I2c chip(PCF8574) interface to PC by using PIC18F4550

Isit possible to interface the PCF8574 to the PC by using PIC18F4550
through the build in USB function? Since i would like to build the USB by
using PIC18F4550 and interface to the PC. Is there any good application by
using PCF8574 i2c chip?

On Thursday, in article
     <KMidnTJuM53yIOfbnZ2dnUVZ_r2onZ2d@giganews.com>
     stany_seong@yahoo.com "stanywong" wrote:

>Isit possible to interface the PCF8574 to the PC by using PIC18F4550
>through the build in USB function?

Probably.

> Since i would like to build the USB by using PIC18F4550 and interface
>to the PC.

Why?

> Is there any good application by using PCF8574 i2c chip?

Flash a LED, or read a switch, or read a switch to turn the LED On or Off.

No doubt there are spare pins on the PIC to do that anyway.

So why PCF8574?

So why connect to PC (except to load code into PIC or debug)?

Perhaps you should think of an application and then a way to solve
the application, rather than have the devices and make an application.

To connect an 8 bit input/output port to a PC can be done a lot simpler
if there was a need.

What do you need to do?

Other than what sounds like either a school project or 'I have found these
devices what can I build with them'.

-- 
Paul Carpenter          | paul@pcserviceselectronics.co.uk
<http://www.pcserviceselectronics.co.uk/>    PC Services
<http://www.gnuh8.org.uk/>              GNU H8 & mailing list info
<http://www.badweb.org.uk/>             For those web sites you hate

Here is a great project that should help you no end.

http://www.piccoder.co.uk/content/view/42/26/

Marra wrote:
> 
> Here is a great project that should help you no end.
> 
>      http://www.piccoder.co.uk/content/view/42/26/

Totally incomprehensible.  See my sig. below:

-- 
 If you want to post a followup via groups.google.com, ensure 
 you quote enough for the article to make sense. Google is only
 an interface to Usenet; it's not Usenet itself. Don't assume
 your readers can, or ever will, see any previous articles.
More details at: <http://cfaj.freeshell.org/google/>



-- 
Posted via a free Usenet account from http://www.teranews.com

CBFalconer wrote:
> Marra wrote:
> 
>>Here is a great project that should help you no end.
>>
>>     http://www.piccoder.co.uk/content/view/42/26/
> 
> 
> Totally incomprehensible.  See my sig. below:
> 
Thanks Marra,

I totally understood what you are saying.

Keep up the good work.

donald