1.3 FreeRTOS Task Notification
This example application is to illustrate the FreeRTOS Task Notification feature which is used as a light weight binary semaphore.
Description
- This demonstration creates two tasks that send notifications back and forth to
each other.
- Task2 blocks to wait for Task1 to notify and will be blocked for 500 ms
- Task1 sends a notification to Tasks2, bringing it out of the blocked state, toggles an LED
- Task1 blocks to wait for Task2 to notify
- Task2 sends notification to Task1, bringing it out of the blocked state
- Above steps will be repeated. i.e., an LED toggles for every 500 ms
Downloading and Building the Application
To clone or download this application from Github, go to the main page of this repository and then click Clone button to clone this repository or download as zip file. This content can also be downloaded using content manager by following these instructions.
Path of the application within the repository is apps/rtos/freertos/task_notification_freertos/firmware.
To build the application, refer to the following table and open the project using its IDE.
| Project Name | Description |
|---|---|
| sam_rh71_ek.X | MPLABX project for SAM RH71 Evaluation Kit |
Setting Up the Hardware
The following table shows the target hardware for the application projects.
| Project Name | Description |
|---|---|
| sam_rh71_ek.X | SAM RH71 Evaluation Kit |
Setting Up SAM RH71 Evaluation Kit
- Connect the J15 USB port on the board to the computer using a mini USB cable
- Connect debugger to the 20-pin JTAG header J33
Running the Application
- Build and program the application using its IDE
- The LED toggles on success for every 500 ms
Refer to the following table for LED name:
| Board | LED Name |
|---|---|
| SAM RH71 Evaluation Kit | LED0 |