DE2 Send/Receive data via Ethernet Port

Hi.

If you've never touched a computer network, maybe is a good idea to read a lot about ethernet hard specifications, plus ethernet protocols and their diferences.

Also if you've a DE2 board could be quiet easy to use the onboard DM9000.

Did you read my UDP example ? is totally open.

It is not directly usefull for you, but would be for understsnd better, how the ethernet works.

The thread is at http://www.alteraforum.com/forum/showthread.php?t=3947

Regards.

Alberto.

--- Quote Start ---

Hi.

If you've never touched a computer network, maybe is a good idea to read a lot about ethernet hard specifications, plus ethernet protocols and their diferences.

Also if you've a DE2 board could be quiet easy to use the onboard DM9000.

Did you read my UDP example ? is totally open.

It is not directly usefull for you, but would be for understsnd better, how the ethernet works.

The thread is at http://www.alteraforum.com/forum/showthread.php?t=3947

Regards.

Alberto.

--- Quote End ---

Thanks for your help!!!!!:)

Thanks for your post. I am currently in my final year at OIT. I am having major trouble with receiving packets through the DM9000. I've read all of the documentation on ISRs, the DM9000A, and many threads; however, I cannot seem to get stable and reliable packet reception. If you could give me a hand or point me in the right direction I would greatly appreciate it.

Thank You,

Adam F.

Sorry Adam.

I can not yet to get the recieve part working fine , seems that I had the same problems as you.

I think that could be some wrong in the DM9000 driver code, but I've not time in this momment to play with it.

Anyway when I'll get some free time, I'll continue trying, and I'll post the working code too, hope not to be so later for you.

Got it, I wish I got it 4 weeks ago, but I am still elated. This is sloppy and I haven't fine tuned it; but calling DM9000_Init() in the ISR keeps the program running. Here is some sample code:

# include "basic_io.h"# include "test.h"# include "LCD.h"# include "DM9000A.C"

# define DE2_8_7Segs_BASE 0x01901028

unsigned int aaa,rx_len,i,packet_num;

unsigned char RXT[68];

void ethernet_interrupts()

{

packet_num++;

aaa=ReceivePacket (RXT,&rx_len);

DM9000_init();

}

int main(void)

{

unsigned int Success;

unsigned char TXT[] = { 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

0x01,0x60,0x6E,0x11,0x02,0x0F,

0x08,0x00,0x11,0x22,0x33,0x44,

0x55,0x66,0x77,0x88,0x99,0xAA,

0x55,0x66,0x77,0x88,0x99,0xAA,

0x55,0x66,0x77,0x88,0x99,0xAA,

0x55,0x66,0x77,0x88,0x99,0xAA,

0x55,0x66,0x77,0x88,0x99,0xAA,

0x55,0x66,0x77,0x88,0x99,0xAA,

0x55,0x66,0x77,0x88,0x99,0xAA,

0x00,0x00,0x00,0x20 };

//Initialize the LCD.

LCD_Init();

//Test the LCD.

//LCD_Test();

Success = DM9000_init();

LCD_Show_Text("");

if (Success == DMFE_SUCCESS)

{

//Tell the user if the DM9000A initialize or failed.

LCD_Show_Text("DM9000A");

LCD_Line2();

LCD_Show_Text("Initialized.");

alt_irq_register( DM9000A_IRQ, NULL, (void*)ethernet_interrupts );

}

else

{

LCD_Show_Text("DM9000 Failed.");

}

//printf("Device initialization complete.");

packet_num=0;

//Main loop.

while (Success == 0)

{

Success = TransmitPacket(TXT,0x40);

msleep(500);

outport(DE2_8_7SEGS_BASE ,packet_num);

}

LCD_Show_Text("TX Failed.");

return 0;

}

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