UART_PUT_BYTE callback function (uart.h)

Writes a data byte to the UART device.

Syntax

UART_PUT_BYTE UartPutByte;

UART_STATUS UartPutByte(
  [_Inout_] PCPPORT Port,
            UCHAR Byte,
            BOOLEAN BusyWait
)
{...}

Parameters

[_Inout_] Port

A pointer to a _CPPORT structure that contains the address of the port object that describes the UART hardware.

Byte

The byte to write to the UART hardware.

BusyWait

A flag to control whether this routine will busy-wait (spin) for the UART hardware to be ready to transmit.

Return value

Returns UART_STATUS-type value that indicates success or failure of the operation.

Remarks

Register your implementation of this callback function by setting the appropriate member of UART_HARDWARE_DRIVER.

Requirements

Requirement	Value
Minimum supported client	Windows 10, version 1803
Header	uart.h

See also

UART_HARDWARE_DRIVER

_CPPORT

UART_STATUS

uart.h