1 /* Copyright (C) 2011 by Jacob Alexander
3 * Permission is hereby granted, free of charge, to any person obtaining a copy
4 * of this software and associated documentation files (the "Software"), to deal
5 * in the Software without restriction, including without limitation the rights
6 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
7 * copies of the Software, and to permit persons to whom the Software is
8 * furnished to do so, subject to the following conditions:
10 * The above copyright notice and this permission notice shall be included in
11 * all copies or substantial portions of the Software.
13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
15 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
16 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
17 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
18 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
23 #include <avr/pgmspace.h>
24 #include <avr/interrupt.h>
25 #include <util/delay.h>
26 //#include "usb_keyboard.h"
29 #include "usb_keyboard_debug.h"
32 #define CPU_PRESCALE(n) (CLKPR = 0x80, CLKPR = (n))
34 // Sleep defined in milliseconds
35 #define PRE_DRIVE_SLEEP 10
36 #define POST_DRIVE_SLEEP 10
40 #define DRIVE_reg_1 PORTD
41 #define DRIVE_reg_2 PORTD
42 #define DRIVE_reg_3 PORTD
43 #define DRIVE_reg_4 PORTD
44 #define DRIVE_reg_5 PORTD
45 #define DRIVE_reg_6 PORTD
46 #define DRIVE_reg_7 PORTE
47 #define DRIVE_reg_8 PORTE
48 #define DRIVE_reg_9 PORTE
49 #define DRIVE_reg_10 <blank>
50 #define DRIVE_reg_11 <blank>
51 #define DRIVE_reg_12 <blank>
62 #define DRIVE_pin_10 <blank>
63 #define DRIVE_pin_11 <blank>
64 #define DRIVE_pin_12 <blank>
66 // Detect Pin/Group Defines
67 #define DETECT_group_1 1
68 #define DETECT_group_2 2
69 #define DETECT_group_3 3
70 #define DETECT_group_4 4
71 #define DETECT_group_5 5
72 #define DETECT_group_6 6
73 #define DETECT_group_7 7
74 #define DETECT_group_8 8
75 #define DETECT_group_9 9
76 #define DETECT_group_10 <blank>
77 #define DETECT_group_11 <blank>
78 #define DETECT_group_12 <blank>
80 #define DETECT_group_size_1 4
81 #define DETECT_group_size_2 8
82 #define DETECT_group_size_3 8
83 #define DETECT_group_size_4 7
84 #define DETECT_group_size_5 7
85 #define DETECT_group_size_6 8
86 #define DETECT_group_size_7 6
87 #define DETECT_group_size_8 7
88 #define DETECT_group_size_9 7
89 #define DETECT_group_size_10 <blank>
90 #define DETECT_group_size_11 <blank>
91 #define DETECT_group_size_12 <blank>
93 #define DETECT_group_array_1 {{KEY_ESC,KEY_CTRL,KEY_CAPS_LOCK,KEY_SHIFT},{0,1,0,1}}
94 #define DETECT_group_array_2 {{KEY_BACKSPACE,KEY_UP,KEY_DOWN,KEY_A,KEY_INSERT,KEY_ALT,KEY_Z,KEY_RIGHT},{0,0,0,0,0,1,0,0}}
95 #define DETECT_group_array_3 {{KEY_TILDE,KEY_DELETE,KEY_LEFT,KEY_SPACE,KEY_X,KEY_S,KEY_TAB,KEY_1},{0,0,0,0,0,0,0,0}}
96 #define DETECT_group_array_4 {{KEY_SLASH,KEY_RIGHT_BRACE,KEY_ENTER,KEY_D,KEY_2,KEY_Q,KEY_C},{0,0,0,0,0,0,0}}
97 #define DETECT_group_array_5 {{KEY_EQUAL,KEY_LEFT_BRACE,KEY_QUOTE,KEY_F,KEY_3,KEY_W,KEY_V},{0,0,0,0,0,0,0}}
98 #define DETECT_group_array_6 {{KEY_MINUS,KEY_P,KEY_SEMICOLON,KEY_G,KEY_4,KEY_E,KEY_B,KEY_BACKSLASH},{0,0,0,0,0,0,0,0}}
99 #define DETECT_group_array_7 {{KEY_8,KEY_U,KEY_K,KEY_7,KEY_Y,KEY_COMMA},{0,0,0,0,0,0}}
100 #define DETECT_group_array_8 {{KEY_9,KEY_I,KEY_PERIOD,KEY_J,KEY_6,KEY_T,KEY_M},{0,0,0,0,0,0,0}}
101 #define DETECT_group_array_9 {{KEY_0,KEY_O,KEY_L,KEY_H,KEY_5,KEY_R,KEY_N},{0,0,0,0,0,0,0}}
102 #define DETECT_group_array_10 <blank>
103 #define DETECT_group_array_11 <blank>
104 #define DETECT_group_array_12 <blank>
108 // Drive Macros (Generally don't need to be changed), except for maybe DRIVE_DETECT
109 #define DRIVE_DETECT(reg,pin,group) \
110 reg &= ~(1 << pin); \
113 _delay_ms(POST_DRIVE_SLEEP);
115 #define DD_CASE(number) \
117 DRIVE_DETECT(DRIVE_reg##_##number, DRIVE_pin##_##number, DETECT_group##_##number)
119 #define DD_CASE_ORD(number) \
123 #define DD_CASE_END(number,var) \
129 // Detection Macros (Probably don't need to be changed, but depending the matrix, may have to be)
130 // Determine if key is either normal or a modifier
131 #define DET_GROUP_CHECK(index) \
133 if ( groupArray[1][index] ) \
134 curDetect.modifiers |= groupArray[0][index]; \
136 curDetect.keyDetectArray[curDetect.keyDetectCount++] = groupArray[0][index]; \
140 // XXX - Detection Groups
141 // Checks each of the specified pins, and then if press detected, determine if the key is normal or a modifier
142 // Inverse logic applies for the PINs
144 // Used for 1 detection group
145 #define DET_GROUP_1 \
146 if ( !( PINC & (1 << 0) ) ) \
148 if ( !( PINE & (1 << 1) ) ) \
150 if ( !( PINE & (1 << 0) ) ) \
152 if ( !( PINB & (1 << 7) ) ) \
155 // Used for 4 detection groups
156 #define DET_GROUP_2 \
157 if ( !( PINC & (1 << 0) ) ) \
159 if ( !( PINC & (1 << 1) ) ) \
161 if ( !( PINC & (1 << 2) ) ) \
163 if ( !( PINC & (1 << 3) ) ) \
165 if ( !( PINC & (1 << 4) ) ) \
167 if ( !( PINC & (1 << 5) ) ) \
169 if ( !( PINC & (1 << 6) ) ) \
172 // Used for 1 detection group
173 #define DET_GROUP_3 \
174 if ( !( PINC & (1 << 0) ) ) \
176 if ( !( PINC & (1 << 1) ) ) \
178 if ( !( PINC & (1 << 3) ) ) \
180 if ( !( PINC & (1 << 4) ) ) \
182 if ( !( PINC & (1 << 5) ) ) \
184 if ( !( PINC & (1 << 6) ) ) \
187 // Used for 3 detection groups
188 #define DET_GROUP_4 \
189 if ( !( PINC & (1 << 0) ) ) \
191 if ( !( PINC & (1 << 1) ) ) \
193 if ( !( PINC & (1 << 2) ) ) \
195 if ( !( PINC & (1 << 3) ) ) \
197 if ( !( PINC & (1 << 4) ) ) \
199 if ( !( PINC & (1 << 5) ) ) \
201 if ( !( PINC & (1 << 6) ) ) \
203 if ( !( PINE & (1 << 1) ) ) \
206 // Combines the DET_GROUP_Xs above for the given groupArray
207 #define DET_GROUP(group,det_group) \
210 uint8_t groupArray[2][DETECT_group_size##_##group] = DETECT_group_array##_##group; \
211 DET_GROUP##_##det_group \
216 uint8_t keyDetectCount;
217 uint8_t keyDetectArray[40];
219 } curDetect, prevDetect;
221 void detection( int group )
223 _delay_ms(PRE_DRIVE_SLEEP);
225 // XXX Modify for different detection groups <-> groupArray mappings
241 // Print out the current keys pressed
242 if ( curDetect.keyDetectCount > 0 ) {
244 for ( int c = 0; c < curDetect.keyDetectCount; c++ ) {
245 phex( curDetect.keyDetectArray[c] );
250 if ( curDetect.modifiers ) {
251 print("Modifiers: ");
252 phex( curDetect.modifiers );
259 // XXX This part is configurable
262 // For each pin, 0=input, 1=output
270 // Setting pins to either high or pull-up resistor
281 // set for 16 MHz clock
287 // Initialize the USB, and then wait for the host to set configuration.
288 // If the Teensy is powered without a PC connected to the USB port,
289 // this will wait forever.
291 while ( !usb_configured() ) /* wait */ ;
293 // Wait an extra second for the PC's operating system to load drivers
294 // and do whatever it does to actually be ready for input
297 // Make sure variables are properly initialized
298 curDetect.keyDetectCount = 0;
299 curDetect.modifiers = 0;
301 // Main Detection Loop
302 // XXX Change number of ORDs if number of lines differ
303 for ( int group = 1;;group++ ) {
304 // Determine which keys are being pressed
322 // After going through each of the key groups, send the detected keys and modifiers
323 // Currently limited to the USB spec (6 keys + modifiers)
324 // Making sure to pass zeros when there are no keys being pressed
325 for ( int c = 0; c < 6 && c < curDetect.keyDetectCount; c++ )
326 keyboard_keys[c] = c < curDetect.keyDetectCount ? curDetect.keyDetectArray[c] : 0;
329 keyboard_modifier_keys = curDetect.modifiers;
335 curDetect.keyDetectCount = 0;
336 curDetect.modifiers = 0;
339 // usb_keyboard_press(KEY_B, KEY_SHIFT);