F28M35H52C: Concerto C28 Core DMA peripheral support

GZeev

Part Number: F28M35H52C
Other Parts Discussed in Thread: CONTROLSUITE

Hi,

The Concerto C28 core supports DMA for McBSP peripheral. Does it support DMA when the McBSP peripheral is configured as SPI?

Thanks, Zeev

over 8 years ago

0 Mark Labbato over 8 years ago

Guru 30330 points

Hi there Zeev,

The McBSP is supported with DMA in all modes of operation.

0 GZeev over 8 years ago in reply to Mark Labbato

Intellectual 270 points

Thanks Mark for your fast response.

I work with serial EEPROM which requires input clock in order to output its memory data. Therefore I transmit dummy data and then I get the info from the EEPROM.
How can I implement it using the DMA?

0 Mark Labbato over 8 years ago in reply to GZeev

Guru 30330 points

Please go through the examples in controlSuite. There is a MCBSP as SPI with DMA example. This does just do loop back. You would essentially set up the DMA to "transmit" as many dummy words as needed. you could have it loop over a single dummy word to save memory, rather than making a memory buffer with dummy data of equal size. Another DMA channel would be set up to copy the received data from the DRRx registers and move them into a memory buffer.
Here is the path for the example I am referring to C:\ti\controlSUITE\device_support\f28m35x\v210\F28M35x_examples_Control\mcbsp_spi_loopback

0 GZeev over 8 years ago in reply to Mark Labbato

Intellectual 270 points

Thanks Mark again for your fast response.

I have ControlSuite Version 3.3.9 and it has only v207 directory. On mcbsp_spi_loopback direrctory there is only example of McBSP as SPI without any reference to DMA.

I will download your latest ControlSuite and check v210 directory.

Anyway I understood your suggestion and I will try to implement it

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F28M35H52C: Concerto C28 Core DMA peripheral support