^{The example shows the connection of a device from the dsPIC30F family to a standard PS/2 keyboard. It is important to note that all pins of the PS/2 keyboard connected to the dsPIC30F device are connected to the power supply by the pull-up resistors. The realization is carried out by using the mikroBasic compiler for dsPIC30F microcontrollers.}

program ps2_test

dim
 keydata, special, down  as word

main:
  ADPCFG=$FFFF
  keydata = 0
  special = 0
  down    = 0

  Ps2_Config(PORTC, 14, 13)
  Uart1_Init(9600)
  
  Uart1_Write_Text("You can type now!") ' Ready
  while TRUE
    if Ps2_Key_Read(keydata, special, down) <> 0 then
      if ((down<>0) and (keydata = 16)) <> 0 then
        Uart1_Write_Char(0x08)
      else
        if ((down<>0) and (keydata = 13)) <> 0 then
          ' Enter
          Uart1_Write_Char(13)
          Uart1_Write_Char(10)
        else
          if ((down<>0) and (special=0) and (keydata<>0)) <> 0 then
            Uart1_Write_Char(keydata)
          end if
        end if
      end if
    end if
    Delay_ms(1) ' debounce
  wend
end.