devicesdk dev

devicesdk dev

Run the local development simulator for DeviceSDK device scripts

Usage

devicesdk dev [flags]

Flags

  • -c, --config <path> - Path to the devicesdk.ts config file (defaults to ./devicesdk.ts).
  • -p, --port <port> - Port for the dev server (default: 8181).

Description

devicesdk dev starts a local simulator that loads your devicesdk.ts, bundles your device scripts with esbuild, and runs them in a browser-based simulator at http://localhost:8181. Useful for iterating on a device script without flashing a real board on every change.

The simulator wires up:

  • A pretend GPIO/PWM/ADC bus you can drive from the UI.
  • An I2C bus mock with the bundled SSD1306 OLED + BME280 sensor stubs.
  • Live reload - saving a src/devices/*.ts rebuilds and reloads.
  • Console output piped to your terminal.

What the simulator can't do

  • Real hardware peripherals not yet supported in the simulator (notably PIO/WS2812 strips). For those, deploy and flash a real board.
  • Inter-device RPC across a real fleet - the simulator runs one device at a time.
  • Cron triggers - for those, deploy and rely on the actual cron scheduler.

Examples

# Default: read ./devicesdk.ts, serve on :8181
devicesdk dev

# Custom port
devicesdk dev --port 3000

# Custom config
devicesdk dev --config ./devicesdk.dev.ts