How to config STM32CubeMX 4.8.0, to make this PWM config Code ?

[wjandsq]

Posted on June 14, 2015 at 14:13

uint32_t SystemCoreClock = 168000000;

uint32_t TIM4_PWM_frequency;

uint16_t TIM4_CCR1_SRC[1024];

uint16_t DMA1_TIM4_Pulse_Number = 10;

/**  * @brief  Configure the TIM4 CH1 as PWM out.  * @param  None  * @retval None  * made by wjandsq@163.com  */void TIM4_PWM_DMA_Config(void){  GPIO_InitTypeDef GPIO_InitStruct;  DMA_InitTypeDef DMA_InitStructure;  NVIC_InitTypeDef NVIC_InitStructure;  TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;  TIM_OCInitTypeDef  TIM_OCInitStructure;  uint16_t uhTimerPeriod = 0;  uint16_t i;    TIM4_PWM_frequency = 500000; // 500KHz  uhTimerPeriod = (uint16_t) ((SystemCoreClock /2) / TIM4_PWM_frequency) - 1;  TIM4_CCR1_SRC[0] = uhTimerPeriod / 2;    for(i = 1; i < 1024; ++i){    TIM4_CCR1_SRC[i] = TIM4_CCR1_SRC[0];  }      RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM4, ENABLE);&sharpifdef USE_PB6_PWM  // TIM4_CH1_PWM: USE_PB6  RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB, ENABLE);    /* GPIOB Configuration: TIM4 CH1 (PB6) */  GPIO_InitStruct.GPIO_Pin = GPIO_Pin_6;  GPIO_InitStruct.GPIO_Mode = GPIO_Mode_AF;  GPIO_InitStruct.GPIO_OType = GPIO_OType_PP;  GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_DOWN;  GPIO_InitStruct.GPIO_Speed = GPIO_Speed_100MHz;  GPIO_Init(GPIOB, &GPIO_InitStruct);  /* Connect TIM4 pins to AF2 */    GPIO_PinAFConfig(GPIOB, GPIO_PinSource6, GPIO_AF_TIM4);&sharpelse  // TIM4_CH1_PWM: USE_PD12  /** TIM4 GPIO Configuration     PD12 ------> TIM4_CH1    PD13 ------> TIM4_CH2    PD14 ------> TIM4_CH3    PD15 ------> TIM4_CH4  */  RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOD, ENABLE);    /* GPIOB Configuration: TIM4 CH1 (PD12) */  GPIO_InitStruct.GPIO_Pin = GPIO_Pin_12;  GPIO_InitStruct.GPIO_Mode = GPIO_Mode_AF;  GPIO_InitStruct.GPIO_OType = GPIO_OType_PP;  GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_DOWN;  GPIO_InitStruct.GPIO_Speed = GPIO_Speed_100MHz;  GPIO_Init(GPIOD, &GPIO_InitStruct);  /* Configure GPIO pin alternate function */  GPIO_PinAFConfig(GPIOD, GPIO_PinSource12, GPIO_AF_TIM4);&sharpendif  RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA1 , ENABLE);  DMA_DeInit(DMA1_Stream6);  DMA_InitStructure.DMA_Channel = DMA_Channel_2;    DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t) &(TIM4->CCR1);  DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t) TIM4_CCR1_SRC;  DMA_InitStructure.DMA_DIR = DMA_DIR_MemoryToPeripheral;  DMA_InitStructure.DMA_BufferSize = DMA1_TIM4_Pulse;  DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;  DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;  DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;  DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;  DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;  DMA_InitStructure.DMA_Priority = DMA_Priority_High;  DMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Disable;           DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_HalfFull;  DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single;  DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single;  DMA_Init(DMA1_Stream6, &DMA_InitStructure);    /* TIM4_CCR1 DMA1_Stream6 Channel 2 */  DMA_ITConfig(DMA1_Stream6, DMA_IT_TC, ENABLE);  NVIC_InitStructure.NVIC_IRQChannel = TIM4_IRQn;  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2;  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;  NVIC_Init(&NVIC_InitStructure);    NVIC_InitStructure.NVIC_IRQChannel = DMA1_Stream6_IRQn;  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;  NVIC_Init(&NVIC_InitStructure);  /* Time base configuration */  TIM_TimeBaseStructure.TIM_Period = uhTimerPeriod;  TIM_TimeBaseStructure.TIM_Prescaler = 0;  TIM_TimeBaseStructure.TIM_ClockDivision = 0;  TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;  TIM_TimeBaseInit(TIM4, &TIM_TimeBaseStructure);  TIM4->CNT = 0;   /* PWM1 Mode configuration: Channel1 */  TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;  TIM_OCInitStructure.TIM_Pulse = TIM4_CCR1_SRC[0];  TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low;  TIM_OC1Init(TIM4, &TIM_OCInitStructure);  TIM_OC1PreloadConfig(TIM4, TIM_OCPreload_Enable);  TIM_ARRPreloadConfig(TIM4, ENABLE);//  TIM_Cmd(TIM4, ENABLE);  TIM_GenerateEvent(TIM4, TIM_EventSource_Update);  /* TIM4 Update DMA Request enable */  TIM_DMACmd(TIM4, TIM_DMA_Update, ENABLE);    TIM_ITConfig(TIM4, TIM_IT_Update, ENABLE);}void main(){  ..

  TIM4_PWM_DMA_Config();

  while(1){    // for send 10 Pulse    TIM4->CNT = 0;    TIM4->CR1 &= ~TIM_CR1_OPM;    TIM4->CR1 |= TIM_CR1_CEN;    DMA1_Stream2->NDTR = DMA1_TIM4_Pulse_Number;    DMA_Cmd(DMA1_Stream2, ENABLE);  }}

/**

  * @brief  This function handles DMA1_Stream4 global interrupt request.  * @param  None  * @retval None  *//**  * @brief  This function handles DMA1_Stream0 global interrupt request.  * @param  None  * @retval None  */void DMA1_Stream6_IRQHandler(void){  if (DMA_GetITStatus(DMA1_Stream6, DMA_IT_TCIF6) != RESET) {    DMA_Cmd(DMA1_Stream6, DISABLE);    DMA_ClearITPendingBit(DMA1_Stream6, DMA_IT_TCIF6);    TIM4->CR1 |= TIM_CR1_OPM; // End PWM  }} #tim4_ch1_pwm_dma-stm32cubemx

[chrif]

Posted on June 23, 2015 at 17:05 Hi, you van refer to the User manual UM1718 under Help->About of the CubeMx interface or under the link

http://www.st.com/st-web-ui/static/active/en/resource/technical/document/user_manual/DM00104712.pdf