initial commit

.gitignore

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+.pio
+.vscode/.browse.c_cpp.db*
+.vscode/c_cpp_properties.json
+.vscode/launch.json
+.vscode/ipch

.travis.yml

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+# Continuous Integration (CI) is the practice, in software
+# engineering, of merging all developer working copies with a shared mainline
+# several times a day < https://docs.platformio.org/page/ci/index.html >
+#
+# Documentation:
+#
+# * Travis CI Embedded Builds with PlatformIO
+#   < https://docs.travis-ci.com/user/integration/platformio/ >
+#
+# * PlatformIO integration with Travis CI
+#   < https://docs.platformio.org/page/ci/travis.html >
+#
+# * User Guide for `platformio ci` command
+#   < https://docs.platformio.org/page/userguide/cmd_ci.html >
+#
+#
+# Please choose one of the following templates (proposed below) and uncomment
+# it (remove "# " before each line) or use own configuration according to the
+# Travis CI documentation (see above).
+#
+
+
+#
+# Template #1: General project. Test it using existing `platformio.ini`.
+#
+
+# language: python
+# python:
+#     - "2.7"
+#
+# sudo: false
+# cache:
+#     directories:
+#         - "~/.platformio"
+#
+# install:
+#     - pip install -U platformio
+#     - platformio update
+#
+# script:
+#     - platformio run
+
+
+#
+# Template #2: The project is intended to be used as a library with examples.
+#
+
+# language: python
+# python:
+#     - "2.7"
+#
+# sudo: false
+# cache:
+#     directories:
+#         - "~/.platformio"
+#
+# env:
+#     - PLATFORMIO_CI_SRC=path/to/test/file.c
+#     - PLATFORMIO_CI_SRC=examples/file.ino
+#     - PLATFORMIO_CI_SRC=path/to/test/directory
+#
+# install:
+#     - pip install -U platformio
+#     - platformio update
+#
+# script:
+#     - platformio ci --lib="." --board=ID_1 --board=ID_2 --board=ID_N

.vscode/extensions.json

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+{
+    // See http://go.microsoft.com/fwlink/?LinkId=827846
+    // for the documentation about the extensions.json format
+    "recommendations": [
+        "platformio.platformio-ide"
+    ]
+}

.vscode/settings.json

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+{
+    "C_Cpp.errorSquiggles": "Disabled"
+}

include/README

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+
+This directory is intended for project header files.
+
+A header file is a file containing C declarations and macro definitions
+to be shared between several project source files. You request the use of a
+header file in your project source file (C, C++, etc) located in `src` folder
+by including it, with the C preprocessing directive `#include'.
+
+```src/main.c
+
+#include "header.h"
+
+int main (void)
+{
+ ...
+}
+```
+
+Including a header file produces the same results as copying the header file
+into each source file that needs it. Such copying would be time-consuming
+and error-prone. With a header file, the related declarations appear
+in only one place. If they need to be changed, they can be changed in one
+place, and programs that include the header file will automatically use the
+new version when next recompiled. The header file eliminates the labor of
+finding and changing all the copies as well as the risk that a failure to
+find one copy will result in inconsistencies within a program.
+
+In C, the usual convention is to give header files names that end with `.h'.
+It is most portable to use only letters, digits, dashes, and underscores in
+header file names, and at most one dot.
+
+Read more about using header files in official GCC documentation:
+
+* Include Syntax
+* Include Operation
+* Once-Only Headers
+* Computed Includes
+
+https://gcc.gnu.org/onlinedocs/cpp/Header-Files.html

lib/README

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+
+This directory is intended for project specific (private) libraries.
+PlatformIO will compile them to static libraries and link into executable file.
+
+The source code of each library should be placed in a an own separate directory
+("lib/your_library_name/[here are source files]").
+
+For example, see a structure of the following two libraries `Foo` and `Bar`:
+
+|--lib
+|  |
+|  |--Bar
+|  |  |--docs
+|  |  |--examples
+|  |  |--src
+|  |     |- Bar.c
+|  |     |- Bar.h
+|  |  |- library.json (optional, custom build options, etc) https://docs.platformio.org/page/librarymanager/config.html
+|  |
+|  |--Foo
+|  |  |- Foo.c
+|  |  |- Foo.h
+|  |
+|  |- README --> THIS FILE
+|
+|- platformio.ini
+|--src
+   |- main.c
+
+and a contents of `src/main.c`:
+```
+#include <Foo.h>
+#include <Bar.h>
+
+int main (void)
+{
+  ...
+}
+
+```
+
+PlatformIO Library Dependency Finder will find automatically dependent
+libraries scanning project source files.
+
+More information about PlatformIO Library Dependency Finder
+- https://docs.platformio.org/page/librarymanager/ldf.html

platformio.ini

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+; PlatformIO Project Configuration File
+;
+;   Build options: build flags, source filter
+;   Upload options: custom upload port, speed and extra flags
+;   Library options: dependencies, extra library storages
+;   Advanced options: extra scripting
+;
+; Please visit documentation for the other options and examples
+; https://docs.platformio.org/page/projectconf.html
+
+[env:heltec_wifi_lora_32_V2]
+platform = espressif32
+board = heltec_wifi_lora_32_V2
+framework = arduino

src/index.html

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+<h1>My ESP32 Webserver</h1>

src/main.cpp

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+#include <Arduino.h>
+#include <U8x8lib.h>
+#include <WiFi.h>
+#include <AsyncTCP.h>
+#include <ESPAsyncWebServer.h>
+#include <DNSServer.h>
+
+#define OLED_SCL 15   // GPIO 15
+#define OLED_SDA  4   // GPIO  4
+#define OLED_RST 16   // GPIO 16
+
+long previousMillis = 0;
+long interval = 1000;
+
+const char *ssid = "SSID";
+String apIP = "";
+//const char *password = "1234";
+
+U8X8_SSD1306_128X64_NONAME_SW_I2C u8x8(/* clock=*/ OLED_SCL, /* data=*/ OLED_SDA, /* reset=*/ OLED_RST);
+AsyncWebServer server(80);
+
+const char index_html[] PROGMEM = R"rawliteral(
+<!DOCTYPE HTML><html><head>
+  <title>Mazzens ESP32 Lora</title>
+  <meta http-equiv="content-type" content="text/html; charset=utf-8">
+  </head><body>
+  <h1>Happy Birthday, Digger!!</h1>
+  <h2>Wünschen dir Alle</h2>
+  <p>P.S.: keine Lust zu stylen:/</p>
+  <p>Lass es dir gut gehen</p>
+  </body></html>)rawliteral";
+
+void printDisplay(String str1, String str2, String str3, String str4){
+    u8x8.clear();
+    const char* thisstr1 = str1.c_str();
+    const char* thisstr2 = str2.c_str();
+    const char* thisstr3 = str3.c_str();
+    const char* thisstr4 = str4.c_str();
+    u8x8.setFont(u8x8_font_chroma48medium8_r);
+    u8x8.drawString(0,0, thisstr1);
+    u8x8.drawString(0,1,thisstr2);
+    u8x8.drawString(0,3,thisstr3);
+    u8x8.drawString(0,4,thisstr4);
+    delay(2000);
+}
+
+void printDSPstartup(){
+  printDisplay("Irgendwas", "Access Point!", ssid, "IP: " + apIP);
+}
+
+void setup() {
+  Serial.begin(9600);
+  Serial.println();
+  Serial.print("Configuring access point...");
+  /* You can remove the password parameter if you want the AP to be open. */
+  //WiFi.softAP(ssid, password);
+  WiFi.softAP(ssid);
+
+  IPAddress myIP = WiFi.softAPIP();
+  apIP = myIP.toString();
+  Serial.print("AP IP address: ");
+  u8x8.begin();
+  u8x8.setPowerSave(0);
+
+  server.on("/", HTTP_GET, [](AsyncWebServerRequest *request){
+    request->send_P(200, "text/html", index_html);
+    printDisplay("Client connected", "Have fun", "", "");
+  });
+  server.begin();
+
+  printDSPstartup();
+}
+
+void loop() {
+  unsigned long currentMillis = millis();
+  if(currentMillis - previousMillis > interval) {
+    previousMillis = currentMillis;
+    Serial.println("Timer elapsed");
+    //Do fancy stuff here on the Birthday! :-D
+  }
+}

test/README

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+
+This directory is intended for PIO Unit Testing and project tests.
+
+Unit Testing is a software testing method by which individual units of
+source code, sets of one or more MCU program modules together with associated
+control data, usage procedures, and operating procedures, are tested to
+determine whether they are fit for use. Unit testing finds problems early
+in the development cycle.
+
+More information about PIO Unit Testing:
+- https://docs.platformio.org/page/plus/unit-testing.html