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- void TIM8_PWM_Init(u16 arr,u16 psc)
- {
- GPIO_InitTypeDef GPIO_InitStructure;
- TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
- TIM_OCInitTypeDef TIM_OCInitStructure;
- RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM8, ENABLE);//
- RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC , ENABLE);
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6|GPIO_Pin_7|GPIO_Pin_8|GPIO_Pin_9; //TIM_CH1/2/3/4
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
- GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
- GPIO_Init(GPIOC, &GPIO_InitStructure);
-
- TIM_TimeBaseStructure.TIM_Period = arr;
- TIM_TimeBaseStructure.TIM_Prescaler =psc;
- TIM_TimeBaseStructure.TIM_ClockDivision = 0;
- TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
- TIM_TimeBaseInit(TIM8, &TIM_TimeBaseStructure);
-
- TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM2;
- TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
- TIM_OCInitStructure.TIM_Pulse = 0;
- TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
- TIM_OC1Init(TIM8, &TIM_OCInitStructure);
- TIM_OC2Init(TIM8, &TIM_OCInitStructure);
- TIM_OC3Init(TIM8, &TIM_OCInitStructure);
- TIM_OC4Init(TIM8, &TIM_OCInitStructure);
-
- TIM_CtrlPWMOutputs(TIM8,ENABLE);
-
- TIM_OC1PreloadConfig(TIM8, TIM_OCPreload_Enable);
- TIM_OC2PreloadConfig(TIM8, TIM_OCPreload_Enable);
- TIM_OC3PreloadConfig(TIM8, TIM_OCPreload_Enable);
- TIM_OC4PreloadConfig(TIM8, TIM_OCPreload_Enable);
- TIM_ARRPreloadConfig(TIM8, ENABLE);
-
- TIM_Cmd(TIM8, ENABLE);
-
- }
- void TIM3_PWM_Init(u16 arr,u16 psc)
- {
- GPIO_InitTypeDef GPIO_InitStructure;
- TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
- TIM_OCInitTypeDef TIM_OCInitStructure;
- RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);//
- RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA , ENABLE);
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6|GPIO_Pin_7; //TIM_CH1/2
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
- GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
- GPIO_Init(GPIOA, &GPIO_InitStructure);
-
- TIM_TimeBaseStructure.TIM_Period = arr;
- TIM_TimeBaseStructure.TIM_Prescaler =psc;
- TIM_TimeBaseStructure.TIM_ClockDivision = 0;
- TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
- TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure);
-
- TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM2;
- TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
- TIM_OCInitStructure.TIM_Pulse = 0;
- TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
- TIM_OC1Init(TIM3, &TIM_OCInitStructure);
- TIM_OC2Init(TIM3, &TIM_OCInitStructure);
-
- TIM_CtrlPWMOutputs(TIM3,ENABLE);
-
- TIM_OC1PreloadConfig(TIM3, TIM_OCPreload_Enable);
- TIM_OC2PreloadConfig(TIM3, TIM_OCPreload_Enable);
-
- TIM_ARRPreloadConfig(TIM3, ENABLE);
-
- TIM_Cmd(TIM3, ENABLE);
-
- }
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