f5f48c2a24
- Bug fix: Macro RAW2SCAN doesn't work and converted into static inline function. - Add Exceptional handling for M0110A arrow keys and calc keys. - Fix keymap.
438 lines
14 KiB
C
438 lines
14 KiB
C
/*
|
|
Copyright 2011 Jun WAKO <wakojun@gmail.com>
|
|
|
|
This software is licensed with a Modified BSD License.
|
|
All of this is supposed to be Free Software, Open Source, DFSG-free,
|
|
GPL-compatible, and OK to use in both free and proprietary applications.
|
|
Additions and corrections to this file are welcome.
|
|
|
|
|
|
Redistribution and use in source and binary forms, with or without
|
|
modification, are permitted provided that the following conditions are met:
|
|
|
|
* Redistributions of source code must retain the above copyright
|
|
notice, this list of conditions and the following disclaimer.
|
|
|
|
* Redistributions in binary form must reproduce the above copyright
|
|
notice, this list of conditions and the following disclaimer in
|
|
the documentation and/or other materials provided with the
|
|
distribution.
|
|
|
|
* Neither the name of the copyright holders nor the names of
|
|
contributors may be used to endorse or promote products derived
|
|
from this software without specific prior written permission.
|
|
|
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
|
|
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
/* M0110A Support was contributed by skagon@github */
|
|
|
|
#include <stdbool.h>
|
|
#include <avr/io.h>
|
|
#include <avr/interrupt.h>
|
|
#include <util/delay.h>
|
|
#include "m0110.h"
|
|
#include "debug.h"
|
|
|
|
|
|
static inline uint8_t raw2scan(uint8_t raw);
|
|
static inline uint8_t inquiry(void);
|
|
static inline uint8_t instant(void);
|
|
static inline void clock_lo(void);
|
|
static inline void clock_hi(void);
|
|
static inline bool clock_in(void);
|
|
static inline void data_lo(void);
|
|
static inline void data_hi(void);
|
|
static inline bool data_in(void);
|
|
static inline uint16_t wait_clock_lo(uint16_t us);
|
|
static inline uint16_t wait_clock_hi(uint16_t us);
|
|
static inline uint16_t wait_data_lo(uint16_t us);
|
|
static inline uint16_t wait_data_hi(uint16_t us);
|
|
static inline void idle(void);
|
|
static inline void request(void);
|
|
|
|
|
|
#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;
|
|
|
|
|
|
void m0110_init(void)
|
|
{
|
|
uint8_t data;
|
|
idle();
|
|
_delay_ms(1000);
|
|
|
|
// 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");
|
|
|
|
m0110_send(M0110_TEST);
|
|
data = m0110_recv();
|
|
print("m0110_init test: "); phex(data); print("\n");
|
|
}
|
|
|
|
uint8_t m0110_send(uint8_t data)
|
|
{
|
|
m0110_error = 0;
|
|
|
|
request();
|
|
WAIT_MS(clock_lo, 250, 1); // keyboard may block long time
|
|
for (uint8_t bit = 0x80; bit; bit >>= 1) {
|
|
WAIT_US(clock_lo, 250, 3);
|
|
if (data&bit) {
|
|
data_hi();
|
|
} else {
|
|
data_lo();
|
|
}
|
|
WAIT_US(clock_hi, 200, 4);
|
|
}
|
|
_delay_us(100); // hold last bit for 80us
|
|
idle();
|
|
return 1;
|
|
ERROR:
|
|
print("m0110_send err: "); phex(m0110_error); print("\n");
|
|
_delay_ms(500);
|
|
idle();
|
|
return 0;
|
|
}
|
|
|
|
uint8_t m0110_recv(void)
|
|
{
|
|
uint8_t data = 0;
|
|
m0110_error = 0;
|
|
|
|
WAIT_MS(clock_lo, 250, 1); // keyboard may block long time
|
|
for (uint8_t i = 0; i < 8; i++) {
|
|
data <<= 1;
|
|
WAIT_US(clock_lo, 200, 2);
|
|
WAIT_US(clock_hi, 200, 3);
|
|
if (data_in()) {
|
|
data |= 1;
|
|
}
|
|
}
|
|
idle();
|
|
return data;
|
|
ERROR:
|
|
print("m0110_recv err: "); phex(m0110_error); print("\n");
|
|
_delay_ms(500);
|
|
idle();
|
|
return 0xFF;
|
|
}
|
|
|
|
uint8_t m0110_recv_key(void)
|
|
{
|
|
static uint8_t keybuf = 0x00;
|
|
uint8_t key, key2, key3;
|
|
|
|
if (keybuf) {
|
|
key = keybuf;
|
|
keybuf = 0x00;
|
|
return key;
|
|
}
|
|
key = instant(); // Use INSTANT for better response. Should be INQUIRY ?
|
|
switch (key & 0x7F) {
|
|
case M0110_KEYPAD:
|
|
// Pad/Arrow keys
|
|
return (raw2scan(instant()) | M0110_KEYPAD_OFFSET);
|
|
break;
|
|
case M0110_SHIFT:
|
|
key2 = instant();
|
|
if (key2 == M0110_KEYPAD) {
|
|
key3 = instant();
|
|
switch (key3 & 0x7F) {
|
|
case M0110_ARROW_UP:
|
|
case M0110_ARROW_DOWN:
|
|
case M0110_ARROW_LEFT:
|
|
case M0110_ARROW_RIGHT:
|
|
// Calc keys
|
|
return (raw2scan(key3) | M0110_CALC_OFFSET);
|
|
default:
|
|
// Shift + Pad/Arrow keys
|
|
keybuf = raw2scan(key3);
|
|
return (raw2scan(key) | M0110_KEYPAD_OFFSET);
|
|
}
|
|
} else {
|
|
// Shift + other keys
|
|
keybuf = raw2scan(key2);
|
|
return raw2scan(key);
|
|
}
|
|
break;
|
|
default:
|
|
// other keys
|
|
return raw2scan(key);
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
static inline uint8_t raw2scan(uint8_t raw) {
|
|
return (raw == M0110_NULL) ? M0110_NULL : (
|
|
(raw == M0110_ERROR) ? M0110_ERROR : (
|
|
((raw&0x80) | ((raw&0x7F)>>1))
|
|
)
|
|
);
|
|
}
|
|
|
|
static inline uint8_t inquiry(void)
|
|
{
|
|
m0110_send(M0110_INQUIRY);
|
|
return m0110_recv();
|
|
}
|
|
|
|
static inline uint8_t instant(void)
|
|
{
|
|
m0110_send(M0110_INSTANT);
|
|
//return m0110_recv();
|
|
uint8_t data = m0110_recv();
|
|
if (data != 0x7B) {
|
|
print("data: "); phex(data); print("\n");
|
|
}
|
|
return data;
|
|
}
|
|
|
|
static inline void clock_lo()
|
|
{
|
|
M0110_CLOCK_PORT &= ~(1<<M0110_CLOCK_BIT);
|
|
M0110_CLOCK_DDR |= (1<<M0110_CLOCK_BIT);
|
|
}
|
|
static inline void clock_hi()
|
|
{
|
|
/* input with pull up */
|
|
M0110_CLOCK_DDR &= ~(1<<M0110_CLOCK_BIT);
|
|
M0110_CLOCK_PORT |= (1<<M0110_CLOCK_BIT);
|
|
}
|
|
static inline bool clock_in()
|
|
{
|
|
M0110_CLOCK_DDR &= ~(1<<M0110_CLOCK_BIT);
|
|
M0110_CLOCK_PORT |= (1<<M0110_CLOCK_BIT);
|
|
_delay_us(1);
|
|
return M0110_CLOCK_PIN&(1<<M0110_CLOCK_BIT);
|
|
}
|
|
static inline void data_lo()
|
|
{
|
|
M0110_DATA_PORT &= ~(1<<M0110_DATA_BIT);
|
|
M0110_DATA_DDR |= (1<<M0110_DATA_BIT);
|
|
}
|
|
static inline void data_hi()
|
|
{
|
|
/* input with pull up */
|
|
M0110_DATA_DDR &= ~(1<<M0110_DATA_BIT);
|
|
M0110_DATA_PORT |= (1<<M0110_DATA_BIT);
|
|
}
|
|
static inline bool data_in()
|
|
{
|
|
M0110_DATA_DDR &= ~(1<<M0110_DATA_BIT);
|
|
M0110_DATA_PORT |= (1<<M0110_DATA_BIT);
|
|
_delay_us(1);
|
|
return M0110_DATA_PIN&(1<<M0110_DATA_BIT);
|
|
}
|
|
|
|
static inline uint16_t wait_clock_lo(uint16_t us)
|
|
{
|
|
while (clock_in() && us) { asm(""); _delay_us(1); us--; }
|
|
return us;
|
|
}
|
|
static inline uint16_t wait_clock_hi(uint16_t us)
|
|
{
|
|
while (!clock_in() && us) { asm(""); _delay_us(1); us--; }
|
|
return us;
|
|
}
|
|
static inline uint16_t wait_data_lo(uint16_t us)
|
|
{
|
|
while (data_in() && us) { asm(""); _delay_us(1); us--; }
|
|
return us;
|
|
}
|
|
static inline uint16_t wait_data_hi(uint16_t us)
|
|
{
|
|
while (!data_in() && us) { asm(""); _delay_us(1); us--; }
|
|
return us;
|
|
}
|
|
|
|
static inline void idle(void)
|
|
{
|
|
clock_hi();
|
|
data_hi();
|
|
}
|
|
|
|
static inline void request(void)
|
|
{
|
|
clock_hi();
|
|
data_lo();
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
Primitive M0110 Library for AVR
|
|
==============================
|
|
|
|
|
|
Signaling
|
|
---------
|
|
CLOCK is always from KEYBOARD. DATA are sent with MSB first.
|
|
|
|
1) IDLE: both lines are high.
|
|
CLOCK ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
DATA ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
2) KEYBOARD->HOST: HOST reads bit on rising edge.
|
|
CLOCK ~~~~~~~~~~~~|__|~~~|__|~~~|__|~~~|__|~~~|__|~~~|__|~~~|__|~~~|__|~~~~~~~~~~~
|
|
DATA ~~~~~~~~~~~~X777777X666666X555555X444444X333333X222222X111111X000000X~~~~~~~
|
|
<--> 160us(clock low)
|
|
<---> 180us(clock high)
|
|
|
|
3) HOST->KEYBOARD: HOST asserts bit on falling edge.
|
|
CLOCK ~~~~~~~~~~~~|__|~~~|__|~~~|__|~~~|__|~~~|__|~~~|__|~~~|__|~~~|__|~~~~~~~~~~~
|
|
DATA ~~~~~~|_____X777777X666666X555555X444444X333333X222222X111111X000000X~~~~~~~
|
|
<----> 840us(request to send by host) <---> 80us(hold DATA)
|
|
<--> 180us(clock low)
|
|
<---> 220us(clock high)
|
|
|
|
|
|
Protocol
|
|
--------
|
|
COMMAND:
|
|
Inquiry 0x10 get key event
|
|
Instant 0x12 get key event
|
|
Model 0x14 get model number(M0110 responds with 0x09)
|
|
bit 7 1 if another device connected(used when keypad exists?)
|
|
bit4-6 next device model number
|
|
bit1-3 keyboard model number
|
|
bit 0 always 1
|
|
Test 0x16 test(ACK:0x7D/NAK:0x77)
|
|
|
|
KEY EVENT:
|
|
bit 7 key state(0:press 1:release)
|
|
bit 6-1 scan code(see below)
|
|
bit 0 always 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".
|
|
|
|
ARROW KEYS:
|
|
Arrow keys and Pad+,*,/,=(Calc keys) share same byte sequence and its preceding byte
|
|
0x71 and 0xF1 means press and release event of SHIFT. These cause very confusing situation.
|
|
It is difficult or impossible to tell Calc key from Arrow key with SHIFT in some cases.
|
|
|
|
Raw key events:
|
|
press release
|
|
---------------- ----------------
|
|
Left: 0x79, 0x0D 0x79, 0x8D
|
|
Right: 0x79, 0x05 0x79, 0x85
|
|
Up: 0x79, 0x1B 0x79, 0x9B
|
|
Down: 0x79, 0x11 0x79, 0x91
|
|
Pad+: 0x71, 0x79, 0x0D 0xF1, 0x79, 0x8D
|
|
Pad*: 0x71, 0x79, 0x05 0xF1, 0x79, 0x85
|
|
Pad/: 0x71, 0x79, 0x1B 0xF1, 0x79, 0x9B
|
|
Pad=: 0x71, 0x79, 0x11 0xF1, 0x79, 0x91
|
|
|
|
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|
|
|
|---------------------------------------------------------|
|
|
|Tab | Q| W| E| R| T| Y| U| I| O| P| [| ]| \|
|
|
|---------------------------------------------------------|
|
|
|CapsLo| A| S| D| F| G| H| J| K| L| ;| '|Return|
|
|
|---------------------------------------------------------|
|
|
|Shift | Z| X| C| V| B| N| M| ,| ,| /| |
|
|
`---------------------------------------------------------'
|
|
|Opt|Mac | Space |Enter|Opt|
|
|
`------------------------------------------------'
|
|
,---------------------------------------------------------.
|
|
| 32| 12| 13| 14| 15| 17| 16| 1A| 1C| 19| 1D| 1B| 18| 33|
|
|
|---------------------------------------------------------|
|
|
| 30| 0C| 0D| 0E| 0F| 10| 11| 20| 22| 1F| 23| 21| 1E| 2A|
|
|
|---------------------------------------------------------|
|
|
| 39| 00| 01| 02| 03| 05| 04| 26| 28| 25| 29| 27| 24|
|
|
|---------------------------------------------------------|
|
|
| 38| 06| 07| 08| 09| 0B| 2D| 2E| 2B| 2F| 2C| 38|
|
|
`---------------------------------------------------------'
|
|
| 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
|
|
*/
|