ahoneybun/qmk_firmware
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

hhkb: Add power saving code of matrix scan for JP

Browse source
This commit is contained in:
tmk 2015-07-23 11:57:15 +09:00
parent 1efdd867c8
commit d4220ac9f3
1 changed files with 8 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

8
keyboard/hhkb/hhkb_avr.h
View file

@ -45,12 +45,20 @@ static inline void KEY_PREV_OFF(void) { (PORTB &= ~(1<<7)); }
static inline void KEY_POWER_ON(void) {
DDRB = 0xFF; PORTB = 0x40; // change pins output
DDRD |= (1<<4); PORTD |= (1<<4); // MOS FET switch on
#ifdef HHKB_JP
DDRC |= (1<<6|1<<7);
PORTC |= (1<<6|1<<7);
#endif
/* Without this wait you will miss or get false key events. */
_delay_ms(5); // wait for powering up
}
static inline void KEY_POWER_OFF(void) {
/* input with pull-up consumes less than without it when pin is open. */
DDRB = 0x00; PORTB = 0xFF; // change pins input with pull-up
#ifdef HHKB_JP
DDRC &= ~(1<<6|1<<7);
PORTC |= (1<<6|1<<7);
#endif
DDRD |= (1<<4); PORTD &= ~(1<<4); // MOS FET switch off
}
static inline bool KEY_POWER_STATE(void) { return PORTD & (1<<4); }