Question

单片中断源 及各自的优先级，改变中断优先级如何设置

Answer 1

使用voidIntPrioritySet(uint32_tui32Interrupt,uint8_tui8Priority)函数来设置。Thisfunctionisusedtosetthepriorityofaninterrupt.Theui32InterruptparametermustbeoneofthevalidINT_valueslistedinPeripheralDriverLibraryUser’sGuideanddefinedintheinc/hw_ints.hheaderfile.Theui8Priorityparameterspecifiestheinterruptshardwarepriorityleveloftheinterruptintheinterruptcontroller.Whenmultipleinterruptsareassertedsimultaneously,theoneswiththehighestpriorityareprocessedbeforethelowerpriorityinterrupts.Smallernumberscorrespondtohigherinterruptpriorities;priority0isthehighestinterruptpriority.////SettheUART0interruptprioritytothelowestpriority.//IntPrioritySet(INT_UART0,0xE0);////SettheUSB0interruptprioritytothehighestpriority.//IntPrioritySet(INT_USB0,0);