PWM_V2_CTRL_ENABLE
if (HREAD4(sc, PWM_V2_CTRL) & PWM_V2_CTRL_ENABLE)
HCLR4(sc, PWM_V2_CTRL, PWM_V2_CTRL_ENABLE | PWM_V2_CTRL_CONTINUOUS);
HSET4(sc, PWM_V2_CTRL, PWM_V2_CTRL_ENABLE | PWM_V2_CTRL_CONTINUOUS);