MessageQ_open() problem on DSP side

Naveen Shetti

Other Parts Discussed in Thread: SYSBIOS

Hi,

I have Vayu Evm xc5777x CPU board. I am using ti-glsdk_dra7xx-evm_6_04_00_02 which provide component-sources/ipc_3_21_00_07 for Linux(ARM) to ti sys-bios(DSP) communication.

I am trying to MessageQ_open() on DSP side but it is not able to open messageQ created on the ARM side.

This is the snippet of the code:

do {
status = MessageQ_open(remoteQueueName, &queueIdARM);
Task_sleep (1);
} while (status == MessageQ_E_NOTFOUND);

if (status < 0) {
printf("Error in MessageQ_open for ARM [%d]\n", status);
}
else {
printf("Remote queueId for ARM[0x%x]\n", queueIdARM);
}

But here is getting struct at MessageQ_open() only.

I am able to successfully doing it on ARM side to open DSP1 and DSP2 created messageQ.

Regards

Naveen Sheeti

over 9 years ago

0 Yanko Todorov-XID over 9 years ago

TI__Mastermind 29520 points

Hello Naveen,

MessageQ is a software module that can be used to pass messages between different threads on the same processor or threads on different processors.

For more information see following link - http://processors.wiki.ti.com/index.php/IPC_Users_Guide/MessageQ_Module#Allocating_a_Message

I think that it is not possible to create MessageQ between both Cortex A15 cores in Vayu.

See the note:

IPC, SMP BIOS is currently only available for dual-core ARM M-class devices, sometimes called "Benelli" or "Ducati".

Specifically where IPC 3.x is concerned, SMP BIOS is only applicable to the following cores/devices:

IPU on OMAP54XX
IPU1 (and IPU2, if present) on DRA7XX (e.g. Vayu)

http://processors.wiki.ti.com/index.php/IPC_3.x_FAQ

There is a thread in e2e, in which was discussed a similar topic - http://e2e.ti.com/support/embedded/tirtos/f/355/p/336313/1175538.aspx

Refer to this link to obtain more information about IPC:

http://downloads.ti.com/dsps/dsps_public_sw/sdo_sb/targetcontent/ipc/3_21_00_07/exports/ipc_3_21_00_07/ipc_3_21_00_07_release_notes.html

http://e2e.ti.com/support/embedded/tirtos/f/355/t/290974.aspx

Best regards,

Yanko

0 Naveen Shetti over 9 years ago in reply to Yanko Todorov-XID

Intellectual 690 points

Hello Yanko,

Thanks for the response.

But this is not my concern. What am I basically trying to achieve that DSP1 or DSP2(SYSBIOS) should be able to open messageQ created on the ARM(linux ) side. From the ARM(linux) side I am able to open messgeQ created on the DSP side, but this operation is giving error when I am trying to open messgeQ from DSP side.

The error is MessageQ_E_NOTFOUND.

Please help in this regard.

Thanks & Regards

Naveen Sheeti

Processors

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MessageQ_open() problem on DSP side