SOPC程序代码

实验一：

流水灯范例

#include "system.h"

#include "altera_avalon_pio_regs.h"

//该文件位于c:\altera\72\ip\sopc_builder_ip\altera_avalon_pio\inc

#include "alt_types.h"

int main (void) __attribute__ ((weak, alias ("alt_main")));

int alt_main (void)

{

alt_u8 led = 0x2;

alt_u8 dir = 0;

volatile int i;

while (1)

{

if (led & 0x81)

{

dir = (dir ^ 0x1);

}

if (dir)

{

led = led >> 1;

}

else

{

led = led << 1;

}

IOWR_ALTERA_AVALON_PIO_DATA(LED_PIO_BASE, led);

i = 0;

while (i<200000) //若200000改为1000000则延迟时间为1s。

i++;

}

return 0;

}

Alt_types.h文件代码：

typedef signed char alt_8;

typedef unsigned char alt_u8;

typedef signed short alt_16;

typedef unsigned short alt_u16;

typedef signed long alt_32;

typedef unsigned long alt_u32;

typedef long long alt_64;

typedef unsigned long long alt_u64;

altera_avalon_pio_regs.h文件代码

#define IOADDR_ALTERA_AVALON_PIO_DATA(base)

__IO_CALC_ADDRESS_NATIVE(base, 0)

#define IORD_ALTERA_AVALON_PIO_DATA(base) IORD(base, 0)

#define IOWR_ALTERA_AVALON_PIO_DATA(base, data) IOWR(base, 0, data)

#define IOADDR_ALTERA_AVALON_PIO_DIRECTION(base)

__IO_CALC_ADDRESS_NATIVE(base, 1)

#define IORD_ALTERA_AVALON_PIO_DIRECTION(base) IORD(base, 1)

#define IOWR_ALTERA_AVALON_PIO_DIRECTION(base, data) IOWR(base, 1, data)

#define IOADDR_ALTERA_AVALON_PIO_IRQ_MASK(base)

__IO_CALC_ADDRESS_NATIVE(base, 2)

#define IORD_ALTERA_AVALON_PIO_IRQ_MASK(base) IORD(base, 2)

#define IOWR_ALTERA_AVALON_PIO_IRQ_MASK(base, data) IOWR(base, 2, data)

#define IOADDR_ALTERA_AVALON_PIO_EDGE_CAP(base)

__IO_CALC_ADDRESS_NATIVE(base, 3)

#define IORD_ALTERA_AVALON_PIO_EDGE_CAP(base) IORD(base, 3)

#define IOWR_ALTERA_AVALON_PIO_EDGE_CAP(base, data) IOWR(base, 3, data)

流水灯程序1

#include "system.h"

#include "altera_avalon_pio_regs.h"

#include "alt_types.h"

int main (void)

{

alt_u8 led = 0x1;

alt_u8 dir = 0;

alt_u8 temp;

volatile int i;

while (1)

{

if (led & 0x80)

{ dir=1; }

else

if (led == 0x01)

{ dir=0;}

if (dir==0 )

{temp=led;

led = led << 1;

led=led|temp;}

else

{led=led>>1;}

IOWR_ALTERA_AVALON_PIO_DATA(LED_PIO_BASE, led);

i = 0;

while (i<500000)

i++;

}

return 0;

}

流水灯程序2

#include "system.h"

#include "altera_avalon_pio_regs.h"

#include "alt_types.h"

int main (void)

{alt_u8 led_data[8]={0x01,0xff,0xcd,0x04,0x40,0xdd,0xfe,0x02};

int count=0;

alt_u8 led = 0x1;

alt_u8 dir = 0;

alt_u8 temp;

volatile int i;

while (1)

{ if (count==7)

{count=0;}

else

{count++;}

led=led_data[count];

IOWR_ALTERA_AVALON_PIO_DATA(LED_PIO_BASE, led);

i = 0;

while (i<500000)

i++; }

return 0;

}

实验二：按键中断

使用7段LED模块：

#include "basic_io.h"

Alt_u32 data;

Data=0x01020304;

seg7_show(SEG7_LUT_8_0_BASE,data);

按键输入中断1：

#include

#include "system.h"

#include "altera_avalon_pio_regs.h"

#include "alt_types.h"

#include "sys/alt_irq.h"

volatile int edge_capture=0; //volatile：易变的，反复无常，可使变量随时刷新，该变量不可优化处理。

void key_interrupts(void* context,alt_u32 id)

{

volatile int* edge_capture_ptr = (volatile int*)context;

*edge_capture_ptr= IORD_ALTERA_AVALON_PIO_EDGE_CAP(KEY_PIO_BASE);

IOWR_ALTERA_AVALON_PIO_EDGE_CAP(KEY_PIO_BASE,0);

}

void initpio(void)

{

void* edge_capture_ptr = (void*)&edge_capture;

IOWR_ALTERA_AVALON_PIO_DIRECTION(LED_PIO_BASE,0xff);

IOWR_ALTERA_AVALON_PIO_DIRECTION(KEY_PIO_BASE,0x00);

IOWR_ALTERA_AVALON_PIO_IRQ_MASK(KEY_PIO_BASE,0xff);

IOWR_ALTERA_AVALON_PIO_EDGE_CAP(KEY_PIO_BASE,0x00);

alt_irq_register(KEY_PIO_IRQ,edge_capture_ptr,key_interrupts);

}

int main (void)