INVERT_MASK
manual &= ~INVERT_MASK;
manual &= ~INVERT_MASK;
manual &= ~INVERT_MASK;
th->pwm_inv[0] = read_reg(th, MANUAL_MODE[0]) & INVERT_MASK;
th->pwm_inv[1] = read_reg(th, MANUAL_MODE[1]) & INVERT_MASK;