├── .gitignore ├── LICENSE ├── Logger.cpp ├── Logger.h ├── README.md ├── RemoteRelay.ino └── docs ├── ESP8266+2-Road+WIFI+Relay.zip ├── board.jpg ├── datasheet-2way.pdf ├── datasheet-4way.pdf └── flashing-mode.jpg /.gitignore: -------------------------------------------------------------------------------- 1 | RemoteRelay.ino.generic.bin 2 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. 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It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | 635 | Copyright (C) 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | Copyright (C) 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | -------------------------------------------------------------------------------- /Logger.cpp: -------------------------------------------------------------------------------- 1 | /************************************************************************* 2 | * 3 | * This file is part of the Remoterelay Arduino sketch. 4 | * Copyleft 2017 Nicolas Agius 5 | * 6 | * This program is free software: you can redistribute it and/or modify 7 | * it under the terms of the GNU General Public License as published by 8 | * the Free Software Foundation, either version 3 of the License, or 9 | * (at your option) any later version. 10 | * 11 | * This program is distributed in the hope that it will be useful, 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 | * GNU General Public License for more details. 15 | * 16 | * You should have received a copy of the GNU General Public License 17 | * along with this program. If not, see . 18 | * 19 | * ***********************************************************************/ 20 | 21 | #include "Logger.h" 22 | 23 | Logger::Logger() 24 | { 25 | // Init ring log 26 | for (int i=0; i= RINGLOG_SIZE) 78 | index=0; 79 | } 80 | 81 | String Logger::getLog() 82 | { 83 | // Get uptime 84 | char uptime[9]; 85 | int sec = millis() / 1000; 86 | int min = sec / 60; 87 | int hour = min / 60; 88 | snprintf(uptime, sizeof(uptime), "%02d:%02d:%02d", hour, min % 60, sec % 60); 89 | 90 | // Generate header 91 | String msg = " ==== DEBUG LOG ===="; 92 | msg += "\r\nChip ID: "; 93 | msg += ESP.getChipId(); 94 | msg += "\r\nFree Heap: "; 95 | msg += ESP.getFreeHeap(); 96 | msg += "\r\nFlash Size: "; 97 | msg += ESP.getFlashChipSize(); 98 | msg += "\r\nUptime: "; 99 | msg += uptime; 100 | msg += "\r\nPrinting last "; 101 | msg += RINGLOG_SIZE; 102 | msg += " lines of the log:\r\n"; 103 | 104 | // Get most recent half of the ring 105 | for(int i=index; i 0) 108 | { 109 | msg += ringlog[i]; 110 | msg += "\r\n"; 111 | } 112 | } 113 | 114 | // Get older half of the ring 115 | for(int i=0; i 0) 118 | { 119 | msg += ringlog[i]; 120 | msg += "\r\n"; 121 | } 122 | } 123 | 124 | msg += " ==== END LOG ====\r\n"; 125 | 126 | if(enableSerial) 127 | Serial.print(msg); 128 | 129 | return msg; 130 | } 131 | -------------------------------------------------------------------------------- /Logger.h: -------------------------------------------------------------------------------- 1 | /************************************************************************* 2 | * 3 | * This file is part of the Remoterelay Arduino sketch. 4 | * Copyleft 2017 Nicolas Agius 5 | * 6 | * This program is free software: you can redistribute it and/or modify 7 | * it under the terms of the GNU General Public License as published by 8 | * the Free Software Foundation, either version 3 of the License, or 9 | * (at your option) any later version. 10 | * 11 | * This program is distributed in the hope that it will be useful, 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 | * GNU General Public License for more details. 15 | * 16 | * You should have received a copy of the GNU General Public License 17 | * along with this program. If not, see . 18 | * 19 | * ***********************************************************************/ 20 | 21 | #ifndef LOGGER_H 22 | #define LOGGER_H 23 | 24 | #include "Arduino.h" 25 | 26 | #define BUF_LEN 180 // Max length of each line of log 27 | #define RINGLOG_SIZE 100 // Max number of line in the ring log 28 | 29 | /** 30 | * This class provide a logging facility to print log messages on the 31 | * serial output and store the last ones in a ring buffer for further access. 32 | */ 33 | class Logger 34 | { 35 | private: 36 | 37 | char ringlog[RINGLOG_SIZE][BUF_LEN]; 38 | int index; 39 | bool enableDebug; 40 | bool enableSerial; 41 | 42 | public: 43 | 44 | Logger(); 45 | 46 | void info(const char *, ...); // Print and store message log 47 | void debug(const char *, ...); // Print and store message log if debug mode is enabled 48 | void setDebug(bool); // Enable debug mode 49 | void setSerial(bool); // Enable log output on serial port 50 | String getLog(void); // Return the current log 51 | 52 | private: 53 | 54 | void log(const char *, va_list); 55 | 56 | }; 57 | 58 | #endif // LOGGER_H 59 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # RemoteRelay 2 | RemoteRelay is an alternative ESP8266 firmware for the relay board made by LCTech-inc. 3 | 4 | ## The board 5 | 6 | This board is a two-way relay over WiFi in a compact form factor and with a 3.3v onboard regulator to power the ESP8266. 7 | Version 1.2 support four-way boards as well. 8 | 9 | ![LcTech board](docs/board.jpg) 10 | See http://www.chinalctech.com/cpzx/Programmer/Relay_Module/ 11 | 12 | You can usually find this cheap device on any chinese electronics retailer. 13 | 14 | ## Why another firmware ? 15 | 16 | This board is not using the ESP8266 to manage the relays but instead another onboard MCU. The ESP8266 module is just used as a WiFi interface with its default AT firmware. The two chips are using serial (115200-8-1) to communicate. 17 | 18 | The original user experience is pretty clunky and no really usable. On power up, the board start an access point you need to connect your phone to in order to send commands. This is only usefull for testing as it's isolated from your main network. 19 | 20 | To switch to station mode, you need to push a button on the board (S1), install an app on your phone and then use this app to feed your SSID and password to the board. The app will then display its IP. 21 | Once connected, you need to send a binary payload over a plain TCP socket. No HTTP, no protocol of any kind, just plain binary. 22 | 23 | For example, you can run this command from Linux to switch on the first relay : 24 | ``` 25 | echo -ne "\xA0\x01\x01\xA2" | nc 192.168.0.9 8080 26 | ``` 27 | 28 | There is no way to get a feedback of the current state of the relay (beside looking at the leds on the board). 29 | 30 | On power loss, the board switch back to access point and you have to push the S1 button again to reconnect. 31 | 32 | ### We can do better 33 | 34 | RemoteRelay is a replacement sketch to be loaded on the ESP8266. It provide a convenient configuration interface with a captive portal and a proper REST API over HTTP to control the relays. It also support authbasic authentication (but not https). 35 | All configuration is saved to resume operation after a power loss without any action. 36 | 37 | Note that the two button on the board are now useless. 38 | 39 | ## Tools installation 40 | 41 | The compilation of this sketch require the Arduino IDE with the ESP8266 libraries. 42 | 43 | Refer to the [Arduino core for ESP8266](https://github.com/esp8266/Arduino) for the installation steps. 44 | 45 | You may also need the esptool CLI, available on [Espressif website](https://github.com/espressif/esptool). 46 | 47 | ## Firmware compilation and upload 48 | 49 | First, the module need to be unplugged from the board and set up into the [flashing mode](docs/flashing-mode.jpg). 50 | 51 | In the Arduino IDE, open the RemoteRelay sketch. 52 | 53 | To install dependencies, go to 'Sketch' -> 'Include Library' -> 'Manage Library' and install this package : 54 | 55 | - WiFiManager 56 | 57 | In the 'Tools' menu, select the board 'Generic ESP8266 board' and set these settings : 58 | 59 | - Flash mode : QIO 60 | - Flash frequency: 40 Mhz 61 | - CPU Frequency: 80 Mhz 62 | - Flash size : 1M (64K SPIFFS) 63 | 64 | Then run 'Compile' and 'Upload'. 65 | 66 | If the ESP8266 module is not plugged into the same computer, you can also use the following command to upload the compiled binary : 67 | 68 | ``` 69 | esptool.py --port /dev/ttyAMA0 write_flash -fm qio 0x00000 RemoteRelay.ino.generic.bin 70 | ``` 71 | 72 | You can then put the module back on the board. 73 | 74 | ## Debug and monitor serial output 75 | 76 | Once the ESP8266 back on the board, you can listen to the UART for debugging by plugging your serial RX on the TX pin of the board. You will see the output of the RemoteRelay firmware. If you use a separate power supply for the board, don't forget to connect the ground together. 77 | 78 | The serial communication must be set to `115200 8N1`. Any serial console software will do the job : 79 | 80 | 81 | ``` 82 | minicom -D /dev/ttyAMA0 83 | ``` 84 | 85 | Example of boot message : 86 | 87 | ``` 88 | [0.042] RemoteRelay version 1.0 started. 89 | [0.042] Loaded settings from flash 90 | [0.043] Channel 1 switched to off 91 | [0.043] Channel 2 switched to off 92 | [6.866] Connected. IP address: 192.168.1.4 93 | [6.867] HTTP server started. 94 | ``` 95 | 96 | ## First boot and configuration 97 | 98 | On the first boot, the module will start an access point with a captive portal. Once you are connected to it you will be redirected to the configuration page to fill in the SSID and the key of your network. You can also specify here a login and password for the AuthBasic authentification (default no auth). 99 | 100 | After validation of the form, the module will connect to your Wifi. Check your DHCP's logs to get the ip (or listen to the debug log on the serial port). 101 | If the connection fails or if the password changes, the captive portal will be started again. 102 | 103 | ## Authentication 104 | 105 | RemoteRelay support HTTP Auth Basic authentication (but not https). 106 | 107 | By default, there is no login required. Everybody on your network will be able to control your relays. 108 | To enable authentication, set the login and password during the first boot on the configuration web page. You can also set it later by updating both settings `login` and `password` : 109 | 110 | ``` 111 | curl -X POST 'http://192.168.1.4/settings?login=admin&password=mysecret' 112 | ``` 113 | 114 | All settings are stored into flash and are persistent upon reboot and power loss. 115 | 116 | ### How to reset credentials 117 | 118 | If you loose the password, you can change it on the configuration web page. This page will be presented automatically at boot time if it cannot connect to the configured access point. 119 | 120 | The second option is to use the reset endpoint : 121 | 122 | ``` 123 | curl -X POST 'http://192.168.1.4/reset' 124 | ``` 125 | This will erase all settings and reboot the module. 126 | 127 | The last option is to completely wipe out the flash : 128 | 129 | ``` 130 | esptool.py --port /dev/ttyAMA0 erase_flash 131 | ``` 132 | 133 | You will need to re-upload the firmware after this operation. 134 | 135 | 136 | ## API definition 137 | 138 | - GET /channel/:id 139 | 140 | Show the current status of the channel number :id. :id need to be either the value 1 or 2. 141 | 142 | * Return "application/json" : 143 | 144 | ```json 145 | { 146 | "channel": "1", 147 | "mode": "off" 148 | } 149 | ``` 150 | 151 | - GET /settings 152 | 153 | Show the current settings, as stored in flash. See `POST /settings` for details on each parameter. 154 | 155 | * Return "application/json" : 156 | 157 | ```json 158 | { 159 | "login": "", 160 | "password": "", 161 | "debug": false, 162 | "serial": false 163 | } 164 | ``` 165 | 166 | - GET /debug 167 | 168 | Display device information and last 100 lines of the log. Can be quite verbose if debug mode is on. 169 | 170 | * Return "text/plain" : 171 | 172 | ``` 173 | ==== DEBUG LOG ==== 174 | Chip ID: 9342529 175 | Free Heap: 28080 176 | Flash Size: 1048576 177 | Uptime: 28:33:32 178 | Printing last 100 lines of the log: 179 | [0.042] RemoteRelay version 1.0 started. 180 | [0.042] Loaded settings from flash 181 | [0.043] Channel 1 switched to off 182 | [0.043] Channel 2 switched to off 183 | [6.866] Connected. IP address: 192.168.1.4 184 | [6.867] HTTP server started. 185 | [21.608] Channel 1 switched to off 186 | [22.735] Channel 2 switched to on 187 | ==== END LOG ==== 188 | ``` 189 | 190 | - PUT /channel/:id 191 | 192 | Switch on or off the channel number :id. This is volatile and won't be kept after a reboot. At boot time, the relays are turned off. 193 | 194 | * Parameters : 195 | 196 | - mode : *[on|off]* 197 | 198 | * Return : 199 | 200 | Return the same information as `GET /channel/:id`. 201 | 202 | * Example : 203 | 204 | ``` 205 | curl -X PUT -F "mode=off" http://192.168.1.4/channel/1 206 | ``` 207 | 208 | - POST /settings 209 | 210 | Update configuration settings. This is stored in flash and is kept after a power loss. 211 | 212 | * Parameters : 213 | 214 | - debug : *[bool]* Turn on extra logging. (default false) 215 | - serial : *[bool]* Turn on log output on serial port. (default false) 216 | - login : *[str]* Auth Basic login. (default empty) 217 | - password : *[str]* Auth Basic password. (default empty) 218 | 219 | * Return : 220 | 221 | Return the same information as `GET /settings`. 222 | 223 | * Examples : 224 | 225 | ``` 226 | curl -X POST -F 'login=admin' -F 'password=mysecret' http://192.168.1.4/settings 227 | curl -X POST -F 'debug=true' -u admin:mysecret http://192.168.1.4/settings 228 | ``` 229 | 230 | - POST /reset 231 | 232 | Erase both WiFi and AuthBasic settings and restart the module. USE WITH CAUTION: Some ESP8266 tend to crash after the reboot. 233 | 234 | * Return : 235 | 236 | No return. The connection will be lost as the module is rebooting. 237 | 238 | ## Issues 239 | 240 | Sometimes the ESP8266 reset when a relay is switched off. I couldn't find anything wrong with the code, the memory management or the watchdog. As this issue occurs only when the ESP8266 is connected to the relay board, I suspect some EMI on the relay release to be messing around with the power regulation of the board. Yes, there is a flyback diode. I tried to filter it with few capacitors here and there but no luck, I would need an oscilloscope to dig further... Any help welcome ! 241 | 242 | ## License 243 | 244 | Copyleft 2018 - Nicolas AGIUS - GNU GPLv3 245 | 246 | -------------------------------------------------------------------------------- /RemoteRelay.ino: -------------------------------------------------------------------------------- 1 | /************************************************************************* 2 | * 3 | * This file is part of the Remoterelay Arduino sketch. 4 | * Copyleft 2018 Nicolas Agius 5 | * 6 | * This program is free software: you can redistribute it and/or modify 7 | * it under the terms of the GNU General Public License as published by 8 | * the Free Software Foundation, either version 3 of the License, or 9 | * (at your option) any later version. 10 | * 11 | * This program is distributed in the hope that it will be useful, 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 | * GNU General Public License for more details. 15 | * 16 | * You should have received a copy of the GNU General Public License 17 | * along with this program. If not, see . 18 | * 19 | * ***********************************************************************/ 20 | 21 | 22 | #include 23 | #include 24 | #include 25 | #include // See https://github.com/tzapu/WiFiManager for documentation 26 | #include 27 | #include "Logger.h" 28 | 29 | // Default value 30 | #define DEFAULT_LOGIN "" // AuthBasic credentials 31 | #define DEFAULT_PASSWORD "" // (default no auth) 32 | #define FOUR_WAY_MODE // Enable channels 3 and 4 (comment out to disable) 33 | 34 | // Internal constant 35 | #define AUTHBASIC_LEN 21 // Login or password 20 char max 36 | #define BUF_SIZE 256 // Used for string buffers 37 | #define VERSION "1.2" 38 | #define MODE_ON 1 // See LC-Relay board datasheet for open/close values 39 | #define MODE_OFF 0 40 | 41 | struct ST_SETTINGS { 42 | bool debug; 43 | bool serial; 44 | char login[AUTHBASIC_LEN]; 45 | char password[AUTHBASIC_LEN]; 46 | }; 47 | 48 | struct ST_SETTINGS_FLAGS { 49 | bool debug; 50 | bool serial; 51 | bool login; 52 | bool password; 53 | }; 54 | 55 | // Global variables 56 | ESP8266WebServer server(80); 57 | Logger logger = Logger(); 58 | ST_SETTINGS settings; 59 | bool shouldSaveConfig = false; // Flag for WifiManager custom parameters 60 | char buffer[BUF_SIZE]; // Global char* to avoir multiple String concatenation which causes RAM fragmentation 61 | 62 | #ifndef FOUR_WAY_MODE 63 | uint8_t channels[] = { MODE_OFF, MODE_OFF }; 64 | #else 65 | uint8_t channels[] = { MODE_OFF, MODE_OFF, MODE_OFF, MODE_OFF }; 66 | #endif 67 | 68 | /** 69 | * HTTP route handlers 70 | ********************************************************************************/ 71 | 72 | /** 73 | * GET / 74 | */ 75 | void handleGETRoot() 76 | { 77 | // I always loved this HTTP code 78 | server.send(418, F("text/plain"), F("\ 79 | _ \r\n\ 80 | _,(_)._ \r\n\ 81 | ___,(_______). \r\n\ 82 | ,'__. \\ /\\_ \r\n\ 83 | /,' / \\ / / \r\n\ 84 | | | | |,' / \r\n\ 85 | \\`.| / \r\n\ 86 | `. : : / \r\n\ 87 | `. :.,' \r\n\ 88 | `-.________,-' \r\n\ 89 | \r\n")); 90 | } 91 | 92 | /** 93 | * GET /debug 94 | */ 95 | void handleGETDebug() 96 | { 97 | if(!isAuthBasicOK()) 98 | return; 99 | 100 | server.send(200, F("text/plain"), logger.getLog()); 101 | } 102 | 103 | /** 104 | * GET /settings 105 | */ 106 | void handleGETSettings() 107 | { 108 | if(!isAuthBasicOK()) 109 | return; 110 | 111 | server.send(200, F("application/json"), getJSONSettings()); 112 | } 113 | 114 | /** 115 | * POST /settings 116 | * Args : 117 | * - debug = 118 | * - login = 119 | * - password = 120 | */ 121 | void handlePOSTSettings() 122 | { 123 | ST_SETTINGS st; 124 | ST_SETTINGS_FLAGS isNew = { false, false, false, false }; 125 | 126 | if(!isAuthBasicOK()) 127 | return; 128 | 129 | // Check if args have been supplied 130 | if(server.args() == 0) 131 | { 132 | server.send(400, F("test/plain"), F("Invalid parameters\r\n")); 133 | return; 134 | } 135 | 136 | // Parse args 137 | for(uint8_t i=0; i 0 && strlen(settings.password) > 0) 294 | { 295 | if(!server.authenticate(settings.login, settings.password)) 296 | { 297 | server.requestAuthentication(); 298 | return false; 299 | } 300 | } 301 | return true; 302 | } 303 | 304 | char* getJSONSettings() 305 | { 306 | //Generate JSON 307 | snprintf(buffer, BUF_SIZE, "{ \"login\": \"%s\", \"password\": \"\", \"debug\": %s, \"serial\": %s }\r\n", 308 | settings.login, 309 | settings.debug ? "true" : "false", 310 | settings.serial ? "true" : "false" 311 | ); 312 | 313 | return buffer; 314 | } 315 | 316 | char* getJSONState(uint8_t channel) 317 | { 318 | //Generate JSON 319 | snprintf(buffer, BUF_SIZE, "{ \"channel\": \"%d\", \"mode\": \"%s\" }\r\n", 320 | channel, 321 | channels[channel - 1] == MODE_ON ? "on" : "off" 322 | ); 323 | 324 | return buffer; 325 | } 326 | 327 | 328 | /** 329 | * Flash memory helpers 330 | ********************************************************************************/ 331 | 332 | // CRC8 simple calculation 333 | // Based on https://github.com/PaulStoffregen/OneWire/blob/master/OneWire.cpp 334 | uint8_t crc8(const uint8_t *addr, uint8_t len) 335 | { 336 | uint8_t crc = 0; 337 | 338 | while (len--) { 339 | uint8_t inbyte = *addr++; 340 | for (uint8_t i = 8; i; i--) { 341 | uint8_t mix = (crc ^ inbyte) & 0x01; 342 | crc >>= 1; 343 | if (mix) crc ^= 0x8C; 344 | inbyte >>= 1; 345 | } 346 | } 347 | return crc; 348 | } 349 | 350 | void saveSettings() 351 | { 352 | uint8_t buffer[sizeof(settings) + 1]; // Use the last byte for CRC 353 | 354 | memcpy(buffer, &settings, sizeof(settings)); 355 | buffer[sizeof(settings)] = crc8(buffer, sizeof(settings)); 356 | 357 | for(int i=0; i < sizeof(buffer); i++) 358 | { 359 | EEPROM.write(i, buffer[i]); 360 | } 361 | EEPROM.commit(); 362 | } 363 | 364 | void loadSettings() 365 | { 366 | uint8_t buffer[sizeof(settings) + 1]; // Use the last byte for CRC 367 | 368 | for(int i=0; i < sizeof(buffer); i++) 369 | { 370 | buffer[i] = uint8_t(EEPROM.read(i)); 371 | } 372 | 373 | // Check CRC 374 | if(crc8(buffer, sizeof(settings)) == buffer[sizeof(settings)]) 375 | { 376 | memcpy(&settings, buffer, sizeof(settings)); 377 | logger.setDebug(settings.debug); 378 | logger.setSerial(settings.serial); 379 | logger.info("Loaded settings from flash"); 380 | 381 | // Display loaded setting on debug 382 | logger.debug("FLASH: %s", getJSONSettings()); 383 | } 384 | else 385 | { 386 | logger.info("Bad CRC, loading default settings."); 387 | setDefaultSettings(); 388 | saveSettings(); 389 | } 390 | } 391 | 392 | void setDefaultSettings() 393 | { 394 | strcpy(settings.login, DEFAULT_LOGIN); 395 | strcpy(settings.password, DEFAULT_PASSWORD); 396 | settings.debug = false; 397 | settings.serial = false; 398 | } 399 | 400 | 401 | /** 402 | * General helpers 403 | ********************************************************************************/ 404 | 405 | void setChannel(uint8_t channel, uint8_t mode) 406 | { 407 | byte payload[4]; 408 | 409 | // Header 410 | payload[0] = 0xA0; 411 | 412 | // Select the channel 413 | payload[1] = channel; 414 | 415 | // Set the mode 416 | // * 0 = open (off) 417 | // * 1 = close (on) 418 | payload[2] = mode; 419 | 420 | // Compute checksum 421 | payload[3] = payload[0] + payload[1] + payload[2]; 422 | 423 | // Save status 424 | channels[channel - 1] = mode; 425 | 426 | logger.info("Channel %i switched to %s", channel, (mode == MODE_ON) ? "on" : "off"); 427 | logger.debug("Sending payload %02X%02X%02X%02X", payload[0], payload[1], payload[2], payload[3]); 428 | 429 | // Give some time to the watchdog 430 | ESP.wdtFeed(); 431 | yield(); 432 | 433 | // Send hex payload 434 | Serial.write(payload, sizeof(payload)); 435 | 436 | if(settings.serial) 437 | Serial.println(""); // Clear the line for log output 438 | } 439 | 440 | void setup() 441 | { 442 | WiFiManager wifiManager; 443 | 444 | Serial.begin(115200); 445 | EEPROM.begin(512); 446 | logger.info("RemoteRelay version %s started.", VERSION); 447 | 448 | // Load settigns from flash 449 | loadSettings(); 450 | 451 | // Be sure the relay are in the default state (off) 452 | for(uint8_t i=0; i-1) 519 | Serial.println("OK"); 520 | 521 | if(stringIn.indexOf("AT+RST")>-1) 522 | { 523 | // pretend we reset (wait a bit then send the WiFi connected message) 524 | delay(1); 525 | Serial.println("WIFI CONNECTED\r\nWIFI GOT IP"); 526 | } 527 | } 528 | } 529 | } 530 | 531 | void loop() 532 | { 533 | server.handleClient(); 534 | fakeATFirmware(); 535 | } 536 | -------------------------------------------------------------------------------- /docs/ESP8266+2-Road+WIFI+Relay.zip: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/nagius/RemoteRelay/c7c290e9d18bcd1be543c74bdfdf6ea48649847a/docs/ESP8266+2-Road+WIFI+Relay.zip -------------------------------------------------------------------------------- /docs/board.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/nagius/RemoteRelay/c7c290e9d18bcd1be543c74bdfdf6ea48649847a/docs/board.jpg -------------------------------------------------------------------------------- /docs/datasheet-2way.pdf: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/nagius/RemoteRelay/c7c290e9d18bcd1be543c74bdfdf6ea48649847a/docs/datasheet-2way.pdf -------------------------------------------------------------------------------- /docs/datasheet-4way.pdf: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/nagius/RemoteRelay/c7c290e9d18bcd1be543c74bdfdf6ea48649847a/docs/datasheet-4way.pdf -------------------------------------------------------------------------------- /docs/flashing-mode.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/nagius/RemoteRelay/c7c290e9d18bcd1be543c74bdfdf6ea48649847a/docs/flashing-mode.jpg --------------------------------------------------------------------------------