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git.gir.st - tmk_keyboard.git/blob - protocol/ps2_io_avr.c
2 #include <util/delay.h>
4 /* Check port settings for clock and data line */
5 #if !(defined(PS2_CLOCK_PORT) && \
6 defined(PS2_CLOCK_PIN) && \
7 defined(PS2_CLOCK_DDR) && \
8 defined(PS2_CLOCK_BIT))
9 # error "PS/2 clock port setting is required in config.h"
12 #if !(defined(PS2_DATA_PORT) && \
13 defined(PS2_DATA_PIN) && \
14 defined(PS2_DATA_DDR) && \
15 defined(PS2_DATA_BIT))
16 # error "PS/2 data port setting is required in config.h"
29 PS2_CLOCK_PORT
&= ~(1<<PS2_CLOCK_BIT
);
30 PS2_CLOCK_DDR
|= (1<<PS2_CLOCK_BIT
);
35 /* input with pull up */
36 PS2_CLOCK_DDR
&= ~(1<<PS2_CLOCK_BIT
);
37 PS2_CLOCK_PORT
|= (1<<PS2_CLOCK_BIT
);
42 PS2_CLOCK_DDR
&= ~(1<<PS2_CLOCK_BIT
);
43 PS2_CLOCK_PORT
|= (1<<PS2_CLOCK_BIT
);
45 return PS2_CLOCK_PIN
&(1<<PS2_CLOCK_BIT
);
57 PS2_DATA_PORT
&= ~(1<<PS2_DATA_BIT
);
58 PS2_DATA_DDR
|= (1<<PS2_DATA_BIT
);
63 /* input with pull up */
64 PS2_DATA_DDR
&= ~(1<<PS2_DATA_BIT
);
65 PS2_DATA_PORT
|= (1<<PS2_DATA_BIT
);
70 PS2_DATA_DDR
&= ~(1<<PS2_DATA_BIT
);
71 PS2_DATA_PORT
|= (1<<PS2_DATA_BIT
);
73 return PS2_DATA_PIN
&(1<<PS2_DATA_BIT
);