> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.nvidia.com/holoscan/sensor-bridge/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.nvidia.com/holoscan/sensor-bridge/_mcp/server.

# hololink::emulation::STM32HSBEmulatorCtxt

> STM32-specific HSBEmulatorCtxt extension.

STM32-specific [HSBEmulatorCtxt](hsbemulatorctxt) extension.

`base` (the common [HSBEmulatorCtxt](hsbemulatorctxt)) is the first member; the rest is STM32-only state (HAL handles, SPI ctxt, BootP scheduling, and the file-scope data-plane array). No mutex — STM32 is single-threaded.

```cpp showLineNumbers={false}
#include <hololink/emulation/hsb_emulator.hpp>
```

***

## Member variables

| Name                   | Type                  | Description |
| ---------------------- | --------------------- | ----------- |
| `base`                 | `HSBEmulatorCtxt`     |             |
| `data_plane_list`      | `DataPlane *`         |             |
| `data_plane_count`     | `unsigned short`      |             |
| `eth_handle`           | `ETH_HandleTypeDef`   |             |
| `spi_ctxt`             | `SpiControllerCtxt *` |             |
| `up_time_msec`         | `uint32_t`            |             |
| `next_bootp_time_msec` | `uint32_t`            |             |