first commit

.gitignore

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

.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"
+    ]
+}

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:uno]
+platform = atmelavr
+board = uno
+framework = arduino
+lib_deps = 
+	arduino-libraries/LiquidCrystal@^1.0.7
+	pololu/FastGPIO@^2.1.0

src/pap_lcd.ino

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+#include <LiquidCrystal.h>
+LiquidCrystal lcd(8, 9, 4, 5, 6, 7);
+char LCD_Row_1[17];
+char LCD_Row_2[17];
+
+#include <FastGPIO.h>
+#define DREAD(x) FastGPIO::Pin<x>::isInputHigh()
+#define DHIGH(x) FastGPIO::Pin<x>::setOutputHigh()
+#define DLOW(x) FastGPIO::Pin<x>::setOutputLow()
+
+#define ENC_A 3 // D3
+#define ENC_B 2 // D2
+volatile long spindlePos = 0; // Spindle position
+long last_spindlePos = 0;
+int delta_mot = 0;
+int steep_by_click = 1;
+
+#define DIR 11
+#define STEP 12
+#define ENA 13
+
+enum Pressed_Key
+{
+  Key_None,
+  Key_Right,
+  Key_Up,
+  Key_Down,
+  Key_Left,
+  Key_Select
+};
+byte Pressed_Key=Key_None;
+boolean key_flag=false;
+
+void setup() {
+  Serial.begin(9600);
+  // put your setup code here, to run once:
+  lcd.begin(16, 2);
+  snprintf(LCD_Row_1, 17," Hello world");
+  Print();
+
+  pinMode(ENC_A, INPUT_PULLUP);
+  pinMode(ENC_B, INPUT_PULLUP);
+  attachInterrupt(digitalPinToInterrupt(ENC_A), spinEnc, FALLING);
+
+  pinMode(DIR, OUTPUT);
+  pinMode(ENA,OUTPUT);
+  digitalWrite(ENA, LOW);
+  pinMode(STEP, OUTPUT);
+  digitalWrite(STEP, HIGH);
+  Serial.println("Start ...");
+  new_divider();
+}
+
+
+void loop() 
+{
+  // put your main code here, to run repeatedly:
+  menu();
+  if (spindlePos != last_spindlePos) {
+    snprintf(LCD_Row_2, 17, "Enc: %3ld ", spindlePos); 
+    Print();
+    delta_mot = spindlePos - last_spindlePos;
+    if (delta_mot != 0) {
+
+      if (delta_mot > 0) { 
+        DHIGH(DIR);
+      } else {
+        DLOW(DIR);
+        delayMicroseconds(100);
+      }
+      for (int i=0; i <= (abs(delta_mot) * steep_by_click) ; i++ )   {
+        DLOW(STEP);
+        delayMicroseconds(500);
+        DHIGH(STEP);
+        delayMicroseconds(500);
+        }
+      }
+    
+    Serial.println(spindlePos);
+    last_spindlePos = spindlePos;
+    }
+  }
+
+void menu()
+{
+  int ADC_value = analogRead(A0);
+  if (ADC_value < 50) Pressed_Key=Key_Right;
+  else if (ADC_value < 180) Pressed_Key=Key_Up;
+  else if (ADC_value < 330) Pressed_Key=Key_Down;
+  else if (ADC_value < 520) Pressed_Key=Key_Left;
+  else if (ADC_value < 830) Pressed_Key=Key_Select;
+  else Pressed_Key = Key_None;
+
+  if (!key_flag)
+  {
+      switch (Pressed_Key)
+      {
+        case Key_Left:
+          MenuKeyLeftPressed();
+          break;
+        case Key_Right:
+          MenuKeyRightPressed();
+          break;
+        case Key_Up:
+          MenuKeyUpPressed();
+          break;
+        case Key_Down:
+          MenuKeyDownPressed();
+          break;
+        case Key_Select:
+          MenuKeySelectPressed();
+          break;
+      }
+  }
+  if (Pressed_Key == Key_None) key_flag = false;
+}
+void new_divider()
+{
+  key_flag= true;
+  memset (LCD_Row_1, ' ' ,17);
+  snprintf(LCD_Row_1, 17,"Steep/Click: %3hd", steep_by_click);
+  Print();
+
+}
+void MenuKeySelectPressed()
+{
+  spindlePos = 0 ;
+  }
+void MenuKeyRightPressed()
+{
+  }
+void MenuKeyLeftPressed()
+{
+  }
+void MenuKeyUpPressed()
+{
+  if (steep_by_click < 10) {
+    steep_by_click++;
+    new_divider();
+    }
+  }
+
+void MenuKeyDownPressed()
+{
+  if (steep_by_click > 1) {
+    steep_by_click--;
+    new_divider();
+    }
+  }
+
+void Print()
+{
+lcd.clear();
+lcd.setCursor(0, 0);
+lcd.print(LCD_Row_1);
+
+lcd.setCursor(0, 1);
+lcd.print(LCD_Row_2);
+}
+
+// Called on a FALLING interrupt for the rotary encoder pin.
+// Keeps track of the position.
+void spinEnc()
+{
+ int delta;
+ delta = DREAD(ENC_B) ? -1 : 1;
+ spindlePos += delta;
+  }

test/README

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+
+This directory is intended for PlatformIO Test Runner 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/en/latest/advanced/unit-testing/index.html