ISSA Laboratory 1 – Interior lights application Solution

Interior lights interface


Exercise 1: Open and close one “led” 0.5p
button must clear all the “leds” when is pressed.
Complete the close_all_leds function in order to do this action.
button must open and close 1 LED when is pressed using set_interior_lights
function.
Complete the specific function to do this action.




Exercise 2: Sweep all leds 0.5p
button must give “One led at a time” effect when is pressed.
MyThread_sweep needs to be used to make the state machine, and sweep_leds function will be used in order to switch the states emitted by thread to change “leds” state.
HINT: Use set4leds in order to change colors for “leds”.

Exercise 3: Control led brightness 0.5p
Percentage spin box is scaled between 0-100, this means the led brightness percentage. The progress bar is also scaled between 0-100 and must go through all the values until his value is equal with led brightness percentage, on a real led it would give the fade effect.
Progress bar value is stored in a variable and in the valuechange function is checked if it is bigger or smaller than the spin box value.
If progress bar value is smaller than the spin box value you should fade out from the actual brightness (meaning the progress bar percentage) to the next brightness (meaning the spin box percentage).
Change “change_pb_down_value” function to make this action work.
If progress bar value is bigger than the spin box value you should fade in from the actual brightness (meaning the progress bar percentage) to the next brightness (meaning the spin box percentage).
Change “change_pb_up_value” function to make this action work.
HINT: Use ENTER key after setting the value you want for the spin box.

Exercise 4: KL control 0.5p
Kl is the abbreviation from ‘klemme’, which is the German term for connector/connection.
no_KL – all the “leds” are closed
KL_S – l1, grey color (is the ignition switch position #1 - accessory)
KL_15 – l2, green color (ignition switch position #2 – ON)
KL_50 – l3, red color (ignition switch position #3 – start, CRANKING)
KL_75 – l4, blue color (ENGINE RUNNING)
*l1,l2,l3,l4 are set_bg_colors arguments
KL_list is a list that contain all the KL’s. Using you have to go through all this list and set the following status for current KL:
Klemme Leds state Visual representation
no_KL all 4 leds closed
KL_S just KL_S led open
KL_15 KL_s, KL_15 leds open
KL_50 KL_s, KL_15, KL_50, KL_75 leds open
KL_75 KL_s, KL_15, KL_50, KL_75 leds open

Complete KL_lights function to make this application work.
Description of existing functions: set_bg_colors – setting the color of each led.
prev_kl_function - when button is pressed it changes the current KL to the previous KL. next_kl_function – when button is pressed it changes the current KL to the next KL. set_enable – set button to disable when current KL is no_KL and set the “Next KL” button to disable when current KL is KL_75.

Exercise 5: Obstacle detection 0.5p
Let’s start talking about the widgets that we use to make this exercise running. On the left side of the “Left Door”/ ”Right door” buttons there is a spin box. This spin box is actually the obstacle. The spin box is scaled between 0-100 (meaning the distance in cm that a door can open). Setting a value between 0-100 we fix an obstacle at the given value.

There are also 2 sliders, those sliders are also scaled between 0-100.
The “Left Door”/ ”Right door” button are making all the magic, because after we set the obstacle we just press one of these buttons to simulate an open door.
open_door_left/open_door_right are the functions handler for above buttons. When they are pressed the function should make the slider go through all the values until the obstacle value is reached, not more.
valuechange_right_slider/valuechange_left_slider are the functions handler for the sliders, when the slider is moved these functions are called. This functions should stop the slider moving to values bigger than the spin box value (obstacle).
*value 0 in the spin box is considered “no obstacle present”.
Complete above specified functions to make the obstacle detection work.




Info! exercises 6,7,8,9,10 use setWarningLights to set the color of the LEDs


Complete the specific functions to do this action.

Exercise 7: Left Signaling 0.5p

When the button is pressed for the first time 2 LEDs will flash until the button is pressed again.
If Right Signaling is on while Left Signaling is actioned, it must be set to off and continue only with the left signaling action.
Complete the specific functions to do this action.

Exercise 8: Right Signaling 0.5p

When the button is pressed for the first time 2 LEDs will flash until the button is pressed again.
If Left Signaling is on while Right Signaling is actioned, it must be set to off and continue only with the left signaling action.
Complete the specific functions to do this action.

Useful for next exercises:

The button must turn on and off a led. Complete carLight function to do this. (as in set_interior_lights function)
*use setcarLight function to light the “led”
Exercise 9: 0.5p


Exercise 10: 0.5p