TMS570LS3137: SPI in Slave mode not triggered via DMA using FreeRTOS.

Amaury Carval

Part Number: TMS570LS3137
Other Parts Discussed in Thread: HALCOGEN, TMDS570LS31HDK

Tool/software:

I am trying to configure the SPI2 as a slave via DMA in the scope of a double SPI communication (one for TX and one for RX) using FreeRTOS.

I use Halcogen to configure the SPI communication.

My issue is that we do not see the trigger happening on the MOSI of SPI2 when we send bytes. It has been impossible for us to trigger the DMA to it.

Do you have a working example of such a system (SPI2 DMA in slave mode inside FreeRTOS) and the HCG file related to it?

over 1 year ago

0 jagadish gundavarapu over 1 year ago

TI__Guru 69891 points

Hi Amaury Carval,

(+) [FAQ] TMS570LC4357: Examples and Demos available for Hercules Controllers (E.g. TMS570x, RM57x and RM46x etc) - Arm-based microcontrollers forum - Arm-based microcontrollers - TI E2E support forums

The above FAQ consist of the SPI DMA examples, even though they are not based on RTOS can you please refer them and verify whether you are also doing same initializations are not?

If it doesn't solve the issue, then i will try to investigate further on this issue.

--
Thanks & regards,
Jagadish.

0 Amaury Carval over 1 year ago in reply to jagadish gundavarapu

Prodigy 30 points

Dear Jagadish,

Thank you for your support and links. Unfortunaltey, I’ve not been able to make it working. I tried the demo “spi_slave” (as it is, without freertos) without any luck.

It looks like the interrupts is not triggered, despite that the interrupt has been “activated” in halcogen. I’m wondering if i’m not missing a configuration parameter somewhere else?

Any further help would be great. I can provide the halcogen config of course if this can help, the code is the one from the demo. (and I’m using the HDK board).

Thanks!

Best Regards

0 jagadish gundavarapu over 1 year ago in reply to Amaury Carval

TI__Guru 69891 points

Hi,

Can i get your project? So that i can quickly debug it at my end.

--
Thanks & Regards,
Jagadish.

0 Amaury Carval over 1 year ago in reply to jagadish gundavarapu

Prodigy 30 points

I will send it to you via private message.

At the moment I am using the TMDS570LS31HDK. I want to create a system with spi5 as a master (TX) and spi 1,2 and 4 as a slave (RX) with a 2MHz - 16 bits configuration. I want to use the DMA regarding the fact that there is gonna be a lot of data received from the slave spi ports.

at the moment I connect spi5 to spi 1 to create a first dummy communication.

0 jagadish gundavarapu over 1 year ago in reply to Amaury Carval

TI__Guru 69891 points

Hi Amaury,

Apologies for the delay in my response.

I am on sick leave and i don't get time to work on this issue.

Are you still stuck on this issue?

If yes, then i can try to work on this issue and can provide my update by tomorrow evening.

--
Thanks & regards,
Jagadish.