avrora.sim.mcu
Class USART.ControlRegisterA

java.lang.Object
  avrora.sim.mcu.USART.ControlRegisterA

All Implemented Interfaces:

ActiveRegister

Enclosing class:

USART

protected class USART.ControlRegisterA

extends java.lang.Object

implements ActiveRegister

UCSRnA (ControlRegisterA) is one of three control/status registers for the USART. The high three bits are actually interrupt flag bits.

Constructor Summary

USART.ControlRegisterA()

Method Summary

byte	read() The read() method reads the 8-bit value of the IO register as a byte.
boolean	readBit(int bit) The readBit() method reads a single bit from the IO register.
void	write(byte val) The write() method writes an 8-bit value to the IO register as a byte.
void	writeBit(int bit, boolean val) The writeBit() method writes a single bit value into the IO register at the specified bit offset.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

USART.ControlRegisterA

public USART.ControlRegisterA()

Method Detail

write

public void write(byte val)

Description copied from interface: ActiveRegister

The write() method writes an 8-bit value to the IO register as a byte. For special IO registers, this may cause some action like device activity, masking/unmasking of interrupts, etc.

Specified by:

write in interface ActiveRegister

Parameters:

val - the value to write

writeBit

public void writeBit(int bit,
                     boolean val)

Description copied from interface: ActiveRegister

The writeBit() method writes a single bit value into the IO register at the specified bit offset.

Specified by:

writeBit in interface ActiveRegister

Parameters:

bit - the number of the bit to write

val - the value of the bit to write

read

public byte read()

Description copied from interface: ActiveRegister

The read() method reads the 8-bit value of the IO register as a byte. For special IO registers, this may cause some action like device activity, or the actual value of the register may need to be fetched or computed.

Specified by:

read in interface ActiveRegister

Returns:

the value of the register as a byte

readBit

public boolean readBit(int bit)

Description copied from interface: ActiveRegister

The readBit() method reads a single bit from the IO register.

Specified by:

readBit in interface ActiveRegister

Parameters:

bit - the number of the bit to read

Returns:

the value of the bit as a boolean