DMA transfer between peripherals

Djedjica

Other Parts Discussed in Thread: TM4C1294NCPDT

Hello everyone,

Have some questions so if you can give me some pointers since I'm not much experienced yet in this field. I'm looking for a way to fast transfer data without microcontroller much interaction, so to use DMA for this purpose. But problem is it is data received from ADC and it should be sent over SPI to ethernet controller. Can you please provide me some pointers so I can have at least safe start with this.

Kind regards

over 10 years ago

0 Chuck Davenport over 10 years ago

TI__Guru 59540 points

Hello Djedjica,

Can you first provide details of which device/board you are using so that we can be sure we are referencing the right documentation when formulating our suggestions?

0 Djedjica over 10 years ago in reply to Chuck Davenport

Intellectual 870 points

Sure, sorry for not mentioning that before. For testing purposes, I use EK tm4c1294gxl. We plan on using that controller tm4c1294ncpdt, but will be using external ethernet controller to which we'll send data using SSI.

0 Chuck Davenport over 10 years ago in reply to Djedjica

TI__Guru 59540 points

Hello Djedjica,

Can you have a look at this thread with code example to see if it helps.

e2e.ti.com/.../1152717

Given the user in this post is transferring from memory to SSIO Tx, you would need to adjust the source to be the ADC results register but it should give you the framework of what your looking for.

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DMA transfer between peripherals