Initializes the MCU for work with the PS/2 keyboard.

None.

Nothing.

External dependencies of the library from the top of the page must be defined before using this function.

var PS2_Data_Input            : sbit at GPIO_PIN43_bit;
var PS2_Clock_Input           : sbit at GPIO_PIN26_bit;
var PS2_Clock_Output          : sbit at GPIO_PIN26_bit;
...
Ps2_Config();                                       // Init PS/2 Keyboard

None.

The function retrieves information on key pressed.

• value: holds the value of the key pressed. For characters, numerals, punctuation marks, and space value will store the appropriate ASCII code. Routine “recognizes” the function of Shift and Caps Lock, and behaves appropriately. For special function keys see Special Function Keys Table.
• special: is a flag for special function keys (F1, Enter, Esc, etc). If key pressed is one of these, special will be set to 1, otherwise 0.
• pressed: is set to 1 if the key is pressed, and 0 if it is released.

• 1 if reading of a key from the keyboard was successful
• 0 if no key was pressed

PS/2 keyboard needs to be initialized. See Ps2_Config routine.

var value, special, pressed : word;
...
// Press Enter to continue:
repeat {
  if (Ps2_Key_Read(value, special, pressed)) then 
    if ((value = 13) and (special = 1)) then break;
until (0=1);

None.