PCA9685_PWM_TICKS
error = pcapwm_program_channel(sc, chan, 0, PCA9685_PWM_TICKS);
if (on_tick & PCA9685_PWM_TICKS) {
} else if (off_tick & PCA9685_PWM_TICKS) {
signed_off_tick += PCA9685_PWM_TICKS;
PCA9685_PWM_TICKS);
(PCA9685_PWM_TICKS * pwm_freq);
off_tick = PCA9685_PWM_TICKS;
on_tick = PCA9685_PWM_TICKS;
PCA9685_PWM_TICKS * (uint64_t)conf->duty_cycle;
if (ticks >= PCA9685_PWM_TICKS) {
ticks = PCA9685_PWM_TICKS - 1;