FR8003A的PMU_PWM怎么使用 我这边按如下配置没有正确输出

[liuw3663]

	str_PWMParam_t		PWMParam;
	PWMParam.Port = GPIO_PORT_C;
	PWMParam.Pin  = GPIO_BIT_2;
	PWMParam.Period = 99;
	PWMParam.HighCount = 50;
	PWMParam.Invert = 0;
	pmu_pwm_config(PWM_2, PWMParam);
	pmu_pwm_cycle_start(PWM_2);

	PWMParam.Port = GPIO_PORT_C;
	PWMParam.Pin  = GPIO_BIT_3;
	PWMParam.Period = 99;
	PWMParam.HighCount = 50;
	PWMParam.Invert = 0;
	pmu_pwm_config(PWM_3, PWMParam);
	pmu_pwm_cycle_start(PWM_3);