In partiParticle C$++$ for a photon $2$ device.

DO PART III ONLY where you have to write code on firmware with two's complement

$2$ buttons $($with "lefty" connected to D$8$ and "righty" to D$6)$

In Fritzing, create a breadboard that represents the product

Arrange the LEDs in the order red, yellow, green, blue forming a horizontal line parallel to the long side of the breadboard

Arrange the buttons similarly.

Keep the board as compact as possible

Construct the circuit on a physical breadboard so that it resembles $($as closely as possible$)$ your Fritzing document

Plug in your Photon $2$

Write the firmware to print out "left" or "right" to the serial port, depending on whether the left or right button is pressed

With the USB port pointing away from you, the left button will be on your left

Flash the firmware to your Photon $2$

Verify that your left and right buttons are working appropriately

Part III: Project

Write the firmware so that the device has the following behavior.

As in lab$2,$ the LEDs will display digits $-8$ to $+7($using $2\text{'}$s complement$).$ You may need to review your CS $251$ notes to figure this out.

Each time the right button is pressed, the digit will increment. When $7$ is exceeded, roll around to $-8$

Each time the left button is pressed, the digit will decrement. Roll around from $-8$ to $7.$

While both buttons are pressed simultaneously, the LEDs will automatically count up or down $($up if the right button was pressed most recently, or no button had been pressed prior; down if the left button was pressed most recently$).$ Once one or both buttons are released the automatic counting will stop

The speed with which the LEDs animate during the counting process will be determined by reading in an input from the terminal $(a=$ very slow; $s=$ slow; $d=$ fast; $f=$ very fast$).$ You may choose the speeds, just make sure they are distinguishable from one another.

$//$ Define the pins for LEDs int blueLED $=$ D$0$; $//$ Repre $($LSB$)$

int greenLED $=$ D$1$;

int yellowLED $=$ D$2$;

int redLED $=$ D$3$; $\frac{,}{\frac{?}{?}}$ Repr

$($MSB$)$