Import mbed-iot-connect and connect to mqtt server

devices_settings.h

+#ifndef __DEVICES_SETTINGS_H__
+#define __DEVICES_SETTINGS_H__
+
+#define ENTRY_EMBEST_CPID "617449FD62B649E7AD1050DB4E95096E"
+#define ENTRY_EMBEST_ENV "Avnet"
+#define ENTRY_EMBEST_COMPANY_NAME "Embest Tech"
+
+#define EMBEST_STM32L4_KIT_DEBUG_NAME "B-L4S5I-IOT01A(STM32L4+ Discovery kit) Debug 1"
+#define EMBEST_STM32L4_KIT_DEBUG_ID "B-L4S5I-IOT01A-DBG1"
+
+#endif

main.cpp

 #include "mbed.h"
 #include "mbed_trace.h"
 #include "NTPClient.h"
+#include "IoTConnectCommon.h"
+#include "IoTConnectClient.h"
+#include "IoTConnectHttpClient.h"
+#include "devices_settings.h"
 
 #define TRACE_GROUP  "Main"
 
 
 NetworkInterface* network = NULL;
 
+IoTConnectEntry embest(ENTRY_EMBEST_COMPANY_NAME, ENTRY_EMBEST_CPID, ENTRY_EMBEST_ENV);
+IoTConnectDevice* stm32_dev;
+IoTConnectClient* client = NULL;
+IoTConnectHttpClient* http_client = NULL;
+
 
 NetworkInterface* connect_network() {
     NetworkInterface* net = NULL;
@@ -65,6 +74,8 @@ int main() {
         printf("Mbed OS version %d.%d.%d\n\n", MBED_MAJOR_VERSION, MBED_MINOR_VERSION, MBED_PATCH_VERSION);
     #endif
 
+    stm32_dev = new IoTConnectDevice(EMBEST_STM32L4_KIT_DEBUG_ID, EMBEST_STM32L4_KIT_DEBUG_NAME, &embest);
+
   // Connect to network
     network = connect_network();
     if (network == NULL) {
@@ -77,5 +88,28 @@ int main() {
         return ret;
     }
 
+    http_client = new IoTConnectHttpClient(network, stm32_dev);
+    http_client->init_device_cfg();
+
+
+    client = new IoTConnectClient(network, stm32_dev);
+
+    ret = client->connect();
+    if (ret != 0) {
+        tr_error("Connect failed, exit");
+        return -1;
+    }
+    ret = client->subscribe(MQTT::QOS0);
+    if (ret != 0) {
+        tr_error("Failed to subscribe");
+        return -1;
+    }
+
+    ret = client->start_main_loop();
+    if (ret != 0) {
+        tr_error("Failed to start client thread main loop");
+        return -1;
+    }
+
     return 0;
 }
\ No newline at end of file

mbed-iot-connect.lib

+https://xterra2.avnet.com/embest/iotconnect/mbed/mbed-iot-connect.git/#50a4db10dfb43fe0940b4e2b5385093dcd4025f1

mbed_app.json

@@ -3,11 +3,14 @@
     ],
     "target_overrides": {
         "*": {
+            "rtos.main-thread-stack-size": 8192,
             "nsapi.default-wifi-security": "WPA_WPA2",
             "nsapi.default-wifi-ssid": "\"NETGEAR86\"",
             "nsapi.default-wifi-password": "\"raspberry\"",
             "mbed-trace.enable": 1,
             "mbed-trace.max-level": "TRACE_LEVEL_DEBUG",
+            "mbed-mqtt.max-connections": "5",
+            "mbed-mqtt.max-packet-size": "2048",
             "platform.stdio-baud-rate": 115200,
             "platform.stdio-convert-newlines": true