IOCTL_SERIAL_CLR_DTR

IOCTL_SERIAL_CLR_DTR

This code is used by the COM_IOControl function to set the Data Terminal Ready (DTR) signal to low.

Parameters

dwOpenData: Handle returned from a call to the COM_Open function.
dwCode: Specifies this code.
pBufIn: Ignored.
dwLenIn: Ignored.
pBufOut: Ignored.
dwLenOut: Ignored.
pdwActualOut: Ignored.

Remarks

The control code is declared in the Pegdser.h header file and defined in the Mdd.c file.

See Also

IOCTL_SERIAL_SET_DTR, COM_IOControl, COM_Open