The Embedded Debugger features an Atmel Data Gateway Interface (DGI) by using
either a SPI or I²C. The DGI can be used to send a variety of data from the ATSAMB11G18A to the host PC. For further information
on how to use the DGI interface, see Atmel Data Visualizer and the EDBG User Guide.
Table 1. DGI Interface Connections When Using
SPI| SAM B11 pin |
Function |
Shared functionality |
|---|
| LP_GPIO_7 |
GPIO/SPI SS (Slave select) ((SAM B11 is Master)) |
- |
| LP_GPIO_13 |
SPI MISO (Master In, Slave Out) |
EXT1 |
| LP_GPIO_11 |
SERCOM5 PAD[2] SPI MOSI (Master Out, Slave in) |
EXT1 |
| LP_GPIO_10 |
SERCOM5 PAD[3] SPI SCK (Clock Out) |
EXT1 |
Table 2. DGI Interface Connections When Using
I²C| SAM B11 pin |
Function |
Shared functionality |
|---|
| LP_GPIO_8 |
SDA (Data line) |
EXT1 |
| LP_GPIO_9 |
SCL (Clock line) |
EXT1 |
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 B11 application code. For further information
on how to configure and use the GPIO monitoring features, see Atmel Data Visualizer and the EDBG User Guide.
Table 3. GPIO Lines Connected to the EDBG| SAM B11 pin |
Function |
Shared functionality |
|---|
| LP_GPIO_22 |
GPIO0 |
USER LED |
| LP_GPIO_23 |
GPIO1 |
USER BUTTON |
| LP_GPIO_18 |
GPIO2 |
EXT3 |
| LP_GPIO_20 |
GPIO3 |
|