新手请教，中断老是跳入Abort模式，请高手指点
；有jlink全速运行就跳到 DataAbort 出不来 高手指点IMPORT Main
IMPORT IRQ_Exception
AREA |C$$code|, CODE, READONLY
ENTRY
start
;interrupt vectors
;中断向量表
Reset
LDR PC, ResetAddr
LDR PC, ResetAddr
LDR PC, SWI_Addr
LDR PC, PrefetchAddr
LDR PC, DataAbortAddr
DCD 0xb9205f80
LDR PC, IRQAddr
LDR PC, FIRQAddr
ResetAddr DCD ResetInit
UndefinedAddr DCD Undefined
SWI_Addr DCD SoftwareInterrupt
PrefetchAddr DCD PrefetchAbort
DataAbortAddr DCD DataAbort
DCD 0
IRQAddr DCD IRQHandler
FIRQAddr DCD FIRQHandler
;未定义指令
Undefined
B Undefined
;软中断
SoftwareInterrupt
B SoftwareInterrupt
;取指令中止
PrefetchAbort
B PrefetchAbort
;取数据中止
DataAbort
BDataAbort
;
IRQHandler
STMFD SP!,{r0-r3,r12,lr} ;保存现场
ldr lr, =int_return ;设置中断异常处理程序返回地址到下面的位置
BIRQ_Exception ;直接进入到中断函数处理
int_return
LDMFD SP!,{r0-r3,r12,lr} ;恢复现场
SUBS PC,LR,#4 ;返回进入中断前的代码
;
FIRQHandler
STMFD sp!,{r0-r12,lr}
B FIRQHandler
LDMFD sp!, {r0-r12,lr}
SUBSpc, lr,#4
DISABLE_IRQ
MRS R0, CPSR
ORR R0, R0, #0x80
MSR CPSR_c, R0
MOV PC, LR
;允许中断
ENABLE_IRQ
MRS R0, CPSR ;将CPSR保存至R0寄存器中
BIC R0, R0, #0x80 ;R0 = R0 & ~0x80,清除中断位
MSR CPSR_c, R0 ;将R0写回CPSR状态寄存器
MOV PC, LR ;返回到调用代码
ResetInit
ldr r0,=0x7E004000
ldr r1,=0x0000000
str r1,
LDR R14, =0x50100000 ;初始化一下栈指针
BL ENABLE_IRQ;打开中断允许位
B Main ;跳入MAIN程序
ttS
LDR R5,=0xf0f0ff00
mov pc,lr
END
//========================================================
#define rGPMCON (*(volatile unsigned *)0x7F008820)
#define rGPMDAT (*(volatile unsigned *)0x7f008824)
#define rGPMPUD (*(volatile unsigned *)0x7f008828)
#define rGPFCON (*(volatile unsigned *)(0x7F0080A0))
#define rGPFDAT (*(volatile unsigned *)(0x7F0080A4))
#define rGPFPUD (*(volatile unsigned *)(0x7F0080A8))
#define rGPNCON (*(volatile unsigned *)(0x7F008830))
#define rGPNDAT (*(volatile unsigned *)(0x7F008834))
#define rGPNPUD (*(volatile unsigned *)(0x7F008838))
#define PCLK 66000000//for S3C6410 66MHZ
#define HCLK 133000000 //for S3C6410 133MHZ
#define rTCFG0 (*(volatile unsigned *)(0x7F006000))
#define rTCFG1 (*(volatile unsigned *)(0x7F006004))
#define rTCON (*(volatile unsigned *)(0x7F006008))
#define rTCNTB0 (*(volatile unsigned *)(0x7F00600C))
#define rTCMPB0 (*(volatile unsigned *)(0x7F006010))
#define rTCNTO0 (*(volatile unsigned *)(0x7F006014))
#define rTCNTB1 (*(volatile unsigned *)(0x7F006018))
#define rTCMPB1 (*(volatile unsigned *)(0x7F00601c))
#define rTCNTO1 (*(volatile unsigned *)(0x7F006020))
#define rTCNTB2 (*(volatile unsigned *)(0x7F006024))
#define rTCNTO2 (*(volatile unsigned *)(0x7F00602c))
#define rTCNTB3 (*(volatile unsigned *)(0x7F006030))
#define rTCNTO3 (*(volatile unsigned *)(0x7F006038))
#define rTCNTB4 (*(volatile unsigned *)(0x7F00603c))
#define rTCNTO4 (*(volatile unsigned *)(0x7F006040))
#define rTINT_CSTAT (*(volatile unsigned *)(0x7F006044))//定时器中断控制和状态寄存器
#define rVIC0INTENABLE (*(volatile unsigned *)(0x71200010))
#define rVIC1INTENABLE (*(volatile unsigned *)(0x71300010))
#define rVIC0VECTADDR((volatile unsigned *)(0x71200100))
void IRQ_Exception(void);
void GPIO_Init(void)
{
// 初始化LED的IO配置
rGPMCON = 0x11111;
rGPMPUD = 0x0;
rGPMDAT = 0x1F;
// 初始化蜂鸣器IO配置
rGPFCON = rGPFCON & (~(0x1 << (31)));
rGPFCON = rGPFCON | (0x1 << (2*15));
rGPFPUD = rGPFPUD & (~(0x3 << (2*15))) ;
rGPFDAT = rGPFDAT & 0x7FFF;
}
void timer_init(void)
{
rTINT_CSTAT |= 1<<0; //开timer0中断,允许timer0中断发生
rVIC0INTENABLE |= 1<<23;//开timer0的使能（相当于关掉mask）
rTCFG0 &= ~0xFF;// 清除预分频因子位
rTCFG0 |= 0x42; // 设置分频因子(66分频), 定时器时钟频率为1Mhz
rTCFG1 &= ~0x11;// 设置Divider MUX0为零 1分频
rTCNTB0 = 0x100000; //设初值(1s)
rTCON |= 1<<1; //开Manual Update (Update TCNTB0,TCMPB0)设置初值后要更新TCNTB
rTCON |= 1<<3; //Auto Reload on自动重装开启
rTCON |= 1<<0; //timer0 open;
rTCON &= ~(1<<1); //不再Update TCNTB0,TCMPB0
}
// 循环延时
void msDelay(int time)
{
volatile unsigned int i, j;
for(i = 0; i < 2000000; i++)
{
for (j = 0; j < time; j++);
}
}
// 打开控件蜂鸣器的三极管
void BeepOff(void)
{
rGPFDAT = rGPFDAT& 0x7fff;
}
// 关闭控件蜂鸣器的三极管
void BeepOn(void)
{
rGPFDAT = rGPFDAT | 0x8000;
}
int i = 0;
// IRQ异常中断
void IRQ_Exception()
{
rGPMDAT =~((0<<0)|(0<<1)|(0<<2)|(0<<3));
i++;
// 打开一个灯，并闭另外一个灯
rGPMDAT = ~(1<<i++);
BeepOn();
msDelay(5);
BeepOff();
// 清除定时器中断状态位
while((rTINT_CSTAT & 0x20)) rTINT_CSTAT |= (1 << 5);
}
void Main()
{
rGPMDAT =~((1<<0)|(1<<1)|(1<<2)|(1<<3));
GPIO_Init();
timer_init();
while(1);
}
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