https://github.com/neu-rah/ArduinoMenu/issues/148

keypad test and example

Author: neu-rah

examples/keypad/keypad/keypad.ino

@@ -10,15 +10,20 @@
 using namespace Menu;
 
 //define your keyboard ------------------------------------
-const byte ROWS = 1; //four rows
+const byte ROWS = 4; //four rows
 const byte COLS = 4; //four columns
 //define the cymbols on the buttons of the keypads
-char hexaKeys[ROWS][COLS] = {{'+','-','*','/'}};
-byte rowPins[ROWS] = {2}; //connect to the row pinouts of the keypad
-byte colPins[COLS] = {3,4,5,6}; //connect to the column pinouts of the keypad
+char hexaKeys[ROWS][COLS] = {
+  {'1','2','3','A'},
+  {'4','5','6','B'},
+  {'7','8','9','-'},
+  {'/','0','*','+'},
+};
+byte rowPins[ROWS] = {6,7,8,9}; //connect to the row pinouts of the keypad
+byte colPins[COLS] = {2,3,4,5}; //connect to the column pinouts of the keypad
 
 //initialize an instance of class NewKeypad
-Keypad customKeypad = Keypad( makeKeymap(hexaKeys), rowPins, colPins, ROWS, COLS);
+Keypad customKeypad( makeKeymap(hexaKeys), rowPins, colPins, ROWS, COLS);
 
 //define a menu -----------------------------------------------------
 char* constMEM hexDigit MEMMODE="0123456789ABCDEF";
@@ -59,4 +64,5 @@ void setup() {
 
 void loop() {
   nav.poll();
+  delay(100);
 }

library.properties

@@ -1,5 +1,5 @@
 name=ArduinoMenu library
-version=4.6.2
+version=4.6.3
 author=Rui Azevedo, [email protected]
 maintainer=neu-rah, [email protected]
 sentence=Generic menu/interactivity system

src/menuIO/keypadIn.h

@@ -21,28 +21,15 @@ using
       char key=0;
       Keypad& in;
       keypadIn(Keypad& in):in(in) {}
-      int available(void) {return peek()!=0;}
-      int peek(void) {
-        int ret;
-
-        if (key) {
-          return key;
-        } else {
-          key = (int)in.getKey();
-          if (key) {
-            return key;
-          } else {
-            return -1;
-          }
-        }
-      }
+      int available(void) {return peek()!=-1;}
+      int peek(void) {return key?key:(key=in.getKey())?key:-1;}
       int read() {
         if (key) {
           char k=key;
           key=0;
           return k;
         }
-        return peek();
+        return available()?read():-1;
       }
       void flush() {}
       size_t write(uint8_t v) {return 0;}