V2.5

4ButtonKeypad/4ButtonKeypad.ino

@@ -18,7 +18,7 @@
 //#                                * EasyButton.h
 //#                                * HID-Project.h
 //# Author(s) : Zachery Seibel-Barnes and Anthony Seibel-Barnes
-//# Date      : 17/09/2022 (Ver 2.1)
+//# Date      : 23/09/2022 (Ver 2.2)
 //# Notes     : 1) Hardware: Buttons are defined as '1' to '4' from Top (furthest from USB lead) to Bottom (closest to USB lead)
 //#             2) IMPORTANT: A 'Button Press' action needs to have corresponding a 'Button Release' action (either 'implicidly defined' or as a generic 'release all')
 //#             2) Testing: To check parameters values (as generated by run code), use 'Serial Monitor' (Ctrl+Shft+M). Examples:
@@ -35,11 +35,16 @@
 //*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*
 //*********************************************
 
-//Includes
+//////////////////////
+//     LIBRARIES    //
+//////////////////////
 #include <EasyButton.h>   //Used to define a button and debounces it
 #include "HID-Project.h"  //Lets us simulate keyboard presses.
 
-//Pin Definitions. These numbers refer to the physical GPIO pins on the board
+//////////////////////
+//   DEFINITIONS    //
+//////////////////////
+//These PIN numbers refer to the physical GPIO pins on the board.
 //LEDS
 #define LED1 3
 #define LED2 5
@@ -52,20 +57,30 @@
 #define BUTTON3 A1
 #define BUTTON4 A0
 
-const int cintLedOffTime = 10000;     //LED 'OFF' time (milliseconds) is how long LED will remain on for after a button was pressed (For reference: 60,000 = 1 minute)
+//////////////////////
+// Global Constants //
+//////////////////////
+const int cintLedOffTime = 10000;       //LED 'OFF' time (milliseconds) is how long LED will remain on for after a button was pressed (For reference: 60,000 = 1 minute). This only relevant if 'cblnLEDsToDimCycle = False'.
 const int cintLedMaxBrightness = 100;   //LED Maximum brightness level (0 will be off, and 255 is brightest... like the SUN !!)
-const int cintLedDimmerStepTime = 10; //Time interval for LED Dimmer (milliseconds)
+const int cintLedMinBrightness = 1;     //LED Minimum brightness level (0 will be off, and 255 is brightest)
-const int cintLedDimmerStep = 1;      //Step interval for LED Dimmer (1 = slow fade ; 10 = quick fade)
+const int cintLedDimmerStepTime = 100;  //Time interval for LED Dimmer (milliseconds) (Higher=slow fade ; Lower=quick fade). NOTE: 'cintLedDimmerStep' is relative (linked) to this & will also influence how fast/slow actions occur.
+const int cintLedDimmerStep = 1;        //Step interval for LED Dimmer (1=very smooth fades ; >10=stepped fades). NOTE: 'cintLedDimmerStepTime' is relative (linked) to this and will also influence how fast/slow this action occurs.
+const bool cblnLEDsToDimCycle = true;   //Used to set when 'LEDs' are required to CYCLE back to Max after the LEDs are Minimised - even when NO Button Activity has occurred.
+                                        //When TRUE, it will (forever) cycle LEDS brightness - GRADUALLY cycling UP (using cintLedDimmerStep) from 'Mimimum' (cintLedMinBrightness) to 'Max ' (cintLedMaxBrightness),
+                                        //then 'Dimming' back down to the Mimimum.
+                                        //Whem FALSE, the LEDs will simply Dim to the Minimum (cintLedMinBrightness) until next button press.
 const int cintDebounceTime = 180;       //DebounceTime (milliseconds) is used with the 'Delay' function to pause code after a button press. This helps to slow 'extra' commands from
                                         //a Button like 'PASTING repeated data'). Increase the 'time' if wishing to 'hold' an action from happening (or repeating) for longer.
                                         //This is currently only used when 'blnDelayActions' is set to 'true'. If it is 'false', then the delay is effectively 'zero'.
-
+//////////////////////
+// Global Variables //
+//////////////////////
 unsigned long ledTickTime = 0; 
 unsigned long lastPressTime = 0; 
 uint8_t ledBrightness = cintLedMaxBrightness;
 bool blnLEDsOn = true;                  //Used to flag when 'LEDs' are ON at any Brightness level (ie. when LEDs are NOT off). Initated to True for initial illumination.
 bool blnButtonActivty = false;          //Used to flag when a Button action has actually occured. This is used primarily so it can correctly turn off LEDs after the specified activity time (ie. indirectly works with 'cintLedOffTime')
-
+bool blnLEDsAreCyclingUp = false;       //Only used when 'cblnLEDsDimCycle' is TRUE - It identifies when LEDs are in the process of 'Cycling UP' (to LEDs Max On) or when False they will 'Cycle Down' first.
 
 //Using the EasyButton library we create 4 buttons, with each button being connected to a GPIO pin as defined above, and having a 35ms debounce time. From memory, these do not have internal pullup
 //resistors, and are not inverted. Hence the two falses.
@@ -74,7 +89,12 @@ EasyButton button2(BUTTON2, 35, false, false);
 EasyButton button3(BUTTON3, 35, false, false);
 EasyButton button4(BUTTON4, 35, false, false);
 
-//Standard Arduino setup function. Code that only needs to run once goes here
+//*********************************************
+//*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*
+//*                 MAIN                      *
+//*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*
+//*********************************************
+//Standard Arduino setup function. Code that only needs to 'run once' goes here.
 void setup()
 {
   // Send a clean report to the host. This is important on any Arduino type.
@@ -102,10 +122,10 @@ void setup()
 
 //*********************************************
 //*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*
-//*                   MAIN                    *
+//*              MAIN LOOP                    *
 //*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*
 //*********************************************
-//Code that is runs constantly goes here
+//Code that is 'runs constantly' goes here.
 void loop() {
   //Reset 'Button Activity' flag (when False it sits in a wait-state for someone to press a button)
   blnButtonActivty=false;
@@ -159,7 +179,6 @@ void loop() {
     blnButtonActivty = ButtonReleaseAction(4,false);
   }
 
-
   //---------------------------------------------------------
   //--- LED Illumination: Full ON (when Button Activity)  ---
   //---------------------------------------------------------
@@ -176,64 +195,79 @@ void loop() {
         if(ledBrightness < cintLedMaxBrightness)
         {
             ledBrightness = cintLedMaxBrightness;
-       
-            analogWrite(LED1, ledBrightness);
-            analogWrite(LED2, ledBrightness);
-            analogWrite(LED3, ledBrightness);
-            analogWrite(LED4, ledBrightness); 
         }
-        //Set flag indicating that 'LEDs are ON' and reset 'LED ON timer'
-        blnLEDsOn = true;
         break;
+        
     default:
         // A 'Button Activty' HAS NOT Occurred. No need to do anything - This will also retain the 'lastPressTime' time value.
         break;
   }
   
   //---------------------------------------------------------
-  //--- LED Illumination: DIM to OFF (Standby)            ---
+  //---  LED Illumination: Minimised or DIMMING CYCLING   ---
   //---------------------------------------------------------
-  //If the LEDs are ON at ANY Brightness level (ie. LED NOT Off) .... Check timer since last Button Activity.
-  switch (blnLEDsOn)
-  {
-    case true:
-        //If MAX time has elapsed (for LEDs to be ON), then turn off LEDS
   if((millis() - lastPressTime) > cintLedOffTime)
   {
-          lastPressTime = 0;  //Reset (no button action)
+    //The maximun 'LED on' time has elapsed since the last Button Press (or initial on). Check if 'Dimming Cycling' is set to occur, otherwise simply MINIMISE LEDs.
-          ledBrightness = 0;  //LEDs Off
     
-          analogWrite(LED1, ledBrightness);
+    switch (cblnLEDsToDimCycle)                     //Global Constant 'cblnLEDsToDimCycle' determines if 'DIMMING CYCLING' occurs.
-          analogWrite(LED2, ledBrightness);
-          analogWrite(LED3, ledBrightness);
-          analogWrite(LED4, ledBrightness);
-          
-          //Set flag 'LEDs are OFF'
-          blnLEDsOn = false;          
-        }
-        else if(lastPressTime>0)
     {
-          //Check if certain time has elapsed, then adjust LEDs brightness (Dimmer)       
+      case true:
-          if ((millis() - ledTickTime) > cintLedDimmerStepTime)
+          //Call LED Dimming function (to Cycle LED Brightness)
+          ledBrightness = GetLEDsDimCycleValue(ledBrightness);
+          break;  
+      case false:
+          //If LEDs are ON (at ANY Brightness level ... LEDS should now be MINIMISED.
+          if(blnLEDsOn)
           {
-            ledTickTime = millis();
+            //MINIMISE LEDs: MAX time has ELAPSED for LEDs to be on Max Brightness.         
-
+            lastPressTime = 0;                      //Reset for 'No Button Activity'
-            if(ledBrightness > 0)
+            ledBrightness = cintLedMinBrightness;   //Set LEDs to 'Minimum Brightness'
-            {
-              ledBrightness = ledBrightness-cintLedDimmerStep;
-              analogWrite(LED1, ledBrightness);
-              analogWrite(LED2, ledBrightness);
-              analogWrite(LED3, ledBrightness);
-              analogWrite(LED4, ledBrightness);              
-            }
-          }
           }   
           break;
       default:
-        // LEDs are Off.... Do nothing
+          //Should not ever get here, but 'break' out just in case.
           break;
     }
+  }
 
+  //---------------------------------------------------------
+  //---                 WRITE LED Values                  ---
+  //---------------------------------------------------------     
+  if (blnLEDsOn)
+  {
+    //Write LED brightness level to the LEDs.
+    analogWrite(LED1, ledBrightness);
+    analogWrite(LED2, ledBrightness);
+    analogWrite(LED3, ledBrightness);
+    analogWrite(LED4, ledBrightness);
+  }
+
+  //---------------------------------------------------------
+  //---        RESET LED Variables for MAIN LOOP          ---
+  //--------------------------------------------------------- 
+  if(ledBrightness > cintLedMinBrightness)
+  {
+    //LED's ON:
+    if (!blnLEDsOn)
+    {
+      blnLEDsOn=true;
+    }    
+  }
+  else if(ledBrightness <= cintLedMinBrightness)
+  {
+    //LED's at MINIMUM: Minimun LED Brightness has been reached (this is considered as 'LED Off', but they may not be FULLY Off - it depends on the constant cintLedMinBrightness)
+    if (blnLEDsOn)
+    {
+      blnLEDsOn = false;
+    }
+
+    if (cblnLEDsToDimCycle)
+    {
+      //Reset the flag to begin 'LED cycle Up' process (This is only relevant when cblnLEDsToDimCycle = true)
+      blnLEDsAreCyclingUp = true;
+    }
+  }  
   // LOOP MAIN
 }
 
@@ -249,7 +283,10 @@ void loop() {
 //*                       only fail when the 'Button ID is not 1-6'.
 //* Returns   : 'True' if successful, otherwise 'False' where button is undefined.
 //* Parameters: 'intButtonNumber' - Corresponds to the Arduino Board button ID number.
-//* Prereqs   : Keyboard Library (HID-Project.h) should be set in MAIN PROGRAM
+//* Prereqs   : Requires the following Libraries set in the Main (Libraries) Code:
+//*                     *Keyboard Libray - HID-Project.h
+//*             Requires the following GLOBAL Contants or Variables set in the Main (Initialisation) Code:
+//*                     * Constant 'cintDebounceTime' specifies DELAY before preformaing additional buttion actions.
 //* Author    : A. Seibel-Barnes (from original source by Z. Seibel-Barnes)
 //* Date      : 17/09/2022 (Ver 1.0)
 //* Notes     : 'Keyboard.press' code options (examples for reference)
@@ -288,8 +325,9 @@ bool ButtonPressAction(int intButtonNumber)
     case 4:
       // DEFINITION: CUSTOM TEXT (Message)
       //Keyboard.println("Hi");
-      //Keyboard.println();
+      //Keyboard.println;
-      Keyboard.println("Just confirming that your item is in the mail (and may have already been delivered)... See pics.");
+      Keyboard.print("Tracking progress applies on business days as it processes through Postal and Customs facilities.");
+      //Keyboard.println("Just confirming that your item is in the mail (and may have already been delivered)... See pics.");
       //Keyboard.println();
       //Keyboard.println("Tracking is available via Australia Post: TMP40083004070052454xxxxx");
       //Keyboard.println("Tracking progress applies on business days as it processes through Australia Post facilities..");
@@ -327,6 +365,7 @@ bool ButtonPressAction(int intButtonNumber)
         break;
   }
   
+  //Return the fuctions result
   return blnButtonActioned;
 }
 
@@ -344,7 +383,7 @@ bool ButtonPressAction(int intButtonNumber)
 //* Parameters: 'intButtonNumber'   - Corresponds to the Arduino Board 'Button ID' number (1-6)
 //*             'blnReleaseALLKeys' - When 'true' it simply 'Releases ALL Keys' (and ignores the 'Button ID' since there are no specific Key-release requirements).
 //*                                   When 'false' it requires that specific Key(s) are implicidly released.
-//* Prereqs   : Keyboard Library (HID-Project.h) should be set in MAIN PROGRAM
+//* Prereqs   : Keyboard Library (HID-Project.h) should be set in the Main (Libraries) Code.
 //* Author    : A. Seibel-Barnes (from original source by Z. Seibel-Barnes)
 //* Date      : 17/09/2022 (Ver 1.0)
 //* Notes     : 'Keyboard.release' code options (for use when blnReleaseALLKeys = false)
@@ -399,5 +438,72 @@ bool ButtonReleaseAction(int intButtonNumber, bool blnReleaseALLKeys)
         break;
   }
 
+  //Return the fuctions result
   return blnButtonActioned;
 }
+
+//********************************************************************************************
+//*                         FUNCTION NAME: 'GetLEDsDimCycleValue'
+//********************************************************************************************
+//* Purpose   : Determines the LED Brightness 'Dimming Cycle' Value.
+//* Code Type : FUCTION CALL: C - Arduino Leonardo (Arduino IDE)
+//* Usage     : Can be called anytime. Function call example: ledBrightness = GetLEDsDimCycleValue(ledBrightness);
+//*             Where:  * 'GetLEDsDimCycleValue(ledBrightness)' calls the fuction and specifies the CURRENT LED Brigtness Value.
+//*                     * 'ledBrightness=' would receive the RETURN LED Brightness Value. 
+//* Returns   : An integer value to specify the new LED Brightness.
+//* Parameters: 'intCurrentLEDBrightnessValue' - Is the current / existing LED Brightness value.
+//* Prereqs   : Requires the following GLOBAL Contants or Variables set in the Main (Initialisation) Code:
+//*                     * Constant 'cblnLEDsToDimCycle' to be set to TRUE in MAIN PROGRAM (and evaluated as TRUE with an 'If or Switch Statement' in the main code)
+//*                     * Constant 'cintLedDimmerStep' is used to moderate the LED Brightness change (in steps)
+//*                     * Constant 'cintLedMinBrightness' specifies the MINIMUM LED brightness to DIM to.
+//*                     * Variable 'ledTickTime' keeps track of the LED Timer between LED Brightness value changes.
+//* Author    : A. Seibel-Barnes
+//* Date      : 23/09/2022 (Ver 1.0)
+//* Notes     : Live Long and Propser _\//
+//'**********************************************************************************************
+int GetLEDsDimCycleValue(int intCurrentLEDBrightnessValue)
+{
+    int intLEDBrightnessValue;              //LED brightness level to return to Main Code
+
+    intLEDBrightnessValue = intCurrentLEDBrightnessValue;
+    
+    //Begin to 'Cycle LED DIMMING' (Up or DOWN) - even if there has been NO Button Activity.
+    if(!blnLEDsAreCyclingUp)
+    {
+      //CYCLE LEDs DOWN: Adjust LEDs brightness Down. LEDs are not in the process of Cycling up to Max ... So, DIM LEDs brightness (slowly 'Dim step DOWN' to Off)       
+      if ((millis() - ledTickTime) > cintLedDimmerStepTime)
+      {
+        ledTickTime = millis();
+
+        if(intLEDBrightnessValue > cintLedMinBrightness)
+        {
+          intLEDBrightnessValue = intLEDBrightnessValue - cintLedDimmerStep;              
+        }
+      }
+    }    
+    else if(blnLEDsAreCyclingUp)
+    {
+      //CYCLE LEDs UP: Adjust LEDs brightness Up (slowly 'Dim step UP' to Max)    
+      if ((millis() - ledTickTime) > cintLedDimmerStepTime)
+      {
+        ledTickTime = millis();
+
+        if(intLEDBrightnessValue < cintLedMaxBrightness)
+        {
+          intLEDBrightnessValue = intLEDBrightnessValue + cintLedDimmerStep;            
+        }
+        else if(intLEDBrightnessValue >= cintLedMaxBrightness)
+        {
+          //Max LED Brightness has been reached (Reset the flag to begin 'LED cycle Down' process)
+          blnLEDsAreCyclingUp = false;  
+        }
+      }
+    }
+    else if(intLEDBrightnessValue = cintLedMaxBrightness)
+    {
+       blnLEDsAreCyclingUp = false;
+    }
+    
+  //Return the fuctions result
+  return intLEDBrightnessValue;
+}