315 lines
9.4 KiB
C
315 lines
9.4 KiB
C
#include "timer.h"
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#include "led.h"
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//////////////////////////////////////////////////////////////////////////////////
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//本程序只供学习使用，未经作者许可，不得用于其它任何用途
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//ALIENTEK STM32F407开发板
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//定时器 驱动代码
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//正点原子@ALIENTEK
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//技术论坛:www.openedv.com
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//创建日期:2014/5/4
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//版本：V1.0
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//版权所有，盗版必究。
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//Copyright(C) 广州市星翼电子科技有限公司 2014-2024
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//All rights reserved
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//////////////////////////////////////////////////////////////////////////////////
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void TIM1_PWM_Init(u16 arr,u16 psc)
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{
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GPIO_InitTypeDef GPIO_InitStructure;
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TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure;
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TIM_OCInitTypeDef TIM_OCInitStructure;
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1,ENABLE); ///使能TIM1时钟
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RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOE,ENABLE);
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GPIO_PinAFConfig(GPIOE,GPIO_PinSource9,GPIO_AF_TIM1);
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
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GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
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GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
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GPIO_Init(GPIOE,&GPIO_InitStructure);
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// GPIO_ResetBits(GPIOE, GPIO_Pin_9);
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TIM_TimeBaseInitStructure.TIM_Period = arr; //自动重装载值
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TIM_TimeBaseInitStructure.TIM_Prescaler=psc; //定时器分频
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TIM_TimeBaseInitStructure.TIM_CounterMode=TIM_CounterMode_Up; //向上计数模式
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TIM_TimeBaseInitStructure.TIM_ClockDivision=TIM_CKD_DIV1;
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TIM_TimeBaseInit(TIM1,&TIM_TimeBaseInitStructure);//初始化TIM3
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TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
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TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
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TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
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TIM_OCInitStructure.TIM_Pulse = arr/2;
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TIM_OC1Init(TIM1, &TIM_OCInitStructure);
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TIM_OC1PreloadConfig(TIM1, TIM_OCPreload_Enable);
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TIM_ARRPreloadConfig(TIM1,ENABLE);
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TIM_Cmd(TIM1, ENABLE);
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TIM_CtrlPWMOutputs(TIM1,ENABLE);
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}
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//定时器3中断服务函数
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void TIM1_IRQHandler(void)
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{
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}
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void TIM2_Int_Init(u16 arr,u16 psc)
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{
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TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure;
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NVIC_InitTypeDef NVIC_InitStructure;
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RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2,ENABLE); ///使能TIM3时钟
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TIM_TimeBaseInitStructure.TIM_Period = arr; //自动重装载值
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TIM_TimeBaseInitStructure.TIM_Prescaler=psc; //定时器分频
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TIM_TimeBaseInitStructure.TIM_CounterMode=TIM_CounterMode_Up; //向上计数模式
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TIM_TimeBaseInitStructure.TIM_ClockDivision=TIM_CKD_DIV1;
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TIM_TimeBaseInit(TIM2,&TIM_TimeBaseInitStructure);//初始化TIM3
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TIM_ITConfig(TIM2,TIM_IT_Update,ENABLE); //允许定时器3更新中断
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TIM_Cmd(TIM2,ENABLE); //使能定时器3
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NVIC_InitStructure.NVIC_IRQChannel=TIM2_IRQn; //定时器3中断
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NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=0x01; //抢占优先级1
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NVIC_InitStructure.NVIC_IRQChannelSubPriority=0x03; //子优先级3
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NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;
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NVIC_Init(&NVIC_InitStructure);
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}
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u8 led_flag=0;
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u16 index=0;
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extern u16 real_dis_data[6];
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extern u16 real_dis_data_bak[6];
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extern u8 double_buffer_flag;
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//定时器2中断服务函数
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void TIM2_IRQHandler_bak(void)
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{
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char vcm_cmd[16];
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if(TIM_GetITStatus(TIM2,TIM_IT_Update)==SET) //溢出中断
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{
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#if 1
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if(led_flag == 0)
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{
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GPIO_SetBits(GPIOE, GPIO_Pin_0);
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led_flag = 1;
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TIM_ClearITPendingBit(TIM2,TIM_IT_Update); //清除中断标志位
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return;
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}
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if(led_flag == 1)
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{
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GPIO_ResetBits(GPIOE, GPIO_Pin_0);
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led_flag = 0;
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TIM_ClearITPendingBit(TIM2,TIM_IT_Update); //清除中断标志位
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return;
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}
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#endif
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#if 0
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sprintf(vcm_cmd,VCM_DISPLACE_CMD,real_dis_data[index]);
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usart_send(USART3, vcm_cmd);
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usart_send(USART3, START_MACRO_NUM);
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TIM_ClearITPendingBit(TIM2,TIM_IT_Update); //清除中断标志位
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return;
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#endif
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#if 0
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if(led_flag == 0)
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{
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sprintf(vcm_cmd,VCM_DISPLACE_CMD,real_dis_data[index]);
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usart_send(USART3, vcm_cmd);
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usart_send(USART3, START_MACRO_NUM);
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index++;
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TIM_ClearITPendingBit(TIM2,TIM_IT_Update); //清除中断标志位
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return;
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}
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if(led_flag == 1)
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{
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sprintf(vcm_cmd,VCM_DISPLACE_CMD,real_dis_data_bak[index]);
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usart_send(USART3, vcm_cmd);
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usart_send(USART3, START_MACRO_NUM);
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TIM_ClearITPendingBit(TIM2,TIM_IT_Update); //清除中断标志位
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return;
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}
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if(index > 199 && led_flag == 0)
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{
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index = 0;
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led_flag = 1;
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double_buffer_flag = 0;
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usart_send(USART1, "laishuju");
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}
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if(index > 199 && led_flag == 1)
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{
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index = 0;
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led_flag = 0;
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double_buffer_flag = 1;
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usart_send(USART1, "laishuju");
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}
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#endif
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}
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}
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void TIM2_PWM_Init(u16 arr,u16 psc)
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{
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GPIO_InitTypeDef GPIO_InitStructure;
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TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure;
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TIM_OCInitTypeDef TIM_OCInitStructure;
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RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2,ENABLE); ///使能TIM1时钟
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RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB,ENABLE);
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GPIO_PinAFConfig(GPIOB,GPIO_PinSource3,GPIO_AF_TIM2);
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
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GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
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GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
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GPIO_Init(GPIOB,&GPIO_InitStructure);
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// GPIO_ResetBits(GPIOB, GPIO_Pin_3);
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TIM_TimeBaseInitStructure.TIM_Period = arr; //自动重装载值
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TIM_TimeBaseInitStructure.TIM_Prescaler=psc; //定时器分频
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TIM_TimeBaseInitStructure.TIM_CounterMode=TIM_CounterMode_Up; //向上计数模式
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TIM_TimeBaseInitStructure.TIM_ClockDivision=TIM_CKD_DIV1;
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TIM_TimeBaseInit(TIM2,&TIM_TimeBaseInitStructure);//初始化TIM3
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TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
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TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
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TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low;
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TIM_OCInitStructure.TIM_Pulse = arr/2;
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TIM_OC2Init(TIM2, &TIM_OCInitStructure);
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TIM_OC2PreloadConfig(TIM2, TIM_OCPreload_Enable);
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TIM_ARRPreloadConfig(TIM2,ENABLE);
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TIM_Cmd(TIM2, ENABLE);
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}
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//通用定时器3中断初始化
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//arr：自动重装值。
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//psc：时钟预分频数
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//定时器溢出时间计算方法:Tout=((arr+1)*(psc+1))/Ft us.
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//Ft=定时器工作频率,单位:Mhz
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//这里使用的是定时器3!
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void TIM3_PWM_Init(u16 arr,u16 psc)
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{
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GPIO_InitTypeDef GPIO_InitStructure;
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TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure;
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TIM_OCInitTypeDef TIM_OCInitStructure;
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RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3,ENABLE); ///使能TIM3时钟
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RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA,ENABLE);
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GPIO_PinAFConfig(GPIOA,GPIO_PinSource6,GPIO_AF_TIM3);
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
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GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
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GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
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GPIO_Init(GPIOA,&GPIO_InitStructure);
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GPIO_ResetBits(GPIOA, GPIO_Pin_6);
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TIM_TimeBaseInitStructure.TIM_Period = arr; //自动重装载值
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TIM_TimeBaseInitStructure.TIM_Prescaler=psc; //定时器分频
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TIM_TimeBaseInitStructure.TIM_CounterMode=TIM_CounterMode_Up; //向上计数模式
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TIM_TimeBaseInitStructure.TIM_ClockDivision=TIM_CKD_DIV1;
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TIM_TimeBaseInit(TIM3,&TIM_TimeBaseInitStructure);//初始化TIM3
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TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
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TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
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TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low;
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TIM_OCInitStructure.TIM_Pulse = 100;
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TIM_OC1Init(TIM3, &TIM_OCInitStructure);
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TIM_OC1PreloadConfig(TIM3, TIM_OCPreload_Enable);
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TIM_ARRPreloadConfig(TIM3,ENABLE);
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//TIM_Cmd(TIM3, ENABLE);
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}
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//定时器3中断服务函数
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void TIM3_IRQHandler(void)
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{
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}
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void TIM4_PWM_Init(u16 arr,u16 psc)
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{
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GPIO_InitTypeDef GPIO_InitStructure;
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TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure;
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TIM_OCInitTypeDef TIM_OCInitStructure;
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RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM4,ENABLE); ///使能TIM3时钟
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RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOD,ENABLE);
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GPIO_PinAFConfig(GPIOD,GPIO_PinSource15,GPIO_AF_TIM4);
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_15;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
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GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
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GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
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GPIO_Init(GPIOD,&GPIO_InitStructure);
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// GPIO_ResetBits(GPIOD, GPIO_Pin_15);
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TIM_TimeBaseInitStructure.TIM_Period = arr; //自动重装载值
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TIM_TimeBaseInitStructure.TIM_Prescaler=psc; //定时器分频
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TIM_TimeBaseInitStructure.TIM_CounterMode=TIM_CounterMode_Up; //向上计数模式
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TIM_TimeBaseInitStructure.TIM_ClockDivision=TIM_CKD_DIV1;
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TIM_TimeBaseInit(TIM4,&TIM_TimeBaseInitStructure);//初始化TIM3
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TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
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TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
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TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low;
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TIM_OCInitStructure.TIM_Pulse = arr/2;
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TIM_OC4Init(TIM4, &TIM_OCInitStructure);
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TIM_OC4PreloadConfig(TIM4, TIM_OCPreload_Enable);
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TIM_ARRPreloadConfig(TIM4,ENABLE);
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TIM_Cmd(TIM4, ENABLE);
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}
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//定时器3中断服务函数
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void TIM4_IRQHandler(void)
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{
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}
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