Display Interface/Infrastructure#

Standup Records #

There is a new interface, PercentageDisplay, defined in percentage-display.h

class PercentageDisplay
{
public:
    virtual ~PercentageDisplay() = default;
    virtual void show_percentage(double) = 0;
};

We have two implementations that show temperatures; put those under this interface.

Implement a Composite display.

Wire onto the breadboard

Write one test program demo/display-demo) that

instantiates both classes
Store pointers to both objects in a std::vector<PercentageDisplay*>
Enter a loop that changes the percentage shown on each periodically

That program is already there, in src_demos/main.cpp, together with much of the Display stuff. Clean it up.