定时器问题研究

hanhan0519

本人想实现这样一个效果：2 个（TIM1\TIM4)定时器，TIM1定时器计数值计满后（产生中断），同时触发TIM4，实现TIM4的值+1，当达到TIM4的比较值的时候，产生捕获中断。不知道如何实现，写了部分程序，调试能通过，也能跳中断，但是不是我要的效果。望高手指教！ 
TIM_TimeBaseStructInit(&TIM_TimeBaseStructure);
 TIM_TimeBaseStructure.TIM_Period = 8220;         
 TIM_TimeBaseStructure.TIM_Prescaler = 0x0;      
 TIM_TimeBaseStructure.TIM_ClockDivision = 0x0;   
 TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; 
 TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure);
 
 /* TIM1 TRGO selection */
 TIM_SelectOutputTrigger(TIM1, TIM_TRGOSource_Update);


 /* Time base configuration */
 TIM_TimeBaseStructure.TIM_Period = 63;
 TIM_TimeBaseStructure.TIM_Prescaler = 0;
 TIM_TimeBaseStructure.TIM_ClockDivision = 0;
 TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
 TIM_TimeBaseInit(TIM4, &TIM_TimeBaseStructure);

 /* TIM4 channel4 configuration in PWM mode */
 TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
 TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;             
 TIM_OCInitStructure.TIM_Pulse = 8;
 TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low;       
 TIM_OC4Init(TIM4, &TIM_OCInitStructure);

 TIM_SelectMasterSlaveMode(TIM1,TIM_MasterSlaveMode_Enable);// 主模式
 TIM_SelectSlaveMode(TIM4,TIM_SlaveMode_External1); //从模式上升沿作为计数脉冲
 TIM_ITRxExternalClockConfig(TIM4,TIM_TS_ITR0);   //TIME4触发来自TIME1 

 TIM_Cmd(TIM1,ENABLE);
 TIM_Cmd(TIM4,ENABLE);
 TIM_ITConfig(TIM1,TIM_IT_Update, ENABLE );
 TIM_ITConfig(TIM4,TIM_IT_CC4,ENABLE );

正点原子

这个你要好好研究下STM32参考手册.软件仿真来观察一下寄存器结果..再根据显现做修改.