Tutorial: Using the USB-Blaster as an SOPC/Qsys Avalon-MM master

Hi Guys, I add my own custom hardware design to this system on the tutorial.(Altera JTAG-to-Avalon-MM Tutorial)(http://www.alteraforum.com/forum/showthread.php?t=34787)

but my hardware which i successfully tested it last time by DE2 board has this input and outputs:

https://www.alteraforum.com/forum/attachment.php?attachmentid=10027

last time i communicate with my accelerator through NIOS in this way:

# ifndef GCD_FW_H_

# define GCD_FW_H_

# include "system.h"

# include "altera_avalon_pio_regs.h"

# ifndef reg_gcd_status

# define reg_gcd_status 0x0 //Register Offset = 0, control/status register

# endif

# ifndef reg_gcd_control

# define reg_gcd_control 0x1 //Register Offset = 1, MSW input register

# endif

# ifndef reg_gcd_input1

# define reg_gcd_input1 0x2 //Register Offset = 2, MSW-1 input register

# endif

# ifndef reg_gcd_input2

# define reg_gcd_input2 0x3 //Register Offset = 3, MSW-2 input register

# endif

# ifndef reg_gcd_output

# define reg_gcd_output 0x4 //Register Offset = 4, MSW-3 input register

# endif

enum {

np_gcdcontrol_reset_mask = (1<<1), //reset the GCD coprocessor

np_gcdcontrol_enable_mask = (1), // perform gcd computation

np_gcdcontrol_clear_mask = 0, // clear the control signals

np_gcdstatus_done_bit = (1), //GCD has finish computation

};

/* prototypes */

unsigned long GCD_FW (unsigned long in1, unsigned long in2);

# endif /*GCD_FW_H_*/

/////////////////////////////////////////////////////////////////////////

# include "system.h"

# include "altera_avalon_pio_regs.h"

# include "GCD_FW.h"

unsigned long GCD_FW (unsigned long in1, unsigned long in2)

{ // Reset the 32-bit GCD Calculator

unsigned long output = 0;

// De-aseert the reset signal to ready computation

IOWR(GCD_0_BASE, reg_gcd_control, np_gcdcontrol_reset_mask);

// Keep looping if ready signal not yet asserted

//IOWR(GCD_0_BASE, reg_gcd_control, np_gcdcontrol_clear_mask);

//while (np_gcdstatus_done_bit != IORD(GCD_0_BASE,reg_gcd_status) );

// Send 1st random number to GCD

IOWR(GCD_0_BASE, reg_gcd_input1, in1);

// Send 2nd random number to GCD

IOWR(GCD_0_BASE, reg_gcd_input2, in2);

// Aseert the GCD enable signal to start calculation

IOWR(GCD_0_BASE, reg_gcd_control, np_gcdcontrol_enable_mask);

// Keep waiting if the computation not yet completed

while (IORD(GCD_0_BASE,reg_gcd_status)==0 );

// Read the GCD output

output = IORD(GCD_0_BASE,reg_gcd_output);

// De-assert the enable signal for next set computation

IOWR(GCD_0_BASE, reg_gcd_control, np_gcdcontrol_clear_mask);

return output;

}

But now I dont know how to talk to my hardware through "avalon_write" syntax since i dont access the HW I/O directly(input clk, reset;

input chipselect;

input [2:0] address;

input write;

input [31:0] writedata;

output [31:0] readdata; )

regards