diff options
| author | Jack Humbert <jack.humb@gmail.com> | 2015-05-07 15:34:46 -0400 |
|---|---|---|
| committer | Jack Humbert <jack.humb@gmail.com> | 2015-05-07 15:34:46 -0400 |
| commit | cb3e499cc7dbff2607bc43cb05fc8c29a2eb9d30 (patch) | |
| tree | 7d2b519d63b058bd841b311a75ea077de12f1d7f /keyboard/planck/backlight.c | |
| parent | 1e0ae2936bfacc9d8048f64719c38b6f78790bb9 (diff) | |
backlight stuff
Diffstat (limited to 'keyboard/planck/backlight.c')
| -rw-r--r-- | keyboard/planck/backlight.c | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/keyboard/planck/backlight.c b/keyboard/planck/backlight.c index ee7e31ee9c..a560687ec0 100644 --- a/keyboard/planck/backlight.c +++ b/keyboard/planck/backlight.c @@ -2,9 +2,11 @@ #include <avr/io.h> #include "backlight.h" +#define CHANNEL OCR1C -void backlight_init_ports() +void backlight_init_ports(uint8_t level) { + // Setup PB7 as output and output low. DDRB |= (1<<7); PORTB &= ~(1<<7); @@ -24,9 +26,8 @@ void backlight_init_ports() TCCR1A = _BV(COM1C1) | _BV(WGM11); // = 0b00001010; TCCR1B = _BV(WGM13) | _BV(WGM12) | _BV(CS10); // = 0b00011001; - - // Default to zero duty cycle. - OCR1C = 0x0000; + + backlight_init(); } void backlight_set(uint8_t level) @@ -35,12 +36,14 @@ 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); } else { // Turn on PWM control of PB7 TCCR1A |= _BV(COM1C1); - OCR1C = level << 12 | 0x0FFF; + // CHANNEL = level << OFFSET | 0x0FFF; + CHANNEL = ((1 << level) - 1); } -} - +}
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