STM32CUBEL4 datasheet(33/37 Pages) STMICROELECTRONICS

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Kernel description

7.4

Kernel event manager

The kernel provides services to manage events mainly here user key input (k_menu.h file)

kMenu_SendEvent() is called from the interrupt IRQ callback (HAL_GPIO_EXTI_Callback())

to send the event message to the Kernel event mailbox.

kMenu_GetEvent() is called by either the kernel event manager in

kMenu_HandleSelection() or directly by the running module application expecting user input

keys.

7.5

Module manager

The main demonstration menu is initialized and launched by the Start thread.

The modules are managed by the kernel; this later is responsible of initializing the modules,

initializing hardware resources relative to the modules and initializing the system menu.

Each module should provide the following functionalities and properties:

Graphical component structure.

Method to startup the module.

Method to manage low-power mode (optional)

The application task

The module background process (optional)

Specific configuration

Error management

The modules can be added in run time to the demonstration and can use the common

kernel resources. The following code shows how to add a module to the demonstration:

STM32CUBEL4 Arkusz danych(PDF) 33 Page - STMicroelectronics