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Added protocol support for Macintosh keyboard M0110.

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tmk 14 years ago
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commit 3f0289e666
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304
m0110.c
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/*
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.
*/
#include <stdbool.h>
#include <avr/io.h>
#include <avr/interrupt.h>
#include <util/delay.h>
#include "m0110.h"
#include "debug.h"
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);
/*
Primitive M0110 Library for AVR
==============================
Signaling
---------
CLOCK is always from KEYBOARD. DATA are sent with MSB first.
1) IDLE: both line is 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
bit 0 always 1
To get scan code, use ((bits&(1<<7)) | ((bits&7F))>>1).
SCAN CODE:
M0110A
,---------------------------------------------------------.
| `| 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|
`------------------------------------------------'
References
----------
Protocol:
http://www.mac.linux-m68k.org/devel/plushw.php
Connector:
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:
http://m0115.web.fc2.com/m0110.jpg
http://m0115.web.fc2.com/m0110a.jpg
*/
#define WAIT(stat, us, err) do { \
if (!wait_##stat(us)) { \
m0110_error = err; \
goto ERROR; \
} \
} while (0)
uint8_t m0110_error = 0;
void m0110_init(void)
{
uint8_t data;
idle();
_delay_ms(255);
m0110_send(M0110_MODLE);
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(clock_lo, 1000, 0);
for (uint8_t bit = 0x80; bit; bit >>= 1) {
WAIT(clock_lo, 250, 3);
_delay_us(15);
if (data&bit) {
data_hi();
} else {
data_lo();
}
WAIT(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");
}
idle();
return 0;
}
uint8_t m0110_recv(void)
{
uint8_t data = 0;
m0110_error = 0;
WAIT(clock_lo, -1, 0); // need 250ms? insted 0xffff(16bit max)us
for (uint8_t i = 0; i < 8; i++) {
data <<= 1;
WAIT(clock_lo, 200, 2);
WAIT(clock_hi, 200, 3);
if (data_in()) {
data |= 1;
}
}
idle();
print("m0110_send recv data: "); phex(data); print("\n");
return data;
ERROR:
if (m0110_error) {
print("m0110_recv err: "); phex(m0110_error); print("\n");
}
idle();
return 0xFF;
}
uint8_t m0110_recv_key(void)
{
uint8_t key;
m0110_send(M0110_INQUIRY);
key = m0110_recv();
if (key == 0xFF || key == M0110_NULL)
return M0110_NULL;
else
return (key&(1<<7) | (key&0x7F)>>1);
}
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();
}

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m0110.h
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/*
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.
*/
#ifndef M0110_H
#define M0110_H
/* port settings for clock and data line */
#if !(defined(M0110_CLOCK_PORT) && \
defined(M0110_CLOCK_PIN) && \
defined(M0110_CLOCK_DDR) && \
defined(M0110_CLOCK_BIT))
# error "M0110 clock port setting is required in config.h"
#endif
#if !(defined(M0110_DATA_PORT) && \
defined(M0110_DATA_PIN) && \
defined(M0110_DATA_DDR) && \
defined(M0110_DATA_BIT))
# error "M0110 data port setting is required in config.h"
#endif
#define M0110_INQUIRY 0x10
#define M0110_INSTNAT 0x14
#define M0110_MODLE 0x16
#define M0110_TEST 0x36
#define M0110_NULL 0x7B
extern uint8_t m0110_error;
/* host role */
void m0110_host_init(void);
uint8_t m0110_send(uint8_t data);
uint8_t m0110_recv(void);
uint8_t m0110_recv_key(void);
#endif

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m0110_usb/Makefile
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# Target file name (without extension).
TARGET = m0110
# Directory common source filess exist
COMMON_DIR = ..
# Directory keyboard dependent files exist
TARGET_DIR = .
# keyboard dependent files
SRC = main.c \
keymap.c \
matrix.c \
led.c \
m0110.c
CONFIG_H = config.h
# MCU name, you MUST set this to match the board you are using
# type "make clean" after changing this, so all files will be rebuilt
#MCU = at90usb162 # Teensy 1.0
MCU = atmega32u4 # Teensy 2.0
#MCU = at90usb646 # Teensy++ 1.0
#MCU = at90usb1286 # Teensy++ 2.0
# Processor frequency.
# Normally the first thing your program should do is set the clock prescaler,
# so your program will run at the correct speed. You should also set this
# variable to same clock speed. The _delay_ms() macro uses this, and many
# examples use this variable to calculate timings. Do not add a "UL" here.
F_CPU = 16000000
# Build Options
# *Comment out* to disable the options.
#
#MOUSEKEY_ENABLE = yes # Mouse keys
#PS2_MOUSE_ENABLE = yes # PS/2 mouse(TrackPoint) support
#EXTRAKEY_ENABLE = yes # Audio control and System control
#NKRO_ENABLE = yes # USB Nkey Rollover
#---------------- Programming Options --------------------------
PROGRAM_CMD = teensy_loader_cli -mmcu=$(MCU) -w -v $(TARGET).hex
include $(COMMON_DIR)/pjrc.mk
include $(COMMON_DIR)/common.mk

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m0110_usb/README
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M0110 to USB keyboard converter
===============================
This firmware converts protocol for Apple Machintosh Keybard M0110.
Connection
----------
You need 4P4C plug and cable to connect Teensy into M0110.
Teensy port F0 is assigned for CLOCK line and F1 for DATA by default, you can change pin configuration with editing config.h..
Plug:
http://en.wikipedia.org/wiki/Modular_connector#4P4C
Pinout:
http://www.kbdbabel.org/conn/kbd_connector_macplus.png
1(Black): GND
2(Red): CLOCK
3(Green): DATA
4(Yellow): +5V
Build Frimware
--------------
Optionally edit Makefile and config.h for build options, pin configuration or MCU.
$ cd m0110_usb
$ make
and program your Teensy with loader.
Keymap
------
You can change a keymap by editing code of keymap.c like following.
How to define the keymap is probably obvious. You can find key symbols in usb_keycodes.h.
This is a default keymap for M0110.
,---------------------------------------------------------.
| `| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| -| =|Bacpa|
|---------------------------------------------------------|
|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| ,| ,| /|Shift |
`---------------------------------------------------------'
|Opt|Alt | Space |Alt |Opt|
`-----------------------------------------------'
Notes
-----
EOF

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m0110_usb/config.h
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/*
Copyright 2011 Jun Wako <wakojun@gmail.com>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef CONFIG_H
#define CONFIG_H
/* controller configuration */
#include "controller_teensy.h"
#define VENDOR_ID 0xFEED
#define PRODUCT_ID 0x0110
#define MANUFACTURER t.m.k.
#define PRODUCT M0110 keyboard converter
#define DESCRIPTION convert M0110 keyboard to USB
/* matrix size */
#define MATRIX_ROWS 8
#define MATRIX_COLS 8
/* Locking Caps Lock support */
//#define MATRIX_HAS_LOCKING_CAPS
/* key combination for command */
#define IS_COMMAND() ( \
keyboard_report->mods == (MOD_BIT(KB_LSHIFT) | MOD_BIT(KB_LCTRL) | MOD_BIT(KB_LALT) | MOD_BIT(KB_LGUI)) || \
keyboard_report->mods == (MOD_BIT(KB_LSHIFT) | MOD_BIT(KB_RSHIFT)) \
)
/* mouse keys */
#ifdef MOUSEKEY_ENABLE
# define MOUSEKEY_DELAY_TIME 192
#endif
/* ports */
#define M0110_CLOCK_PORT PORTF
#define M0110_CLOCK_PIN PINF
#define M0110_CLOCK_DDR DDRF
#define M0110_CLOCK_BIT 0
#define M0110_DATA_PORT PORTF
#define M0110_DATA_PIN PINF
#define M0110_DATA_DDR DDRF
#define M0110_DATA_BIT 1
#endif

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m0110_usb/keymap.c
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/*
Copyright 2011 Jun Wako <wakojun@gmail.com>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/*
* Keymap for ADB keyboard
*/
#include <stdint.h>
#include <stdbool.h>
#include <avr/pgmspace.h>
#include "usb_keyboard.h"
#include "usb_keycodes.h"
#include "print.h"
#include "debug.h"
#include "util.h"
#include "keymap.h"
#define KEYCODE(layer, row, col) (pgm_read_byte(&keymaps[(layer)][(row)][(col)]))
// Convert physical keyboard layout to matrix array.
// This is a macro to define keymap easily in keyboard layout form.
// TODO: layout for M0110A
/* M0110 */
#define KEYMAP( \
K32,K12,K13,K14,K15,K17,K16,K1A,K1C,K19,K1D,K1B,K18,K33, \
K30,K0C,K0D,K0E,K0F,K11,K10,K20,K22,K1F,K23,K21,K1E,K2A, \
K39,K00,K01,K02,K03,K05,K04,K26,K28,K25,K29,K27, K24, \
K38,K06,K07,K08,K09,K0B,K2D,K2E,K2B,K2F,K2C, \
K3A,K37, K31, K34 \
) { \
{ KB_##K00, KB_##K01, KB_##K02, KB_##K03, KB_##K04, KB_##K05, KB_##K06, KB_##K07 }, \
{ KB_##K08, KB_##K09, KB_NO, KB_##K0B, KB_##K0C, KB_##K0D, KB_##K0E, KB_##K0F }, \
{ KB_##K10, KB_##K11, KB_##K12, KB_##K13, KB_##K14, KB_##K15, KB_##K16, KB_##K17 }, \
{ KB_##K18, KB_##K19, KB_##K1A, KB_##K1B, KB_##K1C, KB_##K1D, KB_##K1E, KB_##K1F }, \
{ KB_##K20, KB_##K21, KB_##K22, KB_##K23, KB_##K24, KB_##K25, KB_##K26, KB_##K27 }, \
{ KB_##K28, KB_##K29, KB_##K2A, KB_##K2B, KB_##K2C, KB_##K2D, KB_##K2E, KB_##K2F }, \
{ KB_##K30, KB_##K31, KB_##K32, KB_##K33, KB_##K34, KB_NO, KB_NO, KB_##K37 }, \
{ KB_##K38, KB_##K39, KB_##K3A, KB_NO, KB_NO, KB_NO, KB_NO, KB_NO } \
}
// Assign Fn key(0-7) to a layer to which switch with the Fn key pressed.
static const uint8_t PROGMEM fn_layer[] = {
0, // Fn0
0, // Fn1
0, // Fn2
0, // Fn3
0, // Fn4
0, // Fn5
0, // Fn6
0 // Fn7
};
// Assign Fn key(0-7) to a keycode sent when release Fn key without use of the layer.
// See layer.c for details.
static const uint8_t PROGMEM fn_keycode[] = {
KB_NO, // Fn0
KB_NO, // Fn1
KB_NO, // Fn2
KB_NO, // Fn3
KB_NO, // Fn4
KB_NO, // Fn5
KB_NO, // Fn6
KB_NO // Fn7
};
static const uint8_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
/* Default Layer: plain keymap
* ,---------------------------------------------------------.
* | `| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| -| =|Bacpa|
* |---------------------------------------------------------|
* |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| ,| ,| /|Shift |
* `---------------------------------------------------------'
* |Opt|Alt | Space |Alt |Opt|
* `-----------------------------------------------'
*/
KEYMAP(
GRV, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, MINS,EQL, BSPC,
TAB, Q, W, E, R, T, Y, U, I, O, P, LBRC,RBRC,BSLS,
CAPS,A, S, D, F, G, H, J, K, L, SCLN,QUOT, ENT,
LSFT,Z, X, C, V, B, N, M, COMM,DOT, SLSH,
LGUI,LALT, SPC, RALT
),
};
uint8_t keymap_get_keycode(uint8_t layer, uint8_t row, uint8_t col)
{
return KEYCODE(layer, row, col);
}
uint8_t keymap_fn_layer(uint8_t fn_bits)
{
return pgm_read_byte(&fn_layer[biton(fn_bits)]);
}
uint8_t keymap_fn_keycode(uint8_t fn_bits)
{
return pgm_read_byte(&fn_keycode[(biton(fn_bits))]);
}

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m0110_usb/led.c
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/*
Copyright 2011 Jun Wako <wakojun@gmail.com>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "stdint.h"
#include "led.h"
void led_set(uint8_t usb_led)
{
}

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m0110_usb/matrix.c
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/*
Copyright 2011 Jun Wako <wakojun@gmail.com>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/*
* scan matrix
*/
#include <stdint.h>
#include <stdbool.h>
#include <avr/io.h>
#include <util/delay.h>
#include "print.h"
#include "util.h"
#include "debug.h"
#include "host.h"
#include "led.h"
#include "m0110.h"
#include "matrix.h"
#define CAPS 0x39
#define CAPS_UP (CAPS | 0x80)
#define ROW(key) ((key)>>3&0x0F)
#define COL(key) ((key)&0x07)
static bool is_modified = false;
// matrix state buffer(1:on, 0:off)
static uint8_t *matrix;
static uint8_t _matrix0[MATRIX_ROWS];
#ifdef MATRIX_HAS_GHOST
static bool matrix_has_ghost_in_row(uint8_t row);
#endif
static void register_key(uint8_t key);
inline
uint8_t matrix_rows(void)
{
return MATRIX_ROWS;
}
inline
uint8_t matrix_cols(void)
{
return MATRIX_COLS;
}
void matrix_init(void)
{
print_enable = true;
debug_enable = true;
debug_matrix = false;
debug_keyboard = false;
debug_mouse = false;
print("debug enabled.\n");
m0110_init();
// initialize matrix state: all keys off
for (uint8_t i=0; i < MATRIX_ROWS; i++) _matrix0[i] = 0x00;
matrix = _matrix0;
return;
}
uint8_t matrix_scan(void)
{
uint8_t key;
is_modified = false;
key = m0110_recv_key();
#ifdef MATRIX_HAS_LOCKING_CAPS
// Send Caps key up event
if (matrix_is_on(ROW(CAPS), COL(CAPS))) {
is_modified = true;
register_key(CAPS_UP);
}
#endif
if (key == M0110_NULL) {
return 0;
} else {
#ifdef MATRIX_HAS_LOCKING_CAPS
if (host_keyboard_leds() & (1<<USB_LED_CAPS_LOCK)) {
// CAPS LOCK on:
// Ignore LockingCaps key down event
if (key == CAPS) return 0;
// Convert LockingCaps key up event into down event
if (key == CAPS_UP) key = CAPS;
} else {
// CAPS LOCK off:
// Ignore LockingCaps key up event
if (key == CAPS_UP) return 0;
}
#endif
is_modified = true;
register_key(key);
}
if (debug_enable) {
print("key: "); phex(key); print("\n");
}
return 1;
}
bool matrix_is_modified(void)
{
return is_modified;
}
inline
bool matrix_has_ghost(void)
{
#ifdef MATRIX_HAS_GHOST
for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
if (matrix_has_ghost_in_row(i))
return true;
}
#endif
return false;
}
inline
bool matrix_is_on(uint8_t row, uint8_t col)
{
return (matrix[row] & (1<<col));
}
inline
uint8_t matrix_get_row(uint8_t row)
{
return matrix[row];
}
void matrix_print(void)
{
print("\nr/c 01234567\n");
for (uint8_t row = 0; row < matrix_rows(); row++) {
phex(row); print(": ");
pbin_reverse(matrix_get_row(row));
print("\n");
}
}
uint8_t matrix_key_count(void)
{
uint8_t count = 0;
for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
count += bitpop(matrix[i]);
}
return count;
}
#ifdef MATRIX_HAS_GHOST
inline
static bool matrix_has_ghost_in_row(uint8_t row)
{
// no ghost exists in case less than 2 keys on
if (((matrix[row] - 1) & matrix[row]) == 0)
return false;
// ghost exists in case same state as other row
for (uint8_t i=0; i < MATRIX_ROWS; i++) {
if (i != row && (matrix[i] & matrix[row]) == matrix[row])
return true;
}
return false;
}
#endif
inline
static void register_key(uint8_t key)
{
if (key&0x80) {
matrix[ROW(key)] &= ~(1<<COL(key));
} else {
matrix[ROW(key)] |= (1<<COL(key));
}
}
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