1. Computer Science SS2013 Team 5 Final Presentation 26 June 2013 1© FH AACHEN | FACHBEREICH 08 | Computer Science, SS2013

2. Content Task description Requirements Concept Logic for the code 26 June 20132© FH AACHEN

3. Task Description Goals Develop a temperature logger on the AVR Butterfly board with the following features o Easy to use o Easy to maintain o Robust design o 5 Button operation (joystick) 26 June 20133© FH AACHEN

4. ATMEL AVR Butterfly ATmega169 Peripherals: ● 120 segment LCD ● 4 Mbit external DataFlash ● Programming Methods: Bootloader, SPI, Parallel, JTAG ● Joystick, 4 directions ● Piezo speaker ● 32768 Hz oscillator for real time clock ● RS232 level converter for PC ● Temperature sensor ● Light sensor ● 3V, 600 mA button cell battery 26 June 20134© FH AACHEN

5. Task division 26 June 20135© FH AACHEN 1)Project manager Ramiz Azadaliyev 2) Technical manager Pushkar Ranade 3) Quality manager Heiko Engemann 4) Documentation representative Vrushali Mulay, Hemanth Kumar Krishnamurthy 5) Integration manager Fritz Denninger

6. Requirements Task description Requirements Concept Logic for the code 26 June 20136© FH AACHEN

7. Requirements Must have features o LCD Output and Interface o Adjustable time measuring interval o Button/joystick functionality  Pause/interrupt  Continue  Enter/confirm  Cancel/Back o Data transfer via UART o Power-save-mode o Obtain/display time and temperature values from memory o Data type  Time: Long unsigned integer  Temperature: signed integer o Measuring all the time 26 June 20137© FH AACHEN

8. Content Task description Requirements Concept Logic for the code 26 June 20138© FH AACHEN

9. Concept Press button 5 for 5 sec (click-action of joystick) to enter the main menu Main menu: o Transfer data to PC o Reset o Obtain stored data from memory o Set the measuring interval o Pause Sleep-mode after 1 minute of no joystick input Sleep-mode exits any menu 26 June20139© FH AACHEN

10. Concept Main Menu Coming from a running/measuring device, which is in sleep mode, the user has 5 different modes to choose from: Transfer data Reset device Obtain data from memory Set interval Pause/continue 26 June 201310© FH AACHEN

11. Concept Transfer Data to PC 26 June 201311© FH AACHEN The user is able to transfer the data from the board to the PC

12. Concept Reset functionality While the device is running, the user is able to start a new measurement without changing the time interval 26 June 201312© FH AACHEN

13. Concept Display data from memory on LCD Can be done when the process is running or in pause-mode Starts with the latest data User can look through stored data using up/down joystick buttons 26 June 201313© FH AACHEN

14. Concept Start/set measuring temperature interval The user can adjust the temperature measurement interval in increments of 5 mins ranging from 5 min up to 24 hours Once set, the measurement cycle starts 26 June 201314© FH AACHEN

15. Concept: Pause/Continue The user is able to pause the device The current states will be saved (counters and timers) To continue, enter this menu and confirm 26 June 201315© FH AACHEN

16. Logic for the code Task description Requirements Concept Logic for the code 26 June 201316© FH AACHEN

17. Logic for the code: Example Pause/Continue 26 June 201317© FH AACHEN

18. Thank you for your attention! Questions? 26 June 2013 18© FH AACHEN