/* General Purpose Webserver adjusted for Olimex ESP32-PoE board. It can control Olimex modules: MOD-IO; MOD-LCD 4.3"; MOD-LTR501; MOD-BME280, MOD-IRDA, MOD-RFID1356-MIFARE. This sketch requires Arduino for ESP32 - how to install it read here: https://github.com/espressif/arduino-esp32 This project is based on the one created by David Bird. The original can be found and downloaded here: https://github.com/G6EJD/ESP32-General-Purpose-Webserver The MIT License (MIT) Copyright (c) 2017 by David Bird. ### The formulation and calculation method of an IAQ - Internal Air Quality index ### ### The provision of a general purpose webserver ### 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, but not to use it commercially for profit making or to sub-license and/or to sell copies of the Software or 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 THE AUTHORS OR COPYRIGHT HOLDERS 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. See more at http://dsbird.org.uk */ //################# LIBRARIES ################ #include #include #include #include //https://github.com/Pedroalbuquerque/ESP32WebServer download and place in your Libraries folder #include "Adafruit_BME280.h" // search in library packages of Arduino for: "Adafruit BME280 Library" and install it #include // https://github.com/z3t0/Arduino-IRremote #include enum UART_Modules_Type { NONE = 0, MOD_IRDA, MOD_RFID_MIFARE, MOD_LCD }; //################ VARIABLES ################ const char* ssid = "OlimexTenda"; // WiFi SSID const char* password = "0pen5ourceHardware"; // WiFi Password String siteheading = "ESP32-PoE"; // Site's Main Title String sitetitle = "ESP32-PoE Webserver"; // Appears on the tabe of a Web Browser String yourfootnote = "Olimex demo for ESP32-PoE"; // A foot note e.g. "My Web Site" String siteversion = "v1.3"; // Version of your Website #define sitewidth 1024 // Adjust site page width in pixels as required #define SEALEVELPRESSURE_HPA (1013.25) // required for MOD-BME280 int MOD_IRDA_RECV_PIN = 36; UART_Modules_Type Active_UART_Module = NONE; Adafruit_BME280 bme; // I2C IRrecv irrecv(MOD_IRDA_RECV_PIN); decode_results MOD_IRDA_results; const char MOD_IRDA_Decode_Type [][16] = {"UNUSED", "RC5", "RC6", "NEC", "SONY", "PANASONIC", "JVC", "SAMSUNG", "WHYNTER", "AIWA_RC_T501", "LG", "SANYO", "MITSUBISHI", "DISH", "SHARP", "DENON", "PRONTO", "LEGO_PF"}; String webpage = ""; // General purpose variable to hold HTML code ESP32WebServer server(80); // Start server on port 80 (default for a web-browser, change to your requirements, e.g. 8080 perhaps, if your Router uses port 80 // To access server from outside of a WiFi (LAN) network e.g. on port 8080 add a rule on your Router that forwards a connection request // to http://your_network_WAN_address:8080 to http://your_network_LAN_address:8080 and then you can view your ESP server from anywhere. // Example http://yourhome.ip:8080 and your ESP Server is at 192.168.0.40, then the request will be directed to http://192.168.0.40:8080 #define BUTTON_PRESSED() (!digitalRead (34)) void MOD_IO_SetRelay (int Value) { Wire.beginTransmission(0x58); Wire.write(0x10); Wire.write(Value); Wire.endTransmission(); } void MOD_LTR501_Write(unsigned char reg, unsigned char data) { Wire.beginTransmission(0x23); Wire.write(reg); Wire.write(data); Wire.endTransmission(); } unsigned char MOD_LTR501_Read(unsigned char reg) { unsigned char data; Wire.beginTransmission(0x23); Wire.write(reg); Wire.endTransmission(); Wire.requestFrom(0x23, 1); while(Wire.available()) data = Wire.read(); return data; } int MOD_LTR501_Available (void) { if(MOD_LTR501_Read(0x86) == 0x80) return 1; else return 0; } char MOD_IRDA_Type[16]=" ", MOD_IRDA_Code[10]=" "; void MOD_IRDA_loop_Routine() { if (Active_UART_Module == MOD_IRDA) { if (irrecv.decode(&MOD_IRDA_results)) { if ((MOD_IRDA_results.decode_type != UNKNOWN) && (MOD_IRDA_results.value != 0xFFFFFFFF)) { sprintf (MOD_IRDA_Type, MOD_IRDA_Decode_Type[MOD_IRDA_results.decode_type]); sprintf (MOD_IRDA_Code, "%X", MOD_IRDA_results.value); } irrecv.resume(); // Receive the next value } } } void AJAX_Data_Function() { static char MOD_MIFARE_Text_Output[32+1]=""; static char MOD_LCD_Text_Output[256+1]=""; /* server responds 200 with a json payload */ /* although preferably concatenate your real sensor data here */ String message="{"; // MOD-BME if (bme.begin(0x76)) { message += "\"BME_s\": "; message += "\"Connected\""; message += ", \"BME_t\": "; message += bme.readTemperature(); message += ", \"BME_p\": "; message += bme.readPressure()/100.0F; message += ", \"BME_a\": "; message += bme.readAltitude(SEALEVELPRESSURE_HPA); message += ", \"BME_h\": "; message += bme.readHumidity(); } else { message += "\"BME_s\": "; message += "\"Disconnected\""; message += ", \"BME_t\": "; message += 0; message += ", \"BME_p\": "; message += 0; message += ", \"BME_a\": "; message += 0; message += ", \"BME_h\": "; message += 0; } // MOD-LTR static unsigned int ADC_0=0, ADC_1=0, LTR_PS=0; static float distance=0; if (MOD_LTR501_Available()) { int stat; MOD_LTR501_Write(0x80, 0x03); //Active mode, 64k lux range MOD_LTR501_Write(0x81, 0x03); //PS active mode, x1 GAIN MOD_LTR501_Write(0x82, 0x6B); //LED 60Hz, 50% duty, 50mA MOD_LTR501_Write(0x83, 0x7F); //127 pulses MOD_LTR501_Write(0x84, 0x02); //PS 100ms measure rate MOD_LTR501_Write(0x85, 0x03); //ALS Integration 100ms, repeat rate 500ms stat = MOD_LTR501_Read(0x8C); if (stat & 0x04) { unsigned char data[4]; for(int i = 0; i < 4; i++) { data[i] = MOD_LTR501_Read(0x88 + i); } ADC_0 = (data[3] << 8) | data[2]; ADC_1 = (data[1] << 8) | data[0]; } if(stat & 0x01) { //PS new data unsigned char data[2]; for(int i = 0; i < 2; i++) { data[i] = MOD_LTR501_Read(0x8D + i); } LTR_PS = (data[1] << 8) | data[0]; distance = 10 -(10.0/2047)*LTR_PS; } message += ", \"LTR_s\": "; message += "\"Connected\""; message += ", \"LTR_a0\": "; message += ADC_0; message += ", \"LTR_a1\": "; message += ADC_1; message += ", \"LTR_d\": "; message += distance; } else { message += ", \"LTR_s\": "; message += "\"Disconnected\""; message += ", \"LTR_a0\": "; message += 0; message += ", \"LTR_a1\": "; message += 0; message += ", \"LTR_d\": "; message += 0; } // MOD-IrDA if (Active_UART_Module == MOD_IRDA) { message += ", \"IRDA_s\": "; message += "\"Connected\""; message += ", \"IRDA_t\": "; message += "\""; message += MOD_IRDA_Type; message += "\""; message += ", \"IRDA_c\": "; message += "\""; message += MOD_IRDA_Code; message += "\""; } else { message += ", \"IRDA_s\": "; message += "\"Disconnected\""; message += ", \"IRDA_t\": "; message += "\"\""; message += ", \"IRDA_c\": "; message += "\"\""; } // MOD-MIFARE if (Active_UART_Module == MOD_RFID_MIFARE) { int i=0, Flag=0; if (Serial2.available () > 0) { while (Serial2.available () > 0) { char TempChar; TempChar = (char)Serial2.read(); if ((TempChar == '\n') || (TempChar == '\r')) { MOD_MIFARE_Text_Output[i] = 0; Flag = 0; } if (Flag) { if (i<32) MOD_MIFARE_Text_Output[i++] = TempChar; } if (TempChar == '-') { i = 0; Flag = 1; } } MOD_MIFARE_Text_Output[i] = 0; } message += ", \"MIFARE_s\": "; message += "\"Connected\""; message += ", \"MIFARE_d\": "; message += "\""; message += MOD_MIFARE_Text_Output; message += "\""; } else { MOD_MIFARE_Text_Output[0] = 0; message += ", \"MIFARE_s\": "; message += "\"Disconnected\""; message += ", \"MIFARE_d\": "; message += "\"\""; } // MOD-LCD if (Active_UART_Module == MOD_LCD) { int i=0; if (Serial2.available () > 0) { while (Serial2.available () > 0) { char TempChar; TempChar = (char)Serial2.read(); if (i>250) // 255 is the maximum of buffer continue; switch (TempChar) { case '\r': break; case '\n': MOD_LCD_Text_Output[i++] = '\\'; MOD_LCD_Text_Output[i++] = 'n'; break; case '"': MOD_LCD_Text_Output[i++] = '\\'; MOD_LCD_Text_Output[i++] = '"'; break; default: MOD_LCD_Text_Output[i++] = TempChar; break; } } MOD_LCD_Text_Output[i] = 0; } message += ", \"LCD_s\": "; message += "\"Connected\""; message += ", \"LCD_o\": "; message += "\""; message += MOD_LCD_Text_Output; message += "\""; } else { MOD_LCD_Text_Output[0] = 0; message += ", \"LCD_s\": "; message += "\"Disconnected\""; message += ", \"LCD_o\": "; message += "\"\""; } message += "}"; server.send(200, "application/json",message); } void setup() { Serial.begin(115200); // initialize serial communications Serial2.begin (115200, SERIAL_8N1, 36, 4, false); // UEXT UART Wire.begin (13, 16); // SPP Serial.println("Connect your I2C sensors to the default SDA, SCL pins for your board shown here:"); Serial.println("I2C SDA pin = " + String(SDA)); Serial.println("I2C SCL pin = " + String(SCL)); // Connect I2C sensors to the default SDA and SCL pins! Check Serial port for details StartWiFi(ssid, password); //---------------------------------------------------------------------- Serial.println("Use this URL to connect: http://" + WiFi.localIP().toString() + "/"); // Print the IP address server.on("/", I2C_Modules); // If the user types at their browser http://192.168.0.100/ control is passed here and then to user_input, you get values for your program... server.on("/I2C_Modules", I2C_Modules); server.on("/UART_Modules", UART_Modules); server.on("/AJAX_Data", AJAX_Data_Function); // AJAX data server.onNotFound(handleNotFound); // If the user types something that is not supported, say so server.begin(); Serial.println(F("Webserver started...")); // Start the webserver irrecv.enableIRIn(); // Start the receiver pinMode (34, INPUT); } void loop () { server.handleClient(); if (Active_UART_Module == MOD_IRDA) MOD_IRDA_loop_Routine (); } void handleNotFound() { String message = "The request entered could not be found, please try again with a different option\n"; server.send(404, "text/plain", message); } void I2C_Modules () { String MOD_IO_CheckBoxChoice = ""; webpage = ""; // don't delete this command, it ensures the server works reliably! append_HTML_header(); String IPaddress = WiFi.localIP().toString(); webpage += "

I2C modules

"; // MOD-IO webpage += "
MOD-IO"; webpage += "
"; webpage += "
"; webpage += "
"; webpage += "
"; webpage += ""; webpage += "
"; // MOD-BME280 webpage += "
MOD-BME280"; webpage += ""; webpage += "
"; webpage += "
"; webpage += "
"; webpage += "
"; webpage += "
"; // MOD-LTR501 webpage += "
MOD-LTR501"; webpage += ""; webpage += "
"; webpage += "
"; webpage += "
"; webpage += "
"; webpage += "
"; // container // And so-on webpage += ""; append_HTML_footer(); server.send(200, "text/html", webpage); // Send a response to the client to enter their inputs, if needed, Enter=defaults if (server.args() > 0 ) { // Arguments were received for ( uint8_t i = 0; i < server.args(); i++ ) { static int MOD_IO_Temp=0, MOD_IO_RelayValue = 0; String Argument_Name = server.argName(i); String client_response = server.arg(i); if (Argument_Name == "MOD_IO_CheckBox") { MOD_IO_CheckBoxChoice = client_response; // Checking for more than one check-box being selected too, 'a' if more than one MOD_IO_Temp = MOD_IO_CheckBoxChoice.toInt () - 1; // SPP MOD_IO_RelayValue = MOD_IO_RelayValue | (1 << MOD_IO_Temp); Serial.println (MOD_IO_RelayValue); MOD_IO_SetRelay (MOD_IO_RelayValue); } if (Argument_Name == "MOD_IO_Relay") { Serial.print ("Value: "); Serial.println (MOD_IO_RelayValue); MOD_IO_SetRelay (MOD_IO_RelayValue); MOD_IO_RelayValue = 0; } } } } void UART_Modules () { String MOD_LCD_Text; webpage = ""; // don't delete this command, it ensures the server works reliably! append_HTML_header(); String IPaddress = WiFi.localIP().toString(); // UART Modules webpage += "

UART modules

"; //webpage += "
Select module"; //webpage += "UART modules can't operate together because they work on different baud rate and share same RX and TX. Initialize one of them:
"; webpage += "
"; webpage += "Initialize one of the modules:
"; webpage += " "; webpage += " "; webpage += "
"; webpage += "
"; // MOD-IRDA webpage += "
MOD-IRDA"; webpage += ""; webpage += "
"; webpage += "
"; webpage += "
"; // MOD-MIFARE webpage += "
MOD-RFID1356-MIFARE"; webpage += ""; webpage += "
"; webpage += "
"; // MOD-LCD webpage += "
MOD-LCD 4.3\""; webpage += ""; webpage += ""; webpage += ""; webpage += "
"; webpage += "
"; webpage += "
"; webpage += "
"; // div container webpage += " "; // And so-on webpage += ""; append_HTML_footer(); server.send(200, "text/html", webpage); // Send a response to the client to enter their inputs, if needed, Enter=defaults if (server.args() > 0 ) { // Arguments were received for ( uint8_t i = 0; i < server.args(); i++ ) { String Argument_Name = server.argName(i); String client_response = server.arg(i); if (Argument_Name == "MOD_LCD_Text") MOD_LCD_Text = client_response; if (Argument_Name == "MOD_LCD_Button") { if (Active_UART_Module == MOD_LCD) { Serial2.print (MOD_LCD_Text); Serial2.print ("\n\r"); } } if (Argument_Name == "Init_MOD_LCD") { Serial2.begin (115200, SERIAL_8N1, 36, 4, false); // UEXT UART Serial2.print ("\n\r"); Active_UART_Module = MOD_LCD; } if (Argument_Name == "Init_MOD_IRDA") { Active_UART_Module = MOD_IRDA; } if (Argument_Name == "Init_MOD_RFID_MIFARE") { Serial2.begin (38400, SERIAL_8N1, 36, 4, false); // UEXT UART Active_UART_Module = MOD_RFID_MIFARE; } } } } void StartWiFi(const char* ssid, const char* password) { int connAttempts = 0; Serial.print(F("\r\nConnecting to: ")); Serial.println(String(ssid)); WiFi.begin(ssid, password); while (WiFi.status() != WL_CONNECTED ) { delay(500); Serial.print("."); if (connAttempts > 20) { Serial.println("Failed to connect to WiFi"); } connAttempts++; } Serial.print(F("WiFi connected at: ")); Serial.println(WiFi.localIP()); } void append_HTML_header() { webpage = ""; webpage += ""; webpage += ""; // AJAX data webpage += ""; // 5-min refresh time, test needed to prevent auto updates repeating some commands webpage += "\n\ \n\ \n\ \n"; webpage += ""; webpage += ""; webpage +="\ "; webpage += ""; webpage += "
"; webpage += "
"; webpage += "
" + sitetitle + "
"; webpage += "

" + siteheading + " " + siteversion + "

"; // For each new page you add or remove, make sure there is a menu item to call it or remove it when not used webpage += ""; } void append_HTML_footer() { webpage += ""; webpage += "
"; }