我在寫入TIM_Cmd(TIM4,DISABLE);   TIM_CtrlPWMOutputs(TIM4,DISABLE);程序之后，為什么還有PWM波輸出呢？我的主函數(shù)是這樣的：

RCC_Config();                  

PWM_GPIO_Config();  EXTI_GPIO_Config();              

EXTI_Config();  

NVIC_Config();  

EXTI->IMR&=~(1<<1);  

delay_ms(2);   

TIM_Cmd(TIM4,DISABLE);  

TIM_CtrlPWMOutputs(TIM4,DISABLE);   

EXTI->IMR|=1<<1;  

RST_GPIO_Config();   

while(1);