Diff: MainMenuScreen.h

Revision:

0:da2b8c7a1ec1

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MainMenuScreen.h	Mon May 11 15:25:52 2015 +0000
@@ -0,0 +1,122 @@
+/**
+@file MainMenuScreen.h
+
+*/
+#ifndef MAINMENUSCREEN_H
+#define MAINMENUSCREEN_H
+
+#include "ListController.h"
+#include "Inputs.h"
+
+/**
+@brief Displays the main menu on the LCD screen\n 
+@brief It is a list with four selectable options :\n
+@brief temperature, pressue , log and settings
+@author Augustine Kizito K
+@date April 2015
+*/
+
+
+
+class MainMenuScreen : public ListController
+{
+private:
+    bool changeScreen; // tracks if the user pressed a button that changes the screen
+    int nextScreen; // tracks whether the user wants to go to
+    //the previous screen or next screen
+
+    void onScrollUp(); // user pressed the scroll up button
+    void onScrollDown(); // user pressed the scroll down button
+    void onEnter(); // user pressed the enter button
+
+public:
+    /**
+    Creates an instance of the main menu screen
+    
+    */
+    MainMenuScreen()
+        :ListController( "MainMenu", // Title
+                         "Temperature", // Option 1
+                         "Pressure", // Option 2
+                         "Log", // Option 3
+                         "Settings", // Option 4
+                         4) // Number of Options
+    {};
+    /*
+    Manages the execution of the main menu screen
+    
+    @returns
+    0  - User selected option 1\n
+    1  - User selected option 2\n
+    2  - User selected option 3\n
+    3  - User selected option 4\n
+    
+    */
+    int start(); 
+
+
+};
+int MainMenuScreen::start()
+{
+
+
+    enterButton.mode(PullDown); // activate pull down resistor
+    upButton.mode(PullDown); // activate pull down resistor
+    downButton.mode(PullDown); // acivate pull down resistor
+
+    upButton.rise(this,&MainMenuScreen::onScrollUp); // call onScrollUp when the up button is pressed
+    downButton.rise(this,&MainMenuScreen::onScrollDown); // call onScrollDown when the down button is pressed
+    enterButton.rise(this,&MainMenuScreen::onEnter); // call onEnter when the enter button is pressed
+
+    // Launch the List Controller
+    ListController::showInfo();
+    changeScreen = false;
+
+    debounce.start(); // start the debouncing timer
+
+    while(!changeScreen) {
+
+        // mbed goes to sleep to save power
+        Sleep();
+    }
+
+    // detach all interrupts
+    upButton.rise(NULL);
+    downButton.rise(NULL);
+    enterButton.rise(NULL);
+    backButton.rise(NULL);
+
+    return nextScreen;
+}
+
+void MainMenuScreen::onScrollUp()
+{
+    if (debounceSuccess()) { // debouncing successful
+
+        ListController::scrollUp(); // scroll up
+        debounce.reset(); // reset the debounce timer
+    }
+}
+
+void MainMenuScreen::onScrollDown()
+{
+    if (debounceSuccess()) { // debouncing successful
+
+        ListController::scrollDown(); // scroll down
+        debounce.reset(); // reset the debounce timer
+    }
+}
+
+void MainMenuScreen::onEnter()
+{
+    if (debounceSuccess()){ // debouncing successful
+    // sound the buzzer
+    playSound();
+    nextScreen = ListController::getCurrentOption(); //  get the option that user selected
+    changeScreen = true; // user wants to go to a different screen
+    // reset the debounce timer
+    debounce.reset();
+    }
+}
+
+#endif
\ No newline at end of file