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/MAX44009.hpp	Tue Apr 04 14:10:48 2017 -0500
+++ b/MAX44009.hpp	Mon Nov 06 17:34:13 2017 -0600
@@ -28,8 +28,7 @@
 * trademarks, maskwork rights, or any other form of intellectual
 * property whatsoever. Maxim Integrated Products, Inc. retains all
 * ownership rights.
-*******************************************************************************
-*/
+*******************************************************************************/
 
 #ifndef MAX44009_HPP
 #define MAX44009_HPP
@@ -39,31 +38,22 @@
 namespace mbed { class I2C; }
 
 /// Interface to the MAX44009 optical light sensor.
-class MAX44009
-{
+class MAX44009 {
 public:
-  enum Result
-  {
-    Success,
-    Hardware_Failure
-  };
-  
+  enum Result { Success, Hardware_Failure };
+
   /// @param I2C_interface A configured I2C interface to use for communication.
   /// @param I2C_address Device bus address in mbed format.
   MAX44009(mbed::I2C & I2C_interface, uint8_t I2C_address);
-  
+
   /// Read the current lux from the MAX44009.
   /// @returns Success or Hardware_Failure.
   Result read_current_lux(double & lux) const;
-  
+
 private:
   /// MAX44009 Register addresses.
-  enum Register
-  {
-    Lux_High_Byte_Reg = 0x03,
-    Lux_Low_Byte_Reg = 0x04
-  };
-  
+  enum Register { Lux_High_Byte_Reg = 0x03, Lux_Low_Byte_Reg = 0x04 };
+
   mbed::I2C & m_I2C_interface;
   uint8_t m_I2C_address;
 };