中断的一般方法 步骤 1 void InitPieCtrl(void) //初化 PIE 控制寄存器 { DINT; //关闭所有 CPU 标准中断Disable Interrupts at the CPU level: PieCtrlRegs.PIECTRL.bit.ENPIE = 0; // 关闭所有 PIE 中断Disable the PIE // Clear all PIEIER registers: 清除所有中断使能位 PieCtrlRegs.PIEIER1~ 12(省了中问部分).all = 0; // Clear all PIEIFR registers: 清除所有中断标志位 PieCtrlRegs.PIEIFR1~ 12.all = 0; } 步骤 2 // Disable CPU interrupts and clear all CPU interrupt flags: IER = 0x0000; IFR = 0x0000; 步骤 3 初始化中断向量表 void InitPieVectTable(void) { int16 i; Uint32 *Source = (void *) &PieVectTableInit; Uint32 *Dest = (void *) &PieVectTable; EALLOW; for(i=0; i < 128; i++) *Dest++ = *Source++; EDIS; // Enable the PIE Vector Table PieCtrlRegs.PIECTRL.bit.ENPIE = 1; } //下面这个原中断数据地向量位置 const struct PIE_VECT_TABLE PieVectTableInit = { PIE_RESERVED, // 0 Reserved space PIE_RESERVED, // 1 Reserved space PIE_RESERVED, // 2 Reserved space PIE_RESERVED, // 3 Reserved space PIE_RESERVED, // 4 Reserved space PIE_RESERVED, // 5 Reserved space PIE_RESERVED, // 6 Reserved space PIE_RESERVED, // 7 Reserved space PIE_RESERVED, // 8 Reserved space PIE_RESERVED, // 9 Reserved space PIE_RESERVED, // 10 Reserved space PIE_RESERVED, // 11 Reserved space PIE_RESERVED, // 12 Reserved space // Non-Peripheral Interrupts INT13_ISR, // XINT13 or CPU-Timer 1 INT14_ISR, // CPU-Timer2 DATALOG_ISR, // Datalogging interrupt RTOSINT_ISR, // RTOS interrupt EMUINT_ISR, // Emulation interrupt NMI_ISR, // Non-maskable interrupt ILLEGAL_ISR, // Illegal operation TRAP USER1_ISR, // User Defined trap 1 USER2_ISR, // User Defined trap 2 USER3_ISR, // User Defined trap 3 USER4_ISR, // User Defined trap 4 USER5_ISR, // User Defined trap 5 USER6_ISR, // User Defined trap...
