475 lines
20 KiB
C
475 lines
20 KiB
C
#include "timer.h"
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//Input the capture flag for channel 1,
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//the capture flag for the higher bits, and the overflow flag for the lower 6 bits
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//通道1输入捕获标志，高两位做捕获标志，低6位做溢出标志
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u8 TIM8CH1_CAPTURE_STA = 0;
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u16 TIM8CH1_CAPTURE_UPVAL;
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u16 TIM8CH1_CAPTURE_DOWNVAL;
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//Input the capture flag for channel 2,
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//the capture flag for the higher bits, and the overflow flag for the lower 6 bits
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//通道2输入捕获标志，高两位做捕获标志，低6位做溢出标志
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u8 TIM8CH2_CAPTURE_STA = 0;
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u16 TIM8CH2_CAPTURE_UPVAL;
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u16 TIM8CH2_CAPTURE_DOWNVAL;
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//Input the capture flag for channel 3,
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//the capture flag for the higher bits, and the overflow flag for the lower 6 bits
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//通道3输入捕获标志，高两位做捕获标志，低6位做溢出标志
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u8 TIM8CH3_CAPTURE_STA = 0;
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u16 TIM8CH3_CAPTURE_UPVAL;
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u16 TIM8CH3_CAPTURE_DOWNVAL;
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//Input the capture flag for channel 4,
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//the capture flag for the higher bits, and the overflow flag for the lower 6 bits
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//通道4输入捕获标志，高两位做捕获标志，低6位做溢出标志
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u8 TIM8CH4_CAPTURE_STA = 0;
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u16 TIM8CH4_CAPTURE_UPVAL;
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u16 TIM8CH4_CAPTURE_DOWNVAL;
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u32 TIM8_T1;
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u32 TIM8_T2;
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u32 TIM8_T3;
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u32 TIM8_T4;
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//Variables related to remote control acquisition of model aircraft
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//航模遥控采集相关变量
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int Remoter_Ch1=1500,Remoter_Ch2=1500,Remoter_Ch3=1500,Remoter_Ch4=1500;
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//Model aircraft remote control receiver variable
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//航模遥控接收变量
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int L_Remoter_Ch1=1500,L_Remoter_Ch2=1500,L_Remoter_Ch3=1500,L_Remoter_Ch4=1500;
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/**************************************************************************
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Function: Model aircraft remote control initialization function, timer 1 input capture initialization
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Input : arr: Automatic reload value, psc: clock preset frequency
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Output : none
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函数功能：航模遥控初始化函数，定时器1输入捕获初始化
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入口参数：arr：自动重装值，psc：时钟预分频数
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返 回 值：无
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**************************************************************************/
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void TIM8_Cap_Init(u16 arr, u16 psc)
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{
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GPIO_InitTypeDef GPIO_InitStructure;
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TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
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NVIC_InitTypeDef NVIC_InitStructure;
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TIM_ICInitTypeDef TIM_ICInitStructure;
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM8,ENABLE); //TIM1时钟使能
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RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOC, ENABLE); //使能PORTE时钟
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7 | GPIO_Pin_8 | GPIO_Pin_9; //GPIOC
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;//复用功能
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz; //速度100MHz
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GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; //推挽复用输出
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GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_DOWN; //下拉
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GPIO_Init(GPIOC,&GPIO_InitStructure);
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GPIO_PinAFConfig(GPIOC,GPIO_PinSource6,GPIO_AF_TIM8);
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GPIO_PinAFConfig(GPIOC,GPIO_PinSource7,GPIO_AF_TIM8);
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GPIO_PinAFConfig(GPIOC,GPIO_PinSource8,GPIO_AF_TIM8);
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GPIO_PinAFConfig(GPIOC,GPIO_PinSource9,GPIO_AF_TIM8);
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/*** Initialize timer 1 || 初始化定时器1 ***/
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//Set the counter to automatically reload //设定计数器自动重装值
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TIM_TimeBaseStructure.TIM_Period = arr;
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//Pre-divider //预分频器
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TIM_TimeBaseStructure.TIM_Prescaler = psc;
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//Set the clock split: TDTS = Tck_tim //设置时钟分割:TDTS = Tck_tim
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TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;
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//TIM up count mode //TIM向上计数模式
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TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
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//Initializes the timebase unit for TIMX based on the parameter specified in TIM_TimeBaseInitStruct
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//根据TIM_TimeBaseInitStruct中指定的参数初始化TIMx的时间基数单位
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TIM_TimeBaseInit(TIM8, &TIM_TimeBaseStructure);
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/*** 初始化TIM1输入捕获参数，通道1 || Initialize TIM1 for the capture parameter, channel 1 ***/
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//Select input //选择输入端
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TIM_ICInitStructure.TIM_Channel = TIM_Channel_1;
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//Rising edge capture //上升沿捕获
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TIM_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Rising;
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TIM_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI;
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//Configure input frequency division, regardless of frequency //配置输入分频,不分频
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TIM_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1;
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//IC1F=0000 Configure input filter //配置输入滤波器
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TIM_ICInitStructure.TIM_ICFilter = 0x0F;
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TIM_ICInit(TIM8, &TIM_ICInitStructure);
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/*** 初始化TIM1输入捕获参数，通道2 || Initialize TIM1 for the capture parameter, channel 2 ***/
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//CC1S=01 Select input //选择输入端
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TIM_ICInitStructure.TIM_Channel = TIM_Channel_2;
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//Rising edge capture //上升沿捕获
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TIM_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Rising;
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TIM_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI;
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//Configure input frequency division, regardless of frequency //配置输入分频,不分频
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TIM_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1;
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TIM_ICInitStructure.TIM_ICFilter = 0x00; //IC1F=0000 配置输入滤波器
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TIM_ICInit(TIM8, &TIM_ICInitStructure);
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/*** 初始化TIM1输入捕获参数，通道3 || Initialize TIM1 for the capture parameter, channel 3 ***/
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//Select input //选择输入端
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TIM_ICInitStructure.TIM_Channel = TIM_Channel_3;
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//Rising edge capture //上升沿捕获
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TIM_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Rising;
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TIM_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI;
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//Configure input frequency division, regardless of frequency //配置输入分频,不分频
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TIM_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1;
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//IC1F=0000 Configure input filter //配置输入滤波器，不滤波
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TIM_ICInitStructure.TIM_ICFilter = 0x00;
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TIM_ICInit(TIM8, &TIM_ICInitStructure);
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/*** 初始化TIM1输入捕获参数，通道4 || Initialize TIM1 for the capture parameter, channel 4 ***/
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//Select input //选择输入端
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TIM_ICInitStructure.TIM_Channel = TIM_Channel_4;
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//Rising edge capture //上升沿捕获
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TIM_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Rising;
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TIM_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI;
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//Configure input frequency division, regardless of frequency //配置输入分频,不分频
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TIM_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1;
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//IC1F=0000 Configure input filter //配置输入滤波器，不滤波
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TIM_ICInitStructure.TIM_ICFilter = 0x00;
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TIM_ICInit(TIM8, &TIM_ICInitStructure);
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/*** interrupt packet initialization || 中断分组初始化 ***/
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//TIM1 interrupts //TIM1中断
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NVIC_InitStructure.NVIC_IRQChannel = TIM8_CC_IRQn;
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//Preempt priority 0 //先占优先级0级
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NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2;
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//Level 0 from priority //从优先级0级
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NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2;
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//IRQ channels are enabled //IRQ通道被使能
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NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
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//Initializes the peripheral NVIC register according to the parameters specified in NVIC_InitStruct
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//根据NVIC_InitStruct中指定的参数初始化外设NVIC寄存器
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NVIC_Init(&NVIC_InitStructure);
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//Allow CC1IE,CC2IE,CC3IE,CC4IE to catch interrupts, not allowed update_interrupts
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//不允许更新中断，允许CC1IE,CC2IE,CC3IE,CC4IE捕获中断
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TIM_ITConfig(TIM8, TIM_IT_CC1|TIM_IT_CC2|TIM_IT_CC3|TIM_IT_CC4, ENABLE);
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//Advanced timer output must be enabled //高级定时器输出必须使能这句
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TIM_CtrlPWMOutputs(TIM8,ENABLE);
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//Enable timer //使能定时器
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TIM_Cmd(TIM8, ENABLE);
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}
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/**************************************************************************
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Function: Model aircraft remote control receiving interrupt, namely timer 8 input capture interrupt
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Input : none
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Output : none
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函数功能：航模遥控接收中断，即定时器8输入捕获中断
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入口参数：无
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返 回 值：无
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**************************************************************************/
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void TIM8_CC_IRQHandler(void)
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{
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//连接航模遥遥控器后，需要推下前进杆，才可以正式航模控制小车
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//After connecting the remote controller of the model aircraft,
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//you need to push down the forward lever to officially control the car of the model aircraft
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if(Remoter_Ch2>1600&&Remote_ON_Flag==0&&Deviation_Count>=CONTROL_DELAY)
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{
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//Model aircraft remote control mark position 1, other marks position 0
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//航模遥控标志位置1，其它标志位置0
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Remote_ON_Flag=1;
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APP_ON_Flag=0;
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PS2_ON_Flag=0;
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CAN_ON_Flag=0;
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//Usart_ON_Flag=0;
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Usart1_ON_Flag=0;
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Usart5_ON_Flag=0;
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}
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// //Channel 1 //通道一
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if ((TIM8CH1_CAPTURE_STA & 0X80) == 0)
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{
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if (TIM_GetITStatus(TIM8, TIM_IT_CC1) != RESET) //A capture event occurred on channel 1 //通道1发生捕获事件
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{
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TIM_ClearITPendingBit(TIM8, TIM_IT_CC1); //Clear the interrupt flag bit //清除中断标志位
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if (TIM8CH1_CAPTURE_STA & 0X40) //A falling edge is caught //捕获到一个下降沿
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{
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TIM8CH1_CAPTURE_DOWNVAL = TIM_GetCapture1(TIM8); //Record the timer value at this point //记录下此时的定时器计数值
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if (TIM8CH1_CAPTURE_DOWNVAL < TIM8CH1_CAPTURE_UPVAL)
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{
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TIM8_T1 = 9999;
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}
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else
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TIM8_T1 = 0;
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Remoter_Ch1 = TIM8CH1_CAPTURE_DOWNVAL - TIM8CH1_CAPTURE_UPVAL + TIM8_T1; //Time to get the total high level //得到总的高电平的时间
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if(abs(Remoter_Ch1-L_Remoter_Ch1)>500) Remoter_Ch1=L_Remoter_Ch1; //Filter //滤波
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L_Remoter_Ch1=Remoter_Ch1;
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TIM8CH1_CAPTURE_STA = 0; //Capture flag bit to zero //捕获标志位清零
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TIM_OC1PolarityConfig(TIM8, TIM_ICPolarity_Rising); //Set to rising edge capture //设置为上升沿捕获
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}
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else
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{
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//When the capture time occurs but not the falling edge, the first time the rising edge is captured, record the timer value at this time
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//发生捕获时间但不是下降沿，第一次捕获到上升沿，记录此时的定时器计数值
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TIM8CH1_CAPTURE_UPVAL = TIM_GetCapture1(TIM8); //Obtain rising edge data //获取上升沿数据
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TIM8CH1_CAPTURE_STA |= 0X40; //The flag has been caught on the rising edge //标记已捕获到上升沿
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TIM_OC1PolarityConfig(TIM8, TIM_ICPolarity_Falling); //Set to Falling Edge Capture //设置为下降沿捕获
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}
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}
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}
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//Channel 2 //通道二
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if ((TIM8CH2_CAPTURE_STA & 0X80) == 0)
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{
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if (TIM_GetITStatus(TIM8, TIM_IT_CC2) != RESET) //A capture event occurred on channel 2 //通道2发生捕获事件
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{
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TIM_ClearITPendingBit(TIM8, TIM_IT_CC2); //Clear the interrupt flag bit //清除中断标志位
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if (TIM8CH2_CAPTURE_STA & 0X40) //A falling edge is caught //捕获到一个下降沿
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{
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TIM8CH2_CAPTURE_DOWNVAL = TIM_GetCapture2(TIM8); //Record the timer value at this point //记录下此时的定时器计数值
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if (TIM8CH2_CAPTURE_DOWNVAL < TIM8CH2_CAPTURE_UPVAL)
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{
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TIM8_T2 = 9999;
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}
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else
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TIM8_T2 = 0;
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Remoter_Ch2 = TIM8CH2_CAPTURE_DOWNVAL - TIM8CH2_CAPTURE_UPVAL + TIM8_T2; //Time to get the total high level //得到总的高电平的时间
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if(abs(Remoter_Ch2-L_Remoter_Ch2)>500)Remoter_Ch2=L_Remoter_Ch2; //Filter //滤波
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L_Remoter_Ch2=Remoter_Ch2;
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TIM8CH2_CAPTURE_STA = 0; //Capture flag bit to zero //捕获标志位清零
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TIM_OC2PolarityConfig(TIM8, TIM_ICPolarity_Rising); //Set to rising edge capture //设置为上升沿捕获
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}
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else
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{
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//When the capture time occurs but not the falling edge, the first time the rising edge is captured, record the timer value at this time
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//发生捕获时间但不是下降沿，第一次捕获到上升沿，记录此时的定时器计数值
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TIM8CH2_CAPTURE_UPVAL = TIM_GetCapture2(TIM8); //Obtain rising edge data //获取上升沿数据
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TIM8CH2_CAPTURE_STA |= 0X40; //The flag has been caught on the rising edge //标记已捕获到上升沿
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TIM_OC2PolarityConfig(TIM8, TIM_ICPolarity_Falling); //Set to Falling Edge Capture //设置为下降沿捕获
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}
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}
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}
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//Channel 3 //通道三
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if ((TIM8CH3_CAPTURE_STA & 0X80) == 0)
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{
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if (TIM_GetITStatus(TIM8, TIM_IT_CC3) != RESET) //A capture event occurred on channel 3 //通道3发生捕获事件
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{
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TIM_ClearITPendingBit(TIM8, TIM_IT_CC3); //Clear the interrupt flag bit //清除中断标志位
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if (TIM8CH3_CAPTURE_STA & 0X40) //A falling edge is caught //捕获到一个下降沿
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{
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TIM8CH3_CAPTURE_DOWNVAL = TIM_GetCapture3(TIM8); //Record the timer value at this point //记录下此时的定时器计数值
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if (TIM8CH3_CAPTURE_DOWNVAL < TIM8CH3_CAPTURE_UPVAL)
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{
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TIM8_T3 = 9999;
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}
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else
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TIM8_T3 = 0;
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Remoter_Ch3 = TIM8CH3_CAPTURE_DOWNVAL - TIM8CH3_CAPTURE_UPVAL + TIM8_T3; //Time to get the total high level //得到总的高电平的时间
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if(abs(Remoter_Ch3-L_Remoter_Ch3)>500)Remoter_Ch3=L_Remoter_Ch3; //Filter //滤波
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L_Remoter_Ch3=Remoter_Ch3;
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TIM8CH3_CAPTURE_STA = 0; //Capture flag bit to zero //捕获标志位清零
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TIM_OC3PolarityConfig(TIM8, TIM_ICPolarity_Rising); //Set to rising edge capture //设置为上升沿捕获
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}
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else
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{
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//When the capture time occurs but not the falling edge, the first time the rising edge is captured, record the timer value at this time
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//发生捕获时间但不是下降沿，第一次捕获到上升沿，记录此时的定时器计数值
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TIM8CH3_CAPTURE_UPVAL = TIM_GetCapture3(TIM8); //Obtain rising edge data //获取上升沿数据
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TIM8CH3_CAPTURE_STA |= 0X40; //The flag has been caught on the rising edge //标记已捕获到上升沿
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TIM_OC3PolarityConfig(TIM8, TIM_ICPolarity_Falling); //Set to Falling Edge Capture //设置为下降沿捕获
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}
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}
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}
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//
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//Channel 4 //通道四
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if ((TIM8CH4_CAPTURE_STA & 0X80) == 0)
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{
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if (TIM_GetITStatus(TIM8, TIM_IT_CC4) != RESET) //A capture event occurred on channel 4 //通道4发生捕获事件
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{
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TIM_ClearITPendingBit(TIM8, TIM_IT_CC4); //Clear the interrupt flag bit //清除中断标志位
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if (TIM8CH4_CAPTURE_STA & 0X40) //A falling edge is caught //捕获到一个下降沿
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{
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TIM8CH4_CAPTURE_DOWNVAL = TIM_GetCapture4(TIM8); //Record the timer value at this point //记录下此时的定时器计数值
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if (TIM8CH4_CAPTURE_DOWNVAL < TIM8CH4_CAPTURE_UPVAL)
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{
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TIM8_T4 = 9999;
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}
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else
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TIM8_T4 = 0;
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Remoter_Ch4 = TIM8CH4_CAPTURE_DOWNVAL - TIM8CH4_CAPTURE_UPVAL + TIM8_T4; //Time to get the total high level //得到总的高电平的时间
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if(abs(Remoter_Ch4-L_Remoter_Ch4)>500)Remoter_Ch4=L_Remoter_Ch4; //Filter //滤波
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L_Remoter_Ch4=Remoter_Ch4;
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TIM8CH4_CAPTURE_STA = 0; //Capture flag bit to zero //捕获标志位清零
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TIM_OC4PolarityConfig(TIM8, TIM_ICPolarity_Rising); //Set to rising edge capture //设置为上升沿捕获
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}
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else
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{
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//When the capture time occurs but not the falling edge, the first time the rising edge is captured, record the timer value at this time
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//发生捕获时间但不是下降沿，第一次捕获到上升沿，记录此时的定时器计数值
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TIM8CH4_CAPTURE_UPVAL = TIM_GetCapture4(TIM8); //Obtain rising edge data //获取上升沿数据
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TIM8CH4_CAPTURE_STA |= 0X40; //The flag has been caught on the rising edge //标记已捕获到上升沿
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TIM_OC4PolarityConfig(TIM8, TIM_ICPolarity_Falling); //Set to Falling Edge Capture //设置为下降沿捕获
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}
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}
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}
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}
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/**************************************************************************
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Function: TIM1 Update Interrupt
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Input : none
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Output : none
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函数功能：定时器8更新中断
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入口参数：无
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返回 值：无
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**************************************************************************/
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void TIM8_UP_TIM13_IRQHandler(void)
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{
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//Clear the interrupt flag bit
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//清除中断标志位
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TIM8->SR&=~(1<<0);
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}
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void TIM8_SERVO_Init(u16 arr,u16 psc)
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{
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GPIO_InitTypeDef GPIO_InitStructure; //IO
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TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure; //定时器
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TIM_OCInitTypeDef TIM_OCInitStructure; //PWM输出
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM8,ENABLE); //TIM1时钟使能
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RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOC, ENABLE); //使能PORTE时钟
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GPIO_InitStructure.GPIO_Mode=GPIO_Mode_AF;
|
||
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6|GPIO_Pin_7|GPIO_Pin_8|GPIO_Pin_9;
|
||
GPIO_InitStructure.GPIO_Speed=GPIO_Speed_100MHz;
|
||
GPIO_InitStructure.GPIO_OType=GPIO_OType_PP;
|
||
GPIO_InitStructure.GPIO_PuPd=GPIO_PuPd_UP;
|
||
GPIO_Init(GPIOC, &GPIO_InitStructure);
|
||
|
||
GPIO_PinAFConfig(GPIOC,GPIO_PinSource6,GPIO_AF_TIM8);
|
||
GPIO_PinAFConfig(GPIOC,GPIO_PinSource7,GPIO_AF_TIM8);
|
||
GPIO_PinAFConfig(GPIOC,GPIO_PinSource8,GPIO_AF_TIM8);
|
||
GPIO_PinAFConfig(GPIOC,GPIO_PinSource9,GPIO_AF_TIM8);
|
||
|
||
|
||
/*** Initialize timer 1 || 初始化定时器1 ***/
|
||
//Set the counter to automatically reload //设定计数器自动重装值
|
||
TIM_TimeBaseStructure.TIM_Period = arr;
|
||
//Pre-divider //预分频器
|
||
TIM_TimeBaseStructure.TIM_Prescaler = psc;
|
||
//Set the clock split: TDTS = Tck_tim //设置时钟分割:TDTS = Tck_tim
|
||
TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;
|
||
//TIM up count mode //TIM向上计数模式
|
||
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
|
||
//Initializes the timebase unit for TIMX based on the parameter specified in TIM_TimeBaseInitStruct
|
||
//根据TIM_TimeBaseInitStruct中指定的参数初始化TIMx的时间基数单位
|
||
TIM_TimeBaseInit(TIM8, &TIM_TimeBaseStructure);
|
||
|
||
|
||
//-----------舵机初始化-----------//
|
||
//Select Timer mode :TIM Pulse Width Modulation mode 1
|
||
//选择定时器模式:TIM脉冲宽度调制模式1
|
||
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
|
||
//Compare output enablement
|
||
//比较输出使能
|
||
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
|
||
//Set the pulse value of the capture comparison register to be loaded
|
||
//设置待装入捕获比较寄存器的脉冲值
|
||
TIM_OCInitStructure.TIM_Pulse = 0;
|
||
//Output polarity :TIM output polarity is higher
|
||
//输出极性:TIM输出比较极性高
|
||
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
|
||
TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Reset;
|
||
|
||
//Initialize the peripheral TIMX based on the parameter specified in TIM_OCINITSTRUCT
|
||
//根据TIM_OCInitStruct中指定的参数初始化外设TIMx
|
||
TIM_OC1Init(TIM8, &TIM_OCInitStructure);
|
||
TIM_OC2Init(TIM8, &TIM_OCInitStructure);
|
||
TIM_OC3Init(TIM8, &TIM_OCInitStructure);
|
||
TIM_OC4Init(TIM8, &TIM_OCInitStructure);
|
||
//Channel preload enable
|
||
//通道预装载使能
|
||
TIM_OC1PreloadConfig(TIM8, TIM_OCPreload_Enable);
|
||
TIM_OC2PreloadConfig(TIM8, TIM_OCPreload_Enable);
|
||
TIM_OC3PreloadConfig(TIM8, TIM_OCPreload_Enable);
|
||
TIM_OC4PreloadConfig(TIM8, TIM_OCPreload_Enable);
|
||
//-----------舵机初始化-----------//
|
||
|
||
TIM_CtrlPWMOutputs(TIM8,ENABLE);
|
||
//Enable timer //使能定时器
|
||
TIM_Cmd(TIM8, ENABLE);
|
||
|
||
//The channel value is initialized to 1500, corresponding to the steering gear zero
|
||
//通道值初始化为1500，舵机零点对应值
|
||
// TIM8->CCR1=1500;
|
||
// TIM8->CCR2=1500;
|
||
// TIM8->CCR3=1500;
|
||
// TIM8->CCR4=1500;
|
||
}
|
||
|
||
|
||
void TIM12_SERVO_Init(u16 arr,u16 psc)
|
||
{
|
||
GPIO_InitTypeDef GPIO_InitStructure; //IO
|
||
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure; //定时器
|
||
TIM_OCInitTypeDef TIM_OCInitStructure; //PWM输出
|
||
|
||
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM12,ENABLE); //TIM1时钟使能
|
||
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB, ENABLE); //使能PORTE时钟
|
||
|
||
GPIO_InitStructure.GPIO_Mode=GPIO_Mode_AF;
|
||
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_14|GPIO_Pin_15;
|
||
GPIO_InitStructure.GPIO_Speed=GPIO_Speed_100MHz;
|
||
GPIO_InitStructure.GPIO_OType=GPIO_OType_PP;
|
||
GPIO_InitStructure.GPIO_PuPd=GPIO_PuPd_UP;
|
||
GPIO_Init(GPIOB, &GPIO_InitStructure);
|
||
|
||
GPIO_PinAFConfig(GPIOB,GPIO_PinSource14,GPIO_AF_TIM12);
|
||
GPIO_PinAFConfig(GPIOB,GPIO_PinSource15,GPIO_AF_TIM12);
|
||
|
||
|
||
/*** Initialize timer 1 || 初始化定时器1 ***/
|
||
//Set the counter to automatically reload //设定计数器自动重装值
|
||
TIM_TimeBaseStructure.TIM_Period = arr;
|
||
//Pre-divider //预分频器
|
||
TIM_TimeBaseStructure.TIM_Prescaler = psc;
|
||
//Set the clock split: TDTS = Tck_tim //设置时钟分割:TDTS = Tck_tim
|
||
TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;
|
||
//TIM up count mode //TIM向上计数模式
|
||
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
|
||
//Initializes the timebase unit for TIMX based on the parameter specified in TIM_TimeBaseInitStruct
|
||
//根据TIM_TimeBaseInitStruct中指定的参数初始化TIMx的时间基数单位
|
||
TIM_TimeBaseInit(TIM12, &TIM_TimeBaseStructure);
|
||
|
||
|
||
//-----------舵机初始化-----------//
|
||
//Select Timer mode :TIM Pulse Width Modulation mode 1
|
||
//选择定时器模式:TIM脉冲宽度调制模式1
|
||
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
|
||
//Compare output enablement
|
||
//比较输出使能
|
||
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
|
||
//Set the pulse value of the capture comparison register to be loaded
|
||
//设置待装入捕获比较寄存器的脉冲值
|
||
TIM_OCInitStructure.TIM_Pulse = 0;
|
||
//Output polarity :TIM output polarity is higher
|
||
//输出极性:TIM输出比较极性高
|
||
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
|
||
TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Reset;
|
||
|
||
//Initialize the peripheral TIMX based on the parameter specified in TIM_OCINITSTRUCT
|
||
//根据TIM_OCInitStruct中指定的参数初始化外设TIMx
|
||
TIM_OC1Init(TIM12, &TIM_OCInitStructure);
|
||
TIM_OC2Init(TIM12, &TIM_OCInitStructure);
|
||
//Channel preload enable
|
||
//通道预装载使能
|
||
TIM_OC1PreloadConfig(TIM12, TIM_OCPreload_Enable);
|
||
TIM_OC2PreloadConfig(TIM12, TIM_OCPreload_Enable);
|
||
//-----------舵机初始化-----------//
|
||
|
||
|
||
TIM_CtrlPWMOutputs(TIM12,ENABLE);
|
||
//Enable timer //使能定时器
|
||
TIM_Cmd(TIM12, ENABLE);
|
||
|
||
//The channel value is initialized to 1500, corresponding to the steering gear zero
|
||
//通道值初始化为1500，舵机零点对应值
|
||
TIM12->CCR2=1500;
|
||
TIM12->CCR1=1500;
|
||
|
||
}
|
||
|