Google Code-in

Background

We try to showcase the capabilities of the Lab and the robots with interesting programs.

This is a NEPO task, make sure to read the info.

Task

write a program for the Calliope simulator, that allows you to check whether another person knows a secret code.

• the program enters "learn mode", if the button A is pressed for more than 2 sec.
• now the program can learn a secret key: press A and B for a secret pattern.
• "learn mode" ends, if the button A is pressed for more than 2 sec.

• "learn mode" cannot be entered twice.

• the program enters "identify mode", if the button B is pressed for more than 2 sec.

• now somebody can show, that he/she knowe the secret.
• the led turns green or red, depending on the result
• By pressing button B for more than 2 sec, the "identify mode" is entered again.

Deliverables

A working program.