s3c44b0的中断（裸板中断）
ads软件的整版测试程序的main.c文件
#include
#include "..\inc\option.h"
#include "..\inc\44b.h"
#include "..\inc\44blib.h"
#include "..\inc\def.h"
#include "..\inc\cache.h"
#include "..\inc\uart.h"
#include "..\inc\power.h"
#include "..\inc\dma.h"
#include "..\inc\timer.h"
#include "..\inc\rtc.h"
#include "..\inc\etc.h"
#include "..\inc\iic.h"
#include "..\inc\stop.h"
#include "..\inc\extdma.h"
#include "..\inc\tp.h"
#include "..\inc\usb.h"
#include "..\inc\kb.h"
#include "..\inc\Pwm.h"
#include "..\inc\led.h"
extern int Image$$RO$$Base;
void Isr_Init(void);
void HaltUndef(void);
void HaltSwi(void);
void HaltPabort(void);
void HaltDabort(void);
typedef STATUS (* TEST_FUNC)(void);
typedef struct tagMenuItem
{
void* pFunc;
char* szMenuString;
}MENUITEM, *PMENUITEM;
//****************************************************************
// * S3C44B0X developer's notes *
// ***************************************************************
MENUITEM g_Menus[] =
{
{ (void *)Test_Cache, "Cache " },
{ (void *)Test_Kb, "keyboard " },
{ (void *)Test_Uart0, "UART 0 " },
{ (void *)Test_Uart0Fifo, "UART 0 FIFO " },
{ (void *)Test_Uart1, "UART 1 " },
{ (void *)Test_Uart1Fifo, "UART 1 FIFO " },
{ (void *)Test_SlowMode, "SLOW Mode " },
{ (void *)Test_HoldMode, "HOLD Mode " },
{ (void *)Test_Zdma0, "Zdma0 " },
{ (void *)Test_Zdma1, "Zdma1 " },
{ (void *)Test_WDTimer, "WDTimer " },
{ (void *)Display_Rtc, "RTC(display) " },
{ (void *)Test_Rtc_Alarm, "RTC(Test) " },
{ (void *)Test_Rtc_Tick, "RTC Tick " },
{ (void *)Test_Iic, "IIC(AT24C01) " },
{ (void *)Test_PLL, "Change PLL " },
{ (void *)Test_Pwm, "Test PWM (BEEP) " },
{ (void *)Test_Led, "Test LED " },
};
void Main(void)
{
int i;
int nMenuSize;
int nMenuSel = 0;
rSYSCFG=SYSCFG_8KB;//定义缓冲区大小
#if (PLLON==1)
ChangePllValue(PLL_M,PLL_P,PLL_S);
#endif
Isr_Init();
Port_Init ();
Uart_Init (0,115200);
Uart_Select (0);//选择串口0
Delay (0); //calibrate Delay()
Delay (5000);
nMenuSize = sizeof(g_Menus) / sizeof (MENUITEM);//计算菜单项数目
for (;;)
{
Uart_Printf("\n\n\n ITSN S3C44B0 Test Program V1.0 (2006-1-20 )\n\n");
Uart_Printf("\nS3C44B0X Test Program Ver 1.00 rSYSCFG=0x%x MCLK=%d\n\n",rSYSCFG,MCLK);
for (i = 1; i <= nMenuSize; ++ i)
{
//显示每一项菜单
Uart_Printf("%2d:%s", i, g_Menus[i - 1].szMenuString);
if((i%4)==0)
Uart_Printf("\n");
}
//DisplayRtc ();
Uart_Printf ("\n\nSelect the function to test?");
nMenuSel = Uart_GetIntNum1 () - 1;
Uart_Printf("\n");
if ((nMenuSel >=0) && (nMenuSel <= nMenuSize))
{
((TEST_FUNC)(g_Menus[nMenuSel].pFunc)) ();//执行对应菜单号的函数
}
}
}
void Isr_Init(void)
{
U32 i;
pISR_UNDEF=(unsigned)HaltUndef;
pISR_SWI =(unsigned)HaltSwi;
pISR_PABORT=(unsigned)HaltPabort;
pISR_DABORT=(unsigned)HaltDabort;
//异常向量重映射
for(i=_RAM_STARTADDRESS;i<(_RAM_STARTADDRESS+0x20);i+=4)
{
*((volatile unsigned *)i)=0xEA000000+((unsigned int) Image$$RO$$Base – \
0x0c000000 -0x08)/4;
}
//0xEA000000其实是b指令的反汇编，相对跳转指令。
//rINTCON=0x1; // Vectored Int. IRQ enable,FIQ disable
rINTCON=0x5; // Non-vectored,IRQ enable,FIQ disable
rINTMOD=0x0; // All=IRQ mode
rINTMSK|=BIT_GLOBAL|BIT_EINT4567; // All interrupt is masked.
}
void HaltUndef(void)
{
Uart_Printf("Undefined instruction exception!!!\n");
while(1);
}
void HaltSwi(void)
{
Uart_Printf("SWI exception!!!\n");
while(1);
}
void HaltPabort(void)
{
Uart_Printf("Pabort exception!!!\n");
while(1);
}
void HaltDabort(void)
{
Uart_Printf("Dabort exception!!!\n");
while(1);
} 44b0LIB.S
; ***********************************************
; * NAME : assembly function library *
; * Version : 07.JUL.2000 *
; ***********************************************
AREA |C$$code|, CODE, READONLY
EXPORT ChangeMemCon
;void ChangeMemCon();
ChangeMemCon
stmfd sp!,{r4-r9} ;Assembler uses the high registers(r4~).
ldmia r0,{r1-r9}
ldr r0,=0x01c80004 ;BANKCON0 Address
stmia r0,{r1-r9}
ldmfd sp!,{r4-r9}
mov pc,lr
EXPORT DisableInterrupt
DisableInterrupt
;This function works only if the processor is in previliged mode.
NOINT EQU 0xc0
mrs r0,cpsr
orr r0,r0,#NOINT
msr cpsr_cxsf,r0
mov pc,lr
EXPORT EnableInterrupt
EnableInterrupt
;This function works only if the processor is in previliged mode.
mrs r0,cpsr
bic r0,r0,#NOINT
msr cpsr_cxsf,r0
mov pc,lr
ENDads软件中断测试程序
void Eint4567_Test( void )
{
Uart_Printf( "\n外部中断4567 测试!\n" );
Uart_Printf("本程序的测试之前保证uboot已经在flash中并且可以运行\n\n");
rINTCON = 0x5 ; //无向量中断模式
rINTMOD = 0x0 ; //All=IRQ mode
//rPCONG = rPCONG | ( 0x3f << 10 ); //EINT7~5
//rPUPG = rPUPG & (~(7 << 5)) ; //pull up resister is enable
//rEXTINT = rEXTINT & (~(0xfff << 20)) ; //EINT567低电平触发中断
rPCONG = rPCONG | ( 0xff << 8 ); //EINT7~4
rPUPG = rPUPG & (~(0xf << 4)) ; //pull up resister is enable
rEXTINT = rEXTINT & (~(0xffff << 16)) ; //EINT4567低电平触发中断
pISR_EINT4567 = (unsigned)Key_Interrupt ;
rINTMSK = ~( BIT_GLOBAL | BIT_EINT4567 ) ; //start INT
Uart_Printf( "\nPlease press the button key1 key2,key3,key4! Press ESC to Exit!\n" );
while ( Uart_GetKey() != ESC_KEY)
{
Delay(160);
}
rINTMSK = BIT_GLOBAL ; //disable INT
}
volatile char which_int_key = 0 ;
void __irq Key_Interrupt(void)
{
which_int_key = rEXTINTPND;
rEXTINTPND = 0xf ; //clear EXTINTPND reg by writing 1(same rI_ISPC)
rI_ISPC = BIT_EINT4567 ; //clear pending_bit(rI_ISPC) after clear EXTINTPND
rPCONG = rPCONG & (~(0x3f << 10)); //GPC567 is input
switch (which_int_key)
{//因为Eint4567共享一个中断源,所以用rEXTINTPND来区分是Eint4567的哪个发生
case 1:
Uart_Printf("EINT4 had been occured...\r");
Light_Led (LED_ALL, FALSE);//Light_Led (LED3, TRUE);
which_int_key = 0;
break;
case 2:
Uart_Printf("EINT5 had been occured...\r");
Light_Led (LED3, TRUE);
which_int_key = 0;
break;
case 4:
Uart_Printf("EINT6 had been occured...\r");
Light_Led (LED2, TRUE);
which_int_key = 0;
break;
case 8:
Uart_Printf("EINT7 had been occured...\r");
Light_Led (LED1, TRUE);
which_int_key = 0;
break;
default :
break;
}
while ( (rPDATG&0x00e0) != 0x00e0 ) ;
Delay( 50 ) ; //
//rPCONG = rPCONG | ( 0x3f << 10 ); //EINT7~5
rPCONG = rPCONG | ( 0xff << 8 ); //EINT7~4
}