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- #include "bsp_AdvanceTim.h"
- uint16_t Counter_sine=0;
- uint16_t Duty_Cycle_sinewavetable[9]={1,2,3,4,5,6,7,8,9};
- //extern uint16_t Counter_sine;
- //extern uint16_t Duty_Cycle_sinewavetable[9];
- //pwm输出GPIO配置
- static void ADVANCE_TIM_GPIO_Config(void)
- {
- GPIO_InitTypeDef GPIO_InitStructure;
- // 输出比较通道 GPIO1 初始化
- RCC_APB2PeriphClockCmd(ADVANCE_TIM_CH1_GPIO_CLK, ENABLE);
- GPIO_InitStructure.GPIO_Pin = ADVANCE_TIM_CH1_PIN;
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
- GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
- GPIO_Init(ADVANCE_TIM_CH1_PORT, &GPIO_InitStructure);
- // 输出比较通道互补通道 GPIO1 初始化
- RCC_APB2PeriphClockCmd(ADVANCE_TIM_CH1N_GPIO_CLK, ENABLE);
- GPIO_InitStructure.GPIO_Pin = ADVANCE_TIM_CH1N_PIN;
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
- GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
- GPIO_Init(ADVANCE_TIM_CH1N_PORT, &GPIO_InitStructure);
- // 输出比较通道刹车通道 GPIO1 初始化
- RCC_APB2PeriphClockCmd(ADVANCE_TIM_BKIN_GPIO_CLK, ENABLE);
- GPIO_InitStructure.GPIO_Pin = ADVANCE_TIM_BKIN_PIN;
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
- GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
- GPIO_Init(ADVANCE_TIM_BKIN_PORT, &GPIO_InitStructure);
- // BKIN引脚默认先输出低电平
- GPIO_ResetBits(ADVANCE_TIM_BKIN_PORT,ADVANCE_TIM_BKIN_PIN);
- }
- // 中断优先级配置
- static void ADVANCE_TIM_NVIC_Config(void)
- {
- NVIC_InitTypeDef NVIC_InitStructure;
- // 设置中断组为0
- NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);
- // 设置中断来源
- NVIC_InitStructure.NVIC_IRQChannel = ADVANCE_TIM_IRQ ;
- // 设置主优先级为 0
- NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
- // 设置抢占优先级为3
- NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3;
- NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
- NVIC_Init(&NVIC_InitStructure);
- }
- static void ADVANCE_TIM_Mode_Config(void)
- {
- TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
- // 开启定时器时钟,即内部时钟CK_INT=72M
- ADVANCE_TIM_APBxClock_FUN(ADVANCE_TIM_CLK, ENABLE);
- // 自动重装载寄存器的值,累计TIM_Period+1个频率后产生一个更新或者中断
- TIM_TimeBaseStructure.TIM_Period=ADVANCE_TIM_Period;
- // 时钟预分频数
- TIM_TimeBaseStructure.TIM_Prescaler= ADVANCE_TIM_Prescaler;
- // 时钟分频因子 ,没用到不用管
- TIM_TimeBaseStructure.TIM_ClockDivision=TIM_CKD_DIV1;
- // 计数器计数模式,设置为向上计数
- TIM_TimeBaseStructure.TIM_CounterMode=TIM_CounterMode_Up;
- // 重复计数器的值,没用到不用管
- TIM_TimeBaseStructure.TIM_RepetitionCounter=0;
- // 初始化定时器
- TIM_TimeBaseInit(ADVANCE_TIM, &TIM_TimeBaseStructure);
-
- // 清除计数器中断标志位
- TIM_ClearFlag(ADVANCE_TIM, TIM_FLAG_Update);
-
- // 开启计数器中断
- TIM_ITConfig(ADVANCE_TIM,TIM_IT_Update,ENABLE);
-
- // 使能计数器
- TIM_Cmd(ADVANCE_TIM, ENABLE);
-
-
- /*--------------------输出比较结构体初始化-------------------*/
- TIM_OCInitTypeDef TIM_OCInitStructure;
- // 配置为PWM模式1
- TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
- // 输出使能
- TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
- // 互补输出使能
- TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable;
- // 设置占空比大小
- TIM_OCInitStructure.TIM_Pulse = Duty_Cycle_sinewavetable[Counter_sine];
- // 输出通道电平极性配置
- TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
- // 互补输出通道电平极性配置
- TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_High;
- // 输出通道空闲电平极性配置
- TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Set;
- // 互补输出通道空闲电平极性配置
- TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCNIdleState_Reset;
- TIM_OC1Init(ADVANCE_TIM, &TIM_OCInitStructure);
- TIM_OC1PreloadConfig(ADVANCE_TIM, TIM_OCPreload_Enable);
- /*-------------------刹车和死区结构体初始化-------------------*/
- // 有关刹车和死区结构体的成员具体可参考BDTR寄存器的描述
- TIM_BDTRInitTypeDef TIM_BDTRInitStructure;
- TIM_BDTRInitStructure.TIM_OSSRState = TIM_OSSRState_Enable;
- TIM_BDTRInitStructure.TIM_OSSIState = TIM_OSSIState_Enable;
- TIM_BDTRInitStructure.TIM_LOCKLevel = TIM_LOCKLevel_1;
- // 输出比较信号死区时间配置,具体如何计算可参考 BDTR:UTG[7:0]的描述
- // 这里配置的死区时间为152ns
- TIM_BDTRInitStructure.TIM_DeadTime = 11;
- TIM_BDTRInitStructure.TIM_Break = TIM_Break_Enable;
- // 当BKIN引脚检测到高电平的时候,输出比较信号被禁止,就好像是刹车一样
- TIM_BDTRInitStructure.TIM_BreakPolarity = TIM_BreakPolarity_High;
- TIM_BDTRInitStructure.TIM_AutomaticOutput = TIM_AutomaticOutput_Enable;
- TIM_BDTRConfig(ADVANCE_TIM, &TIM_BDTRInitStructure);
-
- // 使能计数器
- TIM_Cmd(ADVANCE_TIM, ENABLE);
- // 主输出使能,当使用的是通用定时器时,这句不需要
- TIM_CtrlPWMOutputs(ADVANCE_TIM, ENABLE);
- }
- void ADVANCE_TIM_Init(void)
- {
- ADVANCE_TIM_GPIO_Config();
- ADVANCE_TIM_NVIC_Config();
- ADVANCE_TIM_Mode_Config();
- }
- /*********************************************END OF FILE**********************/
- 我想知道这样配置进入中断好使为什么PWM互补输出不好使了?
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