| Overview |
| ======== |
| |
| This document explains the freertos_generic example. It is based on code FreeRTOS documentation from |
| http://www.freertos.org/Hardware-independent-RTOS-example.html. It shows combination of several |
| tasks with queue, software timer, tick hook and semaphore. |
| |
| The example application creates three tasks. The prvQueueSendTask periodically sending data to |
| xQueue queue. The prvQueueReceiveTask is waiting for incoming message and counting number of |
| received messages. Task prvEventSemaphoreTask is waiting for xEventSemaphore semaphore given from |
| vApplicationTickHook. Tick hook give semaphore every 500 ms. |
| |
| Other hook types used for RTOS and resource statistics are also demonstrated in example: |
| * vApplicationIdleHook |
| * vApplicationStackOverflowHook |
| * vApplicationMallocFailedHook |
| |
| |
| |
| Toolchain supported |
| =================== |
| - IAR embedded Workbench 8.50.1 |
| - GCC ARM Embedded 9.2.1 |
| |
| Hardware requirements |
| ===================== |
| - Micro USB cable |
| - MIMX8MQ6-EVK board |
| - J-Link Debug Probe |
| - 12V power supply |
| - Personal Computer |
| |
| Board settings |
| ============== |
| No special settings are required. |
| |
| |
| |
| Prepare the Demo |
| ================ |
| 1. Connect 12V power supply and J-Link Debug Probe to the board, switch SW701 to power on the board |
| 2. Connect a USB cable between the host PC and the J1701 USB port on the target board. |
| 3. Open a serial terminal with the following settings: |
| - 115200 baud rate |
| - 8 data bits |
| - No parity |
| - One stop bit |
| - No flow control |
| 4. Download the program to the target board. |
| 5. Launch the debugger in your IDE to begin running the demo. |
| |
| Running the demo |
| ================ |
| After the board is flashed the Tera Term will start periodically printing the state of generic example. |
| |
| Example output: |
| Event task is running. |
| Receive message counter: 1. |
| Receive message counter: 2. |
| Receive message counter: 3. |
| Receive message counter: 4. |
| Receive message counter: 5. |
| Receive message counter: 6. |
| Receive message counter: 7. |
| Receive message counter: 8. |
| Receive message counter: 9. |
| Receive message counter: 10. |
| Receive message counter: 11. |
| Receive message counter: 12. |
| Event task is running. |
| Receive message counter: 13. |
| Receive message counter: 14. |
| ... |
| Customization options |
| ===================== |
| |
