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.
ESP8266.cpp@30:0784010d6975, 2017-01-26 (annotated)
- Committer:
- IanBenzMaxim
- Date:
- Thu Jan 26 18:00:02 2017 -0600
- Revision:
- 30:0784010d6975
- Parent:
- 29:590a7561318b
- Child:
- 32:0a09505a656d
Removed unused functionality from ESP8266.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
IanBenzMaxim | 29:590a7561318b | 1 | /******************************************************************************* |
IanBenzMaxim | 29:590a7561318b | 2 | * Copyright (C) 2016 Maxim Integrated Products, Inc., All Rights Reserved. |
IanBenzMaxim | 29:590a7561318b | 3 | * |
IanBenzMaxim | 29:590a7561318b | 4 | * Permission is hereby granted, free of charge, to any person obtaining a |
IanBenzMaxim | 29:590a7561318b | 5 | * copy of this software and associated documentation files (the "Software"), |
IanBenzMaxim | 29:590a7561318b | 6 | * to deal in the Software without restriction, including without limitation |
IanBenzMaxim | 29:590a7561318b | 7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
IanBenzMaxim | 29:590a7561318b | 8 | * and/or sell copies of the Software, and to permit persons to whom the |
IanBenzMaxim | 29:590a7561318b | 9 | * Software is furnished to do so, subject to the following conditions: |
IanBenzMaxim | 29:590a7561318b | 10 | * |
IanBenzMaxim | 29:590a7561318b | 11 | * The above copyright notice and this permission notice shall be included |
IanBenzMaxim | 29:590a7561318b | 12 | * in all copies or substantial portions of the Software. |
IanBenzMaxim | 29:590a7561318b | 13 | * |
IanBenzMaxim | 29:590a7561318b | 14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
IanBenzMaxim | 29:590a7561318b | 15 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
IanBenzMaxim | 29:590a7561318b | 16 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
IanBenzMaxim | 29:590a7561318b | 17 | * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES |
IanBenzMaxim | 29:590a7561318b | 18 | * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
IanBenzMaxim | 29:590a7561318b | 19 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
IanBenzMaxim | 29:590a7561318b | 20 | * OTHER DEALINGS IN THE SOFTWARE. |
IanBenzMaxim | 29:590a7561318b | 21 | * |
IanBenzMaxim | 29:590a7561318b | 22 | * Except as contained in this notice, the name of Maxim Integrated |
IanBenzMaxim | 29:590a7561318b | 23 | * Products, Inc. shall not be used except as stated in the Maxim Integrated |
IanBenzMaxim | 29:590a7561318b | 24 | * Products, Inc. Branding Policy. |
IanBenzMaxim | 29:590a7561318b | 25 | * |
IanBenzMaxim | 29:590a7561318b | 26 | * The mere transfer of this software does not imply any licenses |
IanBenzMaxim | 29:590a7561318b | 27 | * of trade secrets, proprietary technology, copyrights, patents, |
IanBenzMaxim | 29:590a7561318b | 28 | * trademarks, maskwork rights, or any other form of intellectual |
IanBenzMaxim | 29:590a7561318b | 29 | * property whatsoever. Maxim Integrated Products, Inc. retains all |
IanBenzMaxim | 29:590a7561318b | 30 | * ownership rights. |
IanBenzMaxim | 29:590a7561318b | 31 | ******************************************************************************* |
IanBenzMaxim | 29:590a7561318b | 32 | */ |
IanBenzMaxim | 29:590a7561318b | 33 | |
IanBenzMaxim | 29:590a7561318b | 34 | #include <cstdlib> |
IanBenzMaxim | 29:590a7561318b | 35 | #include "ESP8266.hpp" |
IanBenzMaxim | 29:590a7561318b | 36 | #include "Timer.h" |
IanBenzMaxim | 29:590a7561318b | 37 | #include "wait_api.h" |
IanBenzMaxim | 29:590a7561318b | 38 | |
IanBenzMaxim | 29:590a7561318b | 39 | static inline void disableRecvData() |
IanBenzMaxim | 29:590a7561318b | 40 | { |
IanBenzMaxim | 29:590a7561318b | 41 | __disable_irq(); |
IanBenzMaxim | 29:590a7561318b | 42 | } |
IanBenzMaxim | 29:590a7561318b | 43 | |
IanBenzMaxim | 29:590a7561318b | 44 | static inline void enableRecvData() |
IanBenzMaxim | 29:590a7561318b | 45 | { |
IanBenzMaxim | 29:590a7561318b | 46 | __enable_irq(); |
IanBenzMaxim | 29:590a7561318b | 47 | } |
IanBenzMaxim | 29:590a7561318b | 48 | |
IanBenzMaxim | 29:590a7561318b | 49 | ESP8266::ESP8266(const PinName tx, const PinName rx, const PinName rst, const PinName CH_PD, const int baud, mbed::Serial * debugMsgIntf) |
IanBenzMaxim | 29:590a7561318b | 50 | : AT_intf(tx, rx), resetPin(rst), powerDownPin(CH_PD), debugMsg(debugMsgIntf), parseRecvReset(false) |
IanBenzMaxim | 29:590a7561318b | 51 | { |
IanBenzMaxim | 29:590a7561318b | 52 | AT_intf.baud(baud); |
IanBenzMaxim | 29:590a7561318b | 53 | AT_intf.attach(this, &ESP8266::recv_AT_data_cb); |
IanBenzMaxim | 29:590a7561318b | 54 | |
IanBenzMaxim | 29:590a7561318b | 55 | // Ensure that device is not held in reset |
IanBenzMaxim | 29:590a7561318b | 56 | if (resetPin.is_connected()) |
IanBenzMaxim | 29:590a7561318b | 57 | resetPin = 1; |
IanBenzMaxim | 29:590a7561318b | 58 | // Power down device at startup due to high current demand |
IanBenzMaxim | 29:590a7561318b | 59 | setPowered(false); |
IanBenzMaxim | 29:590a7561318b | 60 | } |
IanBenzMaxim | 29:590a7561318b | 61 | |
IanBenzMaxim | 29:590a7561318b | 62 | void ESP8266::reset() |
IanBenzMaxim | 29:590a7561318b | 63 | { |
IanBenzMaxim | 29:590a7561318b | 64 | if (resetPin.is_connected()) |
IanBenzMaxim | 29:590a7561318b | 65 | { |
IanBenzMaxim | 29:590a7561318b | 66 | resetPin = 0; |
IanBenzMaxim | 29:590a7561318b | 67 | wait_ms(100); |
IanBenzMaxim | 29:590a7561318b | 68 | resetPin = 1; |
IanBenzMaxim | 29:590a7561318b | 69 | wait_ms(1000); |
IanBenzMaxim | 29:590a7561318b | 70 | } |
IanBenzMaxim | 29:590a7561318b | 71 | } |
IanBenzMaxim | 29:590a7561318b | 72 | |
IanBenzMaxim | 29:590a7561318b | 73 | bool ESP8266::powered() const |
IanBenzMaxim | 29:590a7561318b | 74 | { |
IanBenzMaxim | 29:590a7561318b | 75 | bool isPowered; |
IanBenzMaxim | 29:590a7561318b | 76 | if (powerDownPin.is_connected()) |
IanBenzMaxim | 29:590a7561318b | 77 | { |
IanBenzMaxim | 29:590a7561318b | 78 | isPowered = powerDownPin.read(); |
IanBenzMaxim | 29:590a7561318b | 79 | } |
IanBenzMaxim | 29:590a7561318b | 80 | else |
IanBenzMaxim | 29:590a7561318b | 81 | { |
IanBenzMaxim | 29:590a7561318b | 82 | isPowered = false; |
IanBenzMaxim | 29:590a7561318b | 83 | } |
IanBenzMaxim | 29:590a7561318b | 84 | return isPowered; |
IanBenzMaxim | 29:590a7561318b | 85 | } |
IanBenzMaxim | 29:590a7561318b | 86 | |
IanBenzMaxim | 29:590a7561318b | 87 | void ESP8266::setPowered(bool powered) |
IanBenzMaxim | 29:590a7561318b | 88 | { |
IanBenzMaxim | 29:590a7561318b | 89 | if (powerDownPin.is_connected()) |
IanBenzMaxim | 29:590a7561318b | 90 | powerDownPin = powered; |
IanBenzMaxim | 29:590a7561318b | 91 | } |
IanBenzMaxim | 29:590a7561318b | 92 | |
IanBenzMaxim | 29:590a7561318b | 93 | ESP8266::CmdResult ESP8266::performSelfTest() |
IanBenzMaxim | 29:590a7561318b | 94 | { |
IanBenzMaxim | 29:590a7561318b | 95 | return sendCommand(CmdBuilder("")); |
IanBenzMaxim | 29:590a7561318b | 96 | } |
IanBenzMaxim | 29:590a7561318b | 97 | |
IanBenzMaxim | 29:590a7561318b | 98 | ESP8266::CmdResult ESP8266::setCurrentWifiMode(const ESP8266::WifiMode mode) |
IanBenzMaxim | 29:590a7561318b | 99 | { |
IanBenzMaxim | 29:590a7561318b | 100 | CmdBuilder builder("CWMODE_CUR"); |
IanBenzMaxim | 29:590a7561318b | 101 | builder.addRawArgument(mode); |
IanBenzMaxim | 29:590a7561318b | 102 | return sendCommand(builder); |
IanBenzMaxim | 29:590a7561318b | 103 | } |
IanBenzMaxim | 29:590a7561318b | 104 | |
IanBenzMaxim | 29:590a7561318b | 105 | ESP8266::CmdResult ESP8266::joinCurrentAccessPoint(const std::string & ssid, const std::string & pwd, const std::string & bssid) |
IanBenzMaxim | 29:590a7561318b | 106 | { |
IanBenzMaxim | 29:590a7561318b | 107 | CmdBuilder builder("CWJAP_CUR"); |
IanBenzMaxim | 29:590a7561318b | 108 | builder.addStringArgument(ssid); |
IanBenzMaxim | 29:590a7561318b | 109 | builder.addStringArgument(pwd); |
IanBenzMaxim | 29:590a7561318b | 110 | if (bssid != "") |
IanBenzMaxim | 29:590a7561318b | 111 | builder.addStringArgument(bssid); |
IanBenzMaxim | 29:590a7561318b | 112 | return sendCommand(builder); |
IanBenzMaxim | 29:590a7561318b | 113 | } |
IanBenzMaxim | 29:590a7561318b | 114 | |
IanBenzMaxim | 29:590a7561318b | 115 | ESP8266::CmdResult ESP8266::quitAccessPoint() |
IanBenzMaxim | 29:590a7561318b | 116 | { |
IanBenzMaxim | 29:590a7561318b | 117 | return sendCommand(CmdBuilder("CWQAP")); |
IanBenzMaxim | 29:590a7561318b | 118 | } |
IanBenzMaxim | 29:590a7561318b | 119 | |
IanBenzMaxim | 29:590a7561318b | 120 | ESP8266::CmdResult ESP8266::setMaxRFTXPower(const float power_dBm) |
IanBenzMaxim | 29:590a7561318b | 121 | { |
IanBenzMaxim | 29:590a7561318b | 122 | int power_arg = (int)(power_dBm * 4); |
IanBenzMaxim | 29:590a7561318b | 123 | if (power_arg > 82) |
IanBenzMaxim | 29:590a7561318b | 124 | power_arg = 82; |
IanBenzMaxim | 29:590a7561318b | 125 | else if (power_arg < 0) |
IanBenzMaxim | 29:590a7561318b | 126 | power_arg = 0; |
IanBenzMaxim | 29:590a7561318b | 127 | |
IanBenzMaxim | 29:590a7561318b | 128 | CmdBuilder builder("RFPOWER"); |
IanBenzMaxim | 29:590a7561318b | 129 | builder.addRawArgument(power_arg); |
IanBenzMaxim | 29:590a7561318b | 130 | return sendCommand(builder); |
IanBenzMaxim | 29:590a7561318b | 131 | } |
IanBenzMaxim | 29:590a7561318b | 132 | |
IanBenzMaxim | 29:590a7561318b | 133 | ESP8266::CmdResult ESP8266::ping(const std::string & IP) |
IanBenzMaxim | 29:590a7561318b | 134 | { |
IanBenzMaxim | 29:590a7561318b | 135 | CmdBuilder builder("PING"); |
IanBenzMaxim | 29:590a7561318b | 136 | builder.addStringArgument(IP); |
IanBenzMaxim | 29:590a7561318b | 137 | return sendCommand(builder); |
IanBenzMaxim | 29:590a7561318b | 138 | } |
IanBenzMaxim | 29:590a7561318b | 139 | |
IanBenzMaxim | 29:590a7561318b | 140 | ESP8266::CmdResult ESP8266::openConnection(const ESP8266::ConnType type, const std::string & remoteIP, const unsigned int remotePort) |
IanBenzMaxim | 29:590a7561318b | 141 | { |
IanBenzMaxim | 29:590a7561318b | 142 | CmdBuilder builder("CIPSTART"); |
IanBenzMaxim | 29:590a7561318b | 143 | builder.addStringArgument((type == TCP) ? "TCP" : "UDP"); |
IanBenzMaxim | 29:590a7561318b | 144 | builder.addStringArgument(remoteIP); |
IanBenzMaxim | 29:590a7561318b | 145 | builder.addRawArgument(remotePort); |
IanBenzMaxim | 29:590a7561318b | 146 | return sendCommand(builder); |
IanBenzMaxim | 29:590a7561318b | 147 | } |
IanBenzMaxim | 29:590a7561318b | 148 | |
IanBenzMaxim | 29:590a7561318b | 149 | ESP8266::CmdResult ESP8266::closeConnection() |
IanBenzMaxim | 29:590a7561318b | 150 | { |
IanBenzMaxim | 29:590a7561318b | 151 | return sendCommand(CmdBuilder("CIPCLOSE")); |
IanBenzMaxim | 29:590a7561318b | 152 | } |
IanBenzMaxim | 29:590a7561318b | 153 | |
IanBenzMaxim | 29:590a7561318b | 154 | ESP8266::CmdResult ESP8266::sendData(const std::string & data) |
IanBenzMaxim | 29:590a7561318b | 155 | { |
IanBenzMaxim | 29:590a7561318b | 156 | CmdBuilder builder("CIPSEND"); |
IanBenzMaxim | 29:590a7561318b | 157 | builder.addRawArgument(data.length()); |
IanBenzMaxim | 29:590a7561318b | 158 | ESP8266::CmdResult result = sendCommand(builder); |
IanBenzMaxim | 29:590a7561318b | 159 | if (result == ESP8266::AT_OK) |
IanBenzMaxim | 29:590a7561318b | 160 | result = send_AT_data(data, false); |
IanBenzMaxim | 29:590a7561318b | 161 | return result; |
IanBenzMaxim | 29:590a7561318b | 162 | } |
IanBenzMaxim | 29:590a7561318b | 163 | |
IanBenzMaxim | 29:590a7561318b | 164 | ESP8266::CmdResult ESP8266::sendCommand(const CmdBuilder & cmd) |
IanBenzMaxim | 29:590a7561318b | 165 | { |
IanBenzMaxim | 29:590a7561318b | 166 | return send_AT_data(cmd.str(), true); |
IanBenzMaxim | 29:590a7561318b | 167 | } |
IanBenzMaxim | 29:590a7561318b | 168 | |
IanBenzMaxim | 29:590a7561318b | 169 | bool ESP8266::recvIpDataReadable() |
IanBenzMaxim | 29:590a7561318b | 170 | { |
IanBenzMaxim | 29:590a7561318b | 171 | bool result; |
IanBenzMaxim | 29:590a7561318b | 172 | |
IanBenzMaxim | 29:590a7561318b | 173 | disableRecvData(); // Lock queue access |
IanBenzMaxim | 29:590a7561318b | 174 | |
IanBenzMaxim | 29:590a7561318b | 175 | result = !recvIpDataBuffer.empty(); |
IanBenzMaxim | 29:590a7561318b | 176 | |
IanBenzMaxim | 29:590a7561318b | 177 | enableRecvData(); // Unlock queue access |
IanBenzMaxim | 29:590a7561318b | 178 | |
IanBenzMaxim | 29:590a7561318b | 179 | return result; |
IanBenzMaxim | 29:590a7561318b | 180 | } |
IanBenzMaxim | 29:590a7561318b | 181 | |
IanBenzMaxim | 29:590a7561318b | 182 | char ESP8266::getcRecvIpData() |
IanBenzMaxim | 29:590a7561318b | 183 | { |
IanBenzMaxim | 29:590a7561318b | 184 | char received; |
IanBenzMaxim | 29:590a7561318b | 185 | |
IanBenzMaxim | 29:590a7561318b | 186 | disableRecvData(); // Lock queue access |
IanBenzMaxim | 29:590a7561318b | 187 | |
IanBenzMaxim | 29:590a7561318b | 188 | // Pop next char or set to NTC if not data in buffer |
IanBenzMaxim | 29:590a7561318b | 189 | if (!recvIpDataBuffer.pop(received)) |
IanBenzMaxim | 29:590a7561318b | 190 | received = '\0'; |
IanBenzMaxim | 29:590a7561318b | 191 | |
IanBenzMaxim | 29:590a7561318b | 192 | enableRecvData(); // Unlock queue access |
IanBenzMaxim | 29:590a7561318b | 193 | |
IanBenzMaxim | 29:590a7561318b | 194 | return received; |
IanBenzMaxim | 29:590a7561318b | 195 | } |
IanBenzMaxim | 29:590a7561318b | 196 | |
IanBenzMaxim | 29:590a7561318b | 197 | void ESP8266::clearRecvData() |
IanBenzMaxim | 29:590a7561318b | 198 | { |
IanBenzMaxim | 29:590a7561318b | 199 | disableRecvData(); // Lock queue access |
IanBenzMaxim | 29:590a7561318b | 200 | |
IanBenzMaxim | 29:590a7561318b | 201 | recvIpDataBuffer.reset(); |
IanBenzMaxim | 29:590a7561318b | 202 | parseRecvReset = true; |
IanBenzMaxim | 29:590a7561318b | 203 | |
IanBenzMaxim | 29:590a7561318b | 204 | enableRecvData(); // Unlock queue access |
IanBenzMaxim | 29:590a7561318b | 205 | } |
IanBenzMaxim | 29:590a7561318b | 206 | |
IanBenzMaxim | 29:590a7561318b | 207 | ESP8266::CmdResult ESP8266::send_AT_data(const std::string & cmdString, const bool expectEcho) |
IanBenzMaxim | 29:590a7561318b | 208 | { |
IanBenzMaxim | 29:590a7561318b | 209 | const int timeout_ms = 10000; |
IanBenzMaxim | 29:590a7561318b | 210 | |
IanBenzMaxim | 29:590a7561318b | 211 | mbed::Timer timer; |
IanBenzMaxim | 29:590a7561318b | 212 | ESP8266::CmdResult result = ESP8266::HardwareError; |
IanBenzMaxim | 29:590a7561318b | 213 | std::string response; |
IanBenzMaxim | 29:590a7561318b | 214 | |
IanBenzMaxim | 29:590a7561318b | 215 | disableRecvData(); // Lock for manual data handling in this procedure |
IanBenzMaxim | 29:590a7561318b | 216 | |
IanBenzMaxim | 29:590a7561318b | 217 | // Flush receive buffer |
IanBenzMaxim | 29:590a7561318b | 218 | while (AT_intf.readable()) |
IanBenzMaxim | 29:590a7561318b | 219 | AT_intf.getc(); |
IanBenzMaxim | 29:590a7561318b | 220 | |
IanBenzMaxim | 29:590a7561318b | 221 | // Begin counting for timeout |
IanBenzMaxim | 29:590a7561318b | 222 | timer.start(); |
IanBenzMaxim | 29:590a7561318b | 223 | |
IanBenzMaxim | 29:590a7561318b | 224 | for (size_t i = 0; i < cmdString.length(); i++) |
IanBenzMaxim | 29:590a7561318b | 225 | { |
IanBenzMaxim | 29:590a7561318b | 226 | // Write next character |
IanBenzMaxim | 29:590a7561318b | 227 | while (!AT_intf.writeable()) |
IanBenzMaxim | 29:590a7561318b | 228 | { |
IanBenzMaxim | 29:590a7561318b | 229 | if (timer.read_ms() > timeout_ms) |
IanBenzMaxim | 29:590a7561318b | 230 | { |
IanBenzMaxim | 29:590a7561318b | 231 | result = TimeoutError; |
IanBenzMaxim | 29:590a7561318b | 232 | goto exit; |
IanBenzMaxim | 29:590a7561318b | 233 | } |
IanBenzMaxim | 29:590a7561318b | 234 | } |
IanBenzMaxim | 29:590a7561318b | 235 | AT_intf.putc(cmdString[i]); |
IanBenzMaxim | 29:590a7561318b | 236 | // Wait for echo |
IanBenzMaxim | 29:590a7561318b | 237 | if (expectEcho && (cmdString[i] != '\r') && (cmdString[i] != '\n')) |
IanBenzMaxim | 29:590a7561318b | 238 | { |
IanBenzMaxim | 29:590a7561318b | 239 | while (!AT_intf.readable()) |
IanBenzMaxim | 29:590a7561318b | 240 | { |
IanBenzMaxim | 29:590a7561318b | 241 | if (timer.read_ms() > timeout_ms) |
IanBenzMaxim | 29:590a7561318b | 242 | { |
IanBenzMaxim | 29:590a7561318b | 243 | result = TimeoutError; |
IanBenzMaxim | 29:590a7561318b | 244 | goto exit; |
IanBenzMaxim | 29:590a7561318b | 245 | } |
IanBenzMaxim | 29:590a7561318b | 246 | } |
IanBenzMaxim | 29:590a7561318b | 247 | // Compare to written character |
IanBenzMaxim | 29:590a7561318b | 248 | if (AT_intf.getc() != cmdString[i]) |
IanBenzMaxim | 29:590a7561318b | 249 | { |
IanBenzMaxim | 29:590a7561318b | 250 | // Handle error |
IanBenzMaxim | 29:590a7561318b | 251 | result = ESP8266::HardwareError; |
IanBenzMaxim | 29:590a7561318b | 252 | goto exit; |
IanBenzMaxim | 29:590a7561318b | 253 | } |
IanBenzMaxim | 29:590a7561318b | 254 | } |
IanBenzMaxim | 29:590a7561318b | 255 | } |
IanBenzMaxim | 29:590a7561318b | 256 | |
IanBenzMaxim | 29:590a7561318b | 257 | while (result == ESP8266::HardwareError) |
IanBenzMaxim | 29:590a7561318b | 258 | { |
IanBenzMaxim | 29:590a7561318b | 259 | // Wait to receive something |
IanBenzMaxim | 29:590a7561318b | 260 | response.clear(); |
IanBenzMaxim | 29:590a7561318b | 261 | while (!read_line(response)) ; |
IanBenzMaxim | 29:590a7561318b | 262 | |
IanBenzMaxim | 29:590a7561318b | 263 | // Check if valid response |
IanBenzMaxim | 29:590a7561318b | 264 | if (response == "OK") |
IanBenzMaxim | 29:590a7561318b | 265 | result = ESP8266::AT_OK; |
IanBenzMaxim | 29:590a7561318b | 266 | else if (response == "FAIL") |
IanBenzMaxim | 29:590a7561318b | 267 | result = ESP8266::AT_FAIL; |
IanBenzMaxim | 29:590a7561318b | 268 | else if (response == "ERROR") |
IanBenzMaxim | 29:590a7561318b | 269 | result = ESP8266::AT_ERROR; |
IanBenzMaxim | 29:590a7561318b | 270 | else if (response == "SEND OK") // Used by AT+CIPSEND |
IanBenzMaxim | 29:590a7561318b | 271 | result = ESP8266::AT_OK; |
IanBenzMaxim | 29:590a7561318b | 272 | else if (response == "ALREADY CONNECT") // Used by AT+CIPSTART |
IanBenzMaxim | 29:590a7561318b | 273 | result = ESP8266::AT_OK; |
IanBenzMaxim | 29:590a7561318b | 274 | |
IanBenzMaxim | 29:590a7561318b | 275 | if (timer.read_ms() > timeout_ms) |
IanBenzMaxim | 29:590a7561318b | 276 | { |
IanBenzMaxim | 29:590a7561318b | 277 | result = TimeoutError; |
IanBenzMaxim | 29:590a7561318b | 278 | break; |
IanBenzMaxim | 29:590a7561318b | 279 | } |
IanBenzMaxim | 29:590a7561318b | 280 | } |
IanBenzMaxim | 29:590a7561318b | 281 | |
IanBenzMaxim | 29:590a7561318b | 282 | exit: |
IanBenzMaxim | 29:590a7561318b | 283 | enableRecvData(); // Enable interrupt processing |
IanBenzMaxim | 29:590a7561318b | 284 | return result; |
IanBenzMaxim | 29:590a7561318b | 285 | } |
IanBenzMaxim | 29:590a7561318b | 286 | |
IanBenzMaxim | 29:590a7561318b | 287 | bool ESP8266::read_line(std::string & line) |
IanBenzMaxim | 29:590a7561318b | 288 | { |
IanBenzMaxim | 29:590a7561318b | 289 | char received; |
IanBenzMaxim | 29:590a7561318b | 290 | |
IanBenzMaxim | 29:590a7561318b | 291 | while (AT_intf.readable()) |
IanBenzMaxim | 29:590a7561318b | 292 | { |
IanBenzMaxim | 29:590a7561318b | 293 | received = AT_intf.getc(); |
IanBenzMaxim | 29:590a7561318b | 294 | if (received == '\n') |
IanBenzMaxim | 29:590a7561318b | 295 | { |
IanBenzMaxim | 29:590a7561318b | 296 | return true; |
IanBenzMaxim | 29:590a7561318b | 297 | } |
IanBenzMaxim | 29:590a7561318b | 298 | else if (received != '\r') |
IanBenzMaxim | 29:590a7561318b | 299 | { |
IanBenzMaxim | 29:590a7561318b | 300 | line.push_back(received); |
IanBenzMaxim | 29:590a7561318b | 301 | } |
IanBenzMaxim | 29:590a7561318b | 302 | } |
IanBenzMaxim | 29:590a7561318b | 303 | return false; |
IanBenzMaxim | 29:590a7561318b | 304 | } |
IanBenzMaxim | 29:590a7561318b | 305 | |
IanBenzMaxim | 29:590a7561318b | 306 | void ESP8266::recv_AT_data_cb() |
IanBenzMaxim | 29:590a7561318b | 307 | { |
IanBenzMaxim | 29:590a7561318b | 308 | while (AT_intf.readable()) |
IanBenzMaxim | 29:590a7561318b | 309 | { |
IanBenzMaxim | 29:590a7561318b | 310 | char received = AT_intf.getc(); |
IanBenzMaxim | 29:590a7561318b | 311 | parseRecvIpData(received); |
IanBenzMaxim | 29:590a7561318b | 312 | parseRecvConnClosedMsg(received); |
IanBenzMaxim | 29:590a7561318b | 313 | parseRecvReset = false; |
IanBenzMaxim | 29:590a7561318b | 314 | } |
IanBenzMaxim | 29:590a7561318b | 315 | } |
IanBenzMaxim | 29:590a7561318b | 316 | |
IanBenzMaxim | 29:590a7561318b | 317 | void ESP8266::parseRecvIpData(const char received) |
IanBenzMaxim | 29:590a7561318b | 318 | { |
IanBenzMaxim | 29:590a7561318b | 319 | enum DataRecvState |
IanBenzMaxim | 29:590a7561318b | 320 | { |
IanBenzMaxim | 29:590a7561318b | 321 | Header, |
IanBenzMaxim | 29:590a7561318b | 322 | Length, |
IanBenzMaxim | 29:590a7561318b | 323 | Data, |
IanBenzMaxim | 29:590a7561318b | 324 | Reset |
IanBenzMaxim | 29:590a7561318b | 325 | }; |
IanBenzMaxim | 29:590a7561318b | 326 | |
IanBenzMaxim | 29:590a7561318b | 327 | static const char findChars[] = "+IPD,"; |
IanBenzMaxim | 29:590a7561318b | 328 | static const size_t maxSizeDigits = 4; |
IanBenzMaxim | 29:590a7561318b | 329 | |
IanBenzMaxim | 29:590a7561318b | 330 | static size_t dataFinishedSize = 0; |
IanBenzMaxim | 29:590a7561318b | 331 | static size_t index = 0; |
IanBenzMaxim | 29:590a7561318b | 332 | static char sizeDigits[] = { '\0', '\0', '\0', '\0', '\0' }; |
IanBenzMaxim | 29:590a7561318b | 333 | static DataRecvState state = Header; |
IanBenzMaxim | 29:590a7561318b | 334 | |
IanBenzMaxim | 29:590a7561318b | 335 | if (parseRecvReset) |
IanBenzMaxim | 29:590a7561318b | 336 | state = Reset; |
IanBenzMaxim | 29:590a7561318b | 337 | |
IanBenzMaxim | 29:590a7561318b | 338 | switch (state) |
IanBenzMaxim | 29:590a7561318b | 339 | { |
IanBenzMaxim | 29:590a7561318b | 340 | case Reset: |
IanBenzMaxim | 29:590a7561318b | 341 | default: |
IanBenzMaxim | 29:590a7561318b | 342 | index = 0; |
IanBenzMaxim | 29:590a7561318b | 343 | dataFinishedSize = 0; |
IanBenzMaxim | 29:590a7561318b | 344 | state = Header; |
IanBenzMaxim | 29:590a7561318b | 345 | // Continue processing switch |
IanBenzMaxim | 29:590a7561318b | 346 | |
IanBenzMaxim | 29:590a7561318b | 347 | case Header: |
IanBenzMaxim | 29:590a7561318b | 348 | if (received == findChars[index]) |
IanBenzMaxim | 29:590a7561318b | 349 | { |
IanBenzMaxim | 29:590a7561318b | 350 | if (findChars[++index] == '\0') |
IanBenzMaxim | 29:590a7561318b | 351 | { |
IanBenzMaxim | 29:590a7561318b | 352 | index = 0; |
IanBenzMaxim | 29:590a7561318b | 353 | state = Length; |
IanBenzMaxim | 29:590a7561318b | 354 | } |
IanBenzMaxim | 29:590a7561318b | 355 | } |
IanBenzMaxim | 29:590a7561318b | 356 | else |
IanBenzMaxim | 29:590a7561318b | 357 | { |
IanBenzMaxim | 29:590a7561318b | 358 | state = Reset; |
IanBenzMaxim | 29:590a7561318b | 359 | } |
IanBenzMaxim | 29:590a7561318b | 360 | break; |
IanBenzMaxim | 29:590a7561318b | 361 | |
IanBenzMaxim | 29:590a7561318b | 362 | case Length: |
IanBenzMaxim | 29:590a7561318b | 363 | if ((received <= '9') && (received >= '0')) |
IanBenzMaxim | 29:590a7561318b | 364 | { |
IanBenzMaxim | 29:590a7561318b | 365 | if (index < maxSizeDigits) |
IanBenzMaxim | 29:590a7561318b | 366 | { |
IanBenzMaxim | 29:590a7561318b | 367 | sizeDigits[index++] = received; |
IanBenzMaxim | 29:590a7561318b | 368 | } |
IanBenzMaxim | 29:590a7561318b | 369 | else |
IanBenzMaxim | 29:590a7561318b | 370 | { |
IanBenzMaxim | 29:590a7561318b | 371 | state = Reset; |
IanBenzMaxim | 29:590a7561318b | 372 | } |
IanBenzMaxim | 29:590a7561318b | 373 | } |
IanBenzMaxim | 29:590a7561318b | 374 | else if (received == ':') |
IanBenzMaxim | 29:590a7561318b | 375 | { |
IanBenzMaxim | 29:590a7561318b | 376 | dataFinishedSize = std::atoi(sizeDigits); |
IanBenzMaxim | 29:590a7561318b | 377 | if (dataFinishedSize == 0) |
IanBenzMaxim | 29:590a7561318b | 378 | { |
IanBenzMaxim | 29:590a7561318b | 379 | state = Reset; |
IanBenzMaxim | 29:590a7561318b | 380 | } |
IanBenzMaxim | 29:590a7561318b | 381 | else |
IanBenzMaxim | 29:590a7561318b | 382 | { |
IanBenzMaxim | 29:590a7561318b | 383 | index = 0; |
IanBenzMaxim | 29:590a7561318b | 384 | state = Data; |
IanBenzMaxim | 29:590a7561318b | 385 | } |
IanBenzMaxim | 29:590a7561318b | 386 | } |
IanBenzMaxim | 29:590a7561318b | 387 | else |
IanBenzMaxim | 29:590a7561318b | 388 | { |
IanBenzMaxim | 29:590a7561318b | 389 | state = Reset; |
IanBenzMaxim | 29:590a7561318b | 390 | } |
IanBenzMaxim | 29:590a7561318b | 391 | break; |
IanBenzMaxim | 29:590a7561318b | 392 | |
IanBenzMaxim | 29:590a7561318b | 393 | case Data: |
IanBenzMaxim | 29:590a7561318b | 394 | if (index < dataFinishedSize) |
IanBenzMaxim | 29:590a7561318b | 395 | { |
IanBenzMaxim | 29:590a7561318b | 396 | recvIpDataBuffer.push(received); |
IanBenzMaxim | 29:590a7561318b | 397 | index++; |
IanBenzMaxim | 29:590a7561318b | 398 | } |
IanBenzMaxim | 29:590a7561318b | 399 | else |
IanBenzMaxim | 29:590a7561318b | 400 | { |
IanBenzMaxim | 29:590a7561318b | 401 | state = Reset; |
IanBenzMaxim | 29:590a7561318b | 402 | } |
IanBenzMaxim | 29:590a7561318b | 403 | break; |
IanBenzMaxim | 29:590a7561318b | 404 | }; |
IanBenzMaxim | 29:590a7561318b | 405 | } |
IanBenzMaxim | 29:590a7561318b | 406 | |
IanBenzMaxim | 29:590a7561318b | 407 | void ESP8266::parseRecvConnClosedMsg(const char received) |
IanBenzMaxim | 29:590a7561318b | 408 | { |
IanBenzMaxim | 29:590a7561318b | 409 | static const char findChars[] = "CLOSED"; |
IanBenzMaxim | 29:590a7561318b | 410 | |
IanBenzMaxim | 29:590a7561318b | 411 | static int index = 0; |
IanBenzMaxim | 29:590a7561318b | 412 | |
IanBenzMaxim | 29:590a7561318b | 413 | bool shouldReset = parseRecvReset; |
IanBenzMaxim | 29:590a7561318b | 414 | |
IanBenzMaxim | 29:590a7561318b | 415 | if (received == findChars[index]) |
IanBenzMaxim | 29:590a7561318b | 416 | { |
IanBenzMaxim | 29:590a7561318b | 417 | if (findChars[++index] == '\0') |
IanBenzMaxim | 29:590a7561318b | 418 | { |
IanBenzMaxim | 29:590a7561318b | 419 | printDbgMsg(findChars); |
IanBenzMaxim | 29:590a7561318b | 420 | shouldReset = true; |
IanBenzMaxim | 29:590a7561318b | 421 | } |
IanBenzMaxim | 29:590a7561318b | 422 | } |
IanBenzMaxim | 29:590a7561318b | 423 | else |
IanBenzMaxim | 29:590a7561318b | 424 | { |
IanBenzMaxim | 29:590a7561318b | 425 | shouldReset = true; |
IanBenzMaxim | 29:590a7561318b | 426 | } |
IanBenzMaxim | 29:590a7561318b | 427 | |
IanBenzMaxim | 29:590a7561318b | 428 | if (shouldReset) |
IanBenzMaxim | 29:590a7561318b | 429 | { |
IanBenzMaxim | 29:590a7561318b | 430 | index = 0; |
IanBenzMaxim | 29:590a7561318b | 431 | } |
IanBenzMaxim | 29:590a7561318b | 432 | } |
IanBenzMaxim | 29:590a7561318b | 433 | |
IanBenzMaxim | 29:590a7561318b | 434 | void ESP8266::printDbgMsg(const char * message) |
IanBenzMaxim | 29:590a7561318b | 435 | { |
IanBenzMaxim | 29:590a7561318b | 436 | if (debugMsg != NULL) |
IanBenzMaxim | 29:590a7561318b | 437 | debugMsg->printf("%s", message); |
IanBenzMaxim | 29:590a7561318b | 438 | } |
IanBenzMaxim | 29:590a7561318b | 439 | |
IanBenzMaxim | 29:590a7561318b | 440 | ESP8266::CmdBuilder::CmdBuilder(const std::string & cmd) |
IanBenzMaxim | 29:590a7561318b | 441 | { |
IanBenzMaxim | 29:590a7561318b | 442 | clear(cmd); |
IanBenzMaxim | 29:590a7561318b | 443 | } |
IanBenzMaxim | 29:590a7561318b | 444 | |
IanBenzMaxim | 29:590a7561318b | 445 | void ESP8266::CmdBuilder::clear(const std::string & cmd) |
IanBenzMaxim | 29:590a7561318b | 446 | { |
IanBenzMaxim | 29:590a7561318b | 447 | numArgs = 0; |
IanBenzMaxim | 29:590a7561318b | 448 | cmdStream.str(""); |
IanBenzMaxim | 29:590a7561318b | 449 | |
IanBenzMaxim | 29:590a7561318b | 450 | cmdStream << "AT"; |
IanBenzMaxim | 29:590a7561318b | 451 | if (cmd != "") |
IanBenzMaxim | 29:590a7561318b | 452 | cmdStream << "+" << cmd; |
IanBenzMaxim | 29:590a7561318b | 453 | } |
IanBenzMaxim | 29:590a7561318b | 454 | |
IanBenzMaxim | 29:590a7561318b | 455 | void ESP8266::CmdBuilder::addStringArgument(const std::string & arg) |
IanBenzMaxim | 29:590a7561318b | 456 | { |
IanBenzMaxim | 29:590a7561318b | 457 | std::ostringstream argStream; |
IanBenzMaxim | 29:590a7561318b | 458 | argStream << "\"" << arg << "\""; |
IanBenzMaxim | 29:590a7561318b | 459 | addRawArgument<std::string>(argStream.str()); |
IanBenzMaxim | 29:590a7561318b | 460 | } |
IanBenzMaxim | 29:590a7561318b | 461 | |
IanBenzMaxim | 29:590a7561318b | 462 | std::string ESP8266::CmdBuilder::str() const |
IanBenzMaxim | 29:590a7561318b | 463 | { |
IanBenzMaxim | 29:590a7561318b | 464 | std::string cmdString = cmdStream.str(); |
IanBenzMaxim | 29:590a7561318b | 465 | cmdString.append("\r\n"); |
IanBenzMaxim | 29:590a7561318b | 466 | return cmdString; |
IanBenzMaxim | 29:590a7561318b | 467 | } |