BTH_HCI_IOCTL_GET_HARDWARE_STATUS (Compact 2013)

3/26/2014

This I/O control message retrieves the current state of the hardware. Send this message with DeviceIoControl.

Syntax

BOOL DeviceIoControl(
    HANDLE hDevice,           // handle to device
    DWORD dwIoControlCode,    // use BTH_HCI_IOCTL_GET_HARDWARE_STATUS
    LPVOID lpInBuffer,        // pointer to input buffer
    DWORD nInBufferSize,      // input buffer size
    LPVOID lpOutBuffer,       // pointer to output buffer
    DWORD nOutBufferSize,     // output buffer size
    LPDWORD lpBytesReturned,  // number of bytes returned
    OVERLAPPED lpOverlapped   // pointer to OVERLAPPED structure
);

Parameters

• hDevice
  The handle to the device.

• dwIoControlCode
  [in] Control code for the operation. Use BTH_HCI_IOCTL_GET_HARDWARE_STATUS for this operation.

• lpInBuffer
  [in] Not used; set to NULL.

• nInBufferSize
  [in] Not used; set to zero.

• lpOutBuffer
  [out] Points to a DWORD that receives one of the values in the following table.

  Value	Description
  HCI_HARDWARE_UNKNOWN	The stack is not present.
  HCI_HARDWARE_RUNNING	The adapter is installed and the stack is running.
  HCI_HARDWARE_INITIALIZING	The adapter might be installed. The stack is on the way up. Call again later.
  HCI_HARDWARE_ERROR	The adapter might be installed. The stack is on the way down. Call again later.
  HCI_HARDWARE_SHUTDOWN	The adapter is installed, but the stack is not running.
  HCI_HARDWARE_NOT_PRESENT	The adapter is not present.

• nOutBufferSize
  [in] Set to sizeof(int).

• lpBytesReturned
  [out] Same as nOutBufferSize.

• lpOverlapped
  Ignored.

Requirements

Header

bt_ddi.h

See Also

Reference

Bluetooth HCI IOCTLs