Empty Project

Table of Contents

• Introduction
• Supported Combinations
• Steps to Run the Example
• Writing PRU code

Introduction

This example acts as a getting started point for PRU firmware development in assembly. It demoes how to access local memory locations of PRU.

Supported Combinations

Parameter	Value
ICSSG	ICSSG0 - PRU0
Toolchain	pru-cgt
Board	am64x-evm
Example folder	examples/pru_io/empty/

Steps to Run the Example

• When using CCS projects to build, import the CCS project from the above mentioned Example folder path. After this you should see two linked files: main.asm and linker.cmd. The main.asm contains sample code for accessing Local PRU memories available: DMEM0 (64kB), DMEM1 (64kB) and Shared Ram (64kB).

• Build the PRU project.

  Note

  Prerequisite: PRU-CGT-2-3 (ti-pru-cgt) should be installed at: C:/ti/

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

Writing PRU code

• You can modify this example to write your own firmware. <sdk-install-dir/examples/pru_io/adc/> contains some PRU projects which can act as reference. PRU sources are usually separated out in a firmware/ subfolder in all these example project folders.
• You can change the core in project properties to develop firmware for other PRU cores.