1.10 FLEXCOM USART Blocking

This application configures the FLEXCOM peripheral in USART mode and performs read and write operation in a blocking manner. The CPU polls the peripheral register continuously to manage the transfer. It receives a line of characters from the terminal window and echoes them back.

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/flexcom/usart/flexcom_usart_echo_blocking/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 configure, build and run bootstrap loader project and use it to bootstrap the application binaries.

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

1. Build the application using its IDE
2. Open the Terminal application (Ex.:Tera term) on the computer.
3. 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
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