Cookie Shakergecko655

This slide was made for Advanced OS

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Cookie clicker

• Launched on 2013/8/8

• Creator: Ortail

• Was in the topic in Japan around 2013/9

In the mbed

• mbed has a button, so I could use it for click but…

• mbed also has an accelerator, so let’s increase COOKIES by SHAKING mbed.

Detect shaking• The value of accelerator includes the effect of gravity, which is useless for detect shaking.

• I used jerk(躍度) (derivative of acceleration).

• I used schmitt trigger in the program.

• trigger is on if jerk > 175 [gravity/s] for 0.01ms

• trigger is off if jerk < 0.01 [gravity/s] for 0.01ms

• Shaking occurred when rising the trigger.

Gramma (BBA)• I think, Gramma (a.k.a BBA, ババア in Japan) is not so cute and I should change the character.

• Cookie, cookie, cookie..

Gramma (BBA)• I think, Gramma (a.k.a BBA, ババア in Japan) is not so cute and I should change the character.

• Cookie, cookie, cookie..

• Tippy!!

Dotted picture

• Tippy works to bake cookies in the LCD.

• Will show you in the demo.

Threads• Detecting accelerator shaking and increase cookies

• Increasing cookies at interval (baked by Tippies!)

• Buying Tippies by clicking button.

• Printing LCD

Communication between threads

• # of cookies has to be increased and decreased by 3 threads.

• Mutex is used.

Shaking

Buy tippy

Bake cookie in interval

Cookie

Increase 1

Decrease 10

Increase # of tippies in every 10 seconds

Thread priorities• User interactions (shaking detection and buying tippy) should have the highest priority.

• In mbed-RTOS, Ticker has the highest priority and I couldn’t change it.

• I wanted to use Ticker for drawing LCD every 0.1 seconds, but I used lower priority Thread to avoid this.

DEMO

Any questions?