drashna/qmk_firmware
1
0
Fork 0
Code Activity Actions

Added Bulegiga iWRAP support into HHKB.(Bluetooth)

Browse source
This commit is contained in:
tmk 2011-09-17 22:39:50 +09:00
parent b703de7b29
commit e67c988824
90 changed files with 3154 additions and 541 deletions
Download patch file Download diff file Expand all files Collapse all files

66
hhkb/matrix.c
View file

@ -25,9 +25,15 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
#include <util/delay.h>
#include "print.h"
#include "util.h"
#include "timer.h"
#include "matrix.h"
// Timer resolution check
#if (1000000/TIMER_RAW_FREQ > 20)
# error "Timer resolution(>20us) is not enough for HHKB matrix scan tweak on V-USB."
#endif
#if (MATRIX_COLS > 16)
# error "MATRIX_COLS must not exceed 16"
#endif
@ -82,18 +88,22 @@ static bool matrix_has_ghost_in_row(uint8_t row);
#define KEY_STATE() (PINE & (1<<6))
#define KEY_PREV_ON() (PORTE |= (1<<7))
#define KEY_PREV_OFF() (PORTE &= ~(1<<7))
#define KEY_POWER_ON()
#define KEY_POWER_OFF()
#else
// Ports for V-USB
// key: PB0(pull-uped)
// prev: PB1
// row: PB2-4
// col: PC0-2,3
// power: PB5(Low:on/Hi-z:off)
#define KEY_INIT() do { \
DDRB |= 0x1E; \
DDRB &= ~(1<<0); \
PORTB |= (1<<0); \
DDRC |= 0x0F; \
DDRB |= 0x3E; \
DDRB &= ~(1<<0); \
PORTB |= 1<<0; \
DDRC |= 0x0F; \
KEY_UNABLE(); \
KEY_PREV_OFF(); \
} while (0)
#define KEY_SELECT(ROW, COL) do { \
PORTB = (PORTB & 0xE3) | ((ROW) & 0x07)<<2; \
@ -104,6 +114,18 @@ static bool matrix_has_ghost_in_row(uint8_t row);
#define KEY_STATE() (PINB & (1<<0))
#define KEY_PREV_ON() (PORTB |= (1<<1))
#define KEY_PREV_OFF() (PORTB &= ~(1<<1))
// Power supply switching
#define KEY_POWER_ON() do { \
KEY_INIT(); \
PORTB &= ~(1<<5); \
_delay_us(200); \
} while (0)
#define KEY_POWER_OFF() do { \
DDRB &= ~0x3F; \
PORTB &= ~0x3F; \
DDRC &= ~0x0F; \
PORTC &= ~0x0F; \
} while (0)
#endif
@ -138,36 +160,46 @@ uint8_t matrix_scan(void)
matrix_prev = matrix;
matrix = tmp;
KEY_POWER_ON();
for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
for (uint8_t col = 0; col < MATRIX_COLS; col++) {
KEY_SELECT(row, col);
_delay_us(40); // from logic analyzer chart
_delay_us(40);
// Not sure this is needed. This just emulates HHKB controller's behaviour.
if (matrix_prev[row] & (1<<col)) {
KEY_PREV_ON();
}
_delay_us(7); // from logic analyzer chart
_delay_us(7);
// 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;
#if HOST_VUSB
// to avoid V-USB interrupt during read key state
uint8_t sreg = SREG;
cli();
#endif
KEY_ENABLE();
_delay_us(10); // from logic analyzer chart
// Wait for KEY_STATE outputs its value.
// 1us was ok on one HHKB, but not worked on another.
_delay_us(10);
if (KEY_STATE()) {
matrix[row] &= ~(1<<col);
} else {
matrix[row] |= (1<<col);
}
#if HOST_VUSB
SREG = sreg;
#endif
// Ignore if this code region execution time elapses more than 20us.
if (TIMER_DIFF_RAW(TIMER_RAW, last) > 20/(1000000/TIMER_RAW_FREQ)) {
matrix[row] = matrix_prev[row];
}
KEY_PREV_OFF();
KEY_UNABLE();
_delay_us(150); // from logic analyzer chart
// 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(150);
}
}
KEY_POWER_OFF();
return 1;
}