Real-Time Operating Systems

1. Task programming on FreeRTOS ([login to view URL]) Use the examples in Chapter 3, Section 3.4 of the FreeRTOS manual (“Mastering the FreeRTOS Real Time Kernel”) to create three periodic tasks. Assign different priority values to the tasks.  Task 1 (highest priority) monitors a parking lot in the Discovery Park. It generates random coordinates (x,y) of a car and uses the Euclidean distance and period to calculate the speed of the car (output). If the speed is above 10 (to simulate 10 mph), a warning is generated.  Task 2 (medium priority) simulates an occupancy monitoring system for B190. Each time (simulates one hour) a random value between 20 and 50, representing the number of students in B190, is generated. Task 2 calculates the accumulated sum, average, maximum and minimum number of students as output, and clears the statistics after every 24 readings (i.e., one day).  Task 3 (lowest priority) records the power and energy consumption of the Discovery Park. A power reading (random number between 10KW and 200KW) is sent to Task 3 every minute (simulated). Task 3 estimates the energy consumption by calculating Power*Time. The total energy consumption in a month and spikes of power use (i.e., instant power reading >= 5 * average power use) are outputted. a.) Create the three periodic tasks. They generate random sensor readings in memory. Simulate their execution and measure the average response time of each task. Also record the arrival times of jobs of the three tasks and check if there is any pattern. b.) Task 1 reads random (x,y) coordinates from a file, while Task 2 and Task 3 still generate random sensor readings in memory. Simulate their execution and measure the average response time of each task. Compare the results from a.) and b.) .