{"id":4483,"date":"2025-04-13T20:58:50","date_gmt":"2025-04-14T00:58:50","guid":{"rendered":"https:\/\/dft.wiki\/?p=4483"},"modified":"2026-01-17T10:28:12","modified_gmt":"2026-01-17T15:28:12","slug":"programming-esp32-wifi-with-arduino-ide","status":"publish","type":"post","link":"https:\/\/dft.wiki\/?p=4483","title":{"rendered":"Programming ESP32 Wifi with Arduino IDE"},"content":{"rendered":"

COMMANDS<\/strong><\/p>\n

~\/Downloads\/arduino-ide_2.3.4_Linux_64bit.AppImage &> \/dev\/null\r\nsudo apt install python3-pip\r\npip3 install pyserial\r\nsudo usermod -aG userName dialout\r\nsudo chmod a+rw \/dev\/ttyUSB0<\/pre>\n
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EXAMPLES<\/strong><\/p>\n
(1)<\/strong>\u00a0HTTP API Enpoints with JSON<\/p>\n
\/\/ ESP32-WROOM-32U\r\n\r\n#include <WiFi.h>\r\n#include <WebServer.h>\r\n#include <ArduinoJson.h>\r\n#include <HTTPClient.h>\r\n\r\n\/\/ Wifi credentials\r\nconst char* ssid = \"wifi_name<\/strong>\";\r\nconst char* password = \"wifi_password<\/strong>\";\r\n\r\n\/\/ Create a WebServer object on port 80\r\nWebServer server(80);\r\n\r\n\/\/ Handler for \"\/\"\r\nvoid handleRoot() {\r\n  String body = \"<!DOCTYPE html><html><head><title>ESP32<\/title><\/head><body>\";\r\n  body += \"<h1>ESP32 HTTP Server!<\/h1>\\n\\n\";\r\n  body += \"<a href=\\\"\/status\\\">Show Status<\/a><br>\\n\";\r\n  body += \"<a href=\\\"\/push\\\">Push Status<\/a><br>\\n\";\r\n  body += \"<a href=\\\"\/serial\\\">Output Status<\/a><br>\\n\";\r\n  body += \"<\/body><\/html>\";\r\n  server.send(200, \"text\/html\", body);\r\n  Serial.println(\"Client IP: \" + server.client().remoteIP().toString());\r\n}\r\n\r\nString getStatusJson() {\r\n  StaticJsonDocument<512> jsonData;\r\n  jsonData[\"wifi_connected\"] = String(WiFi.status() == WL_CONNECTED ? \"true\" : \"false\");\r\n  jsonData[\"signal_strength\"] = String(WiFi.RSSI());\r\n  jsonData[\"ssid\"] = WiFi.localIP().toString();\r\n  jsonData[\"ip\"] = WiFi.localIP().toString();\r\n  jsonData[\"uptime\"] = String(millis() \/ 1000);\r\n  jsonData[\"free_heap\"] = String(ESP.getFreeHeap());\r\n  jsonData[\"chip_model\"] = String(ESP.getChipModel());\r\n  jsonData[\"flash_size\"] = String(ESP.getFlashChipSize());\r\n  String jsonString;\r\n  serializeJson(jsonData, jsonString);\r\n  return jsonString;\r\n}\r\n\r\nvoid pushNotification(const String &message = \"\"){\r\n  \/\/ Perform an HTTP GET request\r\n  if (WiFi.status() == WL_CONNECTED) {\r\n    HTTPClient http;\r\n    http.begin(\"http:\/\/ntfy.sh\/subscription_topic<\/strong>\");\r\n    http.addHeader(\"Content-Type\", \"application\/json\");\r\n\r\n    String payload;\r\n    if (message.length() > 0){\r\n      payload = message;\r\n    } else {\r\n      payload = getStatusJson();\r\n    }\r\n\r\n    int httpResponseCode = http.POST(payload);\r\n    if (httpResponseCode == 200){\r\n      Serial.println(\"Push notification succeeded!\");\r\n    } else {\r\n      Serial.println(\"Push failed with error: \" + httpResponseCode);\r\n    }\r\n\r\n    http.end();\r\n  }\r\n}\r\n\r\n\/\/ Handler for \"\/status\"\r\nvoid handleStatus() {\r\n  server.send(200, \"application\/json\", getStatusJson());\r\n}\r\n\r\n\/\/ Handler for \"\/push\"\r\nvoid handlePush() {\r\n  pushNotification();\r\n  server.send(200, \"text\/plain\", \"\");\r\n}\r\n\r\n\/\/ Handler for \"\/serial\"\r\nvoid handleSerial() {\r\n  Serial.println(getStatusJson());\r\n  server.send(200, \"text\/plain\", \"\");\r\n}\r\n\r\n\/\/ Handler for 404\r\nvoid handleNotFound() {\r\n  server.send(404, \"text\/plain\", \"404: Not Found\");\r\n}\r\n\r\nvoid setup() {\r\n  \/\/ Setting up the Serial\r\n  Serial.begin(115200);\r\n  delay(1000);\r\n\r\n  Serial.println(\"\");\r\n  Serial.println(\"\");\r\n  Serial.println(\"Serial Started\");\r\n\r\n  \/\/ Connect to Wi-Fi\r\n  Serial.println(\"Starting WIFI\");\r\n  WiFi.begin(ssid, password);\r\n  while (WiFi.status() != WL_CONNECTED) {\r\n    delay(500);\r\n    Serial.println(\"Connecting...\");\r\n  }\r\n  Serial.println(\"Connected to Wi-Fi!\");\r\n  Serial.println(\"IP Address: \" + WiFi.localIP().toString());\r\n\r\n  \/\/ Define URL routes\r\n  server.on(\"\/\", handleRoot);\r\n  server.on(\"\/status\", handleStatus);\r\n  server.on(\"\/push\", handlePush);\r\n  server.on(\"\/serial\", handleSerial);\r\n  server.onNotFound(handleNotFound);\r\n\r\n  \/\/ Start the server\r\n  server.begin();\r\n  Serial.println(\"HTTP server started\");\r\n\r\n  \/\/ Push notification\r\n  StaticJsonDocument<48> jsonData;\r\n  jsonData[\"ip\"] = WiFi.localIP().toString();\r\n  String jsonString;\r\n  serializeJson(jsonData, jsonString);\r\n  pushNotification(jsonString);\r\n}\r\n\r\nvoid loop() {\r\n  \/\/ Handle client requests\r\n  server.handleClient();\r\n}<\/pre>\n
(in progress)<\/p>\n
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DOCUMENTATIONS<\/strong><\/p>\n