problem when i debug CF card

nios2-terminal: There are no JTAG UARTs available which match the --device and

nios2-terminal: --instance options you provided.

what is the problem?how to solve it? thx v much

my software :

# include "alt_types.h"# include <stdio.h># include <unistd.h># include "system.h"# include "sys/alt_irq.h"

//#include "altera_avalon_pio_regs.h"# include "altera_avalon_cf_regs.h"# include "altera_avalon_cf.h"

alt_u8 data[512];

alt_u8 flag1,flag2;

//parameter setting

//lba2:sector number,lba3:adr0-7,lba4:adr8-15,lba5:adr16-23

//lba6:set lba addressing & lba:adr24-27

void busy_check(void)

{alt_u8 temp;

temp=IORD_ALTERA_AVALON_CF_IDE_STATUS(CF_0_IDE_BASE);

while(temp&0x50!=0x50)

;

}

void set_para(alt_u8 comm,alt_u8 lba2,alt_u8 lba3,alt_u8 lba4,alt_u8 lba5,alt_u8 lba6)

{//set sector number

busy_check();

IOWR_ALTERA_AVALON_CF_IDE_SECTOR_COUNT(CF_0_IDE_BASE, 1);

//set lba3:adr0-7

busy_check();

IOWR_ALTERA_AVALON_CF_IDE_SECTOR_NUMBER(CF_0_IDE_BASE, lba3);

//set lba4:adr8-15

busy_check();

IOWR_ALTERA_AVALON_CF_IDE_CYLINDER_LOW(CF_0_IDE_BASE, lba4);

//set lba5:adr16-23

busy_check();

IOWR_ALTERA_AVALON_CF_IDE_CYLINDER_HIGH(CF_0_IDE_BASE, lba5);

//set cf card as LBA ADDRESSING&lba:adr24-27

busy_check();

IOWR_ALTERA_AVALON_CF_IDE_DEVICE_HEAD(CF_0_IDE_BASE, lba6);

// write commond 0x30 to cf card

busy_check();

IOWR_ALTERA_AVALON_CF_IDE_COMMAND(CF_0_IDE_BASE, comm);

}

//write data to cf card

void wr_data(void)

{alt_u16 i,ptr;

alt_u8 temp;

for(i=0;i<512;i++)

data[i]=i;

for(ptr=0;ptr<512;ptr++)

{busy_check();

IOWR_ALTERA_AVALON_CF_IDE_DATA(CF_0_IDE_BASE, data[ptr]);

}

}

//read data from cf card

void rd_data(void)

{alt_u16 i,ptr;

alt_u8 temp;

for(ptr=0;ptr<512;ptr++)

{ busy_check();

temp=IORD_ALTERA_AVALON_CF_IDE_DATA(CF_0_IDE_BASE);

printf("*****%c*****",temp);

}

}

int main(void)

{

alt_u8 present;

//--------------------------------------------------------------

//Copact FLash presence checking

//--------------------------------------------------------------

//alt_avalon_ide_cf_init(CF_0_CTL_BASE );

present=IORD_ALTERA_AVALON_CF_IDE_STATUS(CF_0_IDE_BASE);

if(present != 0)

{

printf("Waiting for the Compact Flash Card to be inserted ......\n");

}

/*

while(present != 0)

{

present =IORD_ALTERA_AVALON_CF_IDE_STATUS(CF_0_IDE_BASE);

printf("");

}

printf("\nCompact Flash is detected ......\n");

*/

//Power the device

IOWR_ALTERA_AVALON_CF_IDE_CTL(CF_0_CTL_BASE, 0x2) ;

//write a 512bytes to a sector of the cf card

set_para(0x30,1,1,0,0,0xe0);

wr_data();

set_para(0x20,1,1,0,0,0xe0);

rd_data();

IOWR_ALTERA_AVALON_CF_IDE_CTL(CF_0_CTL_BASE, 0x0) ;

printf(" \n\n --------------------------------------------\n");

printf(" Now it&#39;s safe to remove the CompactFlash Card\n");

printf(" --------------------------------------------\n\n");

return (0);

}