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5.4 Embedded Debugger Implementation

SAM E54 Xplained Pro contain an Embedded Debugger (EDBG) that can be used to program and debug

the ATSAME54P20A using Serial Wire Debug (SWD). The Embedded Debugger also includes a Virtual

Com port interface over UART, a Data Gateway Interface over SPI, and I

C, and it includes four of the

SAM E54 GPIOs. The kit also includes an XAM extension processor to the Embedded Debugger for on-

board current measurement. Atmel Studio can be used as a front end for the Embedded Debugger.

5.4.1 Serial Wire Debug

The Serial Wire Debug (SWD) uses two pins to communicate with the target. For further information on

how to use the programming and debugging capabilities of the EDBG, see Embedded Debugger.

Table 5-24. SWD Connections

SAM E54 pin Function Shared functionality

PA30 SWCLK clock Cortex DBG and TRACE

PA31 SWDIO data Cortex DBG and TRACE

PB30 SWO output Cortex DBG and TRACE

RESET_N RESET Cortex DBG, TRACE, and RST BTN

5.4.2 Virtual COM Port

The Embedded Debugger acts as a Virtual Com Port gateway by using one of the ATSAME54P20A

UARTs. For further information on how to use the Virtual COM port, see Embedded Debugger.

Table 5-25. Virtual COM Port Connections

SAM E54 pin Function Shared functionality

PB24 SERCOM2 PAD[1] UART RXD (SAM E54 RX line) -

PB25 SERCOM2 PAD[0] UART TXD (SAM E54 TX line) -

5.4.3 Data Gateway Interface

The Embedded Debugger features a Data Gateway Interface (DGI) by using either an SPI or I

C. The

DGI can be used to send a variety of data from the ATSAME54P20A to the host PC. For further

information on how to use the DGI interface, see Data Visualizer and the EDBG User Guide.

Table 5-26. DGI Interface Connections when using SPI

SAM E54 pin Function Shared functionality

PD01 GPIO SPI SS (Slave select) (SAM E54

is Master)

PC04 SERCOM6 PAD[0] SPI MOSI (Master

Out, Slave in)

EXT2 and EXT3

PC07 SERCOM6 PAD[3] SPI MISO (Master

In, Slave Out)

EXT2 and EXT3

PC05 SERCOM6 PAD[1] SPI SCK (Clock Out) EXT2 and EXT3

SAM E54 Xplained Pro

DS70005321A-page 30

Microchip Technology SAM E54 Xplained Pro User Manual

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