UDMA Memcpy Polling

Table of Contents

• Introduction
• Supported Combinations
• Steps to Run the Example
• See Also
• Sample Output

Introduction

This example performs UDMA block copy transfer using Type 15 Transfer Record (TR15) using Transfer Record Packet Descriptor (TRPD) in polling mode.

The application opens and configures a BCDMA channel using SysConfig. Then the application prepares a TRPD for a 1D transfer from source to destination buffer, submits the request to DMA, waits for the DMA to complete by polling the channels's completion ring accelerator (RA).

Once the transfer it completes, it does cache operation for data coherency and compares the source and destination buffers for any data mismatch.

Supported Combinations

Parameter	Value
CPU + OS	r5fss0-0 freertos
Toolchain	ti-arm-clang
Board	am62x-sk, am62x-sip-sk
Example folder	examples/drivers/udma/udma_memcpy_polling

Steps to Run the Example

• When using CCS projects to build, import the CCS project for the required combination and build it using the CCS project menu (see Using SDK with CCS Projects).
• When using makefiles to build, note the required combination and build using make command (see Using SDK with Makefiles)

Attention

As the wake-up R5 is the device manager, it needs to be started by the SBL. So it can not be loaded through CCS. It should be flashed and booted through SBL.

• Refer Flash an example application for flashing the application.

See Also

UDMA

Sample Output

Shown below is a sample output when the application is run,

[UDMA] Memcpy application started ...
All tests have passed!!