1. Lab 3 Details

2. Lab 3 Develop a bio-feedback system based on a PWM (pulse width modulated) thermal sensor Use temperature setting to control the delays in an audio signal so that ‘stereo music’ seems to move across your head (left to right) in response to thermal changes

3. End of Lab. 2

4. Demonstration of bio-feedback operation using a ‘Mock’ temperature sensor

5. Build and test mock (fake) temperature device

6. Reminder of how to test a TTCOs task Design the task state diagram

7. Develop Basic Test for FlashLED6 “working”

8. Write the code to satisfy the Tests

9. Defects The number of syntax errors you did not see IS A PROXY FOR The number of logical errors present in your code DO A PROPER CODE REVIEW

10. Don’t ignore ANY compiler warning messages

11. Why is a warning message such a big deal?

12. “crewOkay = true” is always true so ‘Customer release’ removes code

13. Back to Lab. 3 If this works – then when you get your thermal sensor working (and writing into the global variable roomTemperature), then your bio-feedback device will operate

14. Handling key-presses and timing

15. Better solution? If there is no change in the Switch centre, then increment a counter each time the FlashRateLED5_SW3( ) is called More technical solution – read the clock cycle register (Assignment 1). However, does the increased accuracy (and increased coding time) actual give the customer a better solution

16. Displaying the temperature (Mock now, true later) Led5 and LED6 continue flashing when SW1 is released

17. Temperature sensor Task 1 – accurately determine the PWM values of the thermal sensor using input and place values in T1_Low and T2_High global variables Task 2 – Use T1_Low and T2_High global variables to calculate temperature Task 3 and 4 – Display temperature and do bio-feedback task

18. Design and test CalculateTemperature function BEFORE making TTCOS task

19. TMP03 Thermal sensor

20. Check that sensor still works

21. Low accuracy measurement of T1 and T2 (80% of Lab 3 complete)

23. Design part of Lab. 3 using General Purpose timer Will need to read up in the Blackfin Processor Hardware Manual