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: ESP8266.hpp
- Revision:
- 28:e5cdaf13d299
- Parent:
- 27:81a87d29bedd
- Child:
- 29:590a7561318b
--- a/ESP8266.hpp Fri Dec 16 20:14:05 2016 +0000
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,220 +0,0 @@
-/*******************************************************************************
-* 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 ESP8266_HPP
-#define ESP8266_HPP
-
-#include <string>
-#include <sstream>
-
-#include "PinNames.h"
-#include "Serial.h"
-#include "DigitalOut.h"
-#include "CircularBuffer.h"
-
-namespace mbed { class Serial; }
-
-/// Interface to the ESP8266 Wi-Fi module.
-class ESP8266
-{
-public:
- /// Result of sending an AT command.
- enum CmdResult
- {
- AT_OK = 1,
- AT_FAIL = 0,
- AT_ERROR = -1,
- HardwareError = -2,
- TimeoutError = -3
- };
-
- /// ESP8266 Wi-Fi mode.
- enum WifiMode
- {
- station_mode = 1,
- softAP_mode = 2,
- softAP_station_mode = 3
- };
-
- /// Connection type.
- enum ConnType
- {
- TCP,
- UDP
- };
-
- /// Recovery time between Send Data operation as specified by datasheet.
- static const unsigned int sendDataRecoveryTimeMs = 1000;
-
- /// Builds command strings for the ESP8266 with proper formatting.
- class CmdBuilder
- {
- public:
- /// @param cmd Command of the format "AT+[cmd]".
- CmdBuilder(const std::string & cmd = "");
-
- /// Clear all arguments.
- /// @param cmd Command of the format "AT+[cmd]".
- void clear(const std::string & cmd);
-
- /// Append an argument using the default string conversion for that type.
- /// @param arg Argument to append to the command.
- template <typename T> void addRawArgument(const T & arg)
- {
- cmdStream << ((numArgs == 0) ? "=" : ",") << arg;
- numArgs++;
- }
-
- /// Append a string argument with proper quoting.
- /// @param arg Argument to append to the command.
- void addStringArgument(const std::string & arg);
-
- /// Create a string suitable for use with sendCommand().
- /// @returns The formatted command string.
- std::string str() const;
-
- private:
- int numArgs;
- std::ostringstream cmdStream;
- };
-
- /// @{
- /// Default instance support for use with mbed Sockets.
- static void setDefaultInstance(ESP8266 * const instance);
- static ESP8266** getDefaultInstance();
- /// @}
-
- /// @param tx Transmit pin from mbed to ESP8266.
- /// @param rx Receive pin from ESP8266 to mbed.
- /// @param rst Reset pin on ESP8266.
- /// @param CH_PD Power-down pin on ESP8266.
- /// @param baud Baud rate that the ESP8266 is using.
- /// @param debugMsgIntf Optional serial interface for debugging messages.
- ESP8266(const PinName tx, const PinName rx, const PinName rst, const PinName CH_PD, const int baud, mbed::Serial * debugMsgIntf = NULL);
- ~ESP8266();
-
- /// Reset the ESP8266 via the hardware reset pin.
- void reset();
-
- // Update the baud rate for the ESP8266.
- void setBaud(int baud) { AT_intf.baud(baud); }
-
- /// @{
- /// Control if the ESP8266 is powered via the hardware power-down pin.
- bool powered() const;
- void setPowered(bool powered);
- /// @}
-
- /// Perform a self-test on the ESP8266.
- CmdResult performSelfTest();
-
- /// Set the current Wi-Fi mode.
- CmdResult setCurrentWifiMode(const WifiMode mode);
-
- /// Join a Wi-Fi access point.
- /// @param ssid Network SSID to connect to.
- /// @param pwd Network password.
- /// @param bssid Optional network BSSID.
- CmdResult joinCurrentAccessPoint(const std::string & ssid, const std::string & pwd, const std::string & bssid = "");
-
- /// Quit the current access point.
- CmdResult quitAccessPoint();
-
- /// Set the maximum WiFi tranmission power.
- /// @param power_dBm Power in dBm valid from 0 to 20.5 in 0.25 dBm increments.
- CmdResult setMaxRFTXPower(const float power_dBm);
-
- /// Ping a host via the current access point.
- /// @param IP IP address or resolvable hostname.
- CmdResult ping(const std::string & IP);
-
- /// Open a connection to a host via the current access point.
- /// @param type TCP or UPD connection.
- /// @param remoteIP IP address or resolvable hostname to connect to.
- /// @param remotePort Port on the host to connect to.
- CmdResult openConnection(const ConnType type, const std::string & remoteIP, const unsigned int remotePort);
-
- /// Close the connection to the current host.
- CmdResult closeConnection();
-
- /// Send data to the currently connected host.
- /// @param data May be in text or binary form.
- CmdResult sendData(const std::string & data);
-
- /// Send an AT command to the ESP8266.
- /// @param cmd Formatted command to send.
- CmdResult sendCommand(const CmdBuilder & cmd);
-
- /// Check if received IP data is available in the buffer.
- /// @note Allow some processing delay to happen between calls to this function.
- /// @returns True if data is available.
- bool recvIpDataReadable();
- /// Get the next character of received IP data from the buffer.
- char getcRecvIpData();
- /// Clear all received data from the buffer.
- void clearRecvData();
-
-private:
- static ESP8266 * defaultInstance; ///< Default instance support for use with mbed Sockets.
-
- mbed::Serial AT_intf;
- mbed::DigitalOut resetPin;
- mutable mbed::DigitalOut powerDownPin; ///< @note Mark as mutable for use in powered().
- mbed::CircularBuffer<char, 1024> recvIpDataBuffer; ///< Received IP data buffer.
- mbed::Serial * debugMsg;
- volatile bool parseRecvReset; ///< Indicates when AT interface received data parsers should be reset.
-
- /// Send raw AT data to the ESP8266.
- /// @param cmdString Data to send.
- /// @param expectEcho True if the ESP8266 will echo sent data back.
- CmdResult send_AT_data(const std::string & cmdString, const bool expectEcho);
-
- /// Attempts to read an entire line terminated with \r\n from the AT interface.
- /// \r will be preserved in the final string and \n will be stripped.
- /// @param line Buffer to store received characters in.
- /// @returns True if an entire line was read.
- bool read_line(std::string & line);
-
- /// Callback for when data is received on the AT interface.
- void recv_AT_data_cb();
- /// Parse the next character received on the AT interface checking for valid IP data.
- void parseRecvIpData(const char received);
- /// Parse the next character receive on the AT interface for the connection closed message.
- void parseRecvConnClosedMsg(const char received);
-
- /// Print a message on the debugging interface if setup.
- /// @param message Null terminated string.
- void printDbgMsg(const char * message);
-};
-
-#endif
\ No newline at end of file
MAXREFDES143#: DeepCover Embedded Security in IoT Authenticated Sensing & Notification