Access this view through device.brain.

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State views

  • isRunningProgram and activeProgram
  • battery, button, and settings
  • cpu0Version, cpu1Version, and systemVersion
  • isAvailable and uniqueId

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Operations

  • getValue() and setValue()
  • listFiles(), readFile(), writeFile(), removeFile(), and removeAllFiles()
  • listProgram() and uploadProgram()
  • setActiveProgram(slot), setMatchMode(mode), and the lower-level runProgram(slot)/stopProgram() aliases for program and competition state. Each returns Ok(undefined) on acknowledgement or Err(VexSerialError) on NACK, timeout, or disconnect.
  • captureScreen()
  • uploadFirmware()
uploadFirmware() downloads and writes VEXos components. Loss of power, incompatible firmware, or interrupted communication can leave the device unusable. Keep firmware updates out of normal application flows.

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Program control

activeProgram is read-only state. Use await setActiveProgram(slot) to load slots 1 through 8 and await setActiveProgram(0) to stop the running program. The method returns Err(VexSerialError) when the device is disconnected or does not acknowledge the command. View source