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.
Diff: main.cpp
- Revision:
- 15:8cc4cdea59da
- Parent:
- 8:594529956266
- Child:
- 16:6bce01c1dd90
--- a/main.cpp Mon Jun 06 10:49:15 2016 -0500 +++ b/main.cpp Wed Jun 15 13:28:59 2016 -0500 @@ -335,8 +335,10 @@ // Wait and try again wait_ms(webPostRetryIntervalMs); } + // Too many retry attempts else { + // Assume we have lost network connection nextStatus = ControllerHardwareError; break; } @@ -441,7 +443,7 @@ break; case ControllerHardwareError: - lcd.writeMessage("Controller Hardware Error"); + lcd.writeMessage("Controller Hardware Error: Check Wi-Fi"); lcd.setBackLightColor(Red); break;