All functionality of the DGI is centered around the implemented interfaces. All interfaces use the same USB protocol, but every interface has its own configuration parameters and handling of communication. For details, refer to the interface-specific sections. Note that not all interfaces are available on all boards implementing the DGI device. The available interfaces can be read through the USB protocol.
| Name | Identifier | Description |
|---|---|---|
| Timestamp | 0x00 | Service interface which appends timestamps to all received events on associated interfaces. |
| SPI* | 0x20 | Communicates directly over SPI in Client mode. |
| UART USART* |
0x21 | Communicates directly over UART in Client mode. Communicates directly over USART in Client mode. |
| I2C* | 0x22 | Communicates directly over I2C in Client mode. |
| GPIO | 0x30 | Monitors and controls the state of GPIO pins. |
| Power | 0x40 (data) | Receives data and sync events from the attached power measurement co-processors. |
| Debugger Polling | 0x50 | Polling of timestamped samples of the program counter,allowing an
insight in the program execution of the device. For more information, see Debugger Polling. |
| Reserved | 0xFF | Special identifier used to indicate no interface. |
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