Post by thread:PC Keyboard Protocol

part 0 2169 bytes <META content=text/html;charset=iso-8859-1 http-equiv=Content-Type> <META content='"MSHTML 4.71.1712.3"' name=GENERATOR> </HEAD> <BODY bgColor=#ffffff> <DIV><FONT color=#000000 face=Arial size=2>Dear Sirs,</FONT></DIV> <DIV><FONT color=#000000 face=Arial size=2></FONT> </DIV> <DIV><FONT color=#000000 face=Arial size=2>I need to interface a PC XT/AT keyboard with a PIC16C63A.</FONT></DIV> <DIV><FONT color=#000000 face=Arial size=2>I know that the pins of the connector of the keyboard are:</FONT></DIV> <DIV><FONT color=#000000 face=Arial size=2>+5VDC, GND , /RESET , DATA ,CLOCK and it works with serial synchronous.</FONT></DIV> <DIV><FONT color=#000000 face=Arial size=2>I would like to know to make the treatment of the protocol sent by the keyboard.</FONT> </DIV> <DIV><FONT color=#000000 face=Arial size=2></FONT><FONT face=Arial size=2>Is it unidirectional or bi-directional ?</FONT></DIV> <DIV><FONT face=Arial size=2>Do the data come in ASCII or HEX format ?</FONT> </DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT color=#000000 face=Arial size=2>Thank you for your help.</FONT></DIV> <DIV><FONT color=#000000 face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>Sincerely yours,</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2><A href="spam_OUTmarcoaurelioTakeThisOuTppa.com.br">.....marcoaurelioKILLspam@spam@ppa.com.br</A></FONT></DIV>> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV> </DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT color=#000000 face=Arial size=2></FONT> </DIV></BODY></HTML> </x-html>

Marco, See my web page :- http://ourworld.compuserve.com/homepages/steve_lawther/ucindex.htm for some info on PC AT keyboards, some PIC code, and links to other info. Steve Lawther ______________________________ Reply Separator _________________________________ Subject: PC Keyboard Protocol Author: "marco" [SMTP:marcoaurelioKILLspamPPA.COM.BR] at Exchange-UK Date: 01/03/99 18:32 Dear Sirs, Ê I need to interface a PC XT/AT keyboard with a PIC16C63A. I know that the pins of the connector of the keyboard are: +5VDC, GND , /RESET , DATA ,CLOCK and it works with serial synchronous. I would like to know to make the treatment of the protocol sent by the keyboard.Ê Is it unidirectional or bi-directional ? Do the data come in ASCII or HEX format ?Ê Ê Thank you for your help. Ê Sincerely yours, Ê .....marcoaurelioKILLspam.....ppa.com.br <EraseMEmarcoaureliospam_OUTTakeThisOuTppa.com.br> Ê Ê Ê Ê

On Mon, 1 Mar 1999, marco wrote: > Dear Sirs, > > I need to interface a PC XT/AT keyboard with a PIC16C63A. > I know that the pins of the connector of the keyboard are: > +5VDC, GND , /RESET , DATA ,CLOCK and it works with serial synchronous. > I would like to know to make the treatment of the protocol sent by the keyboar d. > Is it unidirectional or bi-directional ? In theory, bi-directional. You can trick the computer into thinking that the data is being from the keyboard, assuming that you follow the clk. and data formats as outlined in the Keyb. Protocol. Atleast, that's how we're doing it. > Do the data come in ASCII or HEX format ? > Hex format... if you want to you can have a lookup table to convert it. I think one of the apps. on the microchip web page outlines this..or was it on the phylips microcontroller page..ahh..try 'em both. Good Luck.. -PRam

> > This is a multi-part message in MIME format. > > ------=_NextPart_000_0006_01BE63F8.A8D62BC0 > Content-Type: text/plain; > charset="iso-8859-1" > Content-Transfer-Encoding: quoted-printable > > Dear Sirs, > > I need to interface a PC XT/AT keyboard with a PIC16C63A. > I know that the pins of the connector of the keyboard are: > +5VDC, GND , /RESET , DATA ,CLOCK and it works with serial synchronous. > I would like to know to make the treatment of the protocol sent by the = > keyboard. Search you favorite search engine for the PC Keyboard FAQ. Answers all you questions and more. > Is it unidirectional or bi-directional ? Undirectional for the XT, BiDirectional for the AT. > Do the data come in ASCII or HEX format ? Scancodes actually. You'll have to find a way to map them into something usable. BAJ