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Fixed brightness control; Reduced number of brightness levels to 4. #25

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merged 1 commit into from
Jul 25, 2015
Merged

Fixed brightness control; Reduced number of brightness levels to 4. #25

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22 changes: 17 additions & 5 deletions keyboard/planck/backlight.c
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Original file line number Diff line number Diff line change
Expand Up @@ -36,14 +36,26 @@ void backlight_set(uint8_t level)
{
// Turn off PWM control on PB7, revert to output low.
TCCR1A &= ~(_BV(COM1C1));
// CHANNEL = level << OFFSET | 0x0FFF;
CHANNEL = ((1 << level) - 1);
CHANNEL = 0x0;
// Prevent backlight blink on lowest level
PORTB &= ~(_BV(PORTB7));
}
else
else if ( level == BACKLIGHT_LEVELS )
{
// Prevent backlight blink on lowest level
PORTB &= ~(_BV(PORTB7));
// Turn on PWM control of PB7
TCCR1A |= _BV(COM1C1);
// CHANNEL = level << OFFSET | 0x0FFF;
CHANNEL = ((1 << level) - 1);
// Set the brightness
CHANNEL = 0xFFFF;
}
else
{
// Prevent backlight blink on lowest level
PORTB &= ~(_BV(PORTB7));
// Turn on PWM control of PB7
TCCR1A |= _BV(COM1C1);
// Set the brightness
CHANNEL = 0xFFFF >> ((BACKLIGHT_LEVELS - level) * ((BACKLIGHT_LEVELS + 1) / 2));
}
}
9 changes: 3 additions & 6 deletions keyboard/planck/config.h
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Original file line number Diff line number Diff line change
Expand Up @@ -35,8 +35,7 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
//#define MATRIX_HAS_GHOST

/* number of backlight levels */
/* NOTE: this is the max value of 0..BACKLIGHT_LEVELS so really 16 levels. */
#define BACKLIGHT_LEVELS 15
#define BACKLIGHT_LEVELS 3

/* Set 0 if debouncing isn't needed */
#define DEBOUNCE 5
Expand All @@ -51,18 +50,16 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
)



/*
* Feature disable options
* These options are also useful to firmware size reduction.
*/

/* disable debug print */
//#define NO_DEBUG
#define NO_DEBUG

/* disable print */
//#define NO_PRINT
#define NO_PRINT

/* disable action features */
//#define NO_ACTION_LAYER
Expand Down