F302的TIM1PWM输出，端口映射中怎么选择啊？
  *     @arg GPIO_AF_2:  COMP1_OUT, TIM1, TIM2, TIM3, TIM4, TIM8, TIM15, TIM16.
  *     @arg GPIO_AF_3:  COMP7_OUT, TIM8, TIM15, Touch, HRTIM.
  *     @arg GPIO_AF_4:  I2C1, I2C2, TIM1, TIM8, TIM16, TIM17.
  *     @arg GPIO_AF_5:  IR_OUT, I2S2, I2S3, SPI1, SPI2, TIM8, USART4, USART5
  *     @arg GPIO_AF_6:  IR_OUT, I2S2, I2S3, SPI2, SPI3, TIM1, TIM8
  *     @arg GPIO_AF_7:  AOP2_OUT, CAN, COMP3_OUT, COMP5_OUT, COMP6_OUT, USART1, 
  *                      USART2, USART3.
  *     @arg GPIO_AF_8:  COMP1_OUT, COMP2_OUT, COMP3_OUT, COMP4_OUT, COMP5_OUT, 
  *                      COMP6_OUT.
  *     @arg GPIO_AF_9:  AOP4_OUT, CAN, TIM1, TIM8, TIM15.
  *     @arg GPIO_AF_10: AOP1_OUT, AOP3_OUT, TIM2, TIM3, TIM4, TIM8, TIM17. 
  *     @arg GPIO_AF_11: TIM1, TIM8.
  *     @arg GPIO_AF_12: TIM1, HRTIM.
好多都有TIM1？？？？？？、