DE2 board USB communication

Hi,

I’m modifying the firmware coding of device controller which found from DE2 CD.

My target is to send 16 bytes data block per transmission.

I had modify the coding from ISR.c and mainloop.c

But I still fail to make it transfer 16 bytes data per packet.

(this is the coding from interrupt service routine,ISR.c)

void Isr_Ep02Done(void)

{

unsigned char bbuf[16];

int i = 0;

Hal4D13_GetEndpointStatusWInteruptClear(EPINDEX4EP02);

Hal4D13_ReadEndpoint(EPINDEX4EP02,&bbuf, 16); //error was found here : passing arg 2 of //'hal4d13_readendpoint' from incompatible pointer type.

if( sendCount < length)

{

Hal4D13_WriteEndpoint(EPINDEX4EP02, data + sendCount, 16);

Hal4D13_GetEndpointStatusWInteruptClear(EPINDEX4EP02);

sendCount += 16;

if(sendCount > length)

{

sendCount = 0;

length = 0;

for( i = 0; i < 65; i++)

data[i] = 0;

}

}

}

Can anyone give me suggestion on how can I debug this error? I’m stuck….

Thanks,

Summer

According to the function prototype

USHORT Hal4D13_ReadEndpoint(UCHAR bEPIndex, UCHAR * buf, USHORT len);

the correct syntax is

Hal4D13_ReadEndpoint(EPINDEX4EP02,bbuf, 16);

It has nothing to do with NIOS II, just a basic C syntax issue.

Hi all,

Now, i am building SOPC system to make communication between PC and USB in DE2 using USB chip controller philips ISP1362. I read in such tutorial (lower version of NIOS II 9.0) that I have to make interface to the NIOS II Processor by choosing "Interface to User Logic" in the subtree "Legacy Components". But I didn't find that interface in NIOS II 9.0 IDE. What is the name of that interface in the NIOS II 9.0 IDE?

Thank you...

hi,

i'm doing finnal year project now, the project title is: doing an USB communicatin in VHDL, it is same with your project, DE2board, ISP1362... I haven't learnt VHDL before, so i have no idea about it. Have you finish your project? I need you help...Thank you very much^^

while (tmp = '0') loop

if (buffer_full = '0') then tmp <= '0';

elsif (buffer_full = '1') then tmp <= '1';

end if;

end loop;

Error: loop must terminate within 10000 iterations

Error: can't elaborate top-level user hierarchy

anyone who can help me find where is my mistake? thanks veryu much

you don't have any pause in your loop, so if buffer_full is 0, then you will get stuck in the loop indefinitely.

What are you trying to do?