1.5 DBGU Blocking

This example shows the read and write operation over a DBGU 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/dbgu/dbgu_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 (USB to Serial) COM port and configure the serial settings as follows:
   • Baud : 115200
   • Data : 8 Bits
   • Parity : None
   • Stop : 1 Bit
   • Flow Control : None
4. Type a line of characters and press the Enter key
5. Entered line will be echoed back and the LED is toggled