avrora.sim.mcu
Class USART

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

public class USART

extends AtmelInternalDevice

The USART class implements a Universal Synchronous Asynchronous Receiver/Transmitter, which is a serial device on the Atmel microcontrollers. The ATMega128, for example, has two USARTs, USART0 and USART1. This implementation of the USART does not yet support "Synchronous Mode" or "Multi-processor Communication Mode". Also, this implementation does not search for parity errors or framing errors. Presumably, these errors will not occur.

Nested Class Summary

protected class	USART.ControlRegisterA UCSRnA (ControlRegisterA) is one of three control/status registers for the USART.
protected class	USART.ControlRegisterB UCSRnB (ControlRegisterB) is one of three control/status registers for the USART.
protected class	USART.ControlRegisterC UCSRnC (ControlRegisterC) is one of three control/status registers for the USART.
protected class	USART.DataRegister The DataRegister class represents a Transmit Data Buffer Register for a USART.
static class	USART.Frame A USARTFrame is a representation of the serial frames being passed between the USART and a connected device.
protected class	USART.Receiver
protected class	USART.SerialPrinter A simple implementation of the USARTDevice interface that connects to a USART on the processor.
protected class	USART.Transmitter
protected class	USART.UBRRnHReg The high byte of the Baud Rate register.
protected class	USART.UBRRnLReg The low byte of the Baud Rate register.
static interface	USART.USARTDevice The USARTDevice interface describes USARTs and other serial devices which can be connected to the USART.

Field Summary

USART.USARTDevice

connectedDevice

Fields inherited from class avrora.sim.mcu.AtmelInternalDevice

devicePrinter, interpreter, mainClock, microcontroller, name, simulator

Constructor Summary

USART(java.lang.String subID, AtmelMicrocontroller m)

Method Summary

void	connect(USART.USARTDevice d)
void	receiveFrame(USART.Frame frame)
void	startReceive() Initiate a receive between the UART and the connected device.
USART.Frame	transmitFrame()

Methods inherited from class avrora.sim.mcu.AtmelInternalDevice

getClock, getIORegs, installIOReg, read16, write16

Methods inherited from class java.lang.Object

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

Field Detail

connectedDevice

public USART.USARTDevice connectedDevice

Constructor Detail

USART

public USART(java.lang.String subID,
             AtmelMicrocontroller m)

Method Detail

transmitFrame

public USART.Frame transmitFrame()

receiveFrame

public void receiveFrame(USART.Frame frame)

connect

public void connect(USART.USARTDevice d)

startReceive

public void startReceive()

Initiate a receive between the UART and the connected device.