STM32 通用定時器的幾種配置方式

#include"stm32f10x.h"
#include"time.h"

static Time_NVIC_Config(void)
{
NVIC_InitTypeDef NVIC_InitStructure;

NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0000);

NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);

NVIC_InitStructure.NVIC_IRQChannel = TIMx_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;

NVIC_Init(&NVIC_InitStructure);
}

static void Time_Config(void)
{
TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure;

RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIMx,ENABLE);
//TIM_DeInit(TIM2);

TIM_TimeBaseInitStructure.TIM_Prescaler =(10000-1); //時鐘分頻系數
TIM_TimeBaseInitStructure.TIM_Period =(7200-1); //自動重裝寄存器
TIM_TimeBaseInitStructure.TIM_CounterMode =TIM_CounterMode_Up; //向上計數模式
TIM_TimeBaseInitStructure.TIM_ClockDivision =0; //時鐘分割,這里不涉及
#if 0
TIM_TimeBaseInitStructure.TIM_RepetitionCounter; //This parameter is valid only for TIM1 and TIM8
#endif

TIM_TimeBaseInit(TIMx,&TIM_TimeBaseInitStructure); //配置參數
TIM_ClearITPendingBit(TIMx,TIM_IT_Update); //清除中斷標示位
TIM_ITConfig(TIMx,TIM_IT_Update,ENABLE); //中斷配置
TIM_Cmd(TIMx,ENABLE); //啟動定時器
}

void Time_Init(void)
{
Time_Config(); //定時器配置
Time_NVIC_Config(); //嵌套中斷向量初始化

}

2、PWM輸出

#include"stm32f10x.h"
#include"time.h"

#if 0

static Time_NVIC_Config(void)
{
NVIC_InitTypeDef NVIC_InitStructure;

NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0000);

NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);

NVIC_InitStructure.NVIC_IRQChannel = TIMx_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;

NVIC_Init(&NVIC_InitStructure);
}
#endif

void Time_OUT_PWM_GPIO_Config(void)
{
GPIO_InitTypeDef GPIO_InitStructure;

RCC_APB2PeriphClockCmd(TIMx_OUT_GPIO_RCC,ENABLE);

GPIO_InitStructure.GPIO_Pin =TIMx_OUT_Pin;
GPIO_InitStructure.GPIO_Mode =GPIO_Mode_AF_PP; //復用推免式輸出
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

GPIO_Init(TIMx_OUT_Port, &GPIO_InitStructure);
}

static void Time_OUT_PWM_Config(void)
{
TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure;
TIM_OCInitTypeDef TIM_OCInitStructure;

RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIMx,ENABLE); //開啟時鐘
TIM_DeInit(TIM2);

TIM_TimeBaseInitStructure.TIM_Prescaler =(100-1); //時鐘分頻系數
TIM_TimeBaseInitStructure.TIM_Period =(1000-1); //自動重裝寄存器 PWM頻率:72M/100/1000=720Hz
TIM_TimeBaseInitStructure.TIM_CounterMode =TIM_CounterMode_Up; //向上計數模式
TIM_TimeBaseInitStructure.TIM_ClockDivision =0; //時鐘分頻,這里不涉及
#ifdef Time1
TIM_TimeBaseInitStructure.TIM_RepetitionCounter; //This parameter is valid only for TIM1 and TIM8
#endif

TIM_TimeBaseInit(TIMx,&TIM_TimeBaseInitStructure); //配置參數
TIM_ClearITPendingBit(TIMx,TIM_IT_Update); //清除中斷標示位

TIM_OCInitStructure.TIM_OCMode =TIM_OCMode_PWM1; //PWM1模式 OCx電平根據ARR與CCRx比較結果發生反轉
TIM_OCInitStructure.TIM_OutputState =TIM_OutputState_Enable; //輸出使能通道1
#ifdef Time1
TIM_OCInitStructure.TIM_OutputNState =;
#endif
TIM_OCInitStructure.TIM_Pulse =CCR1_VAL; //占空比800/1000
TIM_OCInitStructure.TIM_OCPolarity =TIM_OCPolarity_Low; //計數器值小于CCR值時輸出高電平
#ifdef Time1
TIM_OCInitStructure.TIM_OCNPolarity =;
TIM_OCInitStructure.TIM_OCIdleState =;
TIM_OCInitStructure.TIM_OCNIdleState =;
#endif

TIM_OC1Init(TIMx,&TIM_OCInitStructure);
TIM_OC1PreloadConfig(TIMx,TIM_OCPreload_Enable); //使能CCR1預裝載

TIM_OCInitStructure.TIM_OutputState =TIM_OutputState_Enable; //輸出使能通道2
TIM_OCInitStructure.TIM_Pulse =CCR2_VAL;

TIM_OC2Init(TIMx,&TIM_OCInitStructure);
TIM_OC2PreloadConfig(TIMx,TIM_OCPreload_Enable);

TIM_OCInitStructure.TIM_OutputState =TIM_OutputState_Enable; //輸出使能通道3
TIM_OCInitStructure.TIM_Pulse =CCR3_VAL;
TIM_OCInitStructure.TIM_OCPolarity =TIM_OCPolarity_High;

TIM_OC3Init(TIMx,&TIM_OCInitStructure);
TIM_OC3PreloadConfig(TIMx,TIM_OCPreload_Enable);

TIM_OCInitStructure.TIM_OutputState =TIM_OutputState_Enable; //輸出使能通道4
TIM_OCInitStructure.TIM_Pulse =CCR4_VAL;

TIM_OC4Init(TIMx,&TIM_OCInitStructure);
TIM_OC4PreloadConfig(TIMx,TIM_OCPreload_Enable);

TIM_ARRPreloadConfig(TIMx,ENABLE); //開啟ARR預裝載
TIM_Cmd(TIMx,ENABLE); //啟動定時器
}

void Time_OUT_PWM_Init(void)
{
Time_OUT_PWM_GPIO_Config();
Time_OUT_PWM_Config(); //定時器配置
}

3、輸出比較模式

#include"stm32f10x.h"
#include"time.h"

static Time_NVIC_Config(void)
{
NVIC_InitTypeDef NVIC_InitStructure;

NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0000);

NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);

NVIC_InitStructure.NVIC_IRQChannel = TIMx_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;

NVIC_Init(&NVIC_InitStructure);
}

static void Time_OUT_PWM_GPIO_Config(void)
{
GPIO_InitTypeDef GPIO_InitStructure;

RCC_APB2PeriphClockCmd(TIMx_OUT_GPIO_RCC,ENABLE);

GPIO_InitStructure.GPIO_Pin =TIMx_OUT_Pin;
GPIO_InitStructure.GPIO_Mode =GPIO_Mode_AF_PP; //復用推免式輸出
GPIO_InitStructure.GPIO_Speed =GPIO_Speed_50MHz;

GPIO_Init(TIMx_OUT_Port, &GPIO_InitStructure);
}

static void Time_GPIO_Config(void)
{
GPIO_InitTypeDef GPIO_InitStructure;

RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD,ENABLE);

GPIO_InitStructure.GPIO_Pin =GPIO_Pin_1;
GPIO_InitStructure.GPIO_Mode =GPIO_Mode_Out_PP; //通用推免式輸出
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

GPIO_Init(GPIOD, &GPIO_InitStructure);
}

static void Time_OUT_PWM_Config(void)
{
TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure;
TIM_OCInitTypeDef TIM_OCInitStructure;

RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIMx,ENABLE); //開啟時鐘
TIM_DeInit(TIM2);

TIM_TimeBaseInitStructure.TIM_Prescaler =(100-1); //時鐘分頻系數
TIM_TimeBaseInitStructure.TIM_Period =(1000-1); //自動重裝寄存器 PWM頻率:72M/100/1000=720Hz
TIM_TimeBaseInitStructure.TIM_CounterMode =TIM_CounterMode_Up; //向上計數模式
TIM_TimeBaseInitStructure.TIM_ClockDivision =0; //時鐘分頻,這里不涉及
#ifdef Time1
TIM_TimeBaseInitStructure.TIM_RepetitionCounter; //This parameter is valid only for TIM1 and TIM8
#endif

TIM_TimeBaseInit(TIMx,&TIM_TimeBaseInitStructure); //配置參數
TIM_ClearITPendingBit(TIMx,TIM_IT_Update); //清除中斷標示位

TIM_OCInitStructure.TIM_OCMode =TIM_OCMode_Inactive; //ARR與CCRx相同時強制OCxREF為低
TIM_OCInitStructure.TIM_OutputState =TIM_OutputState_Enable; //輸出使能通道1
#ifdef Time1
TIM_OCInitStructure.TIM_OutputNState =;
#endif
TIM_OCInitStructure.TIM_Pulse =CCR1_VAL;
TIM_OCInitStructure.TIM_OCPolarity =TIM_OCPolarity_High; //OCx=!OCxREF _High OCx=OCxREF
#ifdef Time1
TIM_OCInitStructure.TIM_OCNPolarity =;
TIM_OCInitStructure.TIM_OCIdleState =;
TIM_OCInitStructure.TIM_OCNIdleState =;
#endif

TIM_OC1Init(TIMx,&TIM_OCInitStructure);
TIM_OC1PreloadConfig(TIMx,TIM_OCPreload_Enable); //使能CCR1預裝載
TIM_ITConfig(TIMx,TIM_IT_CC1,ENABLE); //使能OC1比較中斷

TIM_OCInitStructure.TIM_OCMode =TIM_OCMode_Active; //ARR與CCRx相同時強制OCxREF為高
TIM_OCInitStructure.TIM_OutputState =TIM_OutputState_Enable; //輸出使能通道2
TIM_OCInitStructure.TIM_Pulse =CCR2_VAL;
TIM_OCInitStructure.TIM_OCPolarity =TIM_OCPolarity_Low; //OCx=!OCxREF _High OCx=OCxREF

TIM_OC2Init(TIMx,&TIM_OCInitStructure);
TIM_OC2PreloadConfig(TIMx,TIM_OCPreload_Enable);
TIM_ITConfig(TIMx,TIM_IT_CC2,ENABLE);

TIM_OCInitStructure.TIM_OCMode =TIM_OCMode_Timing; //ARR與CCRx比較結果對OCxREF無效
TIM_OCInitStructure.TIM_OutputState =TIM_OutputState_Enable; //輸出使能通道3
TIM_OCInitStructure.TIM_Pulse =CCR3_VAL;
TIM_ITConfig(TIMx,TIM_IT_CC3,ENABLE);

TIM_OC3Init(TIMx,&TIM_OCInitStructure);
TIM_OC3PreloadConfig(TIMx,TIM_OCPreload_Enable);

TIM_OCInitStructure.TIM_OCMode =TIM_OCMode_PWM1; //ARR與CCRx比較結果對OCxREF采用PWM1模式
TIM_OCInitStructure.TIM_OutputState =TIM_OutputState_Enable; //輸出使能通道4
TIM_OCInitStructure.TIM_Pulse =CCR4_VAL;
//TIM_ITConfig(TIMx,TIM_IT_CC4,ENABLE); //PWM就沒有必要設置中斷 當然也可以在中斷里面改變占空比

TIM_OC4Init(TIMx,&TIM_OCInitStructure);
TIM_OC4PreloadConfig(TIMx,TIM_OCPreload_Enable);

TIM_ARRPreloadConfig(TIMx,ENABLE); //開啟ARR預裝載
TIM_Cmd(TIMx,ENABLE); //啟動定時器
}

void Time_OUT_PWM_Init(void)
{
Time_OUT_PWM_GPIO_Config();
Time_GPIO_Config();
Time_NVIC_Config();
Time_OUT_PWM_Config(); //定時器配置
}

4、PWMI模式

#include"stm32f10x.h"
#include"time.h"

static Time_NVIC_Config(void)
{
NVIC_InitTypeDef NVIC_InitStructure;

NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0000);

NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);

NVIC_InitStructure.NVIC_IRQChannel = TIMx_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;

NVIC_Init(&NVIC_InitStructure);
}