Write BoneScript firmware to emulate a traffic light controller. You need three LEDs (red, yellow and green) for the traffic light, a 7-segment LED display for the pedestrian signal light and a pushbutton. Construct the circuit on a breadboard and run your program using Cloud9.

The correct sequence for traffic lights should be correctly emulated: RED GREEN YELLOW RED. Each LED should remain on for approximately 1 second. The pedestrian signal light should be off. If the pushbutton is pressed, then the following rules must be followed: Wait until Traffic Light == RED Traffic Light must stay RED Pedestrian Light counts down from 9 to 0 every second. It turns off after reaching 0. Wait for 1 second. Traffic Light = GREEN (normal sequence resumes)

All that is needed is help with the button pushing code, to stop the red light for the pedestrian crosswalk for 9 seconds.