Maxim Integrated / Mbed 2 deprecated DeepCover Embedded Security in IoT

MAXREFDES143#: DeepCover Embedded Security in IoT Authenticated Sensing & Notification

Dependencies:   MaximInterface mbed

The MAXREFDES143# is an Internet of Things (IoT) embedded security reference design, built to protect an industrial sensing node by means of authentication and notification to a web server. The hardware includes a peripheral module representing a protected sensor node monitoring operating temperature and remaining life of a filter (simulated through ambient light sensing) and an mbed shield representing a controller node responsible for monitoring one or more sensor nodes. The design is hierarchical with each controller node communicating data from connected sensor nodes to a web server that maintains a centralized log and dispatches notifications as necessary. The mbed shield contains a Wi-Fi module, a DS2465 coprocessor with 1-Wire® master function, an LCD, LEDs, and pushbuttons. The protected sensor node contains a DS28E15 authenticator, a DS7505 temperature sensor, and a MAX44009 light sensor. The mbed shield communicates to a web server by the onboard Wi-Fi module and to the protected sensor node with I2C and 1-Wire. The MAXREFDES143# is equipped with a standard shield connector for immediate testing using an mbed board such as the MAX32600MBED#. The simplicity of this design enables rapid integration into any star-topology IoT network requiring the heightened security with low overhead provided by the SHA-256 symmetric-key algorithm.

More information about the MAXREFDES143# is available on the Maxim Integrated website.

--- a/main.cpp	Fri Dec 16 20:14:05 2016 +0000
+++ b/main.cpp	Thu Jan 26 14:18:21 2017 -0600
@@ -40,7 +40,7 @@
 #include "Masters/DS2465/DS2465.h"
 #include "Display.hpp"
 #include "RomId/RomId.h"
-#include "ESP8266.hpp"
+#include "ESP8266Interface.h"
 #include "mbed.h"
 
 using OneWire::RomId;
@@ -77,6 +77,9 @@
 static const Display::Color Purple = { 0x6E, 0x25, 0x85 };
 /// @}
 
+static const char wifiSsid[] = "TWS iPhone";
+static const char wifiPassword[] = "maxim1234";
+
 /// @{
 /// Peripheral and pin definitions
 static Serial pc(USBTX, USBRX);
@@ -88,8 +91,10 @@
 static Display lcd(i2c, 0x78, 0x98);
 static DS2465 ds2465(i2c, 0x30);
 static SensorNode sensorNode(i2c, 0x90, 0x94, ds2465);
-static ESP8266 esp8266(D1, D0, D2, D3, 38400);
-static WebServerInterface webIntf(esp8266, &pc);
+static ESP8266Interface esp8266(D1, D0, true);
+static DigitalOut esp8266_RST(D2, 0);
+static DigitalOut esp8266_CH_PD(D3, 1);
+static WebServerInterface webIntf(esp8266);
 /// @}
 
 static bool useInvalidSecret = false; ///< Imitate an invalid controller when posting to web server.
@@ -133,7 +138,8 @@
       displayStatus(currentStatus);
       
       // Connect to Wifi network
-      result = webIntf.initialize();
+      esp8266_RST = 1;
+      result = (esp8266.connect(wifiSsid, wifiPassword, NSAPI_SECURITY_WPA2) == 0);
       
       // Read session ID
       if (result)