Initial commit

.gitattributes

@@ -0,0 +1,2 @@
+# Auto detect text files and perform LF normalization
+* text=auto

.gitignore

@@ -0,0 +1,5 @@
+.pio
+.vscode/.browse.c_cpp.db*
+.vscode/c_cpp_properties.json
+.vscode/launch.json
+.vscode/ipch

.vscode/extensions.json

@@ -0,0 +1,7 @@
+{
+    // See http://go.microsoft.com/fwlink/?LinkId=827846
+    // for the documentation about the extensions.json format
+    "recommendations": [
+        "platformio.platformio-ide"
+    ]
+}

include/README

@@ -0,0 +1,39 @@
+
+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

@@ -0,0 +1,46 @@
+
+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

@@ -0,0 +1,17 @@
+; 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:nanoatmega328new]
+platform = atmelavr
+board = nanoatmega328
+framework = arduino
+lib_deps = 
+	paulstoffregen/Encoder@^1.4.1
+	marcoschwartz/LiquidCrystal_I2C@^1.1.4

src/backup.txt

@@ -0,0 +1,71 @@
+#include <Arduino.h>
+#include <Encoder.h>
+#include <LiquidCrystal_I2C.h>
+
+#define led_pin 5
+#define encoder_pin_a 2
+#define encoder_pin_b 3
+#define a_sec 1000000
+
+Encoder encoder(encoder_pin_a, encoder_pin_b);
+unsigned long encoder_timer = 0;
+
+float encoder_new = 0;
+float encoder_old = 0;
+float frequency = 0;
+unsigned int on_time = 100;
+boolean is_on = false;
+unsigned long timer;
+
+void setup() {
+  // put your setup code here, to run once:
+  Serial.begin(9600);
+  pinMode(led_pin, OUTPUT);
+  // Turn off pin 5
+  PORTD = PORTD & B11011111;
+  encoder_new = encoder.read();
+  encoder_old = encoder.read();
+  timer = micros();
+  encoder_timer = millis();
+}
+
+void loop() {
+  // Get encoder data
+  float encoder_new = float(encoder.read())/8;
+  if (encoder_new != encoder_old && millis() - encoder_timer > 100) {
+    float difference = encoder_new - encoder_old;
+    
+    frequency = frequency + pow(difference, 3);
+    encoder_old = encoder_new;
+
+  if(frequency < 0 || encoder_new < 0){
+    frequency = 0; 
+    encoder_new = 0; 
+    encoder_old = 0;
+  }
+    Serial.print(frequency, 4);
+    Serial.print(", ");
+    Serial.println(frequency*60 ,4);
+
+    encoder_timer = millis();
+  }
+
+  if(frequency != 0){
+    if(is_on == true){
+      // Wait a set amount of time and then turn the LED off
+      if(micros()-timer >= on_time){
+        PORTD = PORTD & B11011111;
+      }
+      // wait the rest of the off period then reset the clock
+      if((micros()-timer) >= a_sec/frequency - on_time){
+        is_on = false;
+        timer = micros();
+      }
+    }
+    else{
+      // Turn on the LED
+      PORTD = PORTD | B00100000;
+      is_on = true;
+    }
+  }
+}

src/main.cpp

@@ -0,0 +1,88 @@
+#include <Arduino.h>
+#include <Encoder.h>
+#include <LiquidCrystal_I2C.h>
+
+#define encoder_pin_a 2
+#define encoder_pin_b 3
+#define a_sec 1000000
+
+// LCD Address is 0x27
+LiquidCrystal_I2C lcd(0x27, 16, 2);
+
+Encoder encoder(encoder_pin_a, encoder_pin_b);
+unsigned long encoder_timer = 0;
+
+float encoder_new = 0;
+float encoder_old = 0;
+float frequency = 0;
+unsigned int on_time = 100;
+boolean is_on = false;
+unsigned long timer;
+
+void setup() {
+  // put your setup code here, to run once:
+  Serial.begin(9600);
+  pinMode(5, OUTPUT);
+  // Turn off pin 5
+  PORTD = PORTD & B11011111;
+  encoder_new = encoder.read();
+  encoder_old = encoder.read();
+  timer = micros();
+  encoder_timer = millis();
+
+  lcd.init();
+  lcd.clear();         
+  lcd.backlight();
+  lcd.setCursor(0,0);   //Set cursor to character 2 on line 0
+  lcd.print("Frequency:");
+  lcd.print(frequency);
+  
+  lcd.setCursor(0,1);   //Move cursor to character 2 on line 1
+  lcd.print("RPM:");
+  lcd.print(frequency*60);
+}
+
+void loop() {
+  // Get encoder data
+  float encoder_new = float(encoder.read())/8;
+  if (encoder_new != encoder_old && millis() - encoder_timer > 100) {
+    float difference = encoder_new - encoder_old;
+    
+    frequency = frequency + pow(difference, 3);
+    encoder_old = encoder_new;
+
+  if(frequency < 0 || frequency > 2000 || encoder_new < 0){
+    frequency = 0; 
+    encoder_new = 0; 
+    encoder_old = 0;
+  }
+    lcd.setCursor(0,0);   //Set cursor to character 2 on line 0
+    lcd.print("Frequency:");
+    lcd.print(frequency);
+  
+    lcd.setCursor(0,1);   //Move cursor to character 2 on line 1
+    lcd.print("RPM:");
+    lcd.print(frequency*60);
+
+    encoder_timer = millis();
+  }
+
+  if(frequency != 0){
+    if(is_on == true){
+      // Wait a set amount of time and then turn the LED off
+      if(micros()-timer >= on_time){
+        PORTD = PORTD & B11011111;
+      }
+      // wait the rest of the off period then reset the clock
+      if((micros()-timer) >= a_sec/frequency - on_time){
+        is_on = false;
+        timer = micros();
+      }
+    }
+    else{
+      // Turn on the LED
+      PORTD = PORTD | B00100000;
+      is_on = true;
+    }
+  }
+}

strobespace.code-workspace

@@ -0,0 +1,9 @@
+{
+	"folders": [
+		{
+			"name": "Stroboscope",
+			"path": "."
+		}
+	],
+	"settings": {}
+}

test/README

@@ -0,0 +1,11 @@
+
+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