IFD:Designing Networked Objects/César Felipe Daher: Difference between revisions

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@@ Line 81: / Line 81: @@
 [[File:LEDcommand_flowchart.png]]
-As an example for the columns:
+This logic was translated into the following function (for columns):
 <pre>
+//check is the retrieved tweet
 int findDirHor (String check) {
    if (check.indexOf("left") != std::string::npos && check.indexOf("right") != std::string::npos) {
      Serial.println("left and right");
-     return 0;]
+     return 0;
    } if (check.indexOf("right") != std::string::npos) {
      Serial.println("right");
@@ Line 98: / Line 99: @@
 }
 </pre>
+However, since the LEDs are declared in a 3x3 array, the indexes mustn't ever exceed 2 or go below 0. Therefore, the function for applying the index change was written taking these cases into consideration.
+<pre>
+//val is returned from the findDirHor() function
+void columnIndex (int val) {
+  if (j == 0 && val == -1) { j = 2;
+  } else if (j == 2 && val == 1) {  j = 0;
+  } else { j = j + val;
+  }}</pre>