Joachim Andersen
11
Diff: keypad.cpp
- Revision:
- 13:fb6929fac0db
- Parent:
- 12:e6623f165199
- Child:
- 14:f6c3647bf421
diff -r e6623f165199 -r fb6929fac0db keypad.cpp
--- a/keypad.cpp Sat Nov 03 23:43:46 2012 +0000
+++ b/keypad.cpp Sun Nov 04 09:49:35 2012 +0000
@@ -86,6 +86,35 @@
return r * col_count + c;
}
+int Keypad::DebouncedScanMultiple()
+{
+ /* debounce */
+ int key1 = ScanMultiple();
+
+ wait_ms(_debounce);
+
+ int key2 = ScanMultiple();
+
+ return key1 & key2;
+}
+
+int Keypad::ScanMultiple()
+{
+ int res = 0;
+
+ int i = 0;
+ for (int c = 0; c < col_count; c++) {
+ _cols = ~(1 << c);
+ for (int r = 0; r < row_count; r++) {
+ if (*_rows[r] == 0) {
+ res |= 1 << (r * col_count + c);
+ }
+ i++;
+ }
+ }
+
+ return res;
+}
void Keypad::_callback()
{