Diff: PressureScreen.h

Revision:

0:da2b8c7a1ec1

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/PressureScreen.h	Mon May 11 15:25:52 2015 +0000
@@ -0,0 +1,142 @@
+/**
+@file PressureScreen.h
+
+*/
+
+#ifndef PRESSURESCREEN_H
+#define PRESSURESCREEN_H
+
+#include "ListController.h"
+#include "Inputs.h"
+#include "Outputs.h"
+
+/**
+
+@brief Displays the pressure options on the LCD screen \n
+@brief It is a list with two selectable options :\n
+@brief view prs and plot prs\n
+@brief view prs shows the current pressure along with the sentiment\n
+@brief prs plot plots the pressure against time on the LCD screen at various intervals\n
+@author Augustine Kizito K
+@date April 2015
+
+*/
+
+
+
+class PressureScreen : public ListController // inherit the list Controller properties
+{
+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
+    void onBack(); // user pressed the back button
+
+public:
+    /**
+    Creates an instance of the pressure screen
+    
+    */
+    PressureScreen()
+        :ListController( "Pressure", // Title
+                         "View Prs", // Option 1
+                         "Prs Plot", // Option 2
+                         "", // Option 3
+                         "", // Option 4
+                         2) // Number of Options
+    {};
+    /**
+    Manages the execution of the pressure screen
+    
+    @returns
+    
+    -1 - Navigate to previous screen\n
+    0  - User selected option 1\n
+    1  - User selected option 2
+    */
+    int start(); 
+
+
+};
+
+int PressureScreen::start()
+{
+
+    // Activate PullDown Resistors
+    enterButton.mode(PullDown);
+    upButton.mode(PullDown);
+    downButton.mode(PullDown);
+    backButton.mode(PullDown);
+
+    upButton.rise(this,&PressureScreen::onScrollUp); // call onScrollUp when the up button is pressed
+    downButton.rise(this,&PressureScreen::onScrollDown); // call onScrollDown when the down button is pressed
+    enterButton.rise(this,&PressureScreen::onEnter); // call onEnter when the enter button is pressed
+    backButton.rise(this,&PressureScreen::onBack); // call onBack when the back button is pressed
+
+    // Launch the List Controller
+    ListController::showInfo();
+    changeScreen = false;
+
+    debounce.start(); // start the debounce 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 PressureScreen::onScrollUp()
+{
+    if (debounceSuccess()) {  // check if debouncing succeeded
+
+        ListController::scrollUp(); // scroll up
+        debounce.reset(); // reset the debounce timer
+    }
+}
+
+void PressureScreen::onScrollDown()
+{
+    if (debounceSuccess()) { // check if debouncing succeeded
+
+        ListController::scrollDown(); // scroll down
+        debounce.reset(); // reset the debounce timer
+    }
+}
+
+void PressureScreen::onEnter()
+{
+    if (debounceSuccess()) { // check if debouncing succeeded
+        // sound the buzzer
+        playSound();
+        nextScreen = ListController::getCurrentOption(); //  get the option that user selected
+        changeScreen = true; // user wants to go to a different screen
+        debounce.reset(); // reset the debounce timer
+    }
+}
+
+void PressureScreen::onBack()
+{
+    if(debounceSuccess()) {
+      // sound the buzzer
+      playSound();
+      nextScreen = -1; // go to previous screen
+      changeScreen = true; // user wants to go to a different screen
+      debounce.reset();
+    }
+
+}
+
+#endif
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