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grv2k4
Joined: 25 Dec 2004
Posts: 5
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 25 Dec 2004 19:17 help needed |
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| i am designing an LCD controller as a project, and wanted to know whether parallel port is better for interfacing (with an Intel 89C51) , or is serial port better?[/b]
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eltonjohn
Joined: 22 Feb 2002
Posts: 1558
Helped: 22
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| 25 Dec 2004 19:22 Re: help needed |
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Is not very clear .what you need !.. Do you want to USE a PC to drive a LCD?
But if is a 8051 with AN LCD .. the easiest way is to buy a LCD with a serial interface and use the 8051 UART to send data ..Is very simple
Check the serials LCD at www.sparkfun.com
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hamadeh
Joined: 10 Dec 2004
Posts: 98
Helped: 10
Location: Lebanon
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| 26 Dec 2004 0:46 help needed |
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Serial or Parallel ??? , as eltonjohn said is the PC is involved in this project or not.
In both cases I think that using serial port for communication is the best choise, its easier and the 8051 had a build in UART ...
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grv2k4
Joined: 25 Dec 2004
Posts: 5
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| 27 Dec 2004 19:32 Re: help needed |
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Sorry i wasn't so clear. Actually, i'm a newbie to this field.
Actually, i'm planning of using the PC only as a medium to transfer the messsage to the
microcontroller, which will store the messsge into a RAM or a buffer , and will then send characters to the LCD. Thus, the LCD serves only as a display (o/p)., whilethe PC is only used for sending messages.(i/p) . please comment on my idea, and if there's anything silly with it or sth., do let me know.
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checkmate
Joined: 25 Feb 2004
Posts: 489
Helped: 35
Location: Toilet Seat
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| 27 Dec 2004 20:03 Re: help needed |
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| Well, then why do you think a microcontroller is required in the first place?
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IanP
Joined: 05 Oct 2004
Posts: 6347
Helped: 1505
Location: West Coast
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| 28 Dec 2004 0:17 Re: help needed |
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Because it is just a project, you can connect microcontroller (RS-232 driver IC will be required) to PC via serial port (easy way of sendig characters using free software such as Hyperterminal) and then using any pins of your microcontrollers create second "software" serial port to control the LCD and/or RAM (maybe I2C serial bus?). By doing this you will learn a lot...
Obviously you can take other advices and control LCD from PC directly, however, it will not be your PROJECT any more...
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aamiralikhoja
Joined: 11 Aug 2004
Posts: 88
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| 30 Dec 2004 16:31 Re: help needed |
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why are u using microcontroller parallel port in enough to controll Lcd
there is project done by some thing else goto www.codeproject.com
serach for parallel port or lcd u would find three ur requirement.
Added after 1 hours 53 minutes:
here is the link
http://www.codeproject.com/csharp/cspplcds.asp
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