diff options
Diffstat (limited to 'quantum/backlight/backlight_chibios.c')
| -rw-r--r-- | quantum/backlight/backlight_chibios.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/quantum/backlight/backlight_chibios.c b/quantum/backlight/backlight_chibios.c index 7c6edd10d6..e8f9e70f78 100644 --- a/quantum/backlight/backlight_chibios.c +++ b/quantum/backlight/backlight_chibios.c @@ -53,14 +53,14 @@ static PWMConfig pwmCFG = {0xFFFF, /* PWM clock frequency */ // See http://jared.geek.nz/2013/feb/linear-led-pwm static uint16_t cie_lightness(uint16_t v) { - if (v <= 5243) // if below 8% of max - return v / 9; // same as dividing by 900% + if (v <= 5243) // if below 8% of max + return v / 9; // same as dividing by 900% else { - uint32_t y = (((uint32_t)v + 10486) << 8) / (10486 + 0xFFFFUL); // add 16% of max and compare + uint32_t y = (((uint32_t)v + 10486) << 8) / (10486 + 0xFFFFUL); // add 16% of max and compare // to get a useful result with integer division, we shift left in the expression above // and revert what we've done again after squaring. y = y * y * y >> 8; - if (y > 0xFFFFUL) // prevent overflow + if (y > 0xFFFFUL) // prevent overflow return 0xFFFFU; else return (uint16_t)y; @@ -117,7 +117,9 @@ static const uint8_t breathing_table[BREATHING_STEPS] = {0, 0, 0, 0, 0, 0, 0, 0, void breathing_callback(PWMDriver *pwmp); -bool is_breathing(void) { return pwmCFG.callback != NULL; } +bool is_breathing(void) { + return pwmCFG.callback != NULL; +} void breathing_enable(void) { pwmCFG.callback = breathing_callback; @@ -133,7 +135,9 @@ void breathing_disable(void) { } // Use this before the cie_lightness function. -static inline uint16_t scale_backlight(uint16_t v) { return v / BACKLIGHT_LEVELS * get_backlight_level(); } +static inline uint16_t scale_backlight(uint16_t v) { + return v / BACKLIGHT_LEVELS * get_backlight_level(); +} void breathing_callback(PWMDriver *pwmp) { uint8_t breathing_period = get_breathing_period(); |