diff options
| -rw-r--r-- | common/sleep_led.c | 29 |
1 files changed, 20 insertions, 9 deletions
diff --git a/common/sleep_led.c b/common/sleep_led.c index edf68c3523..dab3eb0f3c 100644 --- a/common/sleep_led.c +++ b/common/sleep_led.c @@ -45,29 +45,40 @@ void sleep_led_disable(void) TIMSK1 &= ~_BV(OCIE1A); } +void sleep_led_toggle(void) +{ + /* Disable Compare Match Interrupt */ + TIMSK1 ^= _BV(OCIE1A); +} + /* Breathing Sleep LED brighness(PWM On period) table - * (32[steps] * 8[duration]) / 64[PWM periods/s] = 4 second breath cycle + * (64[steps] * 4[duration]) / 64[PWM periods/s] = 4 second breath cycle + * + * http://www.wolframalpha.com/input/?i=%28sin%28+x%2F64*pi%29**8+*+255%2C+x%3D0+to+63 + * (0..63).each {|x| p ((sin(x/64.0*PI)**8)*255).to_i } */ -static const uint8_t breathing_table[32] PROGMEM = { - 0, 0, 0, 2, 9, 21, 37, 56, 78, 127, 151, 175, 197, 216, 232, 244, - 254, 244, 216, 197, 175, 151, 127, 78, 56, 37, 21, 9, 2, 0, 0, 0 +static const uint8_t breathing_table[64] PROGMEM = { +0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 4, 6, 10, +15, 23, 32, 44, 58, 74, 93, 113, 135, 157, 179, 199, 218, 233, 245, 252, +255, 252, 245, 233, 218, 199, 179, 157, 135, 113, 93, 74, 58, 44, 32, 23, +15, 10, 6, 4, 2, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; ISR(TIMER1_COMPA_vect) { /* Software PWM * timer:1111 1111 1111 1111 - * \----/\-/ \-------/+--- count(0-255) - * | +--------------- duration of step(8) - * +-------------------- index of step table(0-31) + * \_____/\/ \_______/____ count(0-255) + * \ \______________ duration of step(4) + * \__________________ index of step table(0-63) */ static union { uint16_t row; struct { uint8_t count:8; - uint8_t duration:3; - uint8_t index:5; + uint8_t duration:2; + uint8_t index:6; } pwm; } timer = { .row = 0 }; |