tmk
hace 11 años
Se han modificado 1 ficheros con 14 adiciones y 5 borrados
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protocol/adb.c
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| static inline void send_byte(uint8_t data); | static inline void send_byte(uint8_t data); | ||||
| static inline bool read_bit(void); | static inline bool read_bit(void); | ||||
| static inline uint8_t read_byte(void); | static inline uint8_t read_byte(void); | ||||
| static inline uint8_t wait_data_lo(uint8_t us); | |||||
| static inline uint8_t wait_data_lo(uint16_t us); | |||||
| static inline uint8_t wait_data_hi(uint8_t us); | static inline uint8_t wait_data_hi(uint8_t us); | ||||
| void adb_host_init(void) | void adb_host_init(void) | ||||
| { | { | ||||
| DDRF |= (1<<1); | |||||
| data_hi(); | data_hi(); | ||||
| #ifdef ADB_PSW_BIT | #ifdef ADB_PSW_BIT | ||||
| psw_hi(); | psw_hi(); | ||||
| attention(); | attention(); | ||||
| send_byte(0x2C); // Addr:Keyboard(0010), Cmd:Talk(11), Register0(00) | send_byte(0x2C); // Addr:Keyboard(0010), Cmd:Talk(11), Register0(00) | ||||
| place_bit0(); // Stopbit(0) | place_bit0(); // Stopbit(0) | ||||
| if (!wait_data_lo(0xFF)) // Tlt/Stop to Start(140-260us) | |||||
| if (!wait_data_lo(500)) { // Tlt/Stop to Start(140-260us) | |||||
| return 0; // No data to send | return 0; // No data to send | ||||
| if (!read_bit()) // Startbit(1) | |||||
| } | |||||
| if (!read_bit()) { // Startbit(1) | |||||
| // Service Request | |||||
| return -2; | return -2; | ||||
| } | |||||
| // ad hoc fix: without block inerrupt read wrong bit occasionally and get keys stuck | // ad hoc fix: without block inerrupt read wrong bit occasionally and get keys stuck | ||||
| cli(); | cli(); | ||||
| data = read_byte(); | data = read_byte(); | ||||
| data = (data<<8) | read_byte(); | data = (data<<8) | read_byte(); | ||||
| uint8_t stop = read_bit(); // Stopbit(0) | |||||
| sei(); | sei(); | ||||
| if (read_bit()) // Stopbit(0) | |||||
| if (stop) { | |||||
| return -3; | return -3; | ||||
| } | |||||
| return data; | return data; | ||||
| } | } | ||||
| return data; | return data; | ||||
| } | } | ||||
| static inline uint8_t wait_data_lo(uint8_t us) | |||||
| static inline uint8_t wait_data_lo(uint16_t us) | |||||
| { | { | ||||
| while (data_in() && us) { | while (data_in() && us) { | ||||
| _delay_us(1); | _delay_us(1); | ||||
| --------- | --------- | ||||
| ADB - The Untold Story: Space Aliens Ate My Mouse | ADB - The Untold Story: Space Aliens Ate My Mouse | ||||
| http://developer.apple.com/legacy/mac/library/#technotes/hw/hw_01.html | http://developer.apple.com/legacy/mac/library/#technotes/hw/hw_01.html | ||||
| ADB Manager | |||||
| http://developer.apple.com/legacy/mac/library/documentation/mac/pdf/Devices/ADB_Manager.pdf | |||||
| Service request(5-17) | |||||
| Apple IIgs Hardware Reference Second Edition [Chapter6 p121] | Apple IIgs Hardware Reference Second Edition [Chapter6 p121] | ||||
| ftp://ftp.apple.asimov.net/pub/apple_II/documentation/Apple%20IIgs%20Hardware%20Reference.pdf | ftp://ftp.apple.asimov.net/pub/apple_II/documentation/Apple%20IIgs%20Hardware%20Reference.pdf | ||||
| ADB Keycode | ADB Keycode |