EDMA Link Transfer

Table of Contents

• Introduction
• Supported Combinations
• Using SDK with SysConfig
• Steps to Run the Example
• Sample Output

Introduction

This example performs EDMA transfer test using link mode.

• The link mode allows the entire PaRAM set to be reloaded from a location within the PaRAM memory map.
• The PaRAM set is initialized with two channels and sets the Link field of the PaRAM set associated with first channel to point to the PaRAM set associated with second channel. The transfer is AB Synchronized, which requires CCNT triggers to complete the transfer.
• The source memory is initialized with sample data and destination memory is initialized with zeroes for validation.
• Upon completion of a transfer, the current transfer parameters are reloaded with the parameter set pointed to by the 16-bit link address field of the current parameter set.
• Intermediate and final transfer interrupts are enabled and the transfer completion interrupt status is polled to determine if the status is set before giving next trigger.

Supported Combinations

Parameter	Value
CPU + OS	m4fss0-0 freertos
	m4fss0-0 nortos
Toolchain	ti-arm-clang
Boards	xWRL6432-evm
Example folder	examples/drivers/edma/edma_link_transfer/

Using SDK with SysConfig

A GUI tool SysConfig is used to configure different modules and peripherals of the example. Using this tool, users can select and customize different modules and peripherals. The SysConfig tool will generate the code for initializing and configuring these modules. This configuration is saved to a file called example.syscfg for every example. To know more about how to use SDK with SysConfig, Visit this page

Using SDK with SysConfig

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)
• Launch a CCS debug session and run the executable, see CCS Launch, Load and Run

Sample Output

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

[EDMA] Link Transfer Test Started...
[EDMA] Link Transfer Test Completed!!
All tests have passed!!