CONFIG ATEMU - Revision history

Admin: Created page with "= Action = Configures the PS/2 keyboard data and clock pins.
2013-02-07T19:01:03Z

Created page with "= <span class="f_Header">Action</span> = Configures the PS/2 keyboard data and clock pins. <span style="font-family: Arial;"> </span> <span style="font-family: Arial;"..."

New page
= <span class="f_Header">Action</span> =

Configures the PS/2 keyboard data and clock pins.

<span style="font-family: Arial;"> </span>

<span style="font-family: Arial;"> </span>

= <span class="f_Header">Syntax</span> =

<span class="f_Syntax">CONFIG ATEMU</span> = int , DATA = data, CLOCK=clock [,INIT=VALUE]

<span style="font-family: Arial;"> </span>

<span style="font-family: Arial;"> </span>

= <span class="f_Header">Remarks</span> =
<div style="padding: 0px; margin: 0px 0px 0px 4px;">
{| width="609" cellspacing="0" cellpadding="1" border="1" style="border: 2px solid rgb(0, 0, 0); border-spacing: 0px; border-collapse: collapse;"
|- style="vertical-align: top;"
| valign="top" width="15%" style="width: 88px; border: 1px solid rgb(0, 0, 0);" |
Int

| valign="top" width="100%" style="width: 512px; border: 1px solid rgb(0, 0, 0);" |
The interrupt used such as INT0 or INT1.

|- style="vertical-align: top;"
| valign="top" width="15%" style="width: 88px; border: 1px solid rgb(0, 0, 0);" |
DATA

| valign="top" width="100%" style="width: 512px; border: 1px solid rgb(0, 0, 0);" |
The pin that is connected to the DATA line. This must be the same pin as the used interrupt.

|- style="vertical-align: top;"
| valign="top" width="15%" style="width: 88px; border: 1px solid rgb(0, 0, 0);" |
CLOCK

| valign="top" width="100%" style="width: 512px; border: 1px solid rgb(0, 0, 0);" |
The pin that is connected to the CLOCK line.

|- style="vertical-align: top;"
| valign="top" width="15%" style="width: 88px; border: 1px solid rgb(0, 0, 0);" |
INIT

| valign="top" width="100%" style="width: 512px; border: 1px solid rgb(0, 0, 0);" |
An optional value that will identify the keyboard. By default or when omitted this is &HAB83. The code that identifies a keyboard. Some mother boards/BIOS  seems to require the reverse &H83AB. By making it an option you can pass any possible value. The MSB is passed first, the LSB last.

|}
</div>
<span style="font-family: Arial;"> </span>

<span style="font-family: Arial;"> </span>

[[File:Atemu 1.jpg|center|Atemu 1.jpg]]

[[File:Atemu 2.jpg|center|Atemu 2.jpg]]

<span style="font-family: Arial;"> </span>

Old PC’s are equipped with a 5-pin DIN female connector. Newer PC’s have a 6-pin mini DIN female connector.

The male sockets must be used for the connection with the micro.

<span style="font-family: Arial;"> </span>

Besides the DATA and CLOCK you need to connect from the PC to the micro, you need to connect ground. You can use the +5V from the PC to power your microprocessor.

<span style="font-family: Arial;"> </span>

<span style="font-family: Arial;"> </span>

The config statement will setup an ISR that is triggered when the INT pin goes low. This routine you can find in the library.

The ISR will retrieve a byte from the PC and will send the proper commands back to the PC.

<span style="font-family: Arial;"> </span>

<span style="font-family: Arial;"> </span>

The SENDSCANKBD statement allows you to send keyboard commands.

<span style="font-family: Arial;"> </span>

<span style="font-family: Arial;"> </span>

Note that unlike the mouse emulator, the keyboard emulator is also recognized after your PC has booted.

<span style="font-family: Arial;"> </span>

<span style="font-family: Arial;"> </span>

[[File:Notice.jpg|left|Notice.jpg]] The PS2 Keyboard and mouse emulator needs an additional commercial addon library.

<span style="font-family: Arial;"> </span>

<span style="font-family: Arial;"> </span>

= <span class="f_Header">See also</span> =

[[SENDSCANKBD]]

<span style="font-family: Arial;"> </span>

<span style="font-family: Arial;"> </span>

<span style="font-family: Arial;"> </span>

= <span class="f_Header">Example</span> =

<br/><source lang="bascomavr">
'-----------------------------------------------------------------------------------------
'name : ps2_kbdemul.bas
'copyright : (c) 1995-2005, MCS Electronics
'purpose : PS2 AT Keyboard emulator
'micro : 90S2313
'suited for demo : no, ADD ONE NEEDED
'commercial addon needed : yes
'-----------------------------------------------------------------------------------------

$regfile = "2313def.dat" ' specify the used micro
$crystal = 4000000 ' used crystal frequency
$baud = 19200 ' use baud rate
$hwstack = 32 ' default use 32 for the hardware stack
$swstack = 10 ' default use 10 for the SW stack
$framesize = 40 ' default use 40 for the frame space

$lib "mcsbyteint.lbx" ' use optional lib since we use only bytes

'configure PS2 AT pins
Enable Interrupts ' you need to turn on interrupts yourself since an INT is used
Config Atemu = Int1 , Data = Pind.3 , Clock = Pinb.0
' ^------------------------ used interrupt
' ^----------- pin connected to DATA
' ^-- pin connected to clock
'Note that the DATA must be connected to the used interrupt pin

Waitms 500 ' optional delay

'rcall _AT_KBD_INIT
Print "Press t for test, and set focus to the editor window"
Dim Key2 As Byte , Key As Byte
Do
Key2 = Waitkey() ' get key from terminal
Select Case Key2
Case "t" :
Waitms 1500
Sendscankbd Mark ' send a scan code
Case Else
End Select
Loop
Print Hex(key)

Mark: ' send mark
Data 12 , &H3A , &HF0 , &H3A , &H1C , &HF0 , &H1C , &H2D , &HF0 , &H2D , &H42 , &HF0 , &H42
' ^ send 12 bytes
' m a r k
</source><br/>{{Languages}}

[[Category:BASCOM Language Reference]]