midiuart.c File Reference

#include <ntddk.h>
#include "midiuart.h"

Include dependency graph for midiuart.c:

Go to the source code of this file.

Functions
BOOLEAN	WaitForMidiUartStatus (IN PUCHAR UartBasePort, IN UCHAR StatusFlags, IN ULONG Timeout)
BOOLEAN	WriteMidiUartByte (IN PUCHAR UartBasePort, IN UCHAR Data, IN ULONG Timeout)
BOOLEAN	WriteMidiUartMulti (IN PUCHAR UartBasePort, IN PUCHAR Data, IN ULONG DataLength, IN ULONG Timeout)
BOOLEAN	ReadMidiUartByte (IN PUCHAR UartBasePort, OUT UCHAR *Data, IN ULONG Timeout)

Function Documentation

ReadMidiUartByte()

BOOLEAN ReadMidiUartByte	(	IN PUCHAR	UartBasePort,
		OUT UCHAR *	Data,
		IN ULONG	Timeout
	)

Definition at line 75 of file midiuart.c.

{
    if ( ! Data )
    {
        return FALSE;
    }
 
    if ( ! WaitForMidiUartDTR(UartBasePort, Timeout) )
    {
        return FALSE;
    }
 
    *Data = READ_MIDIUART_DATA(UartBasePort);
 
    return TRUE;
}

WaitForMidiUartStatus()

BOOLEAN WaitForMidiUartStatus	(	IN PUCHAR	UartBasePort,
		IN UCHAR	StatusFlags,
		IN ULONG	Timeout
	)

Definition at line 19 of file midiuart.c.

{
    ULONG RemainingTime = Timeout;
 
    while ( RemainingTime -- )
    {
        if ( READ_MIDIUART_STATUS(UartBasePort) & StatusFlags )
        {
            return TRUE;
        }
    }
 
    return FALSE;
}

WriteMidiUartByte()

BOOLEAN WriteMidiUartByte	(	IN PUCHAR	UartBasePort,
		IN UCHAR	Data,
		IN ULONG	Timeout
	)

Definition at line 38 of file midiuart.c.

{
    if ( ! WaitForMidiUartCTS(UartBasePort, Timeout) )
    {
        return FALSE;
    }
 
    WRITE_MIDIUART_DATA(UartBasePort, Data);
 
    return TRUE;
}

Referenced by WriteMidiUartMulti().

WriteMidiUartMulti()

BOOLEAN WriteMidiUartMulti	(	IN PUCHAR	UartBasePort,
		IN PUCHAR	Data,
		IN ULONG	DataLength,
		IN ULONG	Timeout
	)

Definition at line 54 of file midiuart.c.

{
    ULONG DataIndex;
 
    for ( DataIndex = 0; DataIndex < DataLength; ++ DataIndex )
    {
        if ( ! WriteMidiUartByte(UartBasePort, Data[DataIndex], Timeout) )
        {
            /* We failed - don't try writing any more */
            return FALSE;
        }
    }
 
    return TRUE;
}