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M0110: Fixed timing of signal handling.

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example_keyboards
tmk 13 years ago
parent 38d61ee1b1
commit 0a4fa89548
2 changed files with 87 additions and 26 deletions
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98
m0110.c
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@ -66,7 +66,7 @@ Signaling
---------
CLOCK is always from KEYBOARD. DATA are sent with MSB first.
1) IDLE: both line is high.
1) IDLE: both lines are high.
CLOCK ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
DATA ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@ -79,7 +79,7 @@ CLOCK is always from KEYBOARD. DATA are sent with MSB first.
3) HOST->KEYBOARD: HOST asserts bit on falling edge.
CLOCK ~~~~~~~~~~~~|__|~~~|__|~~~|__|~~~|__|~~~|__|~~~|__|~~~|__|~~~|__|~~~~~~~~~~~
DATA ~~~~~~|_____X777777X666666X555555X444444X333333X222222X111111X000000X~~~~~~~
<----> 840us(request to send by host) <-> 80us(hold DATA)
<----> 840us(request to send by host) <---> 80us(hold DATA)
<--> 180us(clock low)
<---> 220us(clock high)
@ -98,11 +98,18 @@ COMMAND:
KEY EVENT:
bit 7 key state(0:press 1:release)
bit 6-1 scan code
bit 6-1 scan code(see below)
bit 0 always 1
To get scan code, use ((bits&(1<<7)) | ((bits&7F))>>1).
To get scan code use this: ((bits&(1<<7)) | ((bits&0x7F))>>1).
Note: On the M0110A, the numpad keys and the arrow keys are preceded by 0x79.
Moreover, the numpad keys =, /, * and + are preceded by shift-down 0x71 on press and shift-up 0xF1 on release.
So, the data transferred by nupmad 5 is "79 2F" whereas for numpad + it's "71 79 0D".
SCAN CODE:
m0111_recv_key() function returns follwing scan codes instead of raw key events.
Scan codes are 1 byte long and bit7 is set when key is released.
M0110
,---------------------------------------------------------.
| `| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| -| =|Backs|
@ -127,29 +134,74 @@ SCAN CODE:
| 3A| 37| 31 | 34| 3A|
`------------------------------------------------'
M0110A
,---------------------------------------------------------. ,---------------.
| `| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| -| =|Bcksp| |Clr| =| /| *|
|---------------------------------------------------------| |---------------|
|Tab | Q| W| E| R| T| Y| U| I| O| P| [| ]| | | 7| 8| 9| -|
|-----------------------------------------------------' | |---------------|
|CapsLo| A| S| D| F| G| H| J| K| L| ;| '|Return| | 4| 5| 6| +|
|---------------------------------------------------------| |---------------|
|Shift | Z| X| C| V| B| N| M| ,| ,| /|Shft|Up | | 1| 2| 3| |
|---------------------------------------------------------' |-----------|Ent|
|Optio|Mac | Space | \|Lft|Rgt|Dn | | 0| .| |
`---------------------------------------------------------' `---------------'
,---------------------------------------------------------. ,---------------.
| 32| 12| 13| 14| 15| 17| 16| 1A| 1C| 19| 1D| 1B| 18| 33| | 47| 68| 6D| 62|
|---------------------------------------------------------| |---------------|
| 30| 0C| 0D| 0E| 0F| 10| 11| 20| 22| 1F| 23| 21| 1E| | | 59| 5B| 5C| 4E|
|-----------------------------------------------------' | |---------------|
| 39| 00| 01| 02| 03| 05| 04| 26| 28| 25| 29| 27| 24| | 56| 57| 58| 66|
|---------------------------------------------------------| |---------------|
| 38| 06| 07| 08| 09| 0B| 2D| 2E| 2B| 2F| 2C| 38| 4D| | 53| 54| 55| |
|---------------------------------------------------------' |-----------| 4C|
| 3A| 37| 31 | 2A| 46| 42| 48| | 52| 41| |
`---------------------------------------------------------' `---------------'
References
----------
Technical Info for 128K/512K and Plus
ftp://ftp.apple.asimov.net/pub/apple_II/documentation/macintosh/Mac%20Hardware%20Info%20-%20Mac%20128K.pdf
ftp://ftp.apple.asimov.net/pub/apple_II/documentation/macintosh/Mac%20Hardware%20Info%20-%20Mac%20Plus.pdf
Protocol:
Page 20 of Tech Info for 128K/512K
http://www.mac.linux-m68k.org/devel/plushw.php
Connector:
Page 20 of Tech Info for 128K/512K
http://www.kbdbabel.org/conn/kbd_connector_macplus.png
Signaling:
http://www.kbdbabel.org/signaling/kbd_signaling_mac.png
http://typematic.blog.shinobi.jp/Entry/14/
Scan Codes:
Page 22 of Tech Info for 128K/512K
Page 07 of Tech Info for Plus
http://m0115.web.fc2.com/m0110.jpg
http://m0115.web.fc2.com/m0110a.jpg
*/
#define WAIT(stat, us, err) do { \
#define WAIT_US(stat, us, err) do { \
if (!wait_##stat(us)) { \
m0110_error = err; \
goto ERROR; \
} \
} while (0)
#define WAIT_MS(stat, ms, err) do { \
uint16_t _ms = ms; \
while (_ms) { \
if (wait_##stat(1000)) { \
break; \
} \
_ms--; \
} \
if (_ms == 0) { \
m0110_error = err; \
goto ERROR; \
} \
} while (0)
uint8_t m0110_error = 0;
@ -158,9 +210,13 @@ void m0110_init(void)
{
uint8_t data;
idle();
_delay_ms(255);
_delay_ms(1000);
m0110_send(M0110_MODLE);
// Model Number
// M0110 : 0x09 00001001 : model number 4 (100)
// M0110A: 0x0B 00001011 : model number 5 (101)
// M0110 & M0120: ???
m0110_send(M0110_MODEL);
data = m0110_recv();
print("m0110_init model: "); phex(data); print("\n");
@ -174,24 +230,22 @@ uint8_t m0110_send(uint8_t data)
m0110_error = 0;
request();
WAIT(clock_lo, 1000, 0);
WAIT_MS(clock_lo, 250, 1); // keyboard may block long time
for (uint8_t bit = 0x80; bit; bit >>= 1) {
WAIT(clock_lo, 250, 3);
_delay_us(15);
WAIT_US(clock_lo, 250, 3);
if (data&bit) {
data_hi();
} else {
data_lo();
}
WAIT(clock_hi, 200, 4);
WAIT_US(clock_hi, 200, 4);
}
_delay_us(100); // hold last bit for 80us
idle();
return 1;
ERROR:
if (m0110_error) {
print("m0110_send err: "); phex(m0110_error); print("\n");
}
print("m0110_send err: "); phex(m0110_error); print("\n");
_delay_ms(500);
idle();
return 0;
}
@ -201,24 +255,20 @@ uint8_t m0110_recv(void)
uint8_t data = 0;
m0110_error = 0;
WAIT(clock_lo, -1, 0); // need 250ms? insted 0xffff(16bit max)us
WAIT_MS(clock_lo, 250, 1); // keyboard may block long time
for (uint8_t i = 0; i < 8; i++) {
data <<= 1;
WAIT(clock_lo, 200, 2);
WAIT(clock_hi, 200, 3);
WAIT_US(clock_lo, 200, 2);
WAIT_US(clock_hi, 200, 3);
if (data_in()) {
data |= 1;
}
}
idle();
if (data != M0110_NULL) {
print("m0110_recv data: "); phex(data); print("\n");
}
return data;
ERROR:
if (m0110_error) {
print("m0110_recv err: "); phex(m0110_error); print("\n");
}
print("m0110_recv err: "); phex(m0110_error); print("\n");
_delay_ms(500);
idle();
return 0xFF;
}
@ -231,7 +281,7 @@ uint8_t m0110_recv_key(void)
if (key == 0xFF || key == M0110_NULL)
return M0110_NULL;
else
return ((key&(1<<7)) | ((key&0x7F)>>1));
return M0110_RAW2SCAN(key);
}

15
m0110.h
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@ -55,11 +55,22 @@ POSSIBILITY OF SUCH DAMAGE.
#endif
#define M0110_INQUIRY 0x10
#define M0110_INSTNAT 0x14
#define M0110_MODLE 0x16
#define M0110_INSTANT 0x14
#define M0110_MODEL 0x16
#define M0110_TEST 0x36
#define M0110_PAD 0x79
#define M0110_NULL 0x7B
#define M0110_TEST_ACK 0x7D
#define M0110_TEST_NAK 0x77
/* scan code offset for keypad and arrow keys */
#define M0110_KEYPAD_OFFSET 0x40
#define M0110_ARROW_OFFSET 0x60
/* convert key event raw response into scan code */
#define M0110_RAW2SCAN(key) ((key&(1<<7)) | ((key&0x7F)>>1))
extern uint8_t m0110_error;

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