SPORT_WRITE_DATA (W*32, W*64)

Serial Port I/O Function: Outputs data to the specified port.

Module: USE IFPORT

Syntax

result = SPORT_WRITE_DATA (port, data [, count])

port
(Input) Integer. The port number.

data
(Input) Character*(*). The data to be output.

count
(Input; optional) Integer. The count of bytes to write. If the value is zero, this number is computed by scanning the data backwards looking for a non-blank character.

Results

The result type is INTEGER(4). The result is zero if successful; otherwise, a Windows* error value.

Note

When hardware (DTR, RTS, etc.) or software (XON/XOFF) flow controls are used, the functions SPORT_WRITE_DATA and SPORT_WRITE_LINE can write less bytes than required. When this occurs, the functions return the code ERROR_IO_INCOMPLETE, and the return value of parameter count contains the number of bytes that were really written.

Compatibility

CONSOLE STANDARD GRAPHICS QUICKWIN GRAPHICS WINDOWS DLL LIB

See Also

SPORT_WRITE_LINE, SPORT_READ_DATA, Communications and Communications Functions in the Microsoft* Platform SDK, Building Applications: Using the Serial I/O Port Routines

Example

USE IFPORT
INTEGER(4) iresult
iresult =  SPORT_WRITE_DATA( 2, 'ATZ'//CHAR(13), 0 )
END