STM32F030R8 TIM17 PWM COMPLEMENT

[metin]

Posted on April 04, 2014 at 13:47

Dear friends,

We can not produce N Polarity for TIM17 Complement PWM in STM32F030R8. But P Polarity channel (other one) is OK. I need your helps.  // TIM17 clock enable  RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM17, ENABLE);  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB | RCC_AHBPeriph_GPIOC, ENABLE);   GPIO_InitTypeDef GPIO_InitStructure;   GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7 | GPIO_Pin_9 ;     GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;   GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;   GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;   GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;   GPIO_Init(GPIOB, &GPIO_InitStructure);  GPIO_PinAFConfig(GPIOB, GPIO_PinSource7, GPIO_AF_2);  GPIO_PinAFConfig(GPIOB, GPIO_PinSource9, GPIO_AF_2);

   PrescalerValue_ = (uint16_t) (SystemCoreClock / 4000000) - 1;   // Deger buyuk, prescaler gerekli.

   TIM_TimeBaseStructur.TIM_Period = 40000;        // 100Hz   TIM_TimeBaseStructur.TIM_Prescaler = PrescalerValue_;   TIM_TimeBaseStructur.TIM_ClockDivision = 0;   TIM_TimeBaseStructur.TIM_CounterMode = TIM_CounterMode_Up;   TIM_TimeBaseInit(TIM17, &TIM_TimeBaseStructur);

  TIM_OCInitStructur.TIM_OCMode = TIM_OCMode_PWM2;

  TIM_OCInitStructur.TIM_OutputState = TIM_OutputState_Enable;  TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable;   TIM_OCInitStructur.TIM_Pulse = 20000;             TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;   TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_High;   TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Set;   TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCIdleState_Reset;   TIM_OC1Init(TIM17, &TIM_OCInitStructur);    // Automatic Output enable, Break, dead time and lock configuration   TIM_BDTRInitStructure.TIM_OSSRState = TIM_OSSRState_Enable;   TIM_BDTRInitStructure.TIM_OSSIState = TIM_OSSIState_Enable;   TIM_BDTRInitStructure.TIM_LOCKLevel = TIM_LOCKLevel_1;   TIM_BDTRInitStructure.TIM_DeadTime = 20;   TIM_BDTRInitStructure.TIM_Break = TIM_Break_Disable;   TIM_BDTRInitStructure.TIM_BreakPolarity = TIM_BreakPolarity_Low;   TIM_BDTRInitStructure.TIM_AutomaticOutput = TIM_AutomaticOutput_Enable;   TIM_BDTRConfig(TIM17, &TIM_BDTRInitStructure);    TIM_CCPreloadControl(TIM17, ENABLE);   TIM_ARRPreloadConfig(TIM17, ENABLE);  TIM_Cmd(TIM17, ENABLE);       //TIM17 enable counter  TIM_CtrlPWMOutputs(TIM17, ENABLE); //Enable the TIM Main Output / TIMx->BDTR |= TIM_BDTR_MOE;