<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: Seeing The Light (STL2)======

=====OBJECTIVE=====
Time to explore optimizing our logic further, through the use of a loop and demonstrating the effectiveness of our logic by scaling up the number of LEDs in our counter (to at least 8).

=====PROCESS=====
Do note, the productive way to go about this project involves taking the following steps:

  * starting early
  * reading the project page
  * asking questions regarding things you do not know, are not clear on, or are confused about
  * as information, concepts, processes become clear, that is something you can contribute to the project documentation (so you can better remember)

If you start too late, and do not ask questions, and do not have enough time and don't know what is going on, you are not doing the project correctly.

=====TASK=====
After exploring, assembling, and testing the intended circuit (8+ LEDs), adapt the provided C code to use the bank of connected LEDs to count in binary from 00000000 to at least 11111111 (0 to 255).

Using the current value of count, your task is to make use of ONE **if** statement and copious use of **bitwise logic** to determine from an ongoing count the state of the individual bits.

It is your task to write a C program that interfaces successfully with the eight or more independently connected LED circuits, arranged in some orientation to ascertain an order or positioning, where your program will (in endless fashion, or until being manually interrupted) display a count (in binary) of values from 0 to at least 255 (then rollover, or reset).

If "1" means the LED in that position is ON, and "0" means the LED in that position is OFF, then you want to write a program that performs the following progression (over and over again):

<code>
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 1
0 0 0 0 0 0 1 0
0 0 0 0 0 0 1 1
0 0 0 0 0 1 0 0
0 0 0 0 0 1 0 1
0 0 0 0 0 1 1 0
0 0 0 0 0 1 1 1
0 0 0 0 1 0 0 0
. . .
1 1 1 1 1 0 0 1
1 1 1 1 1 0 1 0
1 1 1 1 1 0 1 1
1 1 1 1 1 1 0 0
1 1 1 1 1 1 0 1
1 1 1 1 1 1 1 0
1 1 1 1 1 1 1 1   <-- 255, the maximum value to display when there are 8 bits/LEDs
0 0 0 0 0 0 0 0   <-- 0, we "roll over" and start again
0 0 0 0 0 0 0 1
0 0 0 0 0 0 1 0
. . .
</code>

=====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>

=====Components and wiring=====

An example of one way to wire up the LED bar:

{{:haas:fall2019:c4eng:projects:ledbar.png?400|}}

=====EDIT=====
You will want to go [[/notes/c4eng/fall2024/projects/stl2|here]] to edit and fill in the various sections of the document:

  * [[/notes/c4eng/fall2024/projects/stl2|https://lab46.g7n.org/notes/c4eng/fall2024/projects/stl2]]

{{page>notes:c4eng:fall2024:projects:stl2&nouser&nodate&nomdate}}


=====STRATEGY=====
The general flow of the process (one way of going about it, anyway) can be described as follows:

<code>
SET COUNTER TO ZERO
REPEAT INFINITELY:
    SET PLACE TO ONE
    REPEAT UNTIL PLACE IS GREATER THAN EIGHT:
        SHOULD THE PLACE POSITION HAVE A ONE:
            ACTIVATE THE PLACE’S LED
        OTHERWISE:
            DEACTIVATE THE PLACE’S LED

        LET PLACE BECOME THE NEXT PLACE POSITION
    KEEP GOING

    PAUSE FOR HUMAN PERCEPTION
    LET THE COUNTER BE INCREMENTED BY ONE
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>
91:stl2:final tally of results (91/91)
*:stl2:used grabit to obtain project by the Sunday prior to duedate [13/13]
*:stl2:clean compile, no compiler messages [13/13]
*:stl2:program conforms to project specifications [13/13]
*:stl2:uses at least eight LEDs for the binary counter [13/13]
*:stl2:program uses only one selection structure in loop to do task [26/26]
*:stl2:code tracked in lab46 semester repo [13/13]
</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