#define PS2_H
#include <stdbool.h>
-#include <util/delay.h>
-#include <avr/io.h>
+#include "wait.h"
+#include "ps2_io.h"
+#include "print.h"
/*
* Primitive PS/2 Library for AVR
void ps2_host_set_led(uint8_t usb_led);
-/* Check port settings for clock and data line */
-#if !(defined(PS2_CLOCK_PORT) && \
- defined(PS2_CLOCK_PIN) && \
- defined(PS2_CLOCK_DDR) && \
- defined(PS2_CLOCK_BIT))
-# error "PS/2 clock port setting is required in config.h"
-#endif
-
-#if !(defined(PS2_DATA_PORT) && \
- defined(PS2_DATA_PIN) && \
- defined(PS2_DATA_DDR) && \
- defined(PS2_DATA_BIT))
-# error "PS/2 data port setting is required in config.h"
-#endif
-
/*--------------------------------------------------------------------
* static functions
*------------------------------------------------------------------*/
-static inline void clock_lo(void)
-{
- PS2_CLOCK_PORT &= ~(1<<PS2_CLOCK_BIT);
- PS2_CLOCK_DDR |= (1<<PS2_CLOCK_BIT);
-}
-static inline void clock_hi(void)
-{
- /* input with pull up */
- PS2_CLOCK_DDR &= ~(1<<PS2_CLOCK_BIT);
- PS2_CLOCK_PORT |= (1<<PS2_CLOCK_BIT);
-}
-static inline bool clock_in(void)
-{
- PS2_CLOCK_DDR &= ~(1<<PS2_CLOCK_BIT);
- PS2_CLOCK_PORT |= (1<<PS2_CLOCK_BIT);
- _delay_us(1);
- return PS2_CLOCK_PIN&(1<<PS2_CLOCK_BIT);
-}
-static inline void data_lo(void)
-{
- PS2_DATA_PORT &= ~(1<<PS2_DATA_BIT);
- PS2_DATA_DDR |= (1<<PS2_DATA_BIT);
-}
-static inline void data_hi(void)
-{
- /* input with pull up */
- PS2_DATA_DDR &= ~(1<<PS2_DATA_BIT);
- PS2_DATA_PORT |= (1<<PS2_DATA_BIT);
-}
-static inline bool data_in(void)
-{
- PS2_DATA_DDR &= ~(1<<PS2_DATA_BIT);
- PS2_DATA_PORT |= (1<<PS2_DATA_BIT);
- _delay_us(1);
- return PS2_DATA_PIN&(1<<PS2_DATA_BIT);
-}
-
static inline uint16_t wait_clock_lo(uint16_t us)
{
- while (clock_in() && us) { asm(""); _delay_us(1); us--; }
+ while (clock_in() && us) { asm(""); wait_us(1); us--; }
return us;
}
static inline uint16_t wait_clock_hi(uint16_t us)
{
- while (!clock_in() && us) { asm(""); _delay_us(1); us--; }
+ while (!clock_in() && us) { asm(""); wait_us(1); us--; }
return us;
}
static inline uint16_t wait_data_lo(uint16_t us)
{
- while (data_in() && us) { asm(""); _delay_us(1); us--; }
+ while (data_in() && us) { asm(""); wait_us(1); us--; }
return us;
}
static inline uint16_t wait_data_hi(uint16_t us)
{
- while (!data_in() && us) { asm(""); _delay_us(1); us--; }
+ while (!data_in() && us) { asm(""); wait_us(1); us--; }
return us;
}