added notification example

README.md

@@ -30,4 +30,8 @@ See [Wiki - Callbacks](https://github.com/forntoh/LcdMenu/wiki/Example-03-Callba
 
 ### 04 Dynamic Menus
 
-See [Wiki - Dynamic Menu](https://github.com/forntoh/LcdMenu/wiki/Example-04-Dynamic-Menu)
+See [Wiki - Dynamic Menu](https://github.com/forntoh/LcdMenu/wiki/Example-04-Dynamic-Menu)
+
+### 05 Menu Notifications
+
+See [Wiki - Menu Notifications](https://github.com/forntoh/LcdMenu/wiki/Example-05-Menu-Notifications)

examples/DynamicMenu/DynamicMenu.ino

@@ -77,6 +77,7 @@ void loop() {
             break;
         case '*':
             createSubMenu();
+            break;
         default:
             break;
     }

examples/MenuNotifications/MenuNotifications.ino

@@ -1,3 +1,35 @@
+/*
+ Menu Notifications
+
+ This sketch demostrates how to display Notifications
+ using the LcdMenu library. After the specified time, the notification message
+ disappears. In this sketch When the # key is pressed, the notification displays
+ for two (2) seconds
+
+ N.B: You must call menu.updateTimer(); in the first line of the loop function
+
+ Circuit:
+ * Arduino Board
+ * Keypad pin 1 to digital pin 9
+ * Keypad pin 2 to digital pin 8
+ * Keypad pin 3 to digital pin 7
+ * Keypad pin 4 to digital pin 6
+ * Keypad pin 5 to digital pin 5
+ * Keypad pin 6 to digital pin 4
+ * Keypad pin 7 to digital pin 3
+ * Keypad pin 8 to digital pin 2
+ * LCD SLC pin to arduino SLC pin
+ * LCD SDA pin to arduino SDA pin
+
+ created 23 July 2020
+ by Forntoh Thomas
+
+ This example is in the public domain.
+
+ https://github.com/forntoh/LcdMenu/tree/master/examples/MenuNotifications/MenuNotifications.ino
+
+*/
+
 #include <Keypad.h>
 #include <LcdMenu.h>
 
@@ -9,28 +41,19 @@ char keys[4][4] = {{'1', '2', '3', 'A'},
                    {'4', '5', '6', 'B'},
                    {'7', '8', '9', 'C'},
                    {'*', '0', '#', 'D'}};
-                   
+
 // Configure keypad pins
 byte colPins[4] = {5, 4, 3, 2};
 byte rowPins[4] = {9, 8, 7, 6};
 
 extern MenuItem mainMenu[];
-extern MenuItem settingsMenu[];
 
 MenuItem mainMenu[] = {ItemHeader(),
                        MenuItem("Start service"),
                        MenuItem("Connect to WiFi"),
-                       ItemSubMenu("Settings", settingsMenu),
+                       MenuItem("Settings"),
                        MenuItem("Blink SOS"),
-                       MenuItem("Blink random"),
                        ItemFooter()};
-/**
- * Create submenu and precise its parent
- */
-MenuItem settingsMenu[] = {ItemSubHeader(mainMenu),
-                           MenuItem("Backlight"),
-                           MenuItem("Contrast"),
-                           ItemFooter()};
 
 LcdMenu menu(LCD_ROWS, LCD_COLS);
 
@@ -39,6 +62,13 @@ Keypad keypad = Keypad(makeKeymap(keys), rowPins, colPins, 4, 4);
 void setup() { menu.setupLcdWithMenu(0x27, mainMenu); }
 
 void loop() {
+    /**
+     * IMPORTANT: You must call this function for the notification to take time
+     * into account
+     */
+    menu.updateTimer();
+
+    // Listen to key
     char key = keypad.getKey();
     if (key == NO_KEY) return;
 
@@ -55,7 +85,13 @@ void loop() {
         case 'D':
             menu.back();
             break;
+        case '#':
+            // When the # key is pressed, the message displays for two seconds
+            showNotification();
+            break;
         default:
             break;
     }
-}
+}
+
+void showNotification() { menu.displayNotification("Success", 2000); }