid, password) != WL_CONNECTED) {
+        delay(500);
+        Serial.print(".");
+    }
+
+    Serial.println("Connected to wifi");
+}
+
+void AzureIoTHubClass::syncTime()
+{
+#if defined(ARDUINO_ARCH_SAMD)
+    time_t epochTime = (time_t)-1;
+
+    NTPClient ntpClient;
+    ntpClient.begin();
+
+    while (true) {
+        epochTime = ntpClient.getEpochTime("0.pool.ntp.org");
+
+        if (epochTime == (time_t)-1) {
+            Serial.println("Fetching NTP epoch time failed! Waiting 5 seconds to retry.");
+            delay(5000);
+        } else {
+            Serial.print("Fetched NTP epoch time is: ");
+            Serial.println(epochTime);
+            break;
+        }
+    }
+    
+    ntpClient.end();
+
+    struct timeval tv;
+    tv.tv_sec = epochTime;
+    tv.tv_usec = 0;
+
+    settimeofday(&tv, NULL);
+#elif defined(ARDUINO_ARCH_ESP8266)
+    time_t epochTime;
+
+    configTime(0, 0, "pool.ntp.org", "time.nist.gov");
+
+    while (true) {
+        epochTime = time(NULL);
+
+        if (epochTime == 0) {
+            Serial.println("Fetching NTP epoch time failed! Waiting 2 seconds to retry.");
+            delay(2000);
+        } else {
+            Serial.print("Fetched NTP epoch time is: ");
+            Serial.println(epochTime);
+            break;
+        }
+    }
+#endif
+}

keywords.txt

@@ -1,6 +1,9 @@
 // Copyright (c) Arduino. All rights reserved.
 // Licensed under the MIT license. See LICENSE file in the project root for full license information.
 
+#ifndef AZUREIOTHUB_H
+#define AZUREIOTHUB_H
+
 #include "sdk/lock.h"
 #include "sdk/threadapi.h"
 #include "sdk/serializer.h"
@@ -9,5 +12,20 @@
 #include "sdk/iothub_message.h"
 #include "sdk/iothubtransporthttp.h"
 
+#ifdef __cplusplus
+
+class AzureIoTHubClass
+{
+public:
+    void begin(const char ssid[], const char password[]);
+
+private:
+    void setupWiFi(const char ssid[], const char password[]);
+    void syncTime();
+};
+
+extern AzureIoTHubClass AzureIoTHub;
 
+#endif
 
+#endif