#include #include #include "FS.h" #include "SPIFFS.h" #include #include #define MESSAGE_MAX_LEN 256 //**************DEEP SLEEP CONFIG******************// #define uS_TO_S_FACTOR 1000000 #define TIME_TO_SLEEP 5 //************** Auxillary functions******************// WebServer server(80); StaticJsonDocument<234> jsonBuffer; //**********softAPconfig Timer*************// unsigned long APTimer = 0; unsigned long APInterval = 120000; //*********SSID and Pass for AP**************// const char* ssidAPConfig = "Andreas-Grabner.NET"; const char* passAPConfig = "born2win"; //**********check for connection*************// bool isConnected = true; bool isAPConnected = true; //*********Contains SPIFFS Info*************// String debugLogData; //HTML char array const char HTTP_HEAD_HTML[] PROGMEM = "ESP32 Demo"; const char HTTP_STYLE[] PROGMEM= ""; const char HTTP_HEAD_STYLE[] PROGMEM= "

ESP32 Captive Portal

Give Your WiFi Credentials

"; const char HTTP_FORM_START[] PROGMEM= ""; const char HTTP_SCRIPT[] PROGMEM= ""; const char HTTP_END[] PROGMEM= ""; //const char* const WEBPAGE_TABLE[] PROGMEM = {HTTP_HEAD_HTML, HTTP_STYLE, HTTP_HEAD_STYLE, HTTP_FORM_START, HTTP_CONTENT1_START, HTTP_CONTENT2_START,HTTP_CONTENT3_START,HTTP_CONTENT4_START,HTTP_CONTENT5_START,HTTP_FORM_END,HTTP_SCRIPT, }; const char* messageStatic PROGMEM= "{\"staticSet\":\"staticValue\", \"staticIP\":\"%s\", \"staticGate\":\"%s\", \"staticSub\":\"%s\",\"ssidStatic\":\"%s\",\"staticPass\":\"%s\"}"; const char* messageDhcp PROGMEM= "{\"dhcpSet\":\"dhcpValue\",\"ssidDHCP\":\"%s\", \"passDHCP\":\"%s\"}"; const char HTTP_PAGE_STATIC[] PROGMEM = "

{s}
{g}
{n}

"; const char HTTP_PAGE_DHCP[] PROGMEM = "

{s}

"; const char HTTP_PAGE_WiFi[] PROGMEM = "

{s}
{p}

"; const char HTTP_PAGE_GOHOME[] PROGMEM = "

go home

"; char messageBuf[MESSAGE_MAX_LEN]; void setup() { Serial.begin(115200); while(!Serial); WiFi.persistent(false); WiFi.disconnect(true); SPIFFS.begin(); delay(100); EEPROM.begin(512); delay(100); File file = SPIFFS.open("/ip_set.txt", "r"); Serial.println("- read from file:"); if(!file){ Serial.println("- failed to open file for reading"); return; } while(file.available()){ debugLogData += char(file.read()); } file.close(); if(debugLogData.length()>10){ //JsonObject& readRoot =jsonBuffer.parseObject(debugLogData); StaticJsonDocument<256> readRoot; deserializeJson(readRoot, debugLogData); Serial.println("====================================="); Serial.println(debugLogData); Serial.println("====================================="); if(readRoot.containsKey("staticSet")){ Serial.println("Static IP Started "); staticAPConfig(readRoot["staticIP"],readRoot["staticGate"],readRoot["staticSub"],readRoot["ssidStatic"],readRoot["staticPass"]); } else if(readRoot.containsKey("dhcpSet")){ Serial.println("DHCP IP Started" ); dhcpAPConfig(readRoot["ssidDHCP"],readRoot["passDHCP"]); } else{ handleClientAP(); } }else{ handleClientAP(); } reconnectWiFi(); } void loop() { Serial.println(WiFi.localIP()); delay(500); } //****************************HANDLE ROOT***************************// void handleRoot() { //Redisplay the form if(server.args()>0){ for(int i=0; i<=server.args();i++){ Serial.println(String(server.argName(i))+'\t' + String(server.arg(i))); } if(server.hasArg("ipv4static") && server.hasArg("gateway") && server.hasArg("subnet")){ staticSet(); }else if(server.hasArg("passkeyDhcp")&&server.hasArg("ssidDhcp")){ dhcpSetDefault(); } }else{ File file = SPIFFS.open("/Select_Settings.html", "r"); server.streamFile(file,"text/html"); file.close(); } } //****************************HANDLE DHCP***************************// void handleDHCP(){ File file = SPIFFS.open("/page_dhcp.html", "r"); server.streamFile(file,"text/html"); file.close(); } //****************************HANDLE STATIC***************************// void handleStatic(){ File file = SPIFFS.open("/page_static.html", "r"); server.streamFile(file,"text/html"); file.close(); } //*************Helper Meathod for Writing IP CONFIG**************// //*************Helper 1 STATIC**************// void staticSet(){ String response=FPSTR(HTTP_PAGE_STATIC); response.replace("{s}",server.arg("ipv4static")); response.replace("{g}",server.arg("gateway")); response.replace("{n}",server.arg("subnet")); response+=FPSTR(HTTP_PAGE_GOHOME); server.send(200, "text/html", response); snprintf(messageBuf,MESSAGE_MAX_LEN,messageStatic,String(server.arg("ipv4static")),String(server.arg("gateway")),String(server.arg("subnet")),String(server.arg("ssidStatic")),String(server.arg("passkeyStatic"))); String str(messageBuf); File fileToWrite = SPIFFS.open("/ip_set.txt", FILE_WRITE); if(!fileToWrite){ Serial.println("Error opening SPIFFS"); return; } if(fileToWrite.write((uint8_t*)str.c_str(),str.length())){ Serial.println("--File Written"); }else{ Serial.println("--Error Writing File"); } fileToWrite.close(); isConnected = false; } //*************Helper 3 DHCP DEFAULT**************// void dhcpSetDefault(){ String response=FPSTR(HTTP_PAGE_DHCP); response.replace("{s}","192.168.4.1"); response+=FPSTR(HTTP_PAGE_GOHOME); server.send(200, "text/html", response); snprintf(messageBuf,MESSAGE_MAX_LEN,messageDhcp,String(server.arg("ssidDhcp")).c_str(),String(server.arg("passkeyDhcp")).c_str()); String str(messageBuf); File fileToWrite = SPIFFS.open("/ip_set.txt", FILE_WRITE); if(!fileToWrite){ Serial.println("Error opening SPIFFS"); } if(fileToWrite.write((uint8_t*)str.c_str(),str.length())){ Serial.println(F("--File Written")); }else{ Serial.println(F("--Error Writing File")); } fileToWrite.close(); isConnected = false; } //****************HANDLE NOT FOUND*********************// void handleNotFound() { String message = "File Not Found\n\n"; message += "URI: "; message += server.uri(); server.send(404, "text/plain", message); } //***************Parse bytes from string******************// void parseBytes(const char* str, char sep, byte* bytes, int maxBytes, int base) { for (int i = 0; i < maxBytes; i++) { bytes[i] = strtoul(str, NULL, base); // Convert byte str = strchr(str, sep); // Find next separator if (str == NULL || *str == '\0') { break; // No more separators, exit } str++; // Point to next character after separator } } //****************HANDLE CLIENT 192.168.1.77*********************// void handleClientAP(){ //*********Static IP Config**************// WiFi.mode(WIFI_AP); Serial.println(WiFi.softAP(ssidAPConfig,passAPConfig) ? "soft-AP setup": "Failed to connect"); delay(100); Serial.println(WiFi.softAPConfig( IPAddress(192,168,1,77),IPAddress(192,168,1,254), IPAddress(255,255,255,0))? "Configuring Soft AP" : "Error in Configuration"); Serial.println(WiFi.softAPIP()); server.begin(); server.on("/", handleRoot); server.on("/dhcp", handleDHCP); server.on("/static", handleStatic); server.onNotFound(handleNotFound); APTimer = millis(); while(isConnected && millis()-APTimer<= APInterval) { server.handleClient();} esp_sleep_enable_timer_wakeup(TIME_TO_SLEEP * uS_TO_S_FACTOR); esp_deep_sleep_start(); } //***************************STATIC Helper method**************************// void staticAPConfig(String IPStatic, String gateway, String subnet, String ssid, String pass){ //*********hold IP octet**************// uint8_t ip0,ip1,ip2,ip3; //*********IP Char Array**************// Serial.print(ssid); Serial.print(pass); byte ip[4]; parseBytes(IPStatic.c_str(),'.', ip, 4, 10); ip0 = (uint8_t)ip[0]; ip1 = (uint8_t)ip[1]; ip2 = (uint8_t)ip[2]; ip3 = (uint8_t)ip[3]; IPAddress ap_local(ip0,ip1,ip2,ip3); parseBytes(gateway.c_str(),'.', ip, 4, 10); ip0 = (uint8_t)ip[0]; ip1 = (uint8_t)ip[1]; ip2 = (uint8_t)ip[2]; ip3 = (uint8_t)ip[3]; IPAddress ap_gate(ip0,ip1,ip2,ip3); parseBytes(subnet.c_str(),'.', ip, 4, 10); ip0 = (uint8_t)ip[0]; ip1 = (uint8_t)ip[1]; ip2 = (uint8_t)ip[2]; ip3 = (uint8_t)ip[3]; IPAddress ap_net(ip0,ip1,ip2,ip3); WiFi.disconnect(true); WiFi.mode(WIFI_AP); Serial.println(WiFi.softAP(ssid.c_str(),pass.c_str()) ? "Setting up SoftAP" : "error setting up"); delay(100); Serial.println(WiFi.softAPConfig(ap_local, ap_gate, ap_net) ? "Configuring softAP" : "kya yaar not connected"); Serial.println(WiFi.softAPIP()); server.begin(); server.on("/", handleStaticForm); server.onNotFound(handleNotFound); APTimer = millis(); while(isAPConnected && millis()-APTimer<= APInterval) { server.handleClient(); } } //***************************WiFi Credintial Form**************************// void dhcpAPConfig(String ssid, String pass){ WiFi.mode(WIFI_OFF); WiFi.softAPdisconnect(true); delay(1000); WiFi.mode(WIFI_AP); Serial.println(WiFi.softAP(ssid.c_str(),pass.c_str()) ? "Setting up SoftAP" : "error setting up"); delay(200); Serial.println(WiFi.softAPIP()); server.begin(); server.on("/", handleStaticForm); server.onNotFound(handleNotFound); APTimer = millis(); while(isAPConnected && millis()-APTimer<= APInterval) { server.handleClient(); } } //****************************HANDLE STATIC FORM***************************// void handleStaticForm() { //JsonObject& root =jsonBuffer.createObject(); DynamicJsonDocument root(1024); root["no"]= ""; //root.printTo(Serial); serializeJson(root, Serial); if(server.hasArg("ssid") && server.hasArg("passkey")){ if(server.arg("configure") != ""){ File fileToWrite = SPIFFS.open("/ip_set.txt", FILE_WRITE); if(!fileToWrite){ Serial.println("Error opening SPIFFS"); return; } if(!serializeJson(root, fileToWrite)){ Serial.println("--File Written"); esp_sleep_enable_timer_wakeup(TIME_TO_SLEEP * uS_TO_S_FACTOR); esp_deep_sleep_start(); }else{ Serial.println("--Error Writing File"); } } handleSubmitForm(); }else{ int n = WiFi.scanNetworks(); int indices[n]; if(n == 0){ Serial.println("No networks found"); }else{ for (int i = 0; i < n; i++) { indices[i] = i; } for (int i = 0; i < n; i++) { Serial.println(WiFi.SSID(indices[i])); Serial.print('\t'); Serial.println(getRSSIasQuality(WiFi.RSSI(indices[i]))); } } String webpage = FPSTR(HTTP_HEAD_HTML); webpage += FPSTR(HTTP_STYLE); webpage += FPSTR(HTTP_HEAD_STYLE); webpage += FPSTR(HTTP_FORM_START); for(int i=0;i= -50) { quality = 100; } else { quality = 2 * (RSSI + 100); } return quality; }