moved to esp32 and added display and counter

vscode/Unendlichkeitsmaschine/.gitignore

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

vscode/Unendlichkeitsmaschine/.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"
+    ],
+    "unwantedRecommendations": [
+        "ms-vscode.cpptools-extension-pack"
+    ]
+}

vscode/Unendlichkeitsmaschine/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

vscode/Unendlichkeitsmaschine/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

vscode/Unendlichkeitsmaschine/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:esp32]
+platform = espressif32
+board = esp32dev
+framework = arduino
+lib_deps = 
+	thingpulse/ESP8266 and ESP32 OLED driver for SSD1306 displays@^4.2.1
+	madhephaestus/ESP32Servo@^0.11.0

vscode/Unendlichkeitsmaschine/src/main.cpp

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+#include <ESP32Servo.h>
+#include <Arduino.h>
+#include <Wire.h>               // Only needed for Arduino 1.6.5 and earlier
+#include "SSD1306Wire.h"        // legacy: #include "SSD1306.h"
+
+SSD1306Wire display(0x3c, SDA, SCL); 
+Servo ESC;     // Der ESC-Controller (Electronic Speed Controller bzw. elektronischer Fahrtregler) wird als Objekt mit dem Namen "ESC" festgelegt.
+int Drehregler;  // Ausgabewert des Drehreglers
+int speed, last_speed; // Das Wort "Geschwindigkeit" steht als Variable für den Ansteuerungswert am ESC.
+unsigned long turn = 0;
+unsigned long speedturns = 0;
+unsigned long speedchanged_ms = 0;
+unsigned long speed_u_per_min = 0;
+
+const uint8_t LED_BUILTIN = 2;
+const uint8_t POTI_PIN = 4;
+const uint8_t ESC_PIN = 16;
+const uint8_t LS1_PIN = 14;
+
+const uint8_t MAX_ESC_SPEED = 60;
+const uint8_t MIN_ESC_SPEED = 35;
+const uint16_t MAX_POTI_VALUE = 4095;
+
+void show_values();
+void ISR();
+
+void setup() 
+{
+  Serial.begin(9600);
+   // Initialising the UI will init the display too.
+  display.init();
+  display.clear();
+  display.flipScreenVertically();
+  //display.setFont(ArialMT_Plain_10);
+  display.setTextAlignment(TEXT_ALIGN_CENTER);
+  display.setFont(ArialMT_Plain_24);
+  display.setFont(ArialMT_Plain_16);
+  display.drawString(64, 2, "Init controller");
+  display.setFont(ArialMT_Plain_10);
+  display.drawString(64, 40, "You may hear some beeps.");
+  display.drawString(64, 52, "That's OK! ;-)");
+  display.display();  
+  display.setTextAlignment(TEXT_ALIGN_LEFT);
+  display.setFont(ArialMT_Plain_16);
+  ESC.attach(ESC_PIN,1000,2000); 
+
+  for(uint8_t i=0;i<=100;i=i+10)
+  {
+    display.drawProgressBar(6, 28, 116, 6, i);
+    delay(500);
+    ESC.write(0);
+    display.display();    
+  }
+
+  attachInterrupt(LS1_PIN, ISR, RISING);
+
+  last_speed = 0;
+  speed = 0;
+
+
+}
+
+void loop() 
+{
+  
+  Drehregler = analogRead(POTI_PIN);   // Dieser Befehl liest den Wert des Potentiometers am analogen Pin A0 aus und speichert ihn unter der Variablen "Drehregler". Der Wert liegt zwischen 0 und 1023.
+  speed = map(Drehregler, 0, MAX_POTI_VALUE, MIN_ESC_SPEED, MAX_ESC_SPEED);   // Der "MAP-" Befehl wandelt den Messwert aus der Variablen "Drehregler" um, damit er am ESC verarbeitet werden kann. Der Zahlenbereich 0 bis 1023 wird dabei in einen Zahlenwert zwischen 0 und 180 umgewandelt.
+  if(speed != last_speed)
+  {
+    last_speed = speed;
+    speedchanged_ms = millis();
+    speedturns = 0;
+  }
+
+  if(millis() - speedchanged_ms > 10000)
+  {
+    speed_u_per_min = (speedturns*6);
+    speedturns = 0;
+    speedchanged_ms = millis();
+  }
+
+  //Serial.print("Drehregler:"); Serial.print(Drehregler); Serial.print(",  Speed:");Serial.println(speed);
+  if(MIN_ESC_SPEED < speed)
+    ESC.write(speed);    // Der endgültige Wert für den ESC wird an den ESC gesendet. Der ESC nimmt das Signal an dieser Stelle auf und steuert den Motor entsprechend der gesendeten Werte an.
+  else
+    ESC.write(0); 
+
+  show_values();
+}
+
+void show_values()
+{
+    display.clear();
+    display.setTextAlignment(TEXT_ALIGN_LEFT);
+    display.setFont(ArialMT_Plain_10);
+    display.drawString(1, 1, "Speed:");
+    display.drawProgressBar(40, 4, 80, 6, map(speed, MIN_ESC_SPEED,MAX_ESC_SPEED,0,100));
+    display.setFont(ArialMT_Plain_10);
+    display.drawString(1, 15, "Turns:");
+    display.drawString(35, 15, String(turn));
+    display.setFont(ArialMT_Plain_24);
+    display.setTextAlignment(TEXT_ALIGN_RIGHT);
+    display.drawString(64, 37, String(speed_u_per_min));
+    display.setTextAlignment(TEXT_ALIGN_LEFT);
+    display.drawString(68,37, "U/min");
+    display.display();    
+}
+
+void IRAM_ATTR ISR()
+{
+  turn++;
+  speedturns++;
+}
+
+

vscode/Unendlichkeitsmaschine/test/README

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+
+This directory is intended for PlatformIO 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 PlatformIO Unit Testing:
+- https://docs.platformio.org/page/plus/unit-testing.html