1.8 TrustZone FreeRTOS Basic

This demonstrates TrustZone feature and uses two projects viz., Secure and Non-Secure Project that work together on the same MCU and offering security isolation between the Trusted and the Non-trusted resources in the device.

FreeRTOS and BSP are configured and run in Non-Secure mode.

This demonstration creates three tasks and a queue. Task1 sends message to Task2 and Task3 to unblock and toggle an LED. Task1 priority is low compared to Task2 and Task3 which shares same priority.

• Task1: This task sends the data (i.e.: delay, the amount of time for which the task need blocked) to Task2 and Task3 using a queue, then Task1 blocks itself for 200ms to allow other tasks to schedule and run
• Task2: This task blocks until it receives the data from queue, if the Task2 receives the expected delay (i.e.: 1000ms) from Task1 then toggles the LED and blocks itself for the amount of delay received
• Task3: This task blocks until it receives the data from queue, if the Task3 receives the expected delay (i.e.: 100ms) from Task1 then toggles the LED and blocks itself for the amount of delay received

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.

The following table shows the target hardware for the application projects.

1. Build and program the application using its IDE
2. The LED indicates the success or failure.
   • The LED toggles on success i.e.: each time when the Task2 or Task3 receives a valid message