UART Echo

Table of Contents

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

Introduction

This example demonstrates the UART RX and TX operation by echoing char that it recieves, configured in blocking, interrupt mode of operation. When user types 'quit', the application ends.

This example shows the usage of UART Api's which receives one character at a time and echos back the same to the console using UART_write.

Supported Combinations

Parameter	Value
CPU + OS	r5fss0-0 freertos
	r5fss0-0 nortos
	m4fss0-0 nortos(As am243x-lp has no MCU UART used for console application, M4 core support excluded for am243x-lp)
Toolchain	ti-arm-clang
Boards	am243x-evm, am243x-lp
Example folder	examples/drivers/uart/uart_echo

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
• Please select the UART port used for console as mentioned in Setup UART Terminal

See Also

UART

Sample Output

Shown below is a sample output when the application is run, Please note that application prints in both CCS and UART console. In UART console you need to type characters and then enter and type 'quit' to exit from the application.

CCS Console:

[MAIN_Cortex_R5_0_0] [UART] Echo example started ...
All tests have passed!!

UART Console:

Input any string and press `enter`, keep local echo off, type `quit` to exit ...
This is UART Echo Test
quit
All tests have passed!!