TMS320F28388D: TMS320F28388D : How to achieve bidirectional data communication between CPU1 and CM.

Hi,

Dongjin Lee said:

The example file only shows data being sent from CPU1 to CM, not bidirectional communication. Is there a separate IPC example file for bidirectional data transmission?

There is not another example for bidirectional communication. Sending data from the CM to CPU1 should work the same, just beware of differences between C28x and ARM (like clearing interrupt flags and such).

Dongjin Lee said:

If I need to write new IPC settings, I will use the functions in the ipc.c file. Are there any resources or documentation available that explain this file? If so, could you share them with me?

We do not have a document for this either. There are comments above the functions in ipc.c and ipc.h that describe what they are doing, and the functions are short enough that they should be relatively easy to understand by reading through them. 

In the IPC section of the TRM, however, there are descriptions for the IPC registers which are modified in the IPC functions.

Dongjin Lee said:

Lastly, I have a question regarding the method of sending data. In the existing example file, data is generated arbitrarily like this:
for(i=0; i<8; i++)
{
readData[i] = rData[i];
}
I am unsure how to modify this part. Could you provide some guidance on the direction I should take?

Thank you.

Could you take a look at this post? https://e2e.ti.com/support/microcontrollers/c2000-microcontrollers-group/c2000/f/c2000-microcontrollers-forum/1292430/tms320f28388d-cpu1-to-cm-ipc-message-queue-problem

Best Regards,
Ben Collier