init

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:seeed_xiao_esp32c3]
+platform = espressif32
+board = seeed_xiao_esp32c3
+framework = arduino
+lib_deps = 
+    waspinator/AccelStepper
+    adafruit/Adafruit NeoPixel@^1.12.2

src/main.cpp

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+#include <Arduino.h>
+
+#include <AccelStepper.h>
+#include <Adafruit_NeoPixel.h>
+
+#define NUM_LEDS_EYES 2
+#define DATA_PIN_EYES 10
+
+#define NUM_LEDS_AURA 10
+#define DATA_PIN_AURA 6
+
+Adafruit_NeoPixel NeoPixel(NUM_LEDS_EYES, DATA_PIN_EYES, NEO_GRB + NEO_KHZ800);
+Adafruit_NeoPixel AuraPixel(NUM_LEDS_AURA, DATA_PIN_AURA, NEO_GBR + NEO_KHZ800);
+
+int dir = 21;
+int step = 20;
+int enable = 5;
+
+// Define a stepper and the pins it will use
+AccelStepper stepper(AccelStepper::DRIVER, step, dir);
+
+void setup()
+{
+  // Change these to suit your stepper if you want
+  stepper.setMaxSpeed(25000);
+  stepper.setSpeed(5000);
+  stepper.setAcceleration(5000);
+
+  pinMode(enable, OUTPUT);
+  digitalWrite(enable, HIGH);
+  digitalWrite(dir, LOW);
+  NeoPixel.begin(); 
+
+  NeoPixel.setPixelColor(0, NeoPixel.Color(0, 255, 0));
+  NeoPixel.setPixelColor(1, NeoPixel.Color(0, 255, 0));
+  NeoPixel.setBrightness(128);
+  NeoPixel.show();
+
+  AuraPixel.begin(); 
+
+  AuraPixel.setPixelColor(0, NeoPixel.Color(0, 255, 0));
+  AuraPixel.setPixelColor(1, NeoPixel.Color(0, 255, 0));
+  AuraPixel.setBrightness(128);
+  AuraPixel.show();
+}
+
+void wink(int delay)
+{
+  digitalWrite(dir, LOW);
+
+  for (int i = 0; i < 7500; i++)
+  {
+    digitalWrite(step, LOW);
+    delayMicroseconds(delay);
+    digitalWrite(step, HIGH);
+  }
+
+  digitalWrite(dir, HIGH);
+  for (int i = 0; i < 7500; i++)
+  {
+    digitalWrite(step, LOW);
+    delayMicroseconds(delay);
+    digitalWrite(step, HIGH);
+  }
+}
+
+void spinner(int delay)
+{
+  // digitalWrite(dir, LOW);
+  int i = 0;
+  while (i < 1000)
+  {
+    i++;
+    digitalWrite(step, LOW);
+    delayMicroseconds(delay);
+    digitalWrite(step, HIGH);
+  }
+}
+
+void betterspinner()
+{
+}
+
+int state = 0;
+int r = 0;
+int asdf = 0;
+
+void randomWink()
+{
+  // If at the end of travel go to the other end
+  if (stepper.distanceToGo() == 0)
+  {
+    if (r < 70)
+    {
+      stepper.setMaxSpeed(10000);
+      stepper.setSpeed(10000);
+      stepper.setAcceleration(10000);
+      NeoPixel.setPixelColor(0, NeoPixel.Color(0, 255, 0));
+      NeoPixel.setPixelColor(1, NeoPixel.Color(0, 255, 0));
+      NeoPixel.show();
+
+      if (state)
+      {
+        state = 0;
+        stepper.moveTo(stepper.currentPosition() + 5000);
+        r = random(100);
+      }
+      else
+      {
+        state = 1;
+        stepper.moveTo(stepper.currentPosition() - 5000);
+      }
+    }
+    else if (r < 90)
+    {
+      stepper.setMaxSpeed(10000);
+      stepper.setSpeed(10000);
+      stepper.setAcceleration(10000);
+
+      NeoPixel.setPixelColor(0, NeoPixel.Color(0, 255, 0));
+      NeoPixel.setPixelColor(1, NeoPixel.Color(0, 255, 0));
+      NeoPixel.show();
+      if (state)
+      {
+        state = 0;
+        stepper.moveTo(stepper.currentPosition() + 1000);
+        if (asdf == 10) {
+          r = random(100);
+        }
+      } else
+      {
+        state = 1;
+        stepper.moveTo(stepper.currentPosition() - 1000);
+      }
+      if (asdf < 10) {
+        asdf++;
+      } else {
+        asdf=0;
+      }
+    }
+    else
+    {
+      stepper.setMaxSpeed(200000);
+      stepper.setSpeed(20000);
+      stepper.setAcceleration(20000);
+      NeoPixel.setPixelColor(0, NeoPixel.Color(255, 0, 0));
+      NeoPixel.setPixelColor(1, NeoPixel.Color(255, 0, 0));
+      NeoPixel.show();
+
+      if (state)
+      {
+        state = 0;
+        stepper.moveTo(stepper.currentPosition() + 40000);
+        r = random(100);
+      } else
+      {
+        state = 1;
+        stepper.moveTo(stepper.currentPosition() - 40000);
+        
+      }
+    }
+  }
+
+  // stepper.runSpeed();
+  stepper.run();
+}
+/*
+void loop()
+{
+
+}
+*/
+
+
+void loop()
+{
+  randomWink();
+}
+

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