CompuLab SBC-X270 Manual do Utilizador descarregar pdf (Página 181)

SCIOPTA - Real-Time Kernel

User’s Manual Manual Version 4.1 16-11

SCIOPTA - Real-Time Kernel

16 SCONF Kernel Configuration

16.9.2 Timer and Interrupt Configuration Tab

This tab is only available for PowerPC.

16.9.2.1 Timer and Interrupt Tab Parameters

Source So

urce for the SCIOPTA system tick.

The SCIOPTA real-time kernel uses an internal tick timer to manage and control all timing

tasks. Here you can select which timer you want to use to generate the tick.

Decrementer The Decrementer Timer of the CPU is used as system tick.

None Another timer will be used as system tick. You need to write your own tick function (usually

a user interrupt service routine) which will call sc_tick explicitly.

Tick in us Enter here the tick interval in micro seconds.

The value can only be entered if you have not selected none as the timer source.

Frequency in Hz System clock frequency.

You need to enter the clock frequency of the processor which is used by the timer source. The

value can only be entered if you have not selected none as the timer source.

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CompuLab SBC-X270 Manual do Utilizador Página 181