<WRAP centeralign round box>
<WRAP><color red><fs 200%>Corning Community College</fs></color></WRAP>
<WRAP><fs 150%>ENGR1050 C for Engineers</fs></WRAP>
</WRAP>

======PROJECT: Voltage and Circuit Control (VCC1)======

=====OBJECTIVE=====
To continue our exploration of interfacing electronics with our pi's, and writing a program that controls it, and collaboratively authoring and documenting the project and its specifications.

=====GRABIT=====
To assist with consistency across all implementations, data files for use with this project are available on lab46 via the **grabit** tool. Be sure to obtain it and ensure your implementation properly works with the provided data.

<cli>
lab46:~/src/SEMESTER/DESIG$ grabit DESIG PROJECT
</cli>

=====OVERVIEW=====
Your task is to expand upon last week's project by scaling it to six independently GPIO-controlled LEDs, optimize the binary counting process with a loop and bitwise logic, and to incorporate a button, which will influence the direction of counting (normal upward flow when not pressed, reverse flow during a button press).

Contributing to project documentation is also a core part of this project. If from reading the existing documentation or through your own exploring, you find something lacking, unclear, or outright missing, that is an opportunity to potentially contribute content.

You want the project documentation to provide you (as if coming in with no awareness of the project) with sufficient information so as to allow you to proceed. Asking questions on the discord is a great way of getting more information that you can use to add content.
=====EDIT=====
You will want to go [[/notes/c4eng/fall2022/projects/vcc1|here]] to edit and fill in the various sections of the document:

  * [[/notes/c4eng/fall2022/projects/vcc1|https://lab46.g7n.org/notes/c4eng/fall2022/projects/vcc1]]

{{page>notes:c4eng:fall2022:projects:vcc1&nouser&nodate&nomdate}}

====pseudocode====

<code>
SET COUNTER TO ZERO
AS LONG AS PROGRAM CONTINUES TO RUN:

    SET VALUE TO CURRENT NUMBER STORED IN COUNTER
    
    LOOKING AT BITS RANGING FROM NUM_LEDS MINUS ONE TO ZERO:
    
        SET PLACEVALUE TO TWO RAISED TO THE BIT BEING LOOKED AT
        SHOULD VALUE ANDED WITH PLACEVALUE BE ONE:
            ENABLE PLACEVALUE'S LED
        OTHERWISE:
            DISABLE PLACEVALUE'S LED 
            
    NEXT LOOK (UNTIL DONE)
    
    SHOULD THE BUTTON BE PRESSED:
        UPDATE COUNTER TO BE ONE LESS THAN ITS CURRENT STATE
        SHOULD THE COUNTER GO BELOW ZERO:
            RESET COUNTER TO TWO RAISED TO NUM_LEDS

    OTHERWISE:
        UPDATE COUNTER TO BE ONE GREATER THAN ITS CURRENT STATE
        SHOULD THE COUNTER EXCEED FIFTEEN:
            RESET COUNTER TO ZERO

KEEP GOING
</code>

=====SUBMISSION=====
To be successful in this project, the following criteria (or their equivalent) must be met:

  * Project must be submit on time, by the deadline.
    * Late submissions will lose 33%  credit per day, with the submission window closing on the 3rd day following the deadline.
  * All code must compile cleanly (no warnings or errors)
    * Compile with the **-Wall** and **--std=gnu18** compiler flags
    * all  requested functionality  must conform  to stated  requirements (either on  this document or  in a comment banner in  source code files themselves).
  * Executed programs must display in a manner similar to provided output
    * output  formatted,  where applicable,  must match  that of  project requirements
  * Processing must be correct based on input given and output requested
  * Output, if applicable, must be correct based on values input
  * Code must be nicely and consistently indented
  * Code must be consistently written, to strive for readability from having a consistent style throughout
  * Code must be commented
    * Any "to be implemented" comments **MUST** be removed
      * these   "to  be  implemented"   comments,  if  still  present  at evaluation time, will result in points being deducted.
      * Sufficient  comments  explaining  the point  of  provided   logic **MUST** be present
  * No global variables (without instructor approval), no goto statements, no calling of main()!
  * Track/version the source code in your lab46 semester repository
  * Submit  a copy of  your source code to  me using the  **submit** tool (**make submit** on lab46 will do this) by the deadline.

====Submit Tool Usage====
Let's  say you  have completed  work  on the  project, and  are ready  to
submit, you  would do the following  (assuming you have a  program called
uom0.c):

<cli>
lab46:~/src/SEMESTER/DESIG/PROJECT$ make submit
</cli>

You should get some sort of confirmation indicating successful submission
if all went according to plan. If  not, check for typos and or locational
mismatches.

=====RUBRIC=====
I'll be evaluating the project based on the following criteria:

<code>
65:vcc1:final tally of results (65/65)
*:vcc1:used grabit to obtain project by the Sunday prior to duedate [10/10]
*:vcc1:picture of unpowered circuit to #desig for approval [10/10]
*:vcc1:picture of powered circuit to #desig showing results [10/10]
*:vcc1:clean compile, no compiler messages [7/7]
*:vcc1:program conforms to project specifications [22/22]
*:vcc1:code tracked in lab46 semester repo [6/6]
</code>

===Pertaining to the collaborative authoring of project documentation===

  * each class member is to participate in the contribution of relevant information and formatting of the documentation
    * minimal member contributions consist of:
      * near the class average edits (a value of at least four productive edits)
      * near the average class content change average (a value of at least 256 bytes (absolute value of data content change))
      * near the class content contribution average (a value of at least 1kiB)
      * no adding in one commit then later removing in its entirety for the sake of satisfying edit requirements
    * adding and formatting data in an organized fashion, aiming to create an informative and readable document that anyone in the class can reference
    * content contributions will be factored into a documentation coefficient, a value multiplied against your actual project submission to influence the end result:
      * no contributions, co-efficient is 0.50
      * less than minimum contributions is 0.75
      * met minimum contribution threshold is 1.00

===Additionally===

  * Solutions not abiding  by spirit of project will be  subject to a 50% overall deduction
  * Solutions  not  utilizing descriptive  why and  how comments  will be subject to a 25% overall deduction
  * Solutions not utilizing indentation to promote scope and clarity or otherwise maintaining consistency in code style and presentation will be subject to a 25% overall deduction
  * Solutions not organized and easy to  read (assume a terminal at least 90 characters wide, 40 characters tall)  are subject to a 25% overall deduction