dsp编程部分提示.doc

#include DSP281x_Device.h / DSP281x Headerfile Include File#include DSP281x_Examples.h / DSP281x Examples Include File/ Prototype statements for functions found within this errupt void XINT2_isr(void);/ 子程序接口void Delay(unsigned int nDelay);/ 延时子程序/ 定义指示灯寄存器地址和寄存器类型#define LBDS (*(unsigned int *)0xc0000)#define XINT2CR (*(unsigned int *)0x7071)#define XNMICR (*(unsigned int *)0x7077)#define LEDS *(int *)0xc0000#define CTRGR *(int *)0x108000#define CTRLCDCMDR *(int *)0x108001#define CTRKEY *(int *)0x108001#define CTRLCDCR *(int *)0x108002#define CTRCLKEY *(int *)0x108002#define CTRLCDLCR *(int *)0x108003#define CTRLCDRCR *(int *)0x108004#define CTRLA *(int *)0x108005#define CTRLR *(int *)0x108007int i=0,nCount,a=0;unsigned int uLBD;void main(void) unsigned int uPort8000;/ This example function is found in the DSP281x_SysCtrl.c file. uLBD=nCount=0; InitSysCtrl();/初始化cpu DINT;/关中断 InitPieCtrl();/初始化pie寄存器 IER = 0x0000;/禁止所有的中断 IFR = 0x0000; InitPieVectTable();/ Interrupts that are used in this example are re-mapped to/ ISR functions found within this file. EALLOW; / This is needed to write to EALLOW protected registers PieVectTable.XINT2 = &XINT2_isr; EDIS; / This is needed to disable write to EALLOW protected registers/ Enable CPU INT1 which is connected to CPU-Timer 0: IER |= M_INT1;/ Enable TINT0 in the PIE: Group 1 interrupt 7 PieCtrlRegs.PIEIER1.bit.INTx5 = 1; XINT2CR =0x1;/*打开管脚xint2外中断*/ /XNMICR=0x1;/*打开nmi中断*/ Enable global Interrupts and higher priority real-time debug events: EINT; / Enable Global interrupt INTM ERTM; / Enable Global realtime interrupt DBGM /初始化CTR扩展板 CTRGR=0; CTRGR=0x80; CTRGR=0; CTRLR=0;/ 关闭东西方向的交通灯 CTRLR=0x40;/ 关闭南北方向的交通灯 CTRLR=0xc1; CTRLR=0xc8;/使能键盘外中断 uPort8000=CTRCLKEY; while ( 1 ) if(a=1) LBDS=0x1;/点亮LED灯 a=0; Delay(256); if(a=0) LBDS=0x0;/关闭LED灯 interrupt void XINT2_isr(void) a=1; PieCtrlRegs.PIEACK.all = PIEACK_GROUP1;void Delay(unsigned int nDelay)/延时int ii,jj,kk=0;for ( ii=0;iinDelay;ii+ ) for ( jj=0;jj512;jj+ )kk+;/=/ No more./=#include DSP281x_Device.h / DSP281x Headerfile Include File#include DSP281x_Examples.h / DSP281x Examples Include File/ Prototype statements for functions found within this errupt void cpu_timer0_isr(void);#define LEDS *(int *)0xc0000#define CTRGR *(int *)0x108000#define CTRLCDCMDR *(int *)0x108001#define CTRKEY *(int *)0x108001#define CTRLCDCR *(int *)0x108002#define CTRCLKEY *(int *)0x108002#define CTRLCDLCR *(int *)0x108003#define CTRLCDRCR *(int *)0x108004#define CTRLA *(int *)0x108005#define CTRLR *(int *)0x108007int i=0,nCount;unsigned int uLBD;void main(void) unsigned int uPort8000; InitSysCtrl();/初始化cpu DINT;/关中断 InitPieCtrl();/初始化pie寄存器 IER = 0x0000;/禁止所有的中断 IFR = 0x0000; InitPieVectTable();/初始化pie中断向量表 EALLOW; / This is needed to write to EALLOW protected registers PieVectTable.TINT0 = &cpu_timer0_isr;/指定中断服务子程序 EDIS; / This is needed to disable write to EALLOW protected registers CpuTimer0.RegsAddr = &CpuTimer0Regs;/ Initialize timer period to maximum:CpuTimer0Regs.PRD.all = 0xff00;/ Initialize pre-scale counter to divide by 1 (SYSCLKOUT):CpuTimer0Regs.TPR.all = 0;CpuTimer0Regs.TIM.all = 0;CpuTimer0Regs.TPRH.all = 0;/ Make sure timer is stopped:CpuTimer0Regs.TCR.bit.TSS = 1;CpuTimer0Regs.TCR.bit.SOFT = 1;CpuTimer0Regs.TCR.bit.FREE = 1;/ Reload all counter register with period value:CpuTimer0Regs.TCR.bit.TRB = 1;CpuTimer0Regs.TCR.bit.TIE = 1;/ Reset interrupt counters:CpuTimer0.InterruptCount = 0; StartCpuTimer0();/启动定时器0/ Enable CPU INT1 which is connected to CPU-Timer 0: IER |= M_INT1;/ Enable TINT0 in the PIE: Group 1 interrupt 7 PieCtrlRegs.PIEIER1.bit.INTx7 = 1;/ Enable global Interrupts and higher priority real-time debug events: EINT; / Enable Global interrupt INTM ERTM; / Enable Global realtime interrupt DBGM CTRGR=0;/ 初始化CTR CTRGR=0x80; CTRGR=0; CTRLR=0;/ 关闭东西方向的交通灯 CTRLR=0x40;/ 关闭南北方向的交通灯 uPort8000=CTRCLKEY; while ( 1 ) interrupt void cpu_timer0_isr(void) int j,k; /CpuTimer0.InterruptCount+; / Acknowledge this interrupt to receive