2019年08月29日 | STM32F429 >> 14. TIM_（二）_高级定时器 (Code)

基本定时器输出PWM 信号

在该例程中，我将PWM 信号输出管脚连接至LED 管脚，以此观察PWM 信号输出是否正常。

注意：若要对LED 管脚进行初始化配置，对应LED 不能设置为熄灭，否则PWM 信号不能点亮LED

bsp_tim_advanced.h

/**

  ******************************************************************************

  * @file    bsp_tim_advanced.h

  * @author  Waao

  * @version V1.0.0

  * @date    30-Jan-2019

  * @brief   This file contains some board support package's definitions for the advanced TIM.

  *            

  ******************************************************************************

  * @attention

  *

  * None

*

  ******************************************************************************

  */

#ifndef __BSP_TIM_ADVANCED_H_

#define __BSP_TIM_ADVANCED_H_

#include

extern u16 Channel_Pulse;

//============== TIM ================

#define Specified_TIM_ TIM8

#define TIM_CLK RCC_APB2Periph_TIM8

//============== GPIO ================

#define TIM_OCPWM_GPIO_PORT GPIOC

#define TIM_OCPWM_GPIO_PIN GPIO_Pin_6

#define TIM_OCPWM_GPIO_CLK RCC_AHB1Periph_GPIOC

#define TIM_OCPWM_GPIO_PINSOURCE GPIO_PinSource6

#define TIM_OCPWM_GPIO_AF GPIO_AF_TIM8

#define TIM_OCNPWM_GPIO_PORT GPIOA

#define TIM_OCNPWM_GPIO_PIN GPIO_Pin_5

#define TIM_OCNPWM_GPIO_CLK RCC_AHB1Periph_GPIOA

#define TIM_OCNPWM_GPIO_PINSOURCE GPIO_PinSource5

#define TIM_OCNPWM_GPIO_AF GPIO_AF_TIM8

#define TIM_BKIN_GPIO_PORT GPIOA

#define TIM_BKIN_GPIO_PIN GPIO_Pin_6

#define TIM_BKIN_GPIO_CLK RCC_AHB1Periph_GPIOA

#define TIM_BKIN_GPIO_PINSOURCE GPIO_PinSource6

#define TIM_BKIN_GPIO_AF GPIO_AF_TIM8

void TIM_GPIO_Config(void);

void TIM_Config(void);

#endif

bsp_tim_advanced.c

/**

  ******************************************************************************

  * @file    bsp_tim_advanced.c

  * @author  Waao

  * @version V1.0.0

  * @date    30-Jan-2019

  * @brief   This file contains some board support package's functions for the TIM.

  *            

  ******************************************************************************

  * @attention

  *

  * None

*

  ******************************************************************************

  */

#include

u16 Channel_Pulse = 130;

/**

  * @brief  Initialize the gpio.

  * @param  None  

  * @retval None

  */

void TIM_GPIO_Config(void)

{

GPIO_InitTypeDef OCPWM_GPIO_InitStructure;

GPIO_InitTypeDef OCNPWM_GPIO_InitStructure;

GPIO_InitTypeDef BKIN_GPIO_InitStructure;

//============= OCPWM ===============

RCC_AHB1PeriphClockCmd(TIM_OCPWM_GPIO_CLK, ENABLE);

OCPWM_GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;

OCPWM_GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;

OCPWM_GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;

OCPWM_GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

OCPWM_GPIO_InitStructure.GPIO_Pin = TIM_OCPWM_GPIO_PIN;

GPIO_PinAFConfig(TIM_OCPWM_GPIO_PORT, TIM_OCPWM_GPIO_PINSOURCE, TIM_OCPWM_GPIO_AF);

GPIO_Init(TIM_OCPWM_GPIO_PORT, &OCPWM_GPIO_InitStructure);

//============= OCNPWM ===============

RCC_AHB1PeriphClockCmd(TIM_OCNPWM_GPIO_CLK, ENABLE);

OCNPWM_GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;

OCNPWM_GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;

OCNPWM_GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;

OCNPWM_GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

OCNPWM_GPIO_InitStructure.GPIO_Pin = TIM_OCNPWM_GPIO_PIN;

GPIO_PinAFConfig(TIM_OCNPWM_GPIO_PORT, TIM_OCNPWM_GPIO_PINSOURCE, TIM_OCNPWM_GPIO_AF);

GPIO_Init(TIM_OCNPWM_GPIO_PORT, &OCNPWM_GPIO_InitStructure);

//============= BKIN ===============

RCC_AHB1PeriphClockCmd(TIM_BKIN_GPIO_CLK, ENABLE);

BKIN_GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;

BKIN_GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;

BKIN_GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;

BKIN_GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

BKIN_GPIO_InitStructure.GPIO_Pin = TIM_BKIN_GPIO_PIN;

GPIO_PinAFConfig(TIM_BKIN_GPIO_PORT, TIM_BKIN_GPIO_PINSOURCE, TIM_BKIN_GPIO_AF);

GPIO_Init(TIM_BKIN_GPIO_PORT, &BKIN_GPIO_InitStructure);

}

/**

  * @brief  Initialize the advanced TIM.

  * @param  None  

  * @retval None

  */

void TIM_Config(void)

{

TIM_TimeBaseInitTypeDef TIM_TimeBase_InitStructure;

TIM_OCInitTypeDef TIM_OC_InitStructure;

TIM_BDTRInitTypeDef TIM_BDTR_InitStructure;

RCC_APB2PeriphClockCmd(TIM_CLK, ENABLE);

//=================== TIM_TimeBase_InitStructure =================

TIM_TimeBase_InitStructure.TIM_CounterMode = TIM_CounterMode_Up;

TIM_TimeBase_InitStructure.TIM_Prescaler = 1800-1;

TIM_TimeBase_InitStructure.TIM_Period = 1024-1;

TIM_TimeBase_InitStructure.TIM_ClockDivision = TIM_CKD_DIV1;

TIM_TimeBase_InitStructure.TIM_RepetitionCounter = 0;

TIM_TimeBaseInit(Specified_TIM_, &TIM_TimeBase_InitStructure);

//====================== TIM_OC_InitStructure ====================

TIM_OC_InitStructure.TIM_OCMode = TIM_OCMode_PWM1;

TIM_OC_InitStructure.TIM_OutputState = TIM_OutputState_Enable;

TIM_OC_InitStructure.TIM_OutputNState = TIM_OutputNState_Enable;

TIM_OC_InitStructure.TIM_OCPolarity = TIM_OCPolarity_High;

TIM_OC_InitStructure.TIM_OCNPolarity = TIM_OCNPolarity_High;

TIM_OC_InitStructure.TIM_OCIdleState = TIM_OCIdleState_Set;

TIM_OC_InitStructure.TIM_OCNIdleState = TIM_OCNIdleState_Reset;

TIM_OC_InitStructure.TIM_Pulse = Channel_Pulse;

TIM_OC1Init(Specified_TIM_, &TIM_OC_InitStructure);

TIM_OC1PreloadConfig(Specified_TIM_, TIM_OCPreload_Enable);

//===================== TIM_BDTR_InitStructure ===================

TIM_BDTR_InitStructure.TIM_OSSRState = TIM_OSSRState_Enable;

TIM_BDTR_InitStructure.TIM_OSSIState = TIM_OSSIState_Enable;

TIM_BDTR_InitStructure.TIM_LOCKLevel = TIM_LOCKLevel_1;

TIM_BDTR_InitStructure.TIM_AutomaticOutput = TIM_AutomaticOutput_Enable;

TIM_BDTR_InitStructure.TIM_Break = TIM_Break_Enable;

TIM_BDTR_InitStructure.TIM_BreakPolarity = TIM_BreakPolarity_Low;

TIM_BDTR_InitStructure.TIM_DeadTime = 11;

TIM_BDTRConfig(Specified_TIM_, &TIM_BDTR_InitStructure);

TIM_Cmd(Specified_TIM_, ENABLE);

TIM_CtrlPWMOutputs(Specified_TIM_, ENABLE);

}

main.c

#include

#include

#include

int main(void)

{

u32 TEMP = 10;

TIM_GPIO_Config();

TIM_Config();

SysTick_Init();

while(1)

{

Delay(1200);

Channel_Pulse -= TEMP;

TIM_SetCompare1(Specified_TIM_, Channel_Pulse);

if(Channel_Pulse <= 0)

{

while(Channel_Pulse <= 1200)

{

Delay(1200);

Channel_Pulse += TEMP;

TIM_SetCompare1(Specified_TIM_, Channel_Pulse);

}

}

}

}

通用计时器输出PWM 信号（按键可控PWM 占空比）

在该例程中，我将PWM 信号输出管脚连接至LED 管脚，以此观察PWM 信号输出是否正常。

注意：若要对LED 管脚进行初始化配置，对应LED 不能设置为熄灭，否则PWM 信号不能点亮LED

tim.h

/**

  ******************************************************************************

  * @file    tim.h

  * @author  Waao

  * @version V1.0.0

  * @date    1-Feb-2019

  * @brief   This file contains some board support package's definition for the TIM.

  *            

  ******************************************************************************

  * @attention

  *

  * None

*

  ******************************************************************************

  */

#ifndef __TIM_H_

#define __TIM_H_

#include

extern __IO u32 Channel_Pulse;

//============= General_TIM =============

#define Specified_General_TIM_          TIM2

#define General_TIM_CLK          RCC_APB1Periph_TIM2

//================ GPIO =================

#define General_TIM_OCPWM_GPIO_PORT GPIOA

#define General_TIM_OCPWM_GPIO_PIN GPIO_Pin_5

#define General_TIM_OCPWM_GPIO_PINSOURCE GPIO_PinSource5

#define General_TIM_OCPWM_GPIO_AF GPIO_AF_TIM2

#define General_TIM_OCPWM_GPIO_CLK RCC_AHB1Periph_GPIOA

void All_TIM_Config(void);

#endif

tim.c

/**

  ******************************************************************************

  * @file    tim.c

  * @author  Waao

  * @version V1.0.0

  * @date    1-Feb-2019

  * @brief   This file contains some board support package's functions for the TIM.

  *            

  ******************************************************************************

  * @attention

  *

  * None

*

  ******************************************************************************

  */

#include "tim.h"

__IO u32 Channel_Pulse = 1300;

/**

  * @brief  Initialize the General_TIM GPIO.

  * @param  None  

  * @retval None

  */

void General_GPIO_Config(void)

{

GPIO_InitTypeDef GENERAL_GPIO_InitStructure;

RCC_AHB1PeriphClockCmd(General_TIM_OCPWM_GPIO_CLK, ENABLE);

GENERAL_GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;

GENERAL_GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;

GENERAL_GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;

GENERAL_GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

GENERAL_GPIO_InitStructure.GPIO_Pin = General_TIM_OCPWM_GPIO_PIN;

GPIO_PinAFConfig(General_TIM_OCPWM_GPIO_PORT, General_TIM_OCPWM_GPIO_PINSOURCE, General_TIM_OCPWM_GPIO_AF);

GPIO_Init(General_TIM_OCPWM_GPIO_PORT, &GENERAL_GPIO_InitStructure);

}

/**

  * @brief  Initialize the General_TIM.

  * @param  None  

  * @retval None

  */

void General_TIM_Config(void)

{

TIM_TimeBaseInitTypeDef General_TIM_TimeBase_InitStructure;

TIM_OCInitTypeDef General_TIM_OC_InitStructure;

RCC_APB1PeriphClockCmd(General_TIM_CLK, ENABLE);

//=========== General_TIM_TimeBase_InitStructure ===========

General_TIM_TimeBase_InitStructure.TIM_CounterMode = TIM_CounterMode_Up;

General_TIM_TimeBase_InitStructure.TIM_Prescaler = 1800-1;

General_TIM_TimeBase_InitStructure.TIM_Period = 1024-1;

General_TIM_TimeBase_InitStructure.TIM_ClockDivision = TIM_CKD_DIV1;

TIM_TimeBaseInit(Specified_General_TIM_, &General_TIM_TimeBase_InitStructure);

//============== General_TIM_OC_InitStructure ==============