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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.
Display.hpp
- Committer:
- IanBenzMaxim
- Date:
- 2017-11-06
- Revision:
- 32:0a09505a656d
- Parent:
- 25:37ea43ff81be
File content as of revision 32:0a09505a656d:
/******************************************************************************* * Copyright (C) 2016 Maxim Integrated Products, Inc., All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included * in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. * * Except as contained in this notice, the name of Maxim Integrated * Products, Inc. shall not be used except as stated in the Maxim Integrated * Products, Inc. Branding Policy. * * The mere transfer of this software does not imply any licenses * of trade secrets, proprietary technology, copyrights, patents, * trademarks, maskwork rights, or any other form of intellectual * property whatsoever. Maxim Integrated Products, Inc. retains all * ownership rights. *******************************************************************************/ #ifndef DISPLAY_HPP #define DISPLAY_HPP #include <stdint.h> #include <stddef.h> #include <string> namespace mbed { class I2C; } /// Interface to the Newhaven Display NHD-C0220BiZ-FS(RGB)-FBW-3VM LCD module /// and MAX7306 PWM LED driver for backlight color selection. class Display { public: /// Display line referenced from top enum Line { FirstLine = 0, SecondLine }; /// 24-bit RGB color for the backlight. struct Color { uint8_t R, G, B; }; /// Length in character os a display line. static const size_t lineLength = 20; /// @param I2C_interface A configured I2C interface to use for communication. /// @param LCD_I2C_address LCD module bus address in mbed format. /// @param LED_driver_I2C_addr PWM LED driver (MAX7306) bus address in mbed format. Display(mbed::I2C & I2C_intf, uint8_t LCD_I2C_addr, uint8_t LED_driver_I2C_addr); /// Initialize display components. void initialize(); /// Clear all display lines. void clearDisplay(); /// Clear a specific display line. void clearLine(Line line); /// Write a single character to the display at the current cursor position. void writeCharacter(uint8_t character); /// Write text to the display at the current cursor position. void writeText(const std::string & text); /// Set cursor to a certain line and zero-index position within the line. void setCursorPosition(Line line, size_t position = 0); /// Writes text to the display starting at the beginning of the line. void writeLine(const std::string & text, Line line); /// Writes text to the display starting at the beginning of the line and /// clears the remainder of the line. void writeCompleteLine(const std::string & text, Line line); /// Writes a message to the display with text wrapping allowed at spaces. void writeMessage(const std::string & text); /// Set the display backlight to a certain color. void setBackLightColor(const Color & color); private: mbed::I2C & m_I2C_intf; uint8_t m_LCD_I2C_addr, m_LED_driver_I2C_addr; void initializeLCD(); void initializeLED_Driver(); }; #endif