// ntddser.h

// CTL_CODE(0x001b, 0x00d, METHOD_BUFFERED, FILE_ANY_ACCESS)
#define IOCTL_SERIAL_CLR_RTS 0x001B0034
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Windows Driver Kit DDI reference (ni-ntddser-ioctl_serial_clr_rts)

IOCTL_SERIAL_CLR_RTS IOCTL

Description

The IOCTL_SERIAL_CLR_RTS request clears the request to send (RTS) control signal.

To set RTS, a client can use an IOCTL_SERIAL_SET_RTS request.

If the handshake flow control of the device is configured to automatically use RTS, a client cannot clear or set RTS.

Parameters

Major code

Input buffer

None.

Input buffer length

None.

Output buffer

None.

Output buffer length

None.

Input/output buffer

Input/output buffer length

Status block

The Information member is set to zero.

-The Status member is set to one of the Generic Status Values for Serial Device Control Requests. A status of STATUS_INVALID_PARAMETER indicates that the handshake flow control of the device is set to automatically use RTS.

IOCTL_SERIAL_CLR_RTS - NtDoc

NtDoc

Windows Driver Kit DDI reference (ni-ntddser-ioctl_serial_clr_rts)

IOCTL_SERIAL_CLR_RTS IOCTL

Description

Parameters

Major code

Input buffer

Input buffer length

Output buffer

Output buffer length

Input/output buffer

Input/output buffer length

Status block

-The Status member is set to one of the Generic Status Values for Serial Device Control Requests. A status of STATUS_INVALID_PARAMETER indicates that the handshake flow control of the device is set to automatically use RTS.

See also