Lesson 8: STM32F4 + Proteus PWM Example

A PWMLesson 8: STM32F4 + Proteus PWM ExampleHere, there is a very important registerLesson 8: STM32F4 + Proteus PWM ExampleLesson 8: STM32F4 + Proteus PWM Example2. Hardware SetupLesson 8: STM32F4 + Proteus PWM Example3. Software DevelopmentThe timer PWM configuration is slightly more complexThe configuration code is as follows

RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1,ENABLE);   // Enable TIM14 clock    RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA,ENABLE);                           GPIO_InitStructure.GPIO_Pin= GPIO_Pin_8;           // GPIOF9         GPIO_InitStructure.GPIO_Mode= GPIO_Mode_AF;        // Alternate function         GPIO_InitStructure.GPIO_Speed= GPIO_Speed_100MHz;    // Speed 100MHz         GPIO_InitStructure.GPIO_OType= GPIO_OType_PP;      // Push-pull output         GPIO_InitStructure.GPIO_PuPd= GPIO_PuPd_NOPULL;        // No pull-up         GPIO_Init(GPIOA,&GPIO_InitStructure);              // Initialize PF9         GPIO_PinAFConfig(GPIOA,GPIO_PinSource8,GPIO_AF_TIM1);// GPIOF9 multiplexed to timer 14             // GPIO_PinAFConfig(GPIOA,GPIO_PinSource8, GPIO_AF_TIM1);           TIM_TimeBaseStructure.TIM_Prescaler=84-1;  // Timer prescaler         TIM_TimeBaseStructure.TIM_CounterMode=TIM_CounterMode_Up;// Up counting mode         TIM_TimeBaseStructure.TIM_Period=500-1;   // Auto-reload value         TIM_TimeBaseStructure.TIM_ClockDivision=TIM_CKD_DIV1;                  TIM_TimeBaseInit(TIM1,&TIM_TimeBaseStructure);// Initialize timer 1                            TIM_OCInitStructure.TIM_OCMode =TIM_OCMode_PWM1;     TIM_OCInitStructure.TIM_OutputState= TIM_OutputState_Enable;          TIM_OCInitStructure.TIM_OCPolarity= TIM_OCPolarity_High;          // TIM_OCInitStructure.TIM_OCIdleState= TIM_OCIdleState_Set;         TIM_OCInitStructure.TIM_Pulse= 125;         TIM_OC1Init(TIM1,&TIM_OCInitStructure);  //         TIM_OC1PreloadConfig(TIM1,TIM_OCPreload_Enable);  // Enable TIM14 preload register on CCR1          TIM_ARRPreloadConfig(TIM1,ENABLE);// ARPE enable                   TIM_Cmd(TIM1,ENABLE);  // Enable TIM14         TIM_CtrlPWMOutputs(TIM1,ENABLE);

4. Test ResultsOpen PROTEUS, click run, and observe the waveform of PA8 on the oscilloscopeLesson 8: STM32F4 + Proteus PWM Example

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