Initial 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"
+    ]
+}

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:leonardo]
+platform = atmelavr
+board = leonardo
+framework = arduino
+lib_deps = 
+	xreef/PCF8574 library@^2.2.0
+	ellsclytn/Rotary@0.0.0-alpha+sha.d1fef10209

src/main.cpp

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+//Need to create an array to house all of the button states. Define the array using a variable so I can just change a number at the top of the code.
+
+#include "Arduino.h"
+#include "PCF8574.h"
+#include "Rotary.h"
+
+//Setup I/O Expander Chips
+PCF8574 pcf1(0x20);
+//PCF8574 pcf2(0x38);
+//Setup Rotary Encoders
+Rotary r1 = Rotary(4, 5);
+
+//setup variables
+//numPCFButtons is greater than 8, its expected to be using 2 PCF8572 chips (multiples of 8)
+int numPCFButtons = 8;
+//int numPCFButtons = 16;
+unsigned long btnTime[32] = {0};
+unsigned long btnPressedTime[8] = {0};
+int btnState[32] = {0};
+const unsigned long gButtonDelta = 15;
+const unsigned long gButtonPressedDelta = 100;
+/*
+  #define int RELEASED 0
+  #define int PRESSSED 1
+  #define int HOLD 1
+*/
+
+void setup() {
+
+  pinMode(LED_BUILTIN, OUTPUT); //debug LED
+
+  Serial.begin(9600);
+  while (!Serial);  // Leonardo needs this in order to see serial output at startup
+  
+  //INIT Rotary Encoder
+  r1.begin(true);
+
+  //INIT PCF8574
+  pcf1.begin();
+
+  //Set pins to input
+  for (int i = 0; i < 8; i++) {
+    pcf1.pinMode(i, INPUT);
+  }
+
+  //Ensure all pins are set to LOW
+  for (int i = 0; i < 8; i++) {
+    pcf1.digitalWrite(i, LOW);
+  }
+  
+  Serial.println("Ready");
+}
+
+void processBtn1(int i) {
+  //wait a bit before checking the button state again
+  if (millis() >= btnTime[i]) {
+    //is a button being pressed?
+    uint8_t val = pcf1.digitalRead(i);
+    if (val == HIGH) {
+      switch (i) {
+        //  case 0:
+        //    specialBtnAlwaysOn(i);
+        //    break;
+        //  case 1:
+        //    specialBtnAlwaysOn(i);
+        //    break;
+        //  case 2:
+        //    specialBtnAlwaysOn(i);
+        //    break;
+        default:
+          //Set the timer + gButtonDelta milliseconds (to prevent checking button state too often)
+          btnTime[i] = millis() + gButtonDelta;
+          //Are we still pressing the button? If so, skip checking for the button state
+          if (btnState[i] == 0) {
+            //joystick.button(i).push
+            //Start Debug Code
+            digitalWrite(LED_BUILTIN, HIGH);
+            Serial.write("Button: ");
+            Serial.print(i);
+            Serial.println(" PRESSED");
+            //End Debug Code
+            //set btnState to show we've pressed the button
+            btnState[i] = 1;
+          }
+          break;
+      }
+      //If the button is past its check time and the button isn't pressed
+    } else if ((btnState[i] != 0) && (millis() >= btnTime[i])) {
+      switch (i) {
+        //case 0:
+        //  Serial.println("Special BTN LOW");
+        //  digitalWrite(LED_BUILTIN, LOW);
+        //  btnState[i] = 0;
+        //  break;
+        default:
+          //joystick.button(i).letgo
+          //Start Debug Code
+          digitalWrite(LED_BUILTIN, LOW);
+          Serial.write("Button: ");
+          Serial.print(i);
+          Serial.println(" DEPRESSED");
+          //End Debug Code
+          //Reset variables to 0
+      }
+      btnTime[i] = 0;
+      btnState[i] = 0;
+
+    }
+  }
+}
+
+void specialBtnOnStart(int i) {
+  //this sample assumes the button is pressed during startup
+  //once the button is not pressed any more, it will simulate a button press.
+  //****NEEDS TO BE VERIFIED****
+  
+  btnTime[i] = millis() + gButtonDelta;
+
+  if (btnState[i] == 0) {
+    //joystick.button(i).push
+    //Start Debug Code
+    digitalWrite(LED_BUILTIN, HIGH);
+    Serial.println("Special BTN HIGH");
+    //set the button state to indicate the button is pressed
+    btnState[i] = 2;
+    btnPressedTime[i] = millis() + gButtonPressedDelta;
+  }
+
+  if ((btnState[i] == 2) && (millis() >= btnPressedTime[i])) {
+    digitalWrite(LED_BUILTIN, LOW);
+    Serial.println("Special BTN DONE");
+    btnState[i] = 3;
+  }
+}
+
+
+void specialBtnAlwaysOn(int i) {
+  //This is a sample function that shows how to simulate a button press.
+  //This is mainly for always on switches. When you turn the switch on, it will simulate a button press
+  //****NEEDS TO BE VERIFIED****
+  btnTime[i] = millis() + gButtonDelta;
+
+  if (btnState[i] == 0) {
+    //joystick.button(i).push
+    //Start Debug Code
+    digitalWrite(LED_BUILTIN, HIGH);
+    Serial.println("Special BTN HIGH");
+    //set the button state to indicate the button is pressed
+    btnState[i] = 2;
+    btnPressedTime[i] = millis() + gButtonPressedDelta;
+  }
+
+  if ((btnState[i] == 2) && (millis() >= btnPressedTime[i])) {
+    digitalWrite(LED_BUILTIN, LOW);
+    Serial.println("Special BTN DONE");
+    btnState[i] = 3;
+  }
+}
+
+
+void loop()
+{
+  //Start PCF8574 Button pressed detection section
+  for (int i = 0; i < numPCFButtons; i++) {
+      processBtn1(i);
+  }
+  
+    //Rotary Encoder
+    unsigned char en1 = r1.process();
+    if (en1) {
+      //Serial.println(en1 == DIR_CW ? "Right" : "Left");
+      if (en1 == DIR_CW) {
+        Serial.println("RIGHT");
+        btnState[9] = 1;
+        btnTime[9] = millis() + gButtonDelta;
+        digitalWrite(LED_BUILTIN, LOW);
+        digitalWrite(LED_BUILTIN, HIGH);
+      } else {
+        Serial.println("LEFT");
+        btnState[9] = 1;
+        btnTime[9] = millis() + gButtonDelta;
+        digitalWrite(LED_BUILTIN, LOW);
+        digitalWrite(LED_BUILTIN, HIGH);
+      }
+    }
+
+    if (btnState[9] == 1) {
+      if (millis() >= btnTime[9]) {
+      Serial.println("Encoder Off");
+      digitalWrite(LED_BUILTIN,LOW);
+        btnState[9] = 0;
+      }
+    }
+
+  //End PCF8574 Button Pressed detection section
+}
+
+
+
+
+
+
+
+
+
+
+
+
+
+/*
+  time = millis();
+  Serial.println(time);
+  delay(500);
+*/
+
+/*
+  for (int i = 0; i<8; i++) {
+    if (pcf1.digitalRead(i) == HIGH){
+      digitalWrite(LED_BUILTIN,HIGH);
+      delay(50);
+    } else {
+      digitalWrite(LED_BUILTIN,LOW);
+    }
+  }
+*/

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