- vu16 CCR1_Val = 32768;
- vu16 CCR2_Val = 16384;
- vu16 CCR3_Val = 8192;
- vu16 CCR4_Val = 4096;
- void TIM_Configuration(void)
- {
- TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
- TIM_OCInitTypeDef TIM_OCInitStructure;
- RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);
- TIM_TimeBaseStructure.TIM_Period = 65535;
- TIM_TimeBaseStructure.TIM_Prescaler = 2;
- TIM_TimeBaseStructure.TIM_ClockDivision = 0;
- TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
- TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);
- TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_Toggle; //PWM模式2
- TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; //正向通道有效
- TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Disable;//反向通道无效
- TIM_OCInitStructure.TIM_Pulse = CCR1_Val; //占空时间
- TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low; //输出极性
- TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_High; //互补端的极性
- TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Set;
- TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCIdleState_Reset;
- TIM_OC1Init(TIM2,&TIM_OCInitStructure); //通道1
- TIM_OC1PreloadConfig(TIM2, TIM_OCPreload_Disable);
- TIM_OCInitStructure.TIM_Pulse = CCR2_Val; //占空时间
- TIM_OC2Init(TIM2,&TIM_OCInitStructure); //通道2
- TIM_OC2PreloadConfig(TIM2, TIM_OCPreload_Disable);
- TIM_OCInitStructure.TIM_Pulse = CCR3_Val; //占空时间
- TIM_OC3Init(TIM2,&TIM_OCInitStructure); //通道3
- TIM_OC3PreloadConfig(TIM2, TIM_OCPreload_Disable);
- TIM_OCInitStructure.TIM_Pulse = CCR4_Val; //占空时间
- TIM_OC4Init(TIM2,&TIM_OCInitStructure); //通道4
- TIM_OC4PreloadConfig(TIM2, TIM_OCPreload_Disable);
- TIM_Cmd(TIM2,ENABLE);
- //TIM_CtrlPWMOutputs(TIM2,ENABLE);
- TIM_ITConfig(TIM2, TIM_IT_CC1 | TIM_IT_CC2 | TIM_IT_CC3 | TIM_IT_CC4, ENABLE);
- }
- void GPIO_Configuration(void)
- {
- GPIO_InitTypeDef GPIO_InitStructure;
- RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
- RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
- RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);
- RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD, ENABLE);
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7;
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_OD; //开漏输出
- GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; //50M时钟速度
- GPIO_Init(GPIOA, &GPIO_InitStructure);
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0|GPIO_Pin_1;
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_OD; //开漏输出
- GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; //50M时钟速度
- GPIO_Init(GPIOB, &GPIO_InitStructure);
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0|GPIO_Pin_1;
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU; //上拉输入
- GPIO_Init(GPIOA, &GPIO_InitStructure);
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13;
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU; //上拉输入
- GPIO_Init(GPIOC, &GPIO_InitStructure);
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5;
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU; //上拉输入
- GPIO_Init(GPIOB, &GPIO_InitStructure);
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_2 | GPIO_Pin_3;
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
- GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
- GPIO_Init(GPIOA, &GPIO_InitStructure);
- }
- void NVIC_Configuration(void)
- {
- NVIC_InitTypeDef NVIC_InitStructure;
- NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
- NVIC_InitStructure.NVIC_IRQChannel=TIM2_IRQn;
- NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=0;
- NVIC_InitStructure.NVIC_IRQChannelSubPriority=1;
- NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;
- NVIC_Init(&NVIC_InitStructure);
- }
- u16 capture = 0;
- extern vu16 CCR1_Val;
- extern vu16 CCR2_Val;
- extern vu16 CCR3_Val;
- extern vu16 CCR4_Val;
- void TIM2_IRQHandler(void)
- {
- if (TIM_GetITStatus(TIM2, TIM_IT_CC1) != RESET)
- {
- TIM_ClearITPendingBit(TIM2, TIM_IT_CC1 );
- capture = TIM_GetCapture1(TIM2);
- TIM_SetCompare1(TIM2, capture + CCR1_Val );
- }
- if (TIM_GetITStatus(TIM2, TIM_IT_CC2) != RESET)
- {
- TIM_ClearITPendingBit(TIM2, TIM_IT_CC2);
- capture = TIM_GetCapture2(TIM2);
- TIM_SetCompare2(TIM2, capture + CCR2_Val);
- }
- if (TIM_GetITStatus(TIM2, TIM_IT_CC3) != RESET)
- {
- TIM_ClearITPendingBit(TIM2, TIM_IT_CC3);
- capture = TIM_GetCapture3(TIM2);
- TIM_SetCompare3(TIM2, capture + CCR3_Val);
- }
- if (TIM_GetITStatus(TIM2, TIM_IT_CC4) != RESET)
- {
- TIM_ClearITPendingBit(TIM2, TIM_IT_CC4);
- capture = TIM_GetCapture4(TIM2);
- TIM_SetCompare4(TIM2, capture + CCR4_Val);
- }
- }
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