AM5728: SPI Slave DMA setting

Alberto Soattin

Part Number: AM5728

Hi Support,

My customer is implementing full SPI master-slave chain working with AM5728.

They are using our code example (main_mcspi_slave_mode.c) in which we state /* DMA is only enabled in master mode as a workaround for the DMA issue in slave mode */

What is in specific this issue?

Thanks in advance,

Alberto

over 8 years ago

0 Biser Gatchev-XID over 8 years ago

TI__Guru**** 393215 points

Alberto,

Please post what software you are using.

0 Alberto Soattin over 8 years ago in reply to Biser Gatchev-XID

TI__Genius 16905 points

TI-RTOS is in use here (as per example code reported above).
Thanks,
Alberto

0 Biser Gatchev-XID over 8 years ago in reply to Alberto Soattin

TI__Guru**** 393215 points

Thanks. The RTOS team have been notified. They will respond here.

0 Rahul Prabhu over 8 years ago in reply to Alberto Soattin

TI__Guru** 116780 points

Alberto,

This is a known issue with PRSDK3.3 release that is being resolved in the Processor SDK RTOSv4.0 release that will be available at the end of this week. If the customer needs this right away then, we can provide a patch but we recommend that the customer picks the fix from the GA release.

The update will be reflected in the release notes for these devices. Look for the bug ID PRSDK-1929.

Regards,
Rahul

0 Alberto Soattin over 8 years ago in reply to Rahul Prabhu

TI__Genius 16905 points

Rahul,

customer tested this with PRSDK 4 and this is solved.
They have other issues I'll discuss in separate thread.
Thanks,
Alberto

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AM5728: SPI Slave DMA setting