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/DS7505.cpp	Wed Apr 20 20:13:33 2016 +0000
+++ b/DS7505.cpp	Thu May 12 14:40:14 2016 -0500
@@ -32,7 +32,8 @@
 */
 
 #include "DS7505.hpp"
-#include "mbed.h"
+#include "I2C.h"
+#include "wait_api.h"
 
 #define I2C_WRITE 0
 #define I2C_READ 1
@@ -40,7 +41,7 @@
 static const int I2C_WRITE_OK = 0;
 static const uint8_t DS7505_Config_SD_Bit = 0x01; // Enable shutdown mode
 
-DS7505::DS7505(I2C & I2C_interface, uint8_t I2C_address)
+DS7505::DS7505(mbed::I2C & I2C_interface, uint8_t I2C_address)
   : m_current_config(Config_9b_Res, true), m_I2C_interface(I2C_interface), m_I2C_address(I2C_address)
 {
   
@@ -83,8 +84,8 @@
   sub_res = m_I2C_interface.write(m_I2C_address | I2C_READ);
   if (sub_res == I2C_WRITE_OK)
   {
-    upperByte = m_I2C_interface.read(I2C::ACK);
-    lowerByte = m_I2C_interface.read(I2C::NoACK);
+    upperByte = m_I2C_interface.read(mbed::I2C::ACK);
+    lowerByte = m_I2C_interface.read(mbed::I2C::NoACK);
   }
   m_I2C_interface.stop();
   if (sub_res == I2C_WRITE_OK)