| 1 | author: Gerald Dherbomez
|
|---|
| 2 | copyright: Heudiasyc UMR UTC/CNRS 7253
|
|---|
| 3 |
|
|---|
| 4 | Exercise 2: Managing the communication of components together
|
|---|
| 5 | -------------------------------------------------------------
|
|---|
| 6 |
|
|---|
| 7 |
|
|---|
| 8 | Exercise 2.1: communication between components
|
|---|
| 9 | ----------------------------------------------
|
|---|
| 10 |
|
|---|
| 11 | In this exercise we will develop a new component with one input and one output. The component should add a specific number defined as a parameter to the input value and provide the result as output. Before sending the result on the output it must wait for 1 second. The component will print to the terminal the result of the addition too.
|
|---|
| 12 |
|
|---|
| 13 | Write the code of this component in a new plugin but use the same pacpus project as the exercise 1. Build and install the plugin in the PACPUS_ROOT/bin folder and execute the plugin with the PacpusSensor application.
|
|---|
| 14 |
|
|---|
| 15 | Indication:
|
|---|
| 16 | - Now, the tree of your project may be something like that:
|
|---|
| 17 |
|
|---|
| 18 | pacpustutorials
|
|---|
| 19 | |
|
|---|
| 20 | |--> exercises
|
|---|
| 21 | |
|
|---|
| 22 | |--> exercise_1
|
|---|
| 23 | |
|
|---|
| 24 | |--> CMakeLists.txt
|
|---|
| 25 | |--> MessageComponent.h
|
|---|
| 26 | |--> MessageComponent.cpp
|
|---|
| 27 | |
|
|---|
| 28 | |--> exercise_2
|
|---|
| 29 | |
|
|---|
| 30 | |--> CMakeLists.txt
|
|---|
| 31 | |--> AdditionComponent.h
|
|---|
| 32 | |--> AdditionComponent.cpp
|
|---|
| 33 | |
|
|---|
| 34 | |--> build
|
|---|
| 35 | |
|
|---|
| 36 | |--> build_linux.sh
|
|---|
| 37 | |
|
|---|
| 38 | |--> CMakeLists.txt
|
|---|
| 39 |
|
|---|
| 40 |
|
|---|
| 41 |
|
|---|
| 42 | Exercise 2.2: communication of variable size data
|
|---|
| 43 | -----------------------------------------------
|
|---|
| 44 | Create a new component in the same plugin as the previous one (exercise 2.1). It will have the same functionnality with the difference that it can do an addition on a vector of input values.
|
|---|
| 45 |
|
|---|
| 46 | Build, install and run this new component.
|
|---|
| 47 |
|
|---|
| 48 | Indication :
|
|---|
| 49 | - you can use the QVector class as input/output type.
|
|---|
| 50 |
|
|---|
| 51 |
|
|---|
| 52 |
|
|---|
| 53 | Exercise 2.3: Threaded component
|
|---|
| 54 | --------------------------------
|
|---|
| 55 | From the component written in exercise 2.2 create a new component with the same interface. The addition must be done in a separate thread.
|
|---|
| 56 |
|
|---|
| 57 | Build, install and run this new component.
|
|---|
| 58 |
|
|---|
| 59 | Indication :
|
|---|
| 60 | - Your component must inherit from the QThread class.
|
|---|
| 61 | - Take care of the protection of the data to guarantee a thread safe execution.
|
|---|
| 62 |
|
|---|
| 63 |
|
|---|
| 64 |
|
|---|
