diff options
Diffstat (limited to 'keyboard/hhkb_rn42/matrix.c')
| -rw-r--r-- | keyboard/hhkb_rn42/matrix.c | 191 |
1 files changed, 0 insertions, 191 deletions
diff --git a/keyboard/hhkb_rn42/matrix.c b/keyboard/hhkb_rn42/matrix.c deleted file mode 100644 index c6c444ff52..0000000000 --- a/keyboard/hhkb_rn42/matrix.c +++ /dev/null @@ -1,191 +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 <util/delay.h> -#include "print.h" -#include "debug.h" -#include "util.h" -#include "timer.h" -#include "matrix.h" -#include "hhkb_avr.h" -#include <avr/wdt.h> -#include "suspend.h" -#include "lufa.h" - - -// matrix power saving -#define MATRIX_POWER_SAVE 10000 -static uint32_t matrix_last_modified = 0; -static bool matrix_power = true; - -// matrix state buffer(1:on, 0:off) -static matrix_row_t *matrix; -static matrix_row_t *matrix_prev; -static matrix_row_t _matrix0[MATRIX_ROWS]; -static matrix_row_t _matrix1[MATRIX_ROWS]; - - -inline -uint8_t matrix_rows(void) -{ - return MATRIX_ROWS; -} - -inline -uint8_t matrix_cols(void) -{ - return MATRIX_COLS; -} - -void matrix_init(void) -{ -#ifdef DEBUG - debug_enable = true; - debug_keyboard = true; -#endif - - KEY_INIT(); - - // 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) -{ - uint8_t *tmp; - - tmp = matrix_prev; - matrix_prev = matrix; - matrix = tmp; - - matrix_power_up(); - for (uint8_t row = 0; row < MATRIX_ROWS; row++) { - for (uint8_t col = 0; col < MATRIX_COLS; col++) { - KEY_SELECT(row, col); - _delay_us(5); - - // Not sure this is needed. This just emulates HHKB controller's behaviour. - if (matrix_prev[row] & (1<<col)) { - KEY_PREV_ON(); - } - _delay_us(10); - - // NOTE: KEY_STATE is valid only in 20us after KEY_ENABLE. - // If V-USB interrupts in this section we could lose 40us or so - // and would read invalid value from KEY_STATE. - uint8_t last = TIMER_RAW; - - KEY_ENABLE(); - - // Wait for KEY_STATE outputs its value. - // 1us was ok on one HHKB, but not worked on another. - // no wait doesn't work on Teensy++ with pro(1us works) - // no wait does work on tmk PCB(8MHz) with pro2 - // 1us wait does work on both of above - // 1us wait doesn't work on tmk(16MHz) - // 5us wait does work on tmk(16MHz) - // 5us wait does work on tmk(16MHz/2) - // 5us wait does work on tmk(8MHz) - // 10us wait does work on Teensy++ with pro - // 10us wait does work on 328p+iwrap with pro - // 10us wait doesn't work on tmk PCB(8MHz) with pro2(very lagged scan) - _delay_us(5); - - if (KEY_STATE()) { - matrix[row] &= ~(1<<col); - } else { - matrix[row] |= (1<<col); - } - - // Ignore if this code region execution time elapses more than 20us. - // MEMO: 20[us] * (TIMER_RAW_FREQ / 1000000)[count per us] - // MEMO: then change above using this rule: a/(b/c) = a*1/(b/c) = a*(c/b) - if (TIMER_DIFF_RAW(TIMER_RAW, last) > 20/(1000000/TIMER_RAW_FREQ)) { - matrix[row] = matrix_prev[row]; - } - - _delay_us(5); - KEY_PREV_OFF(); - KEY_UNABLE(); - - // NOTE: KEY_STATE keep its state in 20us after KEY_ENABLE. - // This takes 25us or more to make sure KEY_STATE returns to idle state. - _delay_us(75); - } - if (matrix[row] ^ matrix_prev[row]) matrix_last_modified = timer_read32(); - } - matrix_power_down(); - return 1; -} - -bool matrix_is_modified(void) -{ - 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) -{ - return false; -} - -inline -bool matrix_is_on(uint8_t row, uint8_t col) -{ - return (matrix[row] & (1<<col)); -} - -inline -matrix_row_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++) { - xprintf("%02X: %08b\n", row, bitrev(matrix_get_row(row))); - } -} - -void matrix_power_up(void) { - if (matrix_power) return; - KEY_POWER_ON(); - matrix_power = true; -} -void matrix_power_down(void) { - if (!matrix_power) return; - // doesn't power save while USB connection is active - if (USB_DeviceState == DEVICE_STATE_Configured) return; - if (timer_elapsed32(matrix_last_modified) <= MATRIX_POWER_SAVE) return; - KEY_POWER_OFF(); - suspend_power_down(WDTO_15MS); - matrix_power = false; -} |