ioconfig.h File Reference

I/O port definitions. More...

#include <avr/io.h>

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Defines
#define	PS2PORT   PORTD
	PS2 port.
#define	PS2PIN   PIND
	PS2 input.
#define	PS2DDR   DDRD
	PS2 data direction.
#define	PS2CLK   2
	PS2CLK is pin 2.
#define	PS2DAT   4
	PS2DAT is pin 4.
#define	PS2_RXBUF_LEN   16
	PS2 receive buffer size.
#define	SENSEPORT   PORTD
	SID sense port.
#define	SENSEDDR   DDRD
	SID sense data direction.
#define	SENSEPIN   PIND
	SID sense input.
#define	POTSENSE   3
	INT1 attached to PORTD.3,.
#define	POTPORT   PORTB
	POT-controlling outputs X and Y.
#define	POTDDR   DDRB
	POT outputs data direction.
#define	POTPIN   PINB
	POT outputs input ;).
#define	POTY   1
	Y-line, also OC1A.
#define	POTX   2
	X-line, also OC1B, also right button in joystick mode.
#define	JOYPORT   PORTC
	Joystick pins.
#define	JOYDDR   DDRC
	Joystick pins data direction (out = switch closed to gnd).
#define	JOYPIN   PINC
	Joystick in.
#define	JOYUP   0
	Joystick UP switch.
#define	JOYDOWN   2
	Joystick DOWN switch.
#define	JOYLEFT   3
	Joystick LEFT switch.
#define	JOYRIGHT   4
	Joystick RIGHT switch.
#define	JOYFIRE   1
	Joystick FIRE switch.
Functions
void	io_init ()

---

Detailed Description

I/O port definitions.

---

Define Documentation

#define JOYDDR   DDRC

Joystick pins data direction (out = switch closed to gnd).

#define JOYDOWN   2

Joystick DOWN switch.

#define JOYFIRE   1

Joystick FIRE switch.

#define JOYLEFT   3

Joystick LEFT switch.

#define JOYPIN   PINC

Joystick in.

#define JOYPORT   PORTC

Joystick pins.

#define JOYRIGHT   4

Joystick RIGHT switch.

#define JOYUP   0

Joystick UP switch.

#define POTDDR   DDRB

POT outputs data direction.

#define POTPIN   PINB

POT outputs input ;).

#define POTPORT   PORTB

POT-controlling outputs X and Y.

#define POTSENSE   3

INT1 attached to PORTD.3,.

#define POTX   2

X-line, also OC1B, also right button in joystick mode.

#define POTY   1

Y-line, also OC1A.

#define PS2_RXBUF_LEN   16

PS2 receive buffer size.

#define PS2CLK   2

PS2CLK is pin 2.

#define PS2DAT   4

PS2DAT is pin 4.

#define PS2DDR   DDRD

PS2 data direction.

#define PS2PIN   PIND

PS2 input.

#define PS2PORT   PORTD

PS2 port.

#define SENSEDDR   DDRD

SID sense data direction.

#define SENSEPIN   PIND

SID sense input.

#define SENSEPORT   PORTD

SID sense port.

---

Function Documentation

void io_init

(

)

               {
    // configure PS2 lines as inputs by default, internal pullups off
    PS2PORT &= ~(_BV(PS2CLK)|_BV(PS2DAT));  
    PS2DDR &= ~(_BV(PS2CLK)|_BV(PS2DAT));    
}