[mw_shl_code=c,true] TIM_OCInitStructure.TIM_OCMode=TIM_OCMode_PWM1;
TIM_OCInitStructure.TIM_OCPolarity=TIM_OCPolarity_Low;
TIM_OCInitStructure.TIM_OutputState=TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_Pulse=300;
TIM_OC1Init(TIM3,&TIM_OCInitStructure);
TIM_OC1PreloadConfig(TIM3, TIM_OCPreload_Enable);
TIM_OCInitStructure.TIM_Pulse=10;
TIM_OC2Init(TIM3,&TIM_OCInitStructure);
TIM_OC2PreloadConfig(TIM3, TIM_OCPreload_Enable);
TIM_OCInitStructure.TIM_Pulse=15;
TIM_OC3Init(TIM3,&TIM_OCInitStructure);
TIM_OC3PreloadConfig(TIM3, TIM_OCPreload_Enable);
TIM_OCInitStructure.TIM_Pulse=10;
TIM_OC4Init(TIM3,&TIM_OCInitStructure);
TIM_OC4PreloadConfig(TIM3, TIM_OCPreload_Enable);
TIM_Cmd(TIM3, ENABLE);[/mw_shl_code]
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1,IO设置不对。
2,定时器配置不对。
综上,估计你是问题1比较多点。
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