uart_csreg Struct Reference

#include <uart.h>

Data Fields
volatile uchar	buffer
volatile uchar	ier
volatile uchar	iir
volatile uchar	lcr
volatile uchar	mcr
volatile uchar	lsr
volatile uchar	msr
volatile uchar	scr

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Detailed Description

Control and status registers for the 16550 UART. This structure is mapped directly to the base address for the CSR.

Definition at line 18 of file uart.h.

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Field Documentation

volatile uchar uart_csreg::buffer

receive buffer (read only) OR transmit hold (write only)

Definition at line 20 of file uart.h.

Referenced by uartIntr().

volatile uchar uart_csreg::ier

interrupt enable

Definition at line 22 of file uart.h.

Referenced by kputc(), uartInit(), and uartStat().

volatile uchar uart_csreg::iir

interrupt ident (read only) OR FIFO control (write only)

Definition at line 23 of file uart.h.

Referenced by uartIntr().

volatile uchar uart_csreg::lcr

line control

Definition at line 25 of file uart.h.

Referenced by uartInit().

volatile uchar uart_csreg::mcr

modem control

Definition at line 26 of file uart.h.

Referenced by uartInit().

volatile uchar uart_csreg::lsr

line status

Definition at line 27 of file uart.h.

Referenced by kputc(), and uartIntr().

volatile uchar uart_csreg::msr

modem status

Definition at line 28 of file uart.h.

volatile uchar uart_csreg::scr

scratch

Definition at line 29 of file uart.h.

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The documentation for this struct was generated from the following file:

• Desktop/xinu_mips-1.0.2.tar/xinu_mips-1.0.2/include/uart.h