The Embedded Debugger features an Atmel Data Gateway Interface
(DGI) by using either a SPI or I²C port. The DGI can be used to send a variety of data from
the SAM D11 to the host PC. For further information on how to use the DGI interface see
Embedded Debugger.
Table 1. DGI Interface Connections
When Using SPI| Pin on SAM D11 |
Function |
|---|
| PA27 |
GPIO/SPI SS (Slave select) (SAM D11 is
Master)(1) |
| PA09 |
SERCOM0 PAD[3] SPI MISO (Master In, Slave Out) |
| PA06 |
SERCOM0 PAD[0] SPI MOSI (Master Out, Slave in) |
| PA07 |
SERCOM0 PAD[1] SPI SCK (Clock Out) |
Note: - 1.PA27 is shared between SPI SS to the EDBG and VBUS detect on target USB. This is
implemented so the pin can detect if VBUS is present when configured as input with no
internal pull. If VBUS is present, the level on the pin will be high. If VBUS is not
present, the line is externally pulled low. It will not be possible to detect this if
the EDBG SPI DGI interface is enabled from Atmel Data Visualizer.
Table 2. DGI Interface Connections
When Using I²C| Pin on SAM D11 |
Function |
|---|
| PA08 |
SERCOM2 PAD[0] SDA (Data line) |
| PA09 |
SERCOM2 PAD[1] SCL (Clock line) |
Four GPIO lines are connected to the Embedded Debugger. The EDBG
can monitor these lines and time stamp pin value changes. This makes it possible to
accurately time stamp events in the SAM D11 application code. For further information on
how to configure and use the GPIO monitoring features see Embedded Debugger.
Table 3. GPIO Lines Connected to the EDBG| Pin on SAM D11 |
Function |
|---|
| PA16 |
GPIO0 |
| PA17 |
GPIO1 |
| PA14 |
GPIO2 |
| PA15 |
GPIO3 |