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-rw-r--r--keyboard/IIgs/matrix.c363
1 files changed, 0 insertions, 363 deletions
diff --git a/keyboard/IIgs/matrix.c b/keyboard/IIgs/matrix.c
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--- a/keyboard/IIgs/matrix.c
+++ /dev/null
@@ -1,363 +0,0 @@
-/*
-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 "debug.h"
-#include "util.h"
-#include "matrix.h"
-#include "led.h"
-
-
-#if (MATRIX_COLS > 16)
-# error "MATRIX_COLS must not exceed 16"
-#endif
-#if (MATRIX_ROWS > 255)
-# error "MATRIX_ROWS must not exceed 255"
-#endif
-
-
-#ifndef DEBOUNCE
-# define DEBOUNCE 0
-#endif
-static uint8_t debouncing = DEBOUNCE;
-
-// matrix state buffer(1:on, 0:off)
-#if (MATRIX_COLS <= 8)
-static uint8_t *matrix;
-static uint8_t *matrix_prev;
-static uint8_t _matrix0[MATRIX_ROWS];
-static uint8_t _matrix1[MATRIX_ROWS];
-#else
-static uint16_t *matrix;
-static uint16_t *matrix_prev;
-static uint16_t _matrix0[MATRIX_ROWS];
-static uint16_t _matrix1[MATRIX_ROWS];
-#endif
-
-#ifdef MATRIX_HAS_GHOST
-static bool matrix_has_ghost_in_row(uint8_t row);
-#endif
-static uint8_t read_col(uint8_t row);
-static void unselect_rows(void);
-static void select_row(uint8_t row);
-
-
-inline
-uint8_t matrix_rows(void)
-{
- return MATRIX_ROWS;
-}
-
-inline
-uint8_t matrix_cols(void)
-{
- return MATRIX_COLS;
-}
-
-void matrix_init(void)
-{
- // initialize row and col
- unselect_rows();
- // Input with pull-up(DDR:0, PORT:1)
- // Column C1 ~ C7 (PortC0-6)
- // Column C0(Port E1)
- DDRC &= ~0b01111111;
- PORTC |= 0b01111111;
- DDRE &= ~0b00000010;
- PORTE |= 0b00000010;
- //DDRB &= ~0b00000100;
- //PORTB |= 0b00000100;
- // modifier B3/4,F4/5,E4 always input
- // A0
- //DDRA |= 0b00000001;
- //PORTA &= 0b00000001;
- //DDRB |= 0b00011000;
- //PORTB &= 0b00011000;
- //DDRF |= ~0b00110000;
- //PORTF &= 0b00110000;
- //DDRB &= ~0b00011000;
- //PORTB |= 0b00011000;
- //DDRF &= ~0b00110000;
- //PORTF |= 0b00110000;
- //DDRE &= ~0b00010000;
- //PORTE |= 0b00010000;
-
- // initialize matrix state: all keys off
- for (uint8_t i=0; i < MATRIX_ROWS; i++) _matrix0[i] = 0x00;
- for (uint8_t i=0; i < MATRIX_ROWS; i++) _matrix1[i] = 0x00;
- matrix = _matrix0;
- matrix_prev = _matrix1;
-}
-
-uint8_t matrix_scan(void)
-{
- if (!debouncing) {
- uint8_t *tmp = matrix_prev;
- matrix_prev = matrix;
- matrix = tmp;
- }
-
- for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
- unselect_rows();
- select_row(i);
- _delay_us(30); // without this wait read unstable value.
- if ( i == ( MATRIX_ROWS - 1 ) ) { // CHECK CAPS LOCK
- if (host_keyboard_leds() & (1<<USB_LED_CAPS_LOCK)) { // CAPS LOCK is ON on HOST
- if ( ~read_col(i) & (1<< 4) ) { // CAPS LOCK is still DOWN ( 0bXXX1_XXXX)
- matrix[i] = ~read_col(i) & 0b11101111; // change CAPS LOCK as released
- } else { // CAPS LOCK in UP
- matrix[i] = ~read_col(i) | 0b00010000; // send fake caps lock down
- }
- } else { // CAPS LOCK is OFF on HOST
- if (matrix[i] != (uint8_t)~read_col(i)) {
- matrix[i] = (uint8_t)~read_col(i);
- if (debouncing) {
- debug("bounce!: "); debug_hex(debouncing); print("\n");
- }
- debouncing = DEBOUNCE;
- }
- }
- } else {
- if (matrix[i] != (uint8_t)~read_col(i)) {
- matrix[i] = (uint8_t)~read_col(i);
- if (debouncing) {
- debug("bounce!: "); debug_hex(debouncing); print("\n");
- }
- debouncing = DEBOUNCE;
- }
- }
- }
- unselect_rows();
-
- if (debouncing) {
- debouncing--;
- }
-
- return 1;
-}
-
-bool matrix_is_modified(void)
-{
- if (debouncing) return false;
- for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
- if (matrix[i] != matrix_prev[i]) {
- return true;
- }
- }
- return false;
-}
-
-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)
-{
-// if ( row == ( MATRIX_ROWS - 1 ) && col == 4) { // CHECK CAPS LOCK
-// if (host_keyboard_leds() & (1<<USB_LED_CAPS_LOCK)) { // CAPS LOCK is ON on HOST
-// if ((matrix_prev[row] & 0b00010000) && (~matrix[row] & 0b00010000)) {
-// debug("CapsLock Reverse:");debug_hex(matrix[row]);
-// matrix[row] |= 0b00010000;
-// matrix_prev[row] &= ~0b00010000;
-// debug("->");debug_hex(matrix[row]);debug("\n");
-// }
-// }
-// }
- return (matrix[row] & (1<<col));
-}
-
-inline
-#if (MATRIX_COLS <= 8)
-uint8_t matrix_get_row(uint8_t row)
-#else
-uint16_t matrix_get_row(uint8_t row)
-#endif
-{
- return matrix[row];
-}
-
-void matrix_print(void)
-{
- print("\nr/c 01234567\n");
- for (uint8_t row = 0; row < matrix_rows(); row++) {
- phex(row); print(": ");
-#if (MATRIX_COLS <= 8)
- pbin_reverse(matrix_get_row(row));
-#else
- pbin_reverse16(matrix_get_row(row));
-#endif
-#ifdef MATRIX_HAS_GHOST
- if (matrix_has_ghost_in_row(row)) {
- print(" <ghost");
- }
-#endif
- print("\n");
- }
-}
-
-uint8_t matrix_key_count(void)
-{
- uint8_t count = 0;
- for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
-#if (MATRIX_COLS <= 8)
- count += bitpop(matrix[i]);
-#else
- count += bitpop16(matrix[i]);
-#endif
- }
- 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 uint8_t read_col(uint8_t row)
-{
- // For normal : Column C1 ~ C7 (PortC0-6), C0(Port E1)
- // For modifier : B3(CNTRL)/4(SHIFT),F4(CMD/GUI)/5(OPTION,ALT)
- // Modifier would be copied to report->mods except E4(CAPSLOCK)
- uint8_t tmp;
- if ( row == 10 ) {
- tmp = 0xC0;
- tmp |= (PINB >> 3 ) & 0b00000011; // LEFT CTRL is 0bit in modifier (HID Spec)
- // LEFT SHIFT is 1bit in modifier (HID Spec)
- tmp |= (PINF >> 3 ) & 0b00000100; // LEFT ALT is 2bit in modifier (HID Spec)
- tmp |= (PINF >> 1 ) & 0b00001000; // LEFT GUI is 3bit in modifier (HID Spec)
- tmp |= (PINA << 4 ) & 0b00010000; // CAPSLOCK
- tmp |= (PINB << 3 ) & 0b00100000; // POWER
- } else {
- tmp = 0x00;
- tmp = (PINE >> 1)&0b00000001;
- tmp |= PINC << 1 ;
- }
- return tmp;
-}
-
-inline
-static void unselect_rows(void)
-{
- // Hi-Z(DDR:0, PORT:0) to unselect
- // DDR : 1, output 0, input
- DDRB &= ~0b00000011; // PB: 1,0
- PORTB &= ~0b00000011;
- DDRD &= ~0b00010000; // PD: 4
- PORTD &= ~0b00010000;
- DDRE &= ~0b11000000; // PE: 7,6
- PORTE &= ~0b11000000;
- DDRF &= ~0b11000111; // PF: 7,6,2,1,0
- PORTF &= ~0b11000111;
- // to unselect virtual row(modifier), set port to output with low
- DDRA |= 0b00000001; // PA: 0 for CAPSLOCK
- PORTA &= ~0b00000001;
- DDRB |= 0b00011100; // PB: 3,4 for modifier(row10)
- PORTB &= ~0b00011100; // PB: 2 for power
- DDRF |= 0b00110000; // PF: 4,5 for modifier
- PORTF &= ~0b00110000;
-}
-
-inline
-static void select_row(uint8_t row)
-{
- // Output low(DDR:1, PORT:0) to select
- // with row enable, column could send low to AVR when pressed
- // row: 0 1 2 3 4 5 6 7 8 9
- // pin: PB1, PB0, PE7, PE6, PD4, PF2, PF0, PF1, PF6 PF7
- switch (row) {
- case 0:
- DDRB |= (1<<1);
- PORTB &= ~(1<<1);
- break;
- case 1:
- DDRB |= (1<<0);
- PORTB &= ~(1<<0);
- break;
- case 2:
- DDRE |= (1<<7);
- PORTE &= ~(1<<7);
- break;
- case 3:
- DDRE |= (1<<6);
- PORTE &= ~(1<<6);
- break;
- case 4:
- DDRD |= (1<<4);
- PORTD &= ~(1<<4);
- break;
- case 5:
- DDRF |= (1<<2);
- PORTF &= ~(1<<2);
- break;
- case 6:
- DDRF |= (1<<0);
- PORTF &= ~(1<<0);
- break;
- case 7:
- DDRF |= (1<<1);
- PORTF &= ~(1<<1);
- break;
- case 8:
- DDRF |= (1<<6);
- PORTF &= ~(1<<6);
- break;
- case 9:
- DDRF |= (1<<7);
- PORTF &= ~(1<<7);
- break;
- case 10:
- // modifier has no row enable
- // to select virtual row, set port as input
- DDRA &= ~0b00000001;
- PORTA |= 0b00000001;
- DDRB &= ~0b00011100;
- PORTB |= 0b00011100;
- DDRF &= ~0b00110000;
- PORTF |= 0b00110000;
- break;
-
- }
-}
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