stm32f103c6t6 通过pwm控制直流电机 写个代码
时间: 2023-09-24 14:06:33 浏览: 146
### 回答1:
代码示例如下:int main()
{
int PWM_PIN = GPIO_Pin_13; RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE); GPIO_InitTypeDef GPIO_InitStructure; GPIO_InitStructure.GPIO_Pin = PWM_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOB, &GPIO_InitStructure); RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE); TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_TimeBaseStructure.TIM_Period = 1000;
TIM_TimeBaseStructure.TIM_Prescaler = 7200;
TIM_TimeBaseStructure.TIM_ClockDivision = 0;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure); TIM_OCInitTypeDef TIM_OCInitStructure;
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
TIM_OCInitStructure.TIM_Pulse = 0; TIM_OC1Init(TIM1, &TIM_OCInitStructure); TIM_Cmd(TIM1, ENABLE);
TIM_CtrlPWMOutputs(TIM1, ENABLE); while(1)
{
for(int i=0; i<1000; i++)
{
TIM_SetCompare1(TIM1, i);
delay_ms(10);
}
}
}
### 回答2:
下面是使用STM32F103C6T6通过PWM控制直流电机的代码示例:
```c
#include "stm32f10x.h"
void PWM_Configuration(void);
void GPIO_Configuration(void);
int main(void)
{
GPIO_Configuration();
PWM_Configuration();
while (1) {
/* 运行你的代码逻辑 */
}
}
void GPIO_Configuration(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
/* 启用 GPIOA 时钟 */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
/* 配置 PA0 引脚为推挽输出模式 */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
}
void PWM_Configuration(void)
{
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_OCInitTypeDef TIM_OCInitStructure;
/* 启用定时器2时钟 */
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);
/* 定时器2配置 */
TIM_TimeBaseStructure.TIM_Period = 999; // 设置计数器周期为1000,即PWM频率为1000Hz
TIM_TimeBaseStructure.TIM_Prescaler = 71; // 设置预分频值为72,即定时器的时钟为72MHz/72=1MHz
TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);
/* PWM模式配置 */
TIM_OCStructInit(&TIM_OCInitStructure);
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; // 选择PWM模式1
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_Pulse = 500; // 设置PWM占空比初始值为50%
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
TIM_OC1Init(TIM2, &TIM_OCInitStructure); // 配置TIM2的通道1
TIM_Cmd(TIM2, ENABLE); // 启用定时器2
TIM_CtrlPWMOutputs(TIM2, ENABLE); // 使能定时器2 PWM输出
}
```
上述代码会使STM32F103C6T6的PA0引脚输出PWM信号,通过PWM信号控制直流电机的转速。其中,定时器2的时钟为72MHz,计数器周期为1000,即PWM频率为1000Hz。PWM占空比初始值为50%,可以根据需要进行调整。
### 回答3:
下面是一个使用STM32F103C6T6通过PWM控制直流电机的代码示例:
```c
#include "stm32f10x.h"
#define PWM_FREQUENCY 1000 // PWM的频率
#define PWM_DUTY_CYCLE 50 // PWM占空比(0-100)
int main(void)
{
// 初始化GPIO引脚
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE); // 使能GPIOA时钟
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0; // 使用PA0引脚控制直流电机
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; // 复用推挽输出
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; // IO口速度设置为50MHz
GPIO_Init(GPIOA, &GPIO_InitStructure); // 初始化GPIOA
// 初始化PWM
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE); // 使能TIM2时钟
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_TimeBaseStructure.TIM_Period = 1000 / PWM_FREQUENCY - 1; // PWM周期,计算方法为(PWM的频率)^-1得出的周期数
TIM_TimeBaseStructure.TIM_Prescaler = 72 - 1; // PWM时钟预分频,计算方法为主时钟频率/预分频数得出的值减1(假设主时钟频率为72MHz)
TIM_TimeBaseStructure.TIM_ClockDivision = 0; // 时间分割设置为0
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; // 计数模式为向上计数
TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure); // 初始化TIM2
TIM_OCInitTypeDef TIM_OCInitStructure;
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; // PWM模式1
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; // 输出使能
TIM_OCInitStructure.TIM_Pulse = (TIM_TimeBaseStructure.TIM_Period + 1) * PWM_DUTY_CYCLE / 100 - 1; // 计算得出的PWM脉冲宽度
TIM_OC1Init(TIM2, &TIM_OCInitStructure); // 初始化TIM2的通道1
TIM_Cmd(TIM2, ENABLE); // 使能TIM2
while (1)
{
// 这里可以在需要时更改PWM占空比,从而改变直流电机的转速或转向
}
}
```
这段代码利用STM32F103C6T6的TIM2模块产生PWM信号,通过改变PWM的占空比控制直流电机的转速或转向。在这个例子中,使用了PA0引脚作为PWM输出引脚,你可以根据自己的需要更改引脚配置。
阅读全文