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/ESP8266.hpp	Thu Jan 26 16:55:23 2017 -0600
+++ b/ESP8266.hpp	Thu Jan 26 18:00:02 2017 -0600
@@ -108,12 +108,6 @@
     std::ostringstream cmdStream;
-  /// @{
-  /// Default instance support for use with mbed Sockets.
-  static void setDefaultInstance(ESP8266 * const instance);
-  static ESP8266** getDefaultInstance();
-  /// @}
   /// @param tx Transmit pin from mbed to ESP8266.
   /// @param rx Receive pin from ESP8266 to mbed.
   /// @param rst Reset pin on ESP8266.
@@ -121,7 +115,6 @@
   /// @param baud Baud rate that the ESP8266 is using.
   /// @param debugMsgIntf Optional serial interface for debugging messages.
   ESP8266(const PinName tx, const PinName rx, const PinName rst, const PinName CH_PD, const int baud, mbed::Serial * debugMsgIntf = NULL);
-  ~ESP8266();
   /// Reset the ESP8266 via the hardware reset pin.
   void reset();
@@ -184,9 +177,7 @@
   /// Clear all received data from the buffer.
   void clearRecvData();
-  static ESP8266 * defaultInstance; ///< Default instance support for use with mbed Sockets.
   mbed::Serial AT_intf;
   mbed::DigitalOut resetPin;
   mutable mbed::DigitalOut powerDownPin; ///< @note Mark as mutable for use in powered().