00. 目录

01. 输出比较相关API

1.1 TIM_OC1Init

/*** @brief  Initializes the TIMx Channel1 according to the specified*         parameters in the TIM_OCInitStruct.* @param  TIMx: where x can be  1 to 17 except 6 and 7 to select the TIM peripheral.* @param  TIM_OCInitStruct: pointer to a TIM_OCInitTypeDef structure*         that contains the configuration information for the specified TIM peripheral.* @retval None*/
void TIM_OC1Init(TIM_TypeDef* TIMx, TIM_OCInitTypeDef* TIM_OCInitStruct)
功能:根据 TIM_OCInitStruct 中指定的参数初始化外设 TIMx
参数:TIMx：x 可以是 2，3 或者 4，来选择 TIM 外设TIM_OCInitStruct：指向结构TIM_OCInitTypeDef 的指针，包含了TIMx时间基数单位的配置信息    
返回值:无      

1.2 TIM_OCInitTypeDef结构体

/** * @brief  TIM Output Compare Init structure definition  */typedef struct
{uint16_t TIM_OCMode;        /*!< Specifies the TIM mode.This parameter can be a value of @ref TIM_Output_Compare_and_PWM_modes */uint16_t TIM_OutputState;   /*!< Specifies the TIM Output Compare state.This parameter can be a value of @ref TIM_Output_Compare_state */uint16_t TIM_OutputNState;  /*!< Specifies the TIM complementary Output Compare state.This parameter can be a value of @ref TIM_Output_Compare_N_state@note This parameter is valid only for TIM1 and TIM8. */uint16_t TIM_Pulse;         /*!< Specifies the pulse value to be loaded into the Capture Compare Register. This parameter can be a number between 0x0000 and 0xFFFF */uint16_t TIM_OCPolarity;    /*!< Specifies the output polarity.This parameter can be a value of @ref TIM_Output_Compare_Polarity */uint16_t TIM_OCNPolarity;   /*!< Specifies the complementary output polarity.This parameter can be a value of @ref TIM_Output_Compare_N_Polarity@note This parameter is valid only for TIM1 and TIM8. */uint16_t TIM_OCIdleState;   /*!< Specifies the TIM Output Compare pin state during Idle state.This parameter can be a value of @ref TIM_Output_Compare_Idle_State@note This parameter is valid only for TIM1 and TIM8. */uint16_t TIM_OCNIdleState;  /*!< Specifies the TIM Output Compare pin state during Idle state.This parameter can be a value of @ref TIM_Output_Compare_N_Idle_State@note This parameter is valid only for TIM1 and TIM8. */
} TIM_OCInitTypeDef;

1.3 TIM_OCMode

/** @defgroup TIM_Output_Compare_and_PWM_modes * @{*/#define TIM_OCMode_Timing                  ((uint16_t)0x0000)
#define TIM_OCMode_Active                  ((uint16_t)0x0010)
#define TIM_OCMode_Inactive                ((uint16_t)0x0020)
#define TIM_OCMode_Toggle                  ((uint16_t)0x0030)
#define TIM_OCMode_PWM1                    ((uint16_t)0x0060)
#define TIM_OCMode_PWM2                    ((uint16_t)0x0070)

1.4 TIM_OutputState

/** @defgroup TIM_Output_Compare_state * @{*/#define TIM_OutputState_Disable            ((uint16_t)0x0000)
#define TIM_OutputState_Enable             ((uint16_t)0x0001)

1.5 TIM_OutputNState

/** @defgroup TIM_Output_Compare_N_state * @{*/#define TIM_OutputNState_Disable           ((uint16_t)0x0000)
#define TIM_OutputNState_Enable            ((uint16_t)0x0004)

1.6 TIM_OCPolarity

/** @defgroup TIM_Output_Compare_Polarity * @{*/#define TIM_OCPolarity_High                ((uint16_t)0x0000)
#define TIM_OCPolarity_Low                 ((uint16_t)0x0002)

1.7 TIM_OCNPolarity

/** @defgroup TIM_Output_Compare_N_Polarity * @{*/#define TIM_OCNPolarity_High               ((uint16_t)0x0000)
#define TIM_OCNPolarity_Low                ((uint16_t)0x0008)

1.8 TIM_OCPolarity

/** @defgroup TIM_Output_Compare_Idle_State * @{*/#define TIM_OCIdleState_Set                ((uint16_t)0x0100)
#define TIM_OCIdleState_Reset              ((uint16_t)0x0000)

1.9 TIM_OCNPolarity

/** @defgroup TIM_Output_Compare_N_Idle_State * @{*/#define TIM_OCNIdleState_Set               ((uint16_t)0x0200)
#define TIM_OCNIdleState_Reset             ((uint16_t)0x0000)

02. PWM实现呼吸灯接线图

03. PWM实现呼吸灯示例

pwm.h

#ifndef __PWM_H__#define __PWM_H__#include "stm32f10x.h"  void pwm_init(void);void pwm_setCompare(uint16_t compare1);#endif /*__PWM_H__*/

pwm.c

#include "pwm.h"//PWM初始化
void pwm_init(void)
{TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStruct;NVIC_InitTypeDef NVIC_InitStruct;GPIO_InitTypeDef GPIO_InitStruct;TIM_OCInitTypeDef TIM_OCInitStruct;//1. 开启时钟RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);//使能GPIOA时钟RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);//GPIO初始化  PA0GPIO_InitStruct.GPIO_Mode = GPIO_Mode_AF_PP ;GPIO_InitStruct.GPIO_Pin = GPIO_Pin_0;GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz;GPIO_Init(GPIOA, &GPIO_InitStruct);//2. 开启定时器2内部时钟TIM_InternalClockConfig(TIM2);//3. 初始化定时器TIM_TimeBaseInitStruct.TIM_Period = 100 - 1;	  //ARRTIM_TimeBaseInitStruct.TIM_Prescaler = 720 - 1;  //预分频  PSCTIM_TimeBaseInitStruct.TIM_ClockDivision = TIM_CKD_DIV1;TIM_TimeBaseInitStruct.TIM_CounterMode = TIM_CounterMode_Up;TIM_TimeBaseInitStruct.TIM_RepetitionCounter = 0; //高级定时器使用TIM_TimeBaseInit(TIM2, &TIM_TimeBaseInitStruct);TIM_OCStructInit(&TIM_OCInitStruct);TIM_OCInitStruct.TIM_OCMode = TIM_OCMode_PWM1;TIM_OCInitStruct.TIM_OCPolarity = TIM_OCPolarity_High;TIM_OCInitStruct.TIM_OutputState = TIM_OutputState_Enable;TIM_OCInitStruct.TIM_Pulse = 20;	//CCRTIM_OC1Init(TIM2, &TIM_OCInitStruct);//7. 使能定时器TIM_Cmd(TIM2, ENABLE);
}void pwm_setCompare(uint16_t compare1)
{TIM_SetCompare1(TIM2, compare1);
}

main.c

#include "stm32f10x.h"#include "delay.h"
#include "oled.h"
#include "pwm.h"void pwm_setCompare(uint16_t compare1);int16_t num;uint16_t i;int main(void){		 //初始化OLED_Init();NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);pwm_init();OLED_ShowString(1, 1, "num:");while (1){for (i = 0; i <= 100; i++){pwm_setCompare(i);delay_ms(10);}for (i = 0; i <= 100; i++){pwm_setCompare(100 - i);delay_ms(10);}}return 0;}

04. PWM驱动舵机接线图

05. PWM驱动舵机示例

pwm.h

#ifndef __PWM_H
#define __PWM_Hvoid PWM_Init(void);
void PWM_SetCompare2(uint16_t Compare);#endif

pwm.c

#include "stm32f10x.h"                  // Device headervoid PWM_Init(void)
{RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);GPIO_InitTypeDef GPIO_InitStructure;GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1;GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;GPIO_Init(GPIOA, &GPIO_InitStructure);TIM_InternalClockConfig(TIM2);TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure;TIM_TimeBaseInitStructure.TIM_ClockDivision = TIM_CKD_DIV1;TIM_TimeBaseInitStructure.TIM_CounterMode = TIM_CounterMode_Up;TIM_TimeBaseInitStructure.TIM_Period = 20000 - 1;		//ARRTIM_TimeBaseInitStructure.TIM_Prescaler = 72 - 1;		//PSCTIM_TimeBaseInitStructure.TIM_RepetitionCounter = 0;TIM_TimeBaseInit(TIM2, &TIM_TimeBaseInitStructure);TIM_OCInitTypeDef TIM_OCInitStructure;TIM_OCStructInit(&TIM_OCInitStructure);TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;TIM_OCInitStructure.TIM_Pulse = 0;		//CCRTIM_OC2Init(TIM2, &TIM_OCInitStructure);TIM_Cmd(TIM2, ENABLE);
}void PWM_SetCompare2(uint16_t Compare)
{TIM_SetCompare2(TIM2, Compare);
}

Servo.h

#ifndef __SERVO_H
#define __SERVO_Hvoid Servo_Init(void);
void Servo_SetAngle(float Angle);#endif

Servo.c

#include "stm32f10x.h"                  // Device header
#include "PWM.h"void Servo_Init(void)
{PWM_Init();
}void Servo_SetAngle(float Angle)
{PWM_SetCompare2(Angle / 180 * 2000 + 500);
}

main.c

#include "stm32f10x.h"                  // Device header
#include "Delay.h"
#include "OLED.h"
#include "Servo.h"
#include "Key.h"uint8_t KeyNum;
float Angle;int main(void)
{OLED_Init();Servo_Init();Key_Init();OLED_ShowString(1, 1, "Angle:");while (1){KeyNum = Key_GetNum();if (KeyNum == 1){Angle += 30;if (Angle > 180){Angle = 0;}}Servo_SetAngle(Angle);OLED_ShowNum(1, 7, Angle, 3);}
}

06. PWM驱动直流电机接线图

07. PWM驱动直流电机示例

pwm.h

#ifndef __PWM_H__#define __PWM_H__#include "stm32f10x.h"  void pwm_init(void);void pwm_setCompare(uint16_t compare1);#endif /*__PWM_H__*/

pwm.c

#include "pwm.h"//PWM初始化
void pwm_init(void)
{TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStruct;GPIO_InitTypeDef GPIO_InitStruct;TIM_OCInitTypeDef TIM_OCInitStruct;//1. 开启时钟RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);//使能GPIOA时钟RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);//GPIO初始化  PA0GPIO_InitStruct.GPIO_Mode = GPIO_Mode_AF_PP ;GPIO_InitStruct.GPIO_Pin = GPIO_Pin_2;GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz;GPIO_Init(GPIOA, &GPIO_InitStruct);//2. 开启定时器2内部时钟TIM_InternalClockConfig(TIM2);//3. 初始化定时器TIM_TimeBaseInitStruct.TIM_Period = 100 - 1;	  //ARRTIM_TimeBaseInitStruct.TIM_Prescaler = 36 - 1;  //预分频  PSCTIM_TimeBaseInitStruct.TIM_ClockDivision = TIM_CKD_DIV1;TIM_TimeBaseInitStruct.TIM_CounterMode = TIM_CounterMode_Up;TIM_TimeBaseInitStruct.TIM_RepetitionCounter = 0; //高级定时器使用TIM_TimeBaseInit(TIM2, &TIM_TimeBaseInitStruct);TIM_OCStructInit(&TIM_OCInitStruct);TIM_OCInitStruct.TIM_OCMode = TIM_OCMode_PWM1;TIM_OCInitStruct.TIM_OCPolarity = TIM_OCPolarity_High;TIM_OCInitStruct.TIM_OutputState = TIM_OutputState_Enable;TIM_OCInitStruct.TIM_Pulse = 0;	//CCRTIM_OC3Init(TIM2, &TIM_OCInitStruct);//7. 使能定时器TIM_Cmd(TIM2, ENABLE);
}void pwm_setCompare(uint16_t compare)
{TIM_SetCompare3(TIM2, compare);
}

motor.h

#ifndef __MOTOR_H__#define __MOTOR_H__#include "stm32f10x.h"                  // Device headervoid motor_init(void);void motor_setSpeed(int8_t speed);#endif

motor.c

#include "motor.h"
#include "pwm.h"void motor_init(void)
{GPIO_InitTypeDef GPIO_InitStruct;//使能GPIOA时钟RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);//GPIO初始化  PA0GPIO_InitStruct.GPIO_Mode = GPIO_Mode_Out_PP ;GPIO_InitStruct.GPIO_Pin = GPIO_Pin_4 | GPIO_Pin_5;GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz;GPIO_Init(GPIOA, &GPIO_InitStruct);pwm_init();
}void motor_setSpeed(int8_t speed)
{if (speed >= 0){GPIO_SetBits(GPIOA, GPIO_Pin_4);GPIO_ResetBits(GPIOA, GPIO_Pin_5);pwm_setCompare(speed);}else{GPIO_ResetBits(GPIOA, GPIO_Pin_4);GPIO_SetBits(GPIOA, GPIO_Pin_5);pwm_setCompare(-speed);}}

main.c

#include "stm32f10x.h"#include "delay.h"
#include "oled.h"
#include "motor.h"
#include "key.h"uint8_t keyNum;int8_t speed = 0;int main(void){		 //初始化OLED_Init();motor_init();key_init();OLED_ShowString(1, 1, "speed:");while (1){keyNum = key_scan();if (1 == keyNum){speed += 20;if (speed > 100){speed = -100;}}motor_setSpeed(speed);OLED_ShowSignedNum(1, 7, speed, 3);}}

08. 源码下载

11-PWM驱动呼吸灯.rar

12-PWM驱动舵机.rar

13-PWM驱动直流电机.rar

09. 附录

参考: 【STM32】江科大STM32学习笔记汇总