1.7 USART Driver Asynchronous - UART Echo

This example uses the USART driver in asynchronous mode in Bare-Metal environment to communicate over the console. It receives and echo’s back the characters entered by the user.

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/async/usart_echo/firmware.

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

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

1. Open the Terminal application (Ex.:Tera term) on the computer
2. Connect to the Virtual COM port and configure the serial settings as follows:
   • Baud : 115200
   • Data : 8 Bits
   • Parity : None
   • Stop : 1 Bit
   • Flow Control : None
3. Build and Program the application using its IDE
4. The console displays the following message

   

5. Type a line of characters and press the Enter key
   Note: Number of characters entered before pressing enter key must be less than 256.
6. Entered line will be echoed back and the LED is toggled