343 lines
9.3 KiB
C
343 lines
9.3 KiB
C
/* Copyright (C) 2011 by Jacob Alexander
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <avr/io.h>
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#include <avr/pgmspace.h>
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#include <avr/interrupt.h>
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#include <util/delay.h>
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//#include "usb_keyboard.h"
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// TEMP INCLUDES
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#include "usb_keyboard_debug.h"
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#include <print.h>
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#define CPU_PRESCALE(n) (CLKPR = 0x80, CLKPR = (n))
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// Sleep defined in milliseconds
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#define PRE_DRIVE_SLEEP 10
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#define POST_DRIVE_SLEEP 10
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// Drive Pin Defines
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#define DRIVE_reg_1 PORTD
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#define DRIVE_reg_2 PORTD
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#define DRIVE_reg_3 PORTD
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#define DRIVE_reg_4 PORTD
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#define DRIVE_reg_5 PORTD
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#define DRIVE_reg_6 PORTD
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#define DRIVE_reg_7 PORTE
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#define DRIVE_reg_8 PORTE
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#define DRIVE_reg_9 PORTE
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#define DRIVE_reg_10 <blank>
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#define DRIVE_reg_11 <blank>
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#define DRIVE_reg_12 <blank>
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#define DRIVE_pin_1 2
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#define DRIVE_pin_2 3
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#define DRIVE_pin_3 4
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#define DRIVE_pin_4 5
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#define DRIVE_pin_5 6
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#define DRIVE_pin_6 7
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#define DRIVE_pin_7 0
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#define DRIVE_pin_8 1
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#define DRIVE_pin_9 6
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#define DRIVE_pin_10 <blank>
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#define DRIVE_pin_11 <blank>
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#define DRIVE_pin_12 <blank>
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// Detect Pin/Group Defines
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#define DETECT_group_1 1
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#define DETECT_group_2 2
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#define DETECT_group_3 3
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#define DETECT_group_4 4
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#define DETECT_group_5 5
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#define DETECT_group_6 6
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#define DETECT_group_7 7
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#define DETECT_group_8 8
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#define DETECT_group_9 9
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#define DETECT_group_10 <blank>
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#define DETECT_group_11 <blank>
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#define DETECT_group_12 <blank>
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#define DETECT_group_size_1 4
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#define DETECT_group_size_2 8
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#define DETECT_group_size_3 8
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#define DETECT_group_size_4 7
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#define DETECT_group_size_5 7
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#define DETECT_group_size_6 8
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#define DETECT_group_size_7 6
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#define DETECT_group_size_8 7
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#define DETECT_group_size_9 7
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#define DETECT_group_size_10 <blank>
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#define DETECT_group_size_11 <blank>
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#define DETECT_group_size_12 <blank>
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#define DETECT_group_array_1 {{KEY_ESC,KEY_CTRL,KEY_CAPS_LOCK,KEY_SHIFT},{0,1,0,1}}
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#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}}
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#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}}
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#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}}
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#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}}
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#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}}
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#define DETECT_group_array_7 {{KEY_8,KEY_U,KEY_K,KEY_7,KEY_Y,KEY_COMMA},{0,0,0,0,0,0}}
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#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}}
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#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}}
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#define DETECT_group_array_10 <blank>
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#define DETECT_group_array_11 <blank>
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#define DETECT_group_array_12 <blank>
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// Drive Macros (Generally don't need to be changed), except for maybe DRIVE_DETECT
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#define DRIVE_DETECT(reg,pin,group) \
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reg &= ~(1 << pin); \
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detection(group); \
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reg |= (1 << pin); \
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_delay_ms(POST_DRIVE_SLEEP);
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#define DD_CASE(number) \
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case number:\
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DRIVE_DETECT(DRIVE_reg##_##number, DRIVE_pin##_##number, DETECT_group##_##number)
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#define DD_CASE_ORD(number) \
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DD_CASE(number) \
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break;
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#define DD_CASE_END(number,var) \
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DD_CASE(number) \
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var = -1; \
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break;
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// Detection Macros (Probably don't need to be changed, but depending the matrix, may have to be)
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// Determine if key is either normal or a modifier
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#define DET_GROUP_CHECK(index) \
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{ \
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if ( groupArray[1][index] ) \
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curDetect.modifiers |= groupArray[0][index]; \
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else \
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curDetect.keyDetectArray[curDetect.keyDetectCount++] = groupArray[0][index]; \
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}
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// XXX - Detection Groups
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// Checks each of the specified pins, and then if press detected, determine if the key is normal or a modifier
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// Inverse logic applies for the PINs
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// Used for 1 detection group
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#define DET_GROUP_1 \
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if ( !( PINC & (1 << 0) ) ) \
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DET_GROUP_CHECK(3) \
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if ( !( PINE & (1 << 1) ) ) \
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DET_GROUP_CHECK(2) \
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if ( !( PINE & (1 << 0) ) ) \
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DET_GROUP_CHECK(1) \
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if ( !( PINB & (1 << 7) ) ) \
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DET_GROUP_CHECK(0)
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// Used for 4 detection groups
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#define DET_GROUP_2 \
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if ( !( PINC & (1 << 0) ) ) \
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DET_GROUP_CHECK(0) \
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if ( !( PINC & (1 << 1) ) ) \
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DET_GROUP_CHECK(1) \
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if ( !( PINC & (1 << 2) ) ) \
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DET_GROUP_CHECK(2) \
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if ( !( PINC & (1 << 3) ) ) \
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DET_GROUP_CHECK(3) \
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if ( !( PINC & (1 << 4) ) ) \
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DET_GROUP_CHECK(4) \
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if ( !( PINC & (1 << 5) ) ) \
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DET_GROUP_CHECK(5) \
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if ( !( PINC & (1 << 6) ) ) \
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DET_GROUP_CHECK(6) \
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// Used for 1 detection group
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#define DET_GROUP_3 \
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if ( !( PINC & (1 << 0) ) ) \
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DET_GROUP_CHECK(0) \
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if ( !( PINC & (1 << 1) ) ) \
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DET_GROUP_CHECK(1) \
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if ( !( PINC & (1 << 3) ) ) \
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DET_GROUP_CHECK(2) \
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if ( !( PINC & (1 << 4) ) ) \
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DET_GROUP_CHECK(3) \
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if ( !( PINC & (1 << 5) ) ) \
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DET_GROUP_CHECK(4) \
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if ( !( PINC & (1 << 6) ) ) \
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DET_GROUP_CHECK(5) \
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// Used for 3 detection groups
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#define DET_GROUP_4 \
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if ( !( PINC & (1 << 0) ) ) \
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DET_GROUP_CHECK(0) \
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if ( !( PINC & (1 << 1) ) ) \
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DET_GROUP_CHECK(1) \
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if ( !( PINC & (1 << 2) ) ) \
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DET_GROUP_CHECK(2) \
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if ( !( PINC & (1 << 3) ) ) \
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DET_GROUP_CHECK(3) \
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if ( !( PINC & (1 << 4) ) ) \
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DET_GROUP_CHECK(4) \
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if ( !( PINC & (1 << 5) ) ) \
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DET_GROUP_CHECK(5) \
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if ( !( PINC & (1 << 6) ) ) \
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DET_GROUP_CHECK(6) \
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if ( !( PINE & (1 << 1) ) ) \
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DET_GROUP_CHECK(7) \
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// Combines the DET_GROUP_Xs above for the given groupArray
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#define DET_GROUP(group,det_group) \
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case group: \
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{ \
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uint8_t groupArray[2][DETECT_group_size##_##group] = DETECT_group_array##_##group; \
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DET_GROUP##_##det_group \
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} \
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break;
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struct keys {
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uint8_t keyDetectCount;
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uint8_t keyDetectArray[40];
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uint8_t modifiers;
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} curDetect, prevDetect;
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void detection( int group )
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{
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_delay_ms(PRE_DRIVE_SLEEP);
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// XXX Modify for different detection groups <-> groupArray mappings
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switch ( group ) {
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DET_GROUP(1,1)
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/*
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DET_GROUP(2,4)
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DET_GROUP(3,4)
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DET_GROUP(4,1)
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DET_GROUP(5,4)
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DET_GROUP(6,2)
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DET_GROUP(7,2)
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DET_GROUP(8,3)
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DET_GROUP(9,2)
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*/
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}
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// Print out the current keys pressed
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if ( curDetect.keyDetectCount > 0 ) {
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print("Keys: ");
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for ( int c = 0; c < curDetect.keyDetectCount; c++ ) {
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phex( curDetect.keyDetectArray[c] );
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print(" ");
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}
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print("\n");
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}
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if ( curDetect.modifiers ) {
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print("Modifiers: ");
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phex( curDetect.modifiers );
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print("\n");
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}
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}
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// XXX This part is configurable
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void pinSetup(void)
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{
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// For each pin, 0=input, 1=output
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DDRA = 0x00;
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DDRB = 0x07;
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DDRC = 0x80;
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DDRD = 0x00;
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DDRE = 0xC0;
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DDRF = 0x31;
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// Setting pins to either high or pull-up resistor
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PORTA = 0x00;
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PORTB = 0x0F;
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PORTC = 0xFF;
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PORTD = 0x00;
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PORTE = 0xC2;
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PORTF = 0x3F;
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}
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int main( void )
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{
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// set for 16 MHz clock
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CPU_PRESCALE( 0 );
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// Configuring Pins
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pinSetup();
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// Initialize the USB, and then wait for the host to set configuration.
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// If the Teensy is powered without a PC connected to the USB port,
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// this will wait forever.
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usb_init();
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while ( !usb_configured() ) /* wait */ ;
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// Wait an extra second for the PC's operating system to load drivers
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// and do whatever it does to actually be ready for input
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_delay_ms(1000);
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// Make sure variables are properly initialized
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curDetect.keyDetectCount = 0;
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curDetect.modifiers = 0;
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// Main Detection Loop
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// XXX Change number of ORDs if number of lines differ
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for ( int group = 1;;group++ ) {
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// Determine which keys are being pressed
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switch ( group ) {
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/*
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DD_CASE_ORD(1)
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DD_CASE_ORD(2)
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DD_CASE_ORD(3)
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DD_CASE_ORD(4)
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DD_CASE_ORD(5)
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DD_CASE_ORD(6)
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DD_CASE_ORD(7)
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DD_CASE_ORD(8)
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*/
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DD_CASE_END(9,group)
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}
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if ( group != -1 )
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continue;
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// After going through each of the key groups, send the detected keys and modifiers
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// Currently limited to the USB spec (6 keys + modifiers)
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// Making sure to pass zeros when there are no keys being pressed
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for ( int c = 0; c < 6 && c < curDetect.keyDetectCount; c++ )
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keyboard_keys[c] = c < curDetect.keyDetectCount ? curDetect.keyDetectArray[c] : 0;
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// Modifiers
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keyboard_modifier_keys = curDetect.modifiers;
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// Send keypresses
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usb_keyboard_send();
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// Cleanup
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curDetect.keyDetectCount = 0;
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curDetect.modifiers = 0;
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}
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// usb_keyboard_press(KEY_B, KEY_SHIFT);
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return 0;
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}
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