stm32f030f4p6 PWM

void init_Timer(void)

{

  TIM_TimeBaseInitTypeDef TIM_TimeBase_InitStructure;

  //Takt für Timer 14 einschalten

  RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM14, ENABLE);

  //Timer 14 konfigurieren

  TIM_TimeBase_InitStructure.TIM_ClockDivision  = TIM_CKD_DIV1;

  TIM_TimeBase_InitStructure.TIM_CounterMode = TIM_CounterMode_Up;

  TIM_TimeBase_InitStructure.TIM_Period = 100;          //Perioden 4/100=> 40kHz

  TIM_TimeBase_InitStructure.TIM_Prescaler = 12;          //Vorteiler 48/12 => 4MHz

  TIM_TimeBase_InitStructure.TIM_RepetitionCounter = 0;

  TIM_TimeBaseInit(TIM14, &TIM_TimeBase_InitStructure);

  //PWM konfigurieren

  TIM_OCInitTypeDef outputChannelInit;

  outputChannelInit.TIM_OCMode = TIM_OCMode_PWM1;

  outputChannelInit.TIM_OutputState = TIM_OutputState_Enable;

  outputChannelInit.TIM_OutputState = TIM_OutputNState_Enable;

  outputChannelInit.TIM_OCPolarity = TIM_OCPolarity_High;

  outputChannelInit.TIM_OCPolarity = TIM_OCNPolarity_High;

  outputChannelInit.TIM_OCIdleState = TIM_OCIdleState_Reset;

  outputChannelInit.TIM_OCNIdleState = TIM_OCNIdleState_Set;

  outputChannelInit.TIM_Pulse = 80;                  //80Pulse von 100 high

  TIM_OC1Init(TIM14, &outputChannelInit);

  TIM_OC1PreloadConfig(TIM14, TIM_OCPreload_Enable);

  GPIO_PinAFConfig(GPIOA, GPIO_PinSource7, GPIO_AF_TIM14);

  // Timer14 einschalten

  TIM_Cmd(TIM14, ENABLE);

}