1.19 USART Driver Synchronous - USART Echo

This example uses the USART driver in synchronous mode in RTOS 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/sync/usart_echo/firmware.

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

To load the application binary onto the target device, we need to use at91bootstrap loader. Refer to the at91bootstrap loader documentation for details on how to use it to bootstrap the application binaries.

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 EDBG/Jlink 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. Type a character and observe the output on the console as shown below:

   

5. LED toggles each time the character is echoed