CCS/TMS320C6678: ISR execute and receive data process in the hyplnk_exampleProject

Thanks.

I use MCSDK 2.1.2.6.

I might have misunderstood the code.

Then there's a question.
When the sender receives the data, how does the receiver know that the data was received?
Wouldn't data be written and erased in the same space?

Hi.
Thank you for your reply.

I confirmed what you said. (Error ISR)  ...  The example project had been set to intlocal = 1, int2cfg = 0, so I thought it was not caught in LOOPBACK mode.
In general, ISR was mistaken because it thought it would confirm and process reception. I'll analyze it a little more.
 
When the sender sends the data, the receiver must handle the delivered data without omission.
How do you process reception?   (Question same as see above.)

Hi.

I'm trying to connect two DSPs and send and receive data.
But now I have one evm6678 board.

In the example project provided, the LOOPBACK mode can be used on one evm6678 board to test the function??
In the example project code, the intlocal is modified to zero and the remote device is being tested to receive incoming interrupts, but it is not working.

Please answer.

Hi,

You can use 2 6678 EVM connected together via Hyperlink cable for data exchange test. You can also generate interrupt from one board to another.

If you only have one EVM, you can run the Hyperlink in loopback mode, and also test interrupt in loopback. You need play with intlocal and int2cfg bit to understand how it work (check the hyperlink user guide). Also, there is a test project and discussion found here: https://e2e.ti.com/support/processors/f/791/t/193417?Generating-interrupts-on-hyperlink-recieve.

I used it several years ago and I remember it worked.

Regards, Eric 

Hi.
Thank you for your reply.

I'm testing the evm6678 board in LOOPBACK mode.
It doesn't work to see the code you answered and modify parts of the example project code to test.

In the example project provided, the modifications are as follows:

1.hyplnkLLDCfg.h

2.hyplnkisr.c

3.hyplnkLLDIFace.c

I referred to "1462.Hyperlink_EVM_example_LE.zip" code.

HyperLink Register status as see below (CORE0 execute)

Q1 ) Is there any modify wrong, or is there anything else that needs to be done?

    This code is not execute ISR ...    I don't understand information 64 ?? 

>>>  I modified the HostInterrupt and EventId values in the above modification codes as follows for test. ( same supported example source )

        CSL_CPINTC_mapSystemIntrToChannel (hnd, CSL_INTC0_VUSR_INT_O, 32);

        CSL_CPINTC_enableHostInterrupt (hnd, 32);

        hyplnkExampleIntcHnd = CSL_intcOpen (&hyplnkExampleIntcObj, 21, &vectId, NULL);

        eventId = 21;
        hyplnkExampleEvtHdlrRecord[0].arg     = (void *)eventId;

In the modified code, ISR was executed once.
However, ISR did not run in the transfer process that was run in the example project. ( at hyplnkExampleIOCycle(); )

If I write 0x00000002 randomly on the Interrupt Pending/Set Register through the memory browser, ISR is executed.

Control register 0x6202, 0x6282, 0x2202, 0x2282, 0x6082, 0x2082    ...   for intlocal and int2cfg setting test same.

Q2 ) Is there any modify wrong, or is there anything else that needs to be done? 

        When does the interrupt packet go? ( A hyperlink transmission does not activate the receive interrupt. )

No interruptions are generated.  (as see below Test-LOG)

 ============== begin REMOTE registers after initialization ===========
Status register contents:
  Raw        = 0x0440080f
Link status register contents:
  Raw       = 0xfdf0bdf0
Control register contents:
  Raw             = 0x00006082
============== end REMOTE registers after initialization ===========

Hi.

I did test in loopback as see above but it's not working.
I modified related section of example project by refer your reply.

When a sender sends data, i wants to activate the receive interrupt.

I think there is still a problem with the setup for the generate sw interrupt.

Please look at my experiment and give me advice.

What is wrong or strange ??

Thanks.

Hi,

I need to create a CCS project and code for testing Hyperlink interrupt in loopback mode. We don't have production code and the E2E code is for reference only not maintained. This may take some time.

Regards, Eric

Hi.
Thank you for your reply.

Do you have not a product code?~~
I thought it would be relatively simple.

It was hoped that only SW-generated interrupt would be reviewed.
The source of the site provided was not felt to be the source of evm6678.

Please review even if it takes time.