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- /* Copyright (C) 2011 by Jacob Alexander
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-
- #include <avr/io.h>
- #include <avr/pgmspace.h>
- #include <avr/interrupt.h>
- #include <util/delay.h>
- //#include "usb_keyboard.h"
-
- // TEMP INCLUDES
- #include "usb_keyboard_debug.h"
- #include <print.h>
-
- #define CPU_PRESCALE(n) (CLKPR = 0x80, CLKPR = (n))
-
- // Sleep defined in milliseconds
- #define PRE_DRIVE_SLEEP 50
- #define POST_DRIVE_SLEEP 50
-
-
- #define DRIVE_reg_1 PORTB
- #define DRIVE_reg_2 PORTB
- #define DRIVE_reg_3 PORTB
- #define DRIVE_reg_4 PORTC
- #define DRIVE_reg_5 PORTE
- #define DRIVE_reg_6 PORTE
- #define DRIVE_reg_7 PORTF
- #define DRIVE_reg_8 PORTF
- #define DRIVE_reg_9 PORTF
- #define DRIVE_reg_10 <blank>
- #define DRIVE_reg_11 <blank>
- #define DRIVE_reg_12 <blank>
-
- #define DRIVE_pin_1 0
- #define DRIVE_pin_2 1
- #define DRIVE_pin_3 2
- #define DRIVE_pin_4 7
- #define DRIVE_pin_5 6
- #define DRIVE_pin_6 7
- #define DRIVE_pin_7 0
- #define DRIVE_pin_8 4
- #define DRIVE_pin_9 5
- #define DRIVE_pin_10 <blank>
- #define DRIVE_pin_11 <blank>
- #define DRIVE_pin_12 <blank>
-
- #define DETECT_group_1 1
- #define DETECT_group_2 2
- #define DETECT_group_3 3
- #define DETECT_group_4 4
- #define DETECT_group_5 5
- #define DETECT_group_6 6
- #define DETECT_group_7 7
- #define DETECT_group_8 8
- #define DETECT_group_9 9
- #define DETECT_group_10 <blank>
- #define DETECT_group_11 <blank>
- #define DETECT_group_12 <blank>
-
- #define DETECT_group_size_1 7
- #define DETECT_group_size_2 8
- #define DETECT_group_size_3 8
- #define DETECT_group_size_4 4
- #define DETECT_group_size_5 8
- #define DETECT_group_size_6 7
- #define DETECT_group_size_7 7
- #define DETECT_group_size_8 6
- #define DETECT_group_size_9 7
- #define DETECT_group_size_10 <blank>
- #define DETECT_group_size_11 <blank>
- #define DETECT_group_size_12 <blank>
-
- #define DETECT_group_array_1 {{KEY_SLASH,KEY_RIGHT_BRACE,KEY_ENTER,KEY_D,KEY_2,KEY_Q,KEY_C},{0,0,0,0,0,0,0}}
- #define DETECT_group_array_2 {{KEY_TILDE,KEY_DELETE,KEY_LEFT,KEY_SPACE,KEY_X,KEY_S,KEY_TAB,KEY_1},{0,0,0,0,0,0,0,0}}
- #define DETECT_group_array_3 {{KEY_BACKSPACE,KEY_UP,KEY_DOWN,KEY_A,KEY_INSERT,KEY_ALT,KEY_Z,KEY_RIGHT},{0,0,0,0,0,1,0,0}}
- #define DETECT_group_array_4 {{KEY_ESC ,KEY_CTRL,KEY_CAPS_LOCK,KEY_SHIFT} ,{0,1,0,1}}
- #define DETECT_group_array_5 0
- #define DETECT_group_array_6 0
- #define DETECT_group_array_7 {{KEY_L ,KEY_O ,KEY_0 ,KEY_N ,KEY_H,KEY_R,KEY_5},{0,0,0,0,0,0,0}}
- #define DETECT_group_array_8 0
- #define DETECT_group_array_9 0
- #define DETECT_group_array_10 <blank>
- #define DETECT_group_array_11 <blank>
- #define DETECT_group_array_12 <blank>
-
-
-
-
-
-
-
- // XXX Change number of ORDs if number of lines differ
- #define DD_LOOP \
- for ( int c = 1;; c++ ) { \
- switch ( c ) { \
- DD_CASE_ORD(1) \
- DD_CASE_ORD(2) \
- DD_CASE_ORD(3) \
- DD_CASE_END(4,c) \
- } \
- }
-
- #define DRIVE_DETECT(reg,pin,group) \
- reg &= ~(1 << pin); \
- detection(group); \
- reg |= (1 << pin); \
- _delay_ms(POST_DRIVE_SLEEP);
-
- #define DD_CASE(number) \
- case number:\
- DRIVE_DETECT(DRIVE_reg##_##number, DRIVE_pin##_##number, DETECT_group##_##number)
-
- #define DD_CASE_ORD(number) \
- DD_CASE(number) \
- break;
-
- #define DD_CASE_END(number,var) \
- DD_CASE(number) \
- var = -1; \
- break;
-
- // Determine if key is either normal or a modifier
- #define DET_GROUP_CHECK(index) \
- { \
- if ( groupArray[1][index] ) \
- curDetect.modifiers |= groupArray[0][index]; \
- else \
- curDetect.keyDetectArray[curDetect.keyDetectCount++] = groupArray[0][index]; \
- }
-
- // XXX - Detection Groups
- // Checks each of the specified pins, and then if press detected, determine if the key is normal or a modifier
- // Inverse logic applies for the PINs
-
- // Used for 1 detection group
- #define DET_GROUP_1 \
- if ( !( PINB & (1 << 3) ) ) \
- DET_GROUP_CHECK(3) \
- if ( !( PINF & (1 << 1) ) ) \
- DET_GROUP_CHECK(2) \
- if ( !( PINF & (1 << 2) ) ) \
- DET_GROUP_CHECK(1) \
- if ( !( PINF & (1 << 3) ) ) \
- DET_GROUP_CHECK(0)
-
- // Used for 4 detection groups
- #define DET_GROUP_2 \
- if ( !( PINC & (1 << 0) ) ) \
- DET_GROUP_CHECK(0) \
- if ( !( PINC & (1 << 1) ) ) \
- DET_GROUP_CHECK(1) \
- if ( !( PINC & (1 << 2) ) ) \
- DET_GROUP_CHECK(2) \
- if ( !( PINC & (1 << 3) ) ) \
- DET_GROUP_CHECK(3) \
- if ( !( PINC & (1 << 4) ) ) \
- DET_GROUP_CHECK(4) \
- if ( !( PINC & (1 << 5) ) ) \
- DET_GROUP_CHECK(5) \
- if ( !( PINC & (1 << 6) ) ) \
- DET_GROUP_CHECK(6) \
-
- // Used for 1 detection group
- #define DET_GROUP_3 \
- if ( !( PINC & (1 << 0) ) ) \
- DET_GROUP_CHECK(0) \
- if ( !( PINC & (1 << 1) ) ) \
- DET_GROUP_CHECK(1) \
- if ( !( PINC & (1 << 2) ) ) \
- DET_GROUP_CHECK(3) \
- if ( !( PINC & (1 << 4) ) ) \
- DET_GROUP_CHECK(4) \
- if ( !( PINC & (1 << 5) ) ) \
- DET_GROUP_CHECK(5) \
- if ( !( PINC & (1 << 6) ) ) \
- DET_GROUP_CHECK(6) \
-
- // Used for 3 detection groups
- #define DET_GROUP_4 \
- if ( !( PINC & (1 << 0) ) ) \
- DET_GROUP_CHECK(0) \
- if ( !( PINC & (1 << 1) ) ) \
- DET_GROUP_CHECK(1) \
- if ( !( PINC & (1 << 2) ) ) \
- DET_GROUP_CHECK(2) \
- if ( !( PINC & (1 << 3) ) ) \
- DET_GROUP_CHECK(3) \
- if ( !( PINC & (1 << 4) ) ) \
- DET_GROUP_CHECK(4) \
- if ( !( PINC & (1 << 5) ) ) \
- DET_GROUP_CHECK(5) \
- if ( !( PINC & (1 << 6) ) ) \
- DET_GROUP_CHECK(6) \
- if ( !( PINE & (1 << 1) ) ) \
- DET_GROUP_CHECK(7) \
-
- // Combines the DET_GROUP_Xs above for the given groupArray
- #define DET_GROUP(group,det_group) \
- case group: \
- { \
- uint8_t groupArray[2][DETECT_group_size##_##group] = DETECT_group_array##_##group; \
- DET_GROUP##_##det_group \
- } \
- break;
-
- struct keys {
- uint8_t keyDetectCount;
- uint8_t keyDetectArray[40];
- uint8_t modifiers;
- } curDetect, prevDetect;
-
- void detection( int group )
- {
- _delay_ms(PRE_DRIVE_SLEEP);
- curDetect.keyDetectCount = 0;
- curDetect.modifiers = 0;
-
- // XXX Modify for different detection groups <-> groupArray mappings
- switch ( group ) {
- DET_GROUP(1,2)
- DET_GROUP(2,4)
- DET_GROUP(3,4)
- DET_GROUP(4,1)
- //DET_GROUP(5,4)
- //DET_GROUP(6,2)
- //DET_GROUP(7,2)
- //DET_GROUP(8,3)
- //DET_GROUP(9,2)
- }
-
-
- // Print out the current keys pressed
- if ( curDetect.keyDetectCount > 0 ) {
- print("Keys: ");
- for ( int c = 0; c < curDetect.keyDetectCount; c++ ) {
- phex( curDetect.keyDetectArray[c] );
- print(" ");
- }
- print("\n");
- }
- if ( curDetect.modifiers ) {
- print("Modifiers: ");
- phex( curDetect.modifiers );
- print("\n");
- }
- }
-
-
-
- // XXX This part is configurable
- void pinSetup(void)
- {
- // For each pin, 0=input, 1=output
- DDRA = 0x00;
- DDRB = 0x07;
- DDRC = 0x80;
- DDRD = 0x00;
- DDRE = 0xC0;
- DDRF = 0x31;
-
- // Setting pins to either high or pull-up resistor
- PORTA = 0x00;
- PORTB = 0xFF;
- PORTC = 0xFF;
- PORTD = 0x00;
- PORTE = 0xFF;
- PORTF = 0xFF;
- }
-
- int main( void )
- {
- // set for 16 MHz clock
- CPU_PRESCALE( 0 );
-
- // Configuring Pins
- pinSetup();
-
- // Initialize the USB, and then wait for the host to set configuration.
- // If the Teensy is powered without a PC connected to the USB port,
- // this will wait forever.
- usb_init();
- while ( !usb_configured() ) /* wait */ ;
-
- // Wait an extra second for the PC's operating system to load drivers
- // and do whatever it does to actually be ready for input
- _delay_ms(1000);
-
- // Main Detection Loop
- DD_LOOP
-
- // usb_keyboard_press(KEY_B, KEY_SHIFT);
- return 0;
- }
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