diff options
Diffstat (limited to 'protocol/ps2.h')
| -rw-r--r-- | protocol/ps2.h | 65 |
1 files changed, 7 insertions, 58 deletions
diff --git a/protocol/ps2.h b/protocol/ps2.h index 483eea720..acde679cf 100644 --- a/protocol/ps2.h +++ b/protocol/ps2.h | |||
| @@ -39,8 +39,9 @@ POSSIBILITY OF SUCH DAMAGE. | |||
| 39 | #define PS2_H | 39 | #define PS2_H |
| 40 | 40 | ||
| 41 | #include <stdbool.h> | 41 | #include <stdbool.h> |
| 42 | #include <util/delay.h> | 42 | #include "wait.h" |
| 43 | #include <avr/io.h> | 43 | #include "ps2_io.h" |
| 44 | #include "print.h" | ||
| 44 | 45 | ||
| 45 | /* | 46 | /* |
| 46 | * Primitive PS/2 Library for AVR | 47 | * Primitive PS/2 Library for AVR |
| @@ -92,79 +93,27 @@ uint8_t ps2_host_recv(void); | |||
| 92 | void ps2_host_set_led(uint8_t usb_led); | 93 | void ps2_host_set_led(uint8_t usb_led); |
| 93 | 94 | ||
| 94 | 95 | ||
| 95 | /* Check port settings for clock and data line */ | ||
| 96 | #if !(defined(PS2_CLOCK_PORT) && \ | ||
| 97 | defined(PS2_CLOCK_PIN) && \ | ||
| 98 | defined(PS2_CLOCK_DDR) && \ | ||
| 99 | defined(PS2_CLOCK_BIT)) | ||
| 100 | # error "PS/2 clock port setting is required in config.h" | ||
| 101 | #endif | ||
| 102 | |||
| 103 | #if !(defined(PS2_DATA_PORT) && \ | ||
| 104 | defined(PS2_DATA_PIN) && \ | ||
| 105 | defined(PS2_DATA_DDR) && \ | ||
| 106 | defined(PS2_DATA_BIT)) | ||
| 107 | # error "PS/2 data port setting is required in config.h" | ||
| 108 | #endif | ||
| 109 | |||
| 110 | /*-------------------------------------------------------------------- | 96 | /*-------------------------------------------------------------------- |
| 111 | * static functions | 97 | * static functions |
| 112 | *------------------------------------------------------------------*/ | 98 | *------------------------------------------------------------------*/ |
| 113 | static inline void clock_lo(void) | ||
| 114 | { | ||
| 115 | PS2_CLOCK_PORT &= ~(1<<PS2_CLOCK_BIT); | ||
| 116 | PS2_CLOCK_DDR |= (1<<PS2_CLOCK_BIT); | ||
| 117 | } | ||
| 118 | static inline void clock_hi(void) | ||
| 119 | { | ||
| 120 | /* input with pull up */ | ||
| 121 | PS2_CLOCK_DDR &= ~(1<<PS2_CLOCK_BIT); | ||
| 122 | PS2_CLOCK_PORT |= (1<<PS2_CLOCK_BIT); | ||
| 123 | } | ||
| 124 | static inline bool clock_in(void) | ||
| 125 | { | ||
| 126 | PS2_CLOCK_DDR &= ~(1<<PS2_CLOCK_BIT); | ||
| 127 | PS2_CLOCK_PORT |= (1<<PS2_CLOCK_BIT); | ||
| 128 | _delay_us(1); | ||
| 129 | return PS2_CLOCK_PIN&(1<<PS2_CLOCK_BIT); | ||
| 130 | } | ||
| 131 | static inline void data_lo(void) | ||
| 132 | { | ||
| 133 | PS2_DATA_PORT &= ~(1<<PS2_DATA_BIT); | ||
| 134 | PS2_DATA_DDR |= (1<<PS2_DATA_BIT); | ||
| 135 | } | ||
| 136 | static inline void data_hi(void) | ||
| 137 | { | ||
| 138 | /* input with pull up */ | ||
| 139 | PS2_DATA_DDR &= ~(1<<PS2_DATA_BIT); | ||
| 140 | PS2_DATA_PORT |= (1<<PS2_DATA_BIT); | ||
| 141 | } | ||
| 142 | static inline bool data_in(void) | ||
| 143 | { | ||
| 144 | PS2_DATA_DDR &= ~(1<<PS2_DATA_BIT); | ||
| 145 | PS2_DATA_PORT |= (1<<PS2_DATA_BIT); | ||
| 146 | _delay_us(1); | ||
| 147 | return PS2_DATA_PIN&(1<<PS2_DATA_BIT); | ||
| 148 | } | ||
| 149 | |||
| 150 | static inline uint16_t wait_clock_lo(uint16_t us) | 99 | static inline uint16_t wait_clock_lo(uint16_t us) |
| 151 | { | 100 | { |
| 152 | while (clock_in() && us) { asm(""); _delay_us(1); us--; } | 101 | while (clock_in() && us) { asm(""); wait_us(1); us--; } |
| 153 | return us; | 102 | return us; |
| 154 | } | 103 | } |
| 155 | static inline uint16_t wait_clock_hi(uint16_t us) | 104 | static inline uint16_t wait_clock_hi(uint16_t us) |
| 156 | { | 105 | { |
| 157 | while (!clock_in() && us) { asm(""); _delay_us(1); us--; } | 106 | while (!clock_in() && us) { asm(""); wait_us(1); us--; } |
| 158 | return us; | 107 | return us; |
| 159 | } | 108 | } |
| 160 | static inline uint16_t wait_data_lo(uint16_t us) | 109 | static inline uint16_t wait_data_lo(uint16_t us) |
| 161 | { | 110 | { |
| 162 | while (data_in() && us) { asm(""); _delay_us(1); us--; } | 111 | while (data_in() && us) { asm(""); wait_us(1); us--; } |
| 163 | return us; | 112 | return us; |
| 164 | } | 113 | } |
| 165 | static inline uint16_t wait_data_hi(uint16_t us) | 114 | static inline uint16_t wait_data_hi(uint16_t us) |
| 166 | { | 115 | { |
| 167 | while (!data_in() && us) { asm(""); _delay_us(1); us--; } | 116 | while (!data_in() && us) { asm(""); wait_us(1); us--; } |
| 168 | return us; | 117 | return us; |
| 169 | } | 118 | } |
| 170 | 119 | ||
