* <http://geekhack.org/index.php?topic=14290.msg1068919#msg1068919>
* <http://geekhack.org/index.php?topic=14290.msg1070139#msg1070139>
*/
+uint16_t adb_host_kbd_recv(uint8_t addr)
+{
+ return adb_host_talk(addr, ADB_REG_0);
+}
+
+#ifdef ADB_MOUSE_ENABLE
+void adb_mouse_init(void) {
+ return;
+}
-// ADB Bit Cells
-//
-// bit cell time: 70-130us
-// low part of bit0: 60-70% of bit cell
-// low part of bit1: 30-40% of bit cell
-//
-// bit cell time 70us 130us
-// --------------------------------------------
-// low part of bit0 42-49 78-91
-// high part of bit0 21-28 39-52
-// low part of bit1 21-28 39-52
-// high part of bit1 42-49 78-91
-//
-//
-// bit0:
-// 70us bit cell:
-// ____________~~~~~~
-// 42-49 21-28
-//
-// 130us bit cell:
-// ____________~~~~~~
-// 78-91 39-52
-//
-// bit1:
-// 70us bit cell:
-// ______~~~~~~~~~~~~
-// 21-28 42-49
-//
-// 130us bit cell:
-// ______~~~~~~~~~~~~
-// 39-52 78-91
-//
-// [from Apple IIgs Hardware Reference Second Edition]
-
-uint16_t adb_host_kbd_recv(void)
+uint16_t adb_host_mouse_recv(void)
+{
+ return adb_host_talk(ADB_ADDR_MOUSE, ADB_REG_0);
+}
+#endif
+
+uint16_t adb_host_talk(uint8_t addr, uint8_t reg)
{
uint16_t data = 0;
cli();
attention();
- send_byte(0x2C); // Addr:Keyboard(0010), Cmd:Talk(11), Register0(00)
+ send_byte((addr<<4) | (ADB_CMD_TALK<<2) | reg);
place_bit0(); // Stopbit(0)
if (!wait_data_hi(500)) { // Service Request(310us Adjustable Keyboard): just ignored
sei();
sei();
return 0; // No data to send
}
-
+
uint8_t n = 17; // start bit + 16 data bits
do {
uint8_t lo = (uint8_t) wait_data_hi(130);
if (!lo)
goto error;
-
+
uint8_t hi = (uint8_t) wait_data_lo(lo);
if (!hi)
goto error;
-
+
hi = lo - hi;
lo = 130 - lo;
-
+
data <<= 1;
if (lo < hi) {
data |= 1;
return -n;
}
-void adb_host_listen(uint8_t cmd, uint8_t data_h, uint8_t data_l)
+void adb_host_listen(uint8_t addr, uint8_t reg, uint8_t data_h, uint8_t data_l)
{
cli();
attention();
- send_byte(cmd);
+ send_byte((addr<<4) | (ADB_CMD_LISTEN<<2) | reg);
place_bit0(); // Stopbit(0)
_delay_us(200); // Tlt/Stop to Start
place_bit1(); // Startbit(1)
- send_byte(data_h);
+ send_byte(data_h);
send_byte(data_l);
place_bit0(); // Stopbit(0);
sei();
}
// send state of LEDs
-void adb_host_kbd_led(uint8_t led)
+void adb_host_kbd_led(uint8_t addr, uint8_t led)
{
- // Addr:Keyboard(0010), Cmd:Listen(10), Register2(10)
- // send upper byte (not used)
- // send lower byte (bit2: ScrollLock, bit1: CapsLock, bit0:
- adb_host_listen(0x2A,0,led&0x07);
+ // Listen Register2
+ // upper byte: not used
+ // lower byte: bit2=ScrollLock, bit1=CapsLock, bit0=NumLock
+ adb_host_listen(addr, 2, 0, led & 0x07);
}
bits commands
------------------------------------------------------
- - - - - 0 0 0 0 Send Request(reset all devices)
+ - - - - 0 0 0 0 Send Reset(reset all devices)
A A A A 0 0 0 1 Flush(reset a device)
- - - - 0 0 1 0 Reserved
- - - - 0 0 1 1 Reserved
A A A A 1 1 R R Talk(read from a device)
The command to read keycodes from keyboard is 0x2C which
- consist of keyboard address 2 and Talk against register 0.
+ consist of keyboard address 2 and Talk against register 0.
Address:
2: keyboard
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)
| +----------------------------- Delete
+------------------------------- Reserved
+Address, Handler ID and bits(Register3)
+ 1514131211 . . 8 7 . . . . . . 0
+ | | | | | | | | | | | | | | | |
+ | | | | | | | | +-+-+-+-+-+-+-+- Handler ID
+ | | | | +-+-+-+----------------- Address
+ | | | +------------------------- 0
+ | | +--------------------------- Service request enable(1 = enabled)
+ | +----------------------------- Exceptional event(alwyas 1 if not used)
+ +------------------------------- 0
+
+ADB Bit Cells
+ bit cell time: 70-130us
+ low part of bit0: 60-70% of bit cell
+ low part of bit1: 30-40% of bit cell
+
+ bit cell time 70us 130us
+ --------------------------------------------
+ low part of bit0 42-49 78-91
+ high part of bit0 21-28 39-52
+ low part of bit1 21-28 39-52
+ high part of bit1 42-49 78-91
+
+
+ bit0:
+ 70us bit cell:
+ ____________~~~~~~
+ 42-49 21-28
+
+ 130us bit cell:
+ ____________~~~~~~
+ 78-91 39-52
+
+ bit1:
+ 70us bit cell:
+ ______~~~~~~~~~~~~
+ 21-28 42-49
+
+ 130us bit cell:
+ ______~~~~~~~~~~~~
+ 39-52 78-91
+
+ [from Apple IIgs Hardware Reference Second Edition]
+
+Keyboard Handle ID
+ Apple Standard Keyboard M0116: 0x01
+ Apple Extended Keyboard M0115: 0x02
+ Apple Extended Keyboard II M3501: 0x02
+ Apple Adjustable Keybaord: 0x10
+
+ http://lxr.free-electrons.com/source/drivers/macintosh/adbhid.c?v=4.4#L802
+
END_OF_ADB
*/