Senior Design / KeypadLib

Added hold down fix and debouncing(kinda)

Files at this revision

API Documentation at this revision

Revision 22:9ebfd71933e9, committed 2019-02-15

Comitter:
baet6458
Date:
Fri Feb 15 02:00:02 2019 +0000
Parent:
21:fb28bc08ded4
Commit message:
update library to handle hold downs and debouncing

Changed in this revision

keypad.cpp Show annotated file Show diff for this revision Revisions of this file 
--- a/keypad.cpp	Sun Sep 20 06:00:00 2015 +0000
+++ b/keypad.cpp	Fri Feb 15 02:00:02 2019 +0000
@@ -55,9 +55,13 @@
     //Scan rows and cols and return switch index
     for(int i=0; i<4; i++) {
         _rows = ~(0x01 << i);
-        for(int j=0; j<4; j++)
-            if (  !( (_cols.read()>> j )& 0x1 ))
+        for(int j=0; j<4; j++){
+            if (  !( (_cols.read()>> j )& 0x1 )){
+        		while (  !( (_cols.read()>> j )& 0x1 )){
+        		}
                 return  j + (i*4);
+            }
+        }
     }
     return -1;
 }