Diff: key_4x4.cpp

Revision:

2:d0ae519c229c

Child:

3:8a7b6370956f

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/key_4x4.cpp	Mon Apr 06 04:59:45 2020 +0000
@@ -0,0 +1,59 @@
+/*
+ * Mbed Application program
+ *
+ * Copyright (c) 2020 Kenji Arai / JH1PJL
+ *  http://www7b.biglobe.ne.jp/~kenjia/
+ *  https://os.mbed.com/users/kenjiArai/
+ *      Created:    April      5th, 2020
+ *      Revised:    April      6th, 2020
+ */
+
+//  Pre-selection --------------------------------------------------------------
+#include    "select_example.h"
+//#define KEY4X4
+#ifdef KEY4X4
+
+//  Include --------------------------------------------------------------------
+#include "mbed.h"
+#include "Keypad.h"
+
+//  Definition -----------------------------------------------------------------
+
+//  Object ---------------------------------------------------------------------
+DigitalOut  my_led(LED1);
+Serial      pc(USBTX,USBRX);
+//              X    Y   Z   W    A   B   C   D   OUT(XYZW), IN(ABCD)
+Keypad      key(D10, D9, D8, D7, D6, D5, D4, D3);
+
+//  RAM ------------------------------------------------------------------------
+
+//  ROM / Constant data --------------------------------------------------------
+//                          X*A = *, X*B = 7, X*C = 4, X*D = 1
+//                          Y*A = 0, Y*B = 8, Y*C = 5, Y*D = 2
+//                          Z*A = #, Z*B = 9, Z*C = 6, Z*D = 3
+//                          W*A = A, W*B = B, W*C = C, W*D = D
+//                          key_table[0]=? is not used!
+const char *const key_table = "?*7410852#963ABCD";
+//                              1234567890123456
+
+//  Function prototypes --------------------------------------------------------
+
+//------------------------------------------------------------------------------
+//  Control Program
+//------------------------------------------------------------------------------
+int main()
+{
+    uint32_t key_num;
+    uint32_t counter = 0;
+
+    pc.printf("Start Key-Pad test\r\n");
+    while(true) {
+        while ((key_num = key.read()) != 0) {
+            pc.printf("%2u:[%2d] %c\r\n",
+                      counter++, key_num, *(key_table + key_num));
+        }
+        wait_us(100000);
+    }
+}
+
+#endif  // #ifdef KEY4X4
\ No newline at end of file