請問STM8S interrupt priority 如何調整?
請問STM8S interrupt priority 如何調整?我希望EXTI (PortD) interrupt priority 高於TIM4,
該如何調整呢 ?
我嘗試下列設定:
ITC->ISPR2 = 0xCF; // EXTI PortD = Level 2
ITC->ISPR6 = 0xBF; // TIM4 = Level 0
是否還少了什麼?
RE:請問STM8S interrupt priority 如何調整?
你想高于他,ST8就需要你这样设置了。回复:請問STM8S interrupt priority 如何調整?
依據RM0016 page 91:Level 0 can not be programmed (I1_x=1, I0_x=0). In this case, the previously stored value is
kept. For example: if previous value is CFh, and programmed value equals 64h, the result is
44h.
這表示什麼意思呢?
是否我將 TIM4 interrupt priority 設為Level 1 即可 ? 因原本所有interrupt
priority均為 Level 3. 調降TIM4 interrupt priority 即可.
//ITC->ISPR2 = 0xCF; // EXTI PortD (INT06)= Level 2 (00)
ITC->ISPR6 = 0x7F; // TIM4 (INT23) = Level 1 (01)
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