Xplained Pro; Embedded Debugger - Microchip Technology ATmega4809 Xplained Pro User Manual

3.

Xplained Pro

Xplained Pro is an evaluation platform which contains a series of microcontroller boards (evaluation kits)
and extension boards. Atmel Studio is used to program and debug the microcontrollers on these boards.
Atmel Studio includes Advanced Software Framework (ASF) and Atmel START, which has drivers and
demo code, and Data Visualizer, which supports data streaming and advanced debugging. Xplained Pro
evaluation kits can be connected to a wide range of Xplained Pro extension boards through standardized
headers and connectors. Xplained Pro extension boards have identification (ID) chips to uniquely identify
which boards are connected to the Xplained Pro evaluation kits.
3.1

Embedded Debugger

The ATmega4809 Xplained Pro contains an Embedded Debugger (EDBG) for on-board debugging. The
EDBG is a USB composite device with the following interfaces:
• Debugger
• Virtual COM Port
• Data Gateway Interface (DGI)
The EDBG can program and debug the ATmega4809 with the help of Atmel Studio. The UPDI interface is
connected between the EDBG and the ATmega4809 on the ATmega4809 Xplained Pro.
The Virtual COM Port is connected to a UART on the ATmega4809 and provides an easy way to
communicate with the target application through terminal software. It offers variable baud rate, parity, and
stop bit settings. The settings on the ATmega4809 must match the settings given in the terminal software.
Info: The Virtual COM Port in the EDBG requires the terminal software to set the Data
Terminal Ready (DTR) signal to enable the UART pins connected to the ATmega4809. If the
DTR signal is not enabled, the UART pins on the EDBG are kept in tri-state (high-z) to render
the COM Port not usable. The DTR signal is automatically set by some terminal software, but it
may have to be manually enabled in your terminal.
The DGI consists of several physical interfaces for bidirectional communication with the host computer.
Communication over the interfaces is bidirectional. It can be used to send event values and data from the
ATmega4809. Traffic over the interfaces can be timestamped by the EDBG for more accurate tracking of
events, but timestamping reduces the maximal data throughput. The
receive data through DGI.
The EDBG controls two LEDs on the ATmega4809 Xplained Pro, a power LED and a status LED. The
following table provides details on how the LEDs are controlled in different operation modes.
©
2018 Microchip Technology Inc.
ATmega4809 Xplained Pro
Data Visualizer
User Guide
Xplained Pro
is used to send and
DS50002716A-page 7