ePBB Development Guide.pdf

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Microtime Computer Inc.List-7. Creating TASK by application task (OS_uCOS-II : app.c)List-7-(1) :In App_TaskStart(), the first user's task, call App_TaskCreate() to create another task forapplication. Details of App_TaskCreate() will be explained later.List-7-(2) :After board being initialized, task "Start Task" runs into infinite loop and start toggling LED1once every 1/10 seconds.List-7-(3) :This argument indicates that App_TaskSecond() is the entry point of the task that will becreated.List-7-(4) :The second task, App_TaskSecond(), is named as "Second Task", and is used fordebugging purpose.List-7-(5) :It's the body of the second task.List-7-(6) :After task being activated, it runs into infinite loop and start toggling LED2 once every 0.5seconds.ePPB Development Guide 3-14
Microtime Computer Inc.3.2.3. Example_3 : InterruptScenario :This project demonstrates● How I/O pins can be configured as a trigger device for interrupt triggering.● How interrupt mechanism in uCOS-II should be organized for proper operation.When project executing, press the button in target board, KEY0, and check if LED is toggledaccordingly.Note :The control process and code explanation shown in this section is specifically used forPTK-STM32F207 and may not be applied for other platforms.Project Browsing :ePBB\Applications\Projects\PTK-STM32F207\EWARM-V6\OS_uCOS-II\base_button_irq\demo.ewwApplication groupVector tableStartup programmain() programUCOS-II boardsupport packageBSP :board device driverBSP :interrupt handling codeBSP :MCU peripheralclock control codeePBB LibrariesPTK board levelInitial programPTK LED devicedriverMCU peripheralsdriverUCOS-II :RTOS frameworkProject map fileProject image fileFigure-9. Interrupt project (OS_uCOS-II)3-15 ePPB Development Guide
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