diff options
Diffstat (limited to 'tmk_core/protocol/ibm4704.h')
| -rw-r--r-- | tmk_core/protocol/ibm4704.h | 113 |
1 files changed, 54 insertions, 59 deletions
diff --git a/tmk_core/protocol/ibm4704.h b/tmk_core/protocol/ibm4704.h index 618cce6be0..cc2418ee68 100644 --- a/tmk_core/protocol/ibm4704.h +++ b/tmk_core/protocol/ibm4704.h @@ -4,105 +4,100 @@ Copyright 2014 Jun WAKO <wakojun@gmail.com> #ifndef IBM4704_H #define IBM4704_H -#define IBM4704_ERR_NONE 0 -#define IBM4704_ERR_PARITY 0x70 +#define IBM4704_ERR_NONE 0 +#define IBM4704_ERR_PARITY 0x70 - -void ibm4704_init(void); +void ibm4704_init(void); uint8_t ibm4704_send(uint8_t data); uint8_t ibm4704_recv_response(void); uint8_t ibm4704_recv(void); - /* Check pin configuration */ -#if !(defined(IBM4704_CLOCK_PORT) && \ - defined(IBM4704_CLOCK_PIN) && \ - defined(IBM4704_CLOCK_DDR) && \ - defined(IBM4704_CLOCK_BIT)) -# error "ibm4704 clock pin configuration is required in config.h" +#if !(defined(IBM4704_CLOCK_PORT) && defined(IBM4704_CLOCK_PIN) && defined(IBM4704_CLOCK_DDR) && defined(IBM4704_CLOCK_BIT)) +# error "ibm4704 clock pin configuration is required in config.h" #endif -#if !(defined(IBM4704_DATA_PORT) && \ - defined(IBM4704_DATA_PIN) && \ - defined(IBM4704_DATA_DDR) && \ - defined(IBM4704_DATA_BIT)) -# error "ibm4704 data pin configuration is required in config.h" +#if !(defined(IBM4704_DATA_PORT) && defined(IBM4704_DATA_PIN) && defined(IBM4704_DATA_DDR) && defined(IBM4704_DATA_BIT)) +# error "ibm4704 data pin configuration is required in config.h" #endif - /*-------------------------------------------------------------------- * static functions *------------------------------------------------------------------*/ -static inline void clock_lo(void) -{ - IBM4704_CLOCK_PORT &= ~(1<<IBM4704_CLOCK_BIT); - IBM4704_CLOCK_DDR |= (1<<IBM4704_CLOCK_BIT); +static inline void clock_lo(void) { + IBM4704_CLOCK_PORT &= ~(1 << IBM4704_CLOCK_BIT); + IBM4704_CLOCK_DDR |= (1 << IBM4704_CLOCK_BIT); } -static inline void clock_hi(void) -{ +static inline void clock_hi(void) { /* input with pull up */ - IBM4704_CLOCK_DDR &= ~(1<<IBM4704_CLOCK_BIT); - IBM4704_CLOCK_PORT |= (1<<IBM4704_CLOCK_BIT); + IBM4704_CLOCK_DDR &= ~(1 << IBM4704_CLOCK_BIT); + IBM4704_CLOCK_PORT |= (1 << IBM4704_CLOCK_BIT); } -static inline bool clock_in(void) -{ - IBM4704_CLOCK_DDR &= ~(1<<IBM4704_CLOCK_BIT); - IBM4704_CLOCK_PORT |= (1<<IBM4704_CLOCK_BIT); +static inline bool clock_in(void) { + IBM4704_CLOCK_DDR &= ~(1 << IBM4704_CLOCK_BIT); + IBM4704_CLOCK_PORT |= (1 << IBM4704_CLOCK_BIT); _delay_us(1); - return IBM4704_CLOCK_PIN&(1<<IBM4704_CLOCK_BIT); + return IBM4704_CLOCK_PIN & (1 << IBM4704_CLOCK_BIT); } -static inline void data_lo(void) -{ - IBM4704_DATA_PORT &= ~(1<<IBM4704_DATA_BIT); - IBM4704_DATA_DDR |= (1<<IBM4704_DATA_BIT); +static inline void data_lo(void) { + IBM4704_DATA_PORT &= ~(1 << IBM4704_DATA_BIT); + IBM4704_DATA_DDR |= (1 << IBM4704_DATA_BIT); } -static inline void data_hi(void) -{ +static inline void data_hi(void) { /* input with pull up */ - IBM4704_DATA_DDR &= ~(1<<IBM4704_DATA_BIT); - IBM4704_DATA_PORT |= (1<<IBM4704_DATA_BIT); + IBM4704_DATA_DDR &= ~(1 << IBM4704_DATA_BIT); + IBM4704_DATA_PORT |= (1 << IBM4704_DATA_BIT); } -static inline bool data_in(void) -{ - IBM4704_DATA_DDR &= ~(1<<IBM4704_DATA_BIT); - IBM4704_DATA_PORT |= (1<<IBM4704_DATA_BIT); +static inline bool data_in(void) { + IBM4704_DATA_DDR &= ~(1 << IBM4704_DATA_BIT); + IBM4704_DATA_PORT |= (1 << IBM4704_DATA_BIT); _delay_us(1); - return IBM4704_DATA_PIN&(1<<IBM4704_DATA_BIT); + return IBM4704_DATA_PIN & (1 << IBM4704_DATA_BIT); } -static inline uint16_t wait_clock_lo(uint16_t us) -{ - while (clock_in() && us) { asm(""); _delay_us(1); us--; } +static inline uint16_t wait_clock_lo(uint16_t us) { + while (clock_in() && us) { + asm(""); + _delay_us(1); + us--; + } return us; } -static inline uint16_t wait_clock_hi(uint16_t us) -{ - while (!clock_in() && us) { asm(""); _delay_us(1); us--; } +static inline uint16_t wait_clock_hi(uint16_t us) { + while (!clock_in() && us) { + asm(""); + _delay_us(1); + us--; + } return us; } -static inline uint16_t wait_data_lo(uint16_t us) -{ - while (data_in() && us) { asm(""); _delay_us(1); us--; } +static inline uint16_t wait_data_lo(uint16_t us) { + while (data_in() && us) { + asm(""); + _delay_us(1); + us--; + } return us; } -static inline uint16_t wait_data_hi(uint16_t us) -{ - while (!data_in() && us) { asm(""); _delay_us(1); us--; } +static inline uint16_t wait_data_hi(uint16_t us) { + while (!data_in() && us) { + asm(""); + _delay_us(1); + us--; + } return us; } /* idle state that device can send */ -static inline void idle(void) -{ +static inline void idle(void) { clock_hi(); data_hi(); } -/* inhibit device to send +/* inhibit device to send * keyboard checks Data line on start bit(Data:hi) and it stops sending if Data line is low. */ -static inline void inhibit(void) -{ +static inline void inhibit(void) { clock_hi(); data_lo(); } |