// uart.h

UART_HARDWARE_WRITE_UCHAR UartHardwareWriteUchar;

VOID UartHardwareWriteUchar(
  PUCHAR Address,
  UCHAR Value
)
{...}
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Windows Driver Kit DDI reference (nc-uart-uart_hardware_write_uchar)

UART_HARDWARE_WRITE_UCHAR callback function

Description

Writes a byte to the port specified by address.

Parameters

`Address`

A pointer to a variable that contains the port or register address.

`Value`

Specifies a byte to be written to the port or register.

Prototype

//Declaration

UART_HARDWARE_WRITE_UCHAR UartHardwareWriteUchar;

// Definition

VOID UartHardwareWriteUchar
(
    PUCHAR Address
    UCHAR Value
)
{...}

Remarks

Register your implementation of this callback function by setting the WritePort8 or WriteRegister8 member of the _UART_HARDWARE_ACCESS structure.

UART_HARDWARE_WRITE_UCHAR - NtDoc