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--- user:jmendoza:portfolio:datacomm1 [2013/12/10 19:02] – created jmendoza
+++ user:jmendoza:portfolio:datacomm1 [2013/12/13 02:26] (current) – [Execution] jmendoza
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+======Project: Binary 4 bit counter======
+A project for Data communications by i and i alone during fall 2013.
+This project was begun on 9/22/2013 and is anticipated to take about a week.
+=====Objectives=====
+The purpose of this project is to track and better understand the relationship between a processor and the modules that exist outside of it's native system by way of invoking a program.
+The out come should be four blinking LEDs that count to sixteen in binary and then stop.
+Knowing how bad I fail at this noise I'm sure I will try many methods that do not work at all before getting close.
+=====Prerequisites=====
+In order to successfully accomplish/perform this project, the listed resources/experiences need to be consulted/achieved:
+  * [[This|https://projects.drogon.net/raspberry-pi/gpio-examples/tux-crossing/gpio-examples-1-a-single-led/]]
+  * mah hed
+=====Background=====
+Now that the blinky kerjigger is doing this the next logical step must be to have it do something useful.
+This thing is ultimately going to be used as a means of communication I will attempt to have it communicate...things....
+Binary counter it is!
+different colors even
+such lights
+much count
+very code
+wow
+=====Scope=====
+The focus of this will be to forgo the the monitor all together and have the pi communicate with the user by, what has become, unconventional means.
+=====Attributes=====
+I hope to gain the following knowledge from this project:
+  * binarium: Will find a clever way to perform binary conversions and translate that to the GPIO standards.
+  * GPIO: Since I will be wrastling with these things I hope to gain a deeper understanding of how the system interacts with this aspect of itself.
+  * Attractiveness: this will be so awesome it will make my wife's clothes fall off.
+=====Procedure=====
+So I fell flat on my face, tried one to many times to get all fancy with the code and the loops and all that noise.
+went in and made things as simplistic as conceivably possible even if it ended up not looking rally like any of the code we are accustomed to
+Pretty proud of the streamlinedness :)
+=====Code=====
+<code c>
+ #include "RPI.h"
+int count;
+int a,b,c,d,e,f,g,y;
+int main()
+{
+        if(map_peripheral(&gpio) == -1)
+        {
+                fprintf(stdout, "Failed to map the physical GPIO registers into the virtual memory space. \n");
+                return(-1);
+        }
+        //Define pins as output
+        INP_GPIO(7);
+        OUT_GPIO(7);
+        INP_GPIO(9);
+        OUT_GPIO(9);
+        INP_GPIO(17);
+        OUT_GPIO(17);
+        INP_GPIO(10);
+        OUT_GPIO(10);
+        for(count=0;count<16;count++)
+        {
+                y = count/2;            //using modulus on the incrementing count
+                a = count%2;
+                b = y/2;                        //odd numbers produce a remainder triggering the LED's
+                c = y%2;
+                d = b/2;
+                e = b%2;
+                f = d/2;
+                g = d%2;
+                GPIO_SET = a << 17;          //setting LED's to trigger when the value of the variable = 1
+                GPIO_SET = c << 10;
+                GPIO_SET = e << 9;
+                GPIO_SET = g << 7;
+                sleep(1);
+                GPIO_CLR = a << 17;
+                GPIO_CLR = c << 10;
+                GPIO_CLR = e << 9;
+                GPIO_CLR = g << 7;
+                sleep(.5);
+        }
+</code>
+=====Reflection=====
+This was pretty sweet. I went through many different iterations of different techniques that I have come across since starting in computer science and tried, what I think is, a short and elegant iterative approach. Instead of getting all fancy with the loops I took Matt's advice and went to the core of the problem and ended up with a very simple binary conversion. Using a ton of variables it works and it is pretty adorable and very straight forward. Not entirely sure I have been more proud at how one of these projects has turned out.
+=====References=====
+In performing this project, the following resources were referenced:
+  * URL1
+  * URL2
+  * URL3 (provides useful information on topic)
+  * URL4
+Generally, state where you got informative and useful information to help you accomplish this project when you originally worked on it (from Google, other wiki documents on the Lab46 wiki, etc.)

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