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: DS7505.hpp
- Revision:
- 6:b6bafd0a7013
- Parent:
- 1:e1c7c1c636af
- Child:
- 13:6e753e78987c
--- a/DS7505.hpp Wed Apr 20 20:13:33 2016 +0000 +++ b/DS7505.hpp Thu May 12 14:40:14 2016 -0500 @@ -34,7 +34,7 @@ #ifndef _DS7505_HPP #define _DS7505_HPP -#include <cstdint> +#include <stdint.h> namespace mbed { @@ -54,11 +54,11 @@ /// @param I2C_interface A configured I2C interface to use for communication. /// @param I2C_address Device bus address in mbed format. - DS7505(mbed::I2C & I2C_interface, std::uint8_t I2C_address); + DS7505(mbed::I2C & I2C_interface, uint8_t I2C_address); /// Set the resolution for temperature conversions. /// @param resolution Number of decimal bit from 1 to 4. - Result set_resolution(std::uint8_t resolution); + Result set_resolution(uint8_t resolution); /// Reads the current temperature with an exponent of 10^-2. /// @note Compatible with Bluetooth characteristic: org.bluetooth.characteristic.temperature. @@ -103,21 +103,21 @@ mutable Config m_current_config; mbed::I2C & m_I2C_interface; - std::uint8_t m_I2C_address; + uint8_t m_I2C_address; /// Returns the maximum time needed in ms for a sample at the specified resolution. - static std::uint8_t get_measure_delay_ms(Config_Resolution resolution); + static uint8_t get_measure_delay_ms(Config_Resolution resolution); /// Reads the current temperature via I2C. /// Assumes that the I2C register pointer is already set to the temperature register. /// @param sensor_data Output for raw data from DS7505 with upper and lower bytes combined. /// @returns True on success. - bool read_temp_sensor_data(std::uint16_t & sensor_data) const; + bool read_temp_sensor_data(uint16_t & sensor_data) const; /// Reads the current temperature with support for shutdown mode. /// @param sensor_data Output for raw data from DS7505 with upper and lower bytes combined. /// @returns Success or Hardware_Failure. - Result read_temp_sensor(std::uint16_t & sensor_data) const; + Result read_temp_sensor(uint16_t & sensor_data) const; /// Sets the I2C register pointer for the next operation. /// @param pointer_reg Desired register to set. @@ -130,7 +130,7 @@ /// @param write_val Value to write to the register. /// @returns True on success. /// @note Allow marking const since not public - bool write_register(Register write_reg, std::uint8_t write_val) const; + bool write_register(Register write_reg, uint8_t write_val) const; /// Writes the current configuration via I2C. /// @returns True on success.