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

Discussion., Functionality first and then Security?

Functionality first and then Security?

Create perl scripts, Create Perl scripts as required below: a) Create a ...

Create Perl scripts as required below: a) Create a script named select_by_attribute.pl that accepts the name of a LibML documentand the name of a particular attribute from the c

What do you mean by numbering and addressing, What do you mean by numbering...

What do you mean by numbering and addressing? Numbering and Addressing: In data networks and telephone, the end equipments are more frequently single units than multiple dev

Explain program level of parallel processing, Program Level This is nor...

Program Level This is normally the liability of OS (operating system) that runs processes simultaneously. Different programs are generally independent of each other. So paralle

Grapgh, representation of the adjacency matrix and adjacency list

representation of the adjacency matrix and adjacency list

Reading every record , You have a file having sporting goods that are sold ...

You have a file having sporting goods that are sold online. Every item record contains the item id, item name, item description, item category, item price, and the units in stock.

Why are interrupt masks provided in any processor, Why are interrupt masks ...

Why are interrupt masks provided in any processor? Interrupt mask enable the higher priority devices comes first and there for lower priority devices comes last. The interrupt

State the term- combinational circuit, In a pure combinational circuit is ...

In a pure combinational circuit is it necessary to mention all the inputs in sensitivity disk? if yes, why? Yes in a pure combinational circuit is it essential to mention all

Episodes - artificial intelligence , Episodes - artificial intelligence: ...

Episodes - artificial intelligence: If an agent's current choice of action not based on its past reactions, then the environment is known as episodic. In the non-episodic envi

Differentiate between static and dynamic memory, Differentiate between stat...

Differentiate between static and dynamic memory? The static RAM is simpler to use and has shorter read and write cycles. One of the main applications of static RAM is in execut

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