1.20 USART Driver Synchronous - USART Multi Instance

This example uses the USART driver in synchronous mode RTOS environments to communicate over two consoles. It receives and echoes back the characters entered by the user on the respective console.

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_multi_instance/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 for both ports
2. Connect the COM port and configure the serial settings as follows (for both ports):
   • Baud : 115200
   • Data : 8 Bits
   • Parity : None
   • Stop : 1 Bit
   • Flow Control : None
3. Build and program the application using its IDE
4. Type ten characters and observe the output on the two consoles as shown below:
   • If success, when ten characters are typed it will be echoed back on the console and LED is toggled every time the characters are echoed
   • Console 1

     

   • Console 2