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adb_usb: autodetect ISO keyboards and swap codes

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This commit is contained in:
tmk 2016-05-19 16:26:01 +09:00
parent d702fe7504
commit 49f44a2aed
4 changed files with 156 additions and 13 deletions
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72
converter/adb_usb/matrix.c
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@ -39,6 +39,7 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
#endif
static bool is_iso_layout = false;
static bool is_modified = false;
static report_mouse_t mouse_report = {};
@ -72,6 +73,21 @@ void matrix_init(void)
adb_host_init();
// wait for keyboard to boot up and receive command
_delay_ms(1000);
// Determine ISO keyboard by handle id
// http://lxr.free-electrons.com/source/drivers/macintosh/adbhid.c?v=4.4#L815
uint16_t handle_id = adb_host_talk(ADB_ADDR_KEYBOARD, 3);
switch (handle_id) {
case 0x04: case 0x05: case 0x07: case 0x09: case 0x0D:
case 0x11: case 0x14: case 0x19: case 0x1D: case 0xC1:
case 0xC4: case 0xC7:
is_iso_layout = true;
break;
default:
is_iso_layout = false;
break;
}
// Enable keyboard left/right modifier distinction
// Addr:Keyboard(0010), Cmd:Listen(10), Register3(11)
// upper byte: reserved bits 0000, device address 0010
@ -92,6 +108,9 @@ void matrix_init(void)
_delay_ms(500);
DDRD |= (1<<6); PORTD &= ~(1<<6);
uint16_t handle_id2 = adb_host_talk(ADB_ADDR_KEYBOARD, 3);
xprintf("handle_id: %02X -> %02X\n", handle_id&0xff, handle_id2&0xff);
return;
}
@ -106,10 +125,10 @@ void adb_mouse_task(void)
{
uint16_t codes;
int16_t x, y;
static int8_t mouseacc;
static int8_t mouseacc;
_delay_ms(12); // delay for preventing overload of poor ADB keyboard controller
codes = adb_host_mouse_recv();
// If nothing received reset mouse acceleration, and quit.
// If nothing received reset mouse acceleration, and quit.
if (!codes) {
mouseacc = 1;
return;
@ -119,12 +138,12 @@ void adb_mouse_task(void)
mouse_report.buttons |= MOUSE_BTN1;
if (codes & (1 << 15))
mouse_report.buttons &= ~MOUSE_BTN1;
// lower seven bits are movement, as signed int_7.
// low byte is X-axis, high byte is Y.
// lower seven bits are movement, as signed int_7.
// low byte is X-axis, high byte is Y.
y = (codes>>8 & 0x3F);
x = (codes>>0 & 0x3F);
// bit seven and fifteen is negative
// usb does not use int_8, but int_7 (measuring distance) with sign-bit.
// usb does not use int_8, but int_7 (measuring distance) with sign-bit.
if (codes & (1 << 6))
x = (x-0x40);
if (codes & (1 << 14))
@ -132,7 +151,7 @@ void adb_mouse_task(void)
// Accelerate mouse. (They weren't meant to be used on screens larger than 320x200).
x *= mouseacc;
y *= mouseacc;
// Cap our two bytes per axis to one byte.
// Cap our two bytes per axis to one byte.
// Easier with a MIN-function, but since -MAX(-a,-b) = MIN(a,b)...
// I.E. MIN(MAX(x,-127),127) = -MAX(-MAX(x, -127), -127) = MIN(-MIN(-x,127),127)
mouse_report.x = -MAX(-MAX(x, -127), -127);
@ -145,7 +164,7 @@ void adb_mouse_task(void)
print_decs(mouse_report.x); print(" ");
print_decs(mouse_report.y); print("]\n");
}
// Send result by usb.
// Send result by usb.
host_mouse_send(&mouse_report);
// increase acceleration of mouse
mouseacc += ( mouseacc < ADB_MOUSE_MAXACC ? 1 : 0 );
@ -192,6 +211,45 @@ uint8_t matrix_scan(void)
xprintf("adb_host_kbd_recv: ERROR(%d)\n", codes);
return key1;
} else {
/* Swap codes for ISO keyboard
*
* ANSI
* ,----------- ----------.
* | *a| 1| 2 =|Backspa|
* |----------- ----------|
* |Tab | Q| | ]| *c|
* |----------- ----------|
* |CapsLo| A| '|Return |
* |----------- ----------|
* |Shift | Shift |
* `----------- ----------'
*
* ISO
* ,----------- ----------.
* | *a| 1| 2 =|Backspa|
* |----------- ----------|
* |Tab | Q| | ]|Retur|
* |----------- -----` |
* |CapsLo| A| '| *c| |
* |----------- ----------|
* |Shif| *b| Shift |
* `----------- ----------'
*
* ADB scan code USB usage
* ------------- ---------
* Key ANSI ISO ANSI ISO
* ---------------------------------------------
* *a 0x32 0x0A 0x35 0x35
* *b ---- 0x32 ---- 0x64
* *c 0x2A 0x2A 0x31 0x31(or 0x32)
*/
if (is_iso_layout) {
if (key0 == 0x32) {
key0 = 0x0A;
} else if (key0 == 0x0A) {
key0 = 0x32;
}
}
register_key(key0);
if (key1 != 0xFF) // key1 is 0xFF when no second key.
extra_key = key1<<8 | 0xFF; // process in a separate call