Tests forked Keypad library.
Dependencies: FPointer keypad mbed
Schematic:
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 keypad for the forked library used in this project.
Diff: keypad.lib
- Revision:
- 0:5410e5950602
- Child:
- 2:eaa3d23e9b29
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/keypad.lib Fri Nov 02 22:52:44 2012 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/gj_schoneveld/code/keypad/#9a9ec143840b