1.8 USART Driver Synchronous - USART Echo

This example application demonstrates the synchronous mode of the USART driver by echoing the received characters.

Description

This example uses the synchronous mode of the USART driver to communicate over UART console. It receives and echoes back the characters entered by the user.

Downloading and Building the Application

To clone or download this application from Github, go to the main page of this repository and then click Clone button to clone this repository or download as zip file. This content can also be downloaded using content manager by following these instructions.

Path of the application within the repository is apps/driver/usart/sync/usart_echo/firmware.

To build the application, refer to the following table and open the project using its IDE.


Project Name	Description
sam_ha1_xpro_freertos.X	MPLABX project for SAM HA1G16A Xplained Pro Evaluation Kit

Setting Up the Hardware

The following table shows the target hardware for the application projects.


Project Name	Description
sam_ha1_xpro_freertos.X	SAM HA1G16A Xplained Pro Evaluation Kit

Setting Up SAM HA1G16A Xplained Pro Evaluation Kit

Connect the Debug USB port on the board to the computer using a micro USB cable
Note: ATSAMHA1G16A device in SAM HA1G16A Xplained Pro board is not recommended for new design, hence replace the device with ATSAMHA1G16AB device. Connect the supported external debugger to Cortex Debug Port.

Running the Application

Open the Terminal application (Ex.:Tera Term) on the computer.
Configure the serial port settings as follows:
- Baud : 115200
- Data : 8 Bits
- Parity : None
- Stop : 1 Bit
- Flow Control : None
Build and program the application using its IDE.
Type a character and observe the output on the console as shown below:
- On success, the character typed is echoed back and an LED toggles each time a character is echoed.

Refer to the following table for LED name:


Board	LED Name
SAM HA1G16A Xplained Pro Evaluation Kit	LED0