diff options
| -rw-r--r-- | ADB.txt | 43 | ||||
| -rw-r--r-- | adb.c | 19 | ||||
| -rw-r--r-- | adb.h | 1 | ||||
| -rw-r--r-- | adb/README | 2 | ||||
| -rw-r--r-- | adb/matrix.c | 8 |
5 files changed, 60 insertions, 13 deletions
@@ -3,11 +3,14 @@ ADB Protocol Resources --------- +ADB - The Untold Story: Space Aliens Ate My Mouse + http://developer.apple.com/legacy/mac/library/#technotes/hw/hw_01.html Apple IIgs Hardware Reference Second Edition [p80(Chapter6 p121)] ftp://ftp.apple.asimov.net/pub/apple_II/documentation/Apple%20IIgs%20Hardware%20Reference.pdf ADB Keycode http://72.0.193.250/Documentation/macppc/adbkeycodes/ http://m0115.web.fc2.com/m0115.jpg + [Inside Macintosh volume V, pages 191-192] ADB Signaling http://kbdbabel.sourceforge.net/doc/kbd_signaling_pcxt_ps2_adb.pdf ADB Overview & History @@ -61,9 +64,9 @@ Commands 3: mice Registers: - 0: application(keyobard/mice use to store its data.) + 0: application(keyobard uses this to store its data.) 1: application - 2: application + 2: application(keyboard uses this for LEDs and state of modifiers) 3: status and command @@ -111,15 +114,17 @@ Communication keep low for 300us to request. -Keyboard data(register0) - This 16bit data can contains 2 keycodes and 2 released flags. - First keycode is palced in upper nibble. When one keyocode is sent, - lower nibble is 0xFF. +Keyboard Data(Register0) + This 16bit data can contains two keycodes and two released flags. + First keycode is palced in upper byte. When one keyocode is sent, + lower byte is 0xFF. Release flag is 1 when key is released. - 15 14 . . . . . 8 7 6 . . . . . 0 - | |keycode1 | |keycode2 - |released(1) |released(1) + 1514 . . . . . 8 7 6 . . . . . 0 + | | | | | | | | | +-+-+-+-+-+-+- Keycode2 + | | | | | | | | +--------------- Released2(1 when the key is released) + | +-+-+-+-+-+-+----------------- Keycode1 + +------------------------------- Released1(1 when the key is released) Keycodes: Scancode consists of 7bit keycode and 1bit release flag. @@ -131,4 +136,24 @@ Keyboard data(register0) the switch has a special scancode 0x7F7F, so you can also read from Data line. It uses 0xFFFF for release scancode. +Keyboard LEDs & state of keys(Register2) + This register hold current state of three LEDs and nine keys. + The state of LEDs can be changed by sending Listen command. + + 1514 . . . . . . 7 6 5 . 3 2 1 0 + | | | | | | | | | | | | | | | +- LED1(NumLock) + | | | | | | | | | | | | | | +--- LED2(CapsLock) + | | | | | | | | | | | | | +----- LED3(ScrollLock) + | | | | | | | | | | +-+-+------- Reserved + | | | | | | | | | +------------- ScrollLock + | | | | | | | | +--------------- NumLock + | | | | | | | +----------------- Apple/Command + | | | | | | +------------------- Option + | | | | | +--------------------- Shift + | | | | +----------------------- Control + | | | +------------------------- Reset/Power + | | +--------------------------- CapsLock + | +----------------------------- Delete + +------------------------------- Reserved + END_OF_ADB @@ -42,9 +42,9 @@ uint16_t adb_host_kbd_recv(void) { uint16_t data = 0; attention(); - send_byte(0x2C); // Addr:2, Cmd:talk(11), Reg:0(00) - place_bit0(); // Stopbit - if (!wait_data_lo(0xFF)) // Stop to Start(140-260us) + send_byte(0x2C); // Addr:Keyboard(0010), Cmd:Talk(11), Register0(00) + place_bit0(); // Stopbit(0) + if (!wait_data_lo(0xFF)) // Tlt/Stop to Start(140-260us) return 0; // No data to send if (!read_bit()) // Startbit(1) return -2; @@ -55,6 +55,19 @@ uint16_t adb_host_kbd_recv(void) return data; } +// send state of LEDs +void adb_host_kbd_led(uint8_t led) +{ + attention(); + send_byte(0x2A); // Addr:Keyboard(0010), Cmd:Listen(10), Register2(10) + place_bit0(); // Stopbit(0) + _delay_us(200); // Tlt/Stop to Start + place_bit1(); // Startbit(1) + send_byte(0); // send upper byte (not used) + send_byte(led&0x07); // send lower byte (bit2: ScrollLock, bit1: CapsLock, bit0: NumLock) + place_bit0(); // Stopbit(0); +} + static inline void data_lo() { @@ -14,5 +14,6 @@ void adb_host_init(void); bool adb_host_psw(void); uint16_t adb_host_kbd_recv(void); +void adb_host_kbd_led(uint8_t led); #endif diff --git a/adb/README b/adb/README index edd118d411..d6c9ec9aa4 100644 --- a/adb/README +++ b/adb/README @@ -1,8 +1,10 @@ ADB to USB keyboard converter ============================= +http://geekhack.org/showwiki.php?title=Island:14290 This firmware converts ADB keyboard protocol to USB. + Build ----- 0. Connect ADB keyboard to Teensy by 3 lines(Vcc, GND, Data). diff --git a/adb/matrix.c b/adb/matrix.c index ca8858d0ba..550506ec4d 100644 --- a/adb/matrix.c +++ b/adb/matrix.c @@ -9,6 +9,7 @@ #include "util.h" #include "debug.h" #include "adb.h" +#include "usb_keyboard.h" #include "matrix_skel.h" @@ -71,8 +72,13 @@ uint8_t matrix_scan(void) uint16_t codes; uint8_t key0, key1; - _matrix_is_modified = false; + static uint8_t prev_led = 0; + if (prev_led != usb_keyboard_leds) { + adb_host_kbd_led(~usb_keyboard_leds); + prev_led = usb_keyboard_leds; + } + _matrix_is_modified = false; codes = adb_host_kbd_recv(); key0 = codes>>8; key1 = codes&0xFF; |