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- C Compiler for Microchip PIC microcontrollers
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Prototype
char Ps2_Key_Read(char *value, char *special, char *pressed);
Returns Returns 1 if reading of a key from the keyboard was successful, otherwise 0.
Description The function retrieves information about key pressed.
Parameter
value holds the value of the key pressed. For characters, numerals, punctua-
tion marks, and space, value will store the appropriate ASCII value. Routine “recog-
nizes” the function of Shift and Caps Lock, and behaves appropriately.
Parameter
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.
Parameter
pressed is set to 1 if the key is pressed, and 0 if released.
Requires PS/2 keyboard needs to be initialized; see Ps2_Init or Ps2_Config.
Example
// Press Enter to continue:
do {
if (Ps2_Key_Read(&value, &special, &pressed)) {
if ((value == 13) && (special == 1)) break;
}
} while (1);
Ps2_Key_Read