UART Echo

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	a53ss0-0 nortos
CPU + OS	a53ss0-0 freertos
CPU + OS	c75ss0-0 freertos
CPU + OS	mcu-r5fss0-0 nortos
CPU + OS	mcu-r5fss0-0 freertos
CPU + OS	r5fss0-0 freertos
CPU + OS	r5fss0-0 nortos
Toolchain	ti-arm-clang
Toolchain	arm.gnu.aarch64-none
Toolchain	ti-c7000
Board	am62dx-evm
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

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!!