1. The Guardian: Refrigerator Contents Tracker Bryant Lampano Western Washington University Electronics Engineering Technology [Type the company name] 2011-2012

2. System Software Design Overview  General System Software Design  Specifics on Software Design Kernal Tasks CPU Load  Dataflow Diagram  Module, Tasks, Function and Data list WWU Electronics Engineering Technology 2012

3. General System Software Design  MCU: Freescale MC9S12DP512 16-bit. – 512KB Flash EEPROM, 14KB RAM, 4KB EEPROM.  Bus frequency: 24MHz. – Maximum of 25MHz with 16MHz crystal.  Approximate memory requirements: ROM: ~12KB.  Includes µC/OS-II, final program and data storage. RAM: ~1KB.  Includes parameters and variables.  Resources used: 1 SPI port, 1 SCI port, I 2 C port, and 8 GPIO. WWU Electronics Engineering Technology 2012

4. System Software Design: Kernal  Kernal: µC/OS-II maintained by Micrium Inc. – Pre-emptive real-time kernal.  Resources used: – Semaphores, mutexes, time delays.  Tick period: 1ms  Task total: 4 – StartTask, KeyTask, UITask, RTCTask. WWU Electronics Engineering Technology 2012

5. System Software Design: Tasks  StartTask Enables all resources for Kernals, MCU and peripheral initializations. 4 th priority. Period: Once. Execution Time: 10ms  KeyTask Monitors keypad checking for new key press from the user 5 th priority. Period: 10ms. Execution Time: 0.1ms WWU Electronics Engineering Technology 2012

6. System Software Design: Tasks  RTCTask Provides accurate real time clock data used for date tagging with items 6 th priority. Period: 20ms Execution Time: 10ms  UITask Gathers and stores all information from the users input 7 th priority. Period: 200ms. Execution Time: 50ms WWU Electronics Engineering Technology 2012

7. System Software Design: Kernal WWU Electronics Engineering Technology 2012 Maximum CPU Load: 31% L max Average CPU Load: 15.5%

8. Dataflow Diagrams: KeyTask WWU Electronics Engineering Technology 2012

9. Dataflow Diagrams: Scan() WWU Electronics Engineering Technology 2012

10. Dataflow Diagrams: LCD Module WWU Electronics Engineering Technology 2012

11. Dataflow Diagrams: System WWU Electronics Engineering Technology 2012

12. Modules, Tasks, Functions and Data List WWU Electronics Engineering Technology 2012 ModuleTasks/ISRPublic Functions and DataAuthor(s) Main.cStartTask() UITask() DisplayTask() CurrentMessageBryant Lampano SPI.c-SPI_Open()Bryant Lampano Modified by Todd Morton RTC.c-RTCGetDate() IIC_Open() Bryant Lampano Modified by Todd Morton SoftTime.c-GetDate() SetDate() Bryant Lampano Modified by Todd Morton UcosKey.cKeyTask()KeyInit() KeyPend() Todd Morton ProgEeprom.c-ConfigECLKDIV() EESectModify() EESectErase() EEWordWrite() Todd Morton LCD.c-LCDPrompts()Bryant Lampano Modified by Todd Morton BasicIO.a12SCI1_Open() Getstrg() Bryant Lampano Modified by Todd Morton

13. Questions ? WWU Electronics Engineering Technology 2012