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 in blocking, interrupt mode of operation. This example receives 8 characters and echos back the same. The application ends when the user types 8 characters.

To modify the example to use main domain UART, refer Accessing main and wakeup domain peripherals from MCU domain

Supported Combinations

Parameter	Value
CPU + OS	m4fss0-0 nortos
	r5fss0-0 freertos
Toolchain	ti-arm-clang
Board	am62x-sk, am62x-sk-lp, am62x-sip-sk
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

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.
• 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 enter 8 characters.

CCS Console:

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

UART Console:

This is uart echo test blocking mode
Receives 8 characters then echo's back. Please input..
12345678
All tests have passed!!