RTOS/TMS320DM8127: How to transfer data between dsp and m3?

Hi,

Can you please explain your usecase?

Which links are you using in dsp and m3 side?

Hi Anuj, thanks for your answer, my usecase is as follows:

I send data from DSP_SDNull(dsp) link to tyLink(m3vpss).

Regards , Tim.

Hi,

You can send data using System_linkControl or System_sendLinkCmd api.

Is it crashing when you are not sending data from dsp?

Each link has their msgQueue to handle the commands and all the commands will be queued up.

Hi, Anuj

It won't be crashing when not sending.

When I reduce the sending frequency, it takes longer to crash. 

When i set the last param ture as:

        System_linkControl(SYSTEM_LINK_ID_TY, TY_LINK_CMD_RECTANGLE_PARAM, &draw_param, sizeof(DRAW_PARAM),TRUE);

There is a warning:

 [m3vpss ] 733237:WARN
 [m3vpss ] MBX:Received unexpected ack msg. Expected:8eb91d98,Received:8eb964d8

 

Regards, Tim.

 

Hi,
If you set the last arg as TRUE then it will wait for the acknowledgement for the sent msg.
As you are sending the msg very frequently so don't set last arg as TRUE set it as false so that it will not wait for the acknowledgement.

Hi, Anuj
When set to false, it crashes as well.
Is there anything else i need to pay attention to in the tyLink?
Regards, Tim.