Gert Jan Schoneveld
Fork without short circuits
No extra hardware is needed besides the wires and switches. The columns are outputs configured with open drain. The rows are inputs configured with pull up resistors. A key press pulls down its row. With scanning the column is determined thereafter.
See SaveKeypad for an example usage.
Revisions of keypad.h
| Revision | Date | Message | Actions |
|---|---|---|---|
| 13:fb6929fac0db | 2012-11-04 | Added support for polling multiple keys at the same time | File Diff Annotate |
| 11:a45e64141ce6 | 2012-11-03 | Added support for polling. | File Diff Annotate |
| 10:9a9ec143840b | 2012-11-02 | A fork without short circuits | File Diff Annotate |
| 9:e48ba5b4c497 | 2012-01-31 | (none) | File Diff Annotate |
| 8:6f46334b16b7 | 2012-01-31 | (none) | File Diff Annotate |
| 7:e57b8ffc45d1 | 2012-01-31 | (none) | File Diff Annotate |
| 6:8e4267765923 | 2012-01-31 | (none) | File Diff Annotate |
| 5:45ab3e412893 | 2012-01-30 | Documentation | File Diff Annotate |
| 4:b24cd656a23d | 2012-01-30 | Documentation, Link | File Diff Annotate |
| 3:ecd4bb97a033 | 2012-01-30 | Documentation | File Diff Annotate |
| 2:2e4900821a28 | 2012-01-30 | Documentation | File Diff Annotate |
| 1:b5eee44fa8a2 | 2012-01-30 | Library dependency | File Diff Annotate |
| 0:2df66331c109 | 2012-01-30 | Initial published version | File Diff Annotate |