CONFIG PS2EMU

Action

Configures the PS2 mouse data and clock pins.

 

 

Syntax

CONFIG PS2EMU= int , DATA = data, CLOCK=clock

 

 

Remarks

Int	The interrupt used such as INT0 or INT1.
DATA	The pin that is connected to the DATA line. This must be the same pin as the used interrupt.
CLOCK	The pin that is connected to the CLOCK line.

 

 

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.

 

 

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.

 

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.

 

The SENDSCAN and PS2MOUSEXY statements allow you to send mouse commands.

 

Note that the mouse emulator is only recognized after you have booted your PC. Mouse devices can not be plugged into your PC once it has booted. Inserting a mouse or mouse device when the PC is already booted, may damage your PC.

 

 

See also

SENDSCAN, PS2MOUSEXY

 

 

Example

'-----------------------------------------------------------------------------------------
'name : ps2_emul.bas
'copyright : (c) 1995-2005, MCS Electronics
'purpose : PS2 Mouse emulator
'micro : 90S2313
'suited for demo : NO, commercial addon 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 pins
Config Ps2emu = 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
 
Enable Interrupts ' you need to turn on interrupts yourself since an INT is used
 
Print "Press u,d,l,r,b, or t"
Dim Key As Byte
Do
 Key = Waitkey() ' get key from terminal
 Select Case Key
 Case "u" : Ps2mousexy 0 , 10 , 0 ' up
 Case "d" : Ps2mousexy 0 , -10 , 0 ' down
 Case "l" : Ps2mousexy -10 , 0 , 0 ' left
 Case "r" : Ps2mousexy 10 , 0 , 0 ' right
 Case "b" : Ps2mousexy 0 , 0 , 1 ' left button pressed
 Ps2mousexy 0 , 0 , 0 ' left button released
 Case "t" : Sendscan Mouseup ' send a scan code
 Case Else
 End Select
Loop
 
 
Mouseup:
Data 3 , &H08 , &H00 , &H01 ' mouse up by 1 unit

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