Atmel Data Gateway Interface

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