小弟在使用tim1输出4路pwm的时候。出现了几个问题：1、唯独ch1没有输出；2、ch2、3、4，频率本该是1k，结果出来125hz。pwm代码如下：TIM1_DeInit();
CLK_PeripheralClockConfig(CLK_PERIPHERAL_TIMER1,ENABLE);
TIM1_TimeBaseInit(15,TIM1_COUNTERMODE_UP,1000,0);
TIM1_OC1Init(TIM1_OCMODE_PWM2,\
TIM1_OUTPUTSTATE_ENABLE,\
TIM1_OUTPUTNSTATE_DISABLE,\
Default_Pulse,\
TIM1_OCPOLARITY_LOW,\
TIM1_OCPOLARITY_HIGH,\
TIM1_OCIDLESTATE_SET,\
TIM1_OCIDLESTATE_RESET);
TIM1_OC1PreloadConfig(DISABLE);
TIM1_OC2Init(TIM1_OCMODE_PWM2,\
TIM1_OUTPUTSTATE_ENABLE,\
TIM1_OUTPUTNSTATE_DISABLE,\
Default_Pulse,\
TIM1_OCPOLARITY_LOW,\
TIM1_OCPOLARITY_HIGH,\
TIM1_OCIDLESTATE_SET,\
TIM1_OCIDLESTATE_RESET);
TIM1_OC2PreloadConfig(DISABLE);
TIM1_OC3Init(TIM1_OCMODE_PWM2,\
TIM1_OUTPUTSTATE_ENABLE,\
TIM1_OUTPUTNSTATE_DISABLE,\
Default_Pulse,\
TIM1_OCPOLARITY_LOW,\
TIM1_OCPOLARITY_HIGH,\
TIM1_OCIDLESTATE_SET,\
TIM1_OCIDLESTATE_RESET);
TIM1_OC3PreloadConfig(DISABLE);
TIM1_OC4Init(TIM1_OCMODE_PWM2,\
TIM1_OUTPUTSTATE_ENABLE,\
Default_Pulse,\
TIM1_OCPOLARITY_LOW,\
TIM1_OCIDLESTATE_SET);
TIM1_OC4PreloadConfig(DISABLE);
TIM1_CtrlPWMOutputs(ENABLE);
TIM1_Cmd(ENABLE);
现猜测可能是使用了uart2，导致PC1/TIM1_CH1/UART2_CK这个引脚出了什么问题，所以才没有输出。如果是这个原因的话，我该怎么设置，在哪设置改掉啊。（好像也不是改选项字节，因为在afr里面都没看到pc1）
各位大哥，给点建议吧，谢啦 |
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