Serial port communication, Computer Engineering

Assignment Help:

The 68HC11F1 has two types of serial ports namely asynchronous (SCI) and synchronous (SPI). The most common form of communication device used in control is the SCI as this provides the user with a variable baud rate, stop bits, start bits, but no parity. The SCI occupies the same pins as the parallel port D. Similar to the parallel ports the control registers are memory mapped i.e.

      Address   Register
      0x002b  Baud rate
       0x002c    SCI control 1 SCCR1
      0x002d  SCI control 2 SCCR2
       0x002e    SCI status SCSR
      0x002f    SCI Communication data register SCDR
 
Before we use the SCI we must first configure the serial channel with the correct protocol, normally most systems use a baud rate of 9600, 1 stop bit and no parity. The first two registers are used to configure these parameters. The next register is used to handle the status of the SCI i.e. is it ready to transmit or have I received data. Finally data is actually transmitted/ received via the data register SCDR. Let us consider an example.


Related Discussions:- Serial port communication

Prints the hundreds digit in two integers , Write an application that prin...

Write an application that prints the hundreds digit  in two integers read from the keyboard. For example if the data values are 1456 and 255 respectably, output should include the

Statistical technique, Ask qa survey was conducted among the residents of p...

Ask qa survey was conducted among the residents of pune city,it suburbs and the pune cantonment area.the following three pie diagrams show their respective preferences for living i

Observed speedup and parallel overhead, Observed Speedup Observed speed...

Observed Speedup Observed speedup of a system which has been parallelized, is defined as:                             Granularity is one of the easiest and most extensi

Explain the significance ipv6 over ipv4, Explain the significance IPV6 over...

Explain the significance IPV6 over IPV4. The maximum size of an Ipv6 datagram is 65575 bytes, with the 0 bytes Ipv6 header. Ipv6 also describe a minimum reassembly buffer size:

Operating system, explain network operating system and design issues?

explain network operating system and design issues?

Explain telnet, Explain Telnet Telnet is a Remote Login.

Explain Telnet Telnet is a Remote Login.

What is meant by a field, What is meant by a field The consecutive nonw...

What is meant by a field The consecutive nonwhite space characters that define a data item collectively define a field. It is possible  to limit the number of such characters b

What functions connect( )& accept( ) call in socket interfac, What function...

What functions connect( ) and accept ( ) call in Socket interfacing? connect() system call: Clients use procedures connect to initiate connection with an exact server. The

In which network configuration all data/information pass, A distributed net...

A distributed network configuration in which all data/information pass through a central computer is (A)  Bus network                            (B) Star network (C)  Rin

Determine the define byte - assembler directives, Determine the Define Byte...

Determine the Define Byte - Assembler directives DB (Define Byte): DB directive defines a byte-type variable (i.e. a variable that occupies one byte of memory space). In a give

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd