帮我写 STM32 标准库 使用定时器4 PB9控制270度舵机 PB6控制180度舵机的代码
时间: 2024-02-19 22:02:22 浏览: 119
好的,以下是使用定时器4控制舵机的代码,注意需要先初始化定时器4和GPIOB的相应引脚:
```c
#include "stm32f10x.h"
void TIM4_Configuration(void)
{
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_OCInitTypeDef TIM_OCInitStructure;
/* 使能定时器4时钟 */
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM4, ENABLE);
/* 定时器基本配置 */
TIM_TimeBaseStructure.TIM_Period = 20000; // 每个PWM周期为20ms
TIM_TimeBaseStructure.TIM_Prescaler = 7200 - 1; // 定时器预分频
TIM_TimeBaseStructure.TIM_ClockDivision = 0;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM4, &TIM_TimeBaseStructure);
/* PWM模式配置 */
TIM_OCStructInit(&TIM_OCInitStructure);
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_Pulse = 0;
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
/* PWM输出通道1配置 */
TIM_OC1Init(TIM4, &TIM_OCInitStructure);
TIM_OC1PreloadConfig(TIM4, TIM_OCPreload_Enable);
/* PWM输出通道3配置 */
TIM_OC3Init(TIM4, &TIM_OCInitStructure);
TIM_OC3PreloadConfig(TIM4, TIM_OCPreload_Enable);
/* 使能定时器4 */
TIM_Cmd(TIM4, ENABLE);
}
void Servo_Control(uint16_t angle1, uint16_t angle2)
{
uint16_t ccr1 = 1000 + (angle1 * 1000 / 180); // 将角度转换为对应的PWM占空比
uint16_t ccr3 = 1000 + (angle2 * 1000 / 270);
/* 设置PWM输出占空比 */
TIM_SetCompare1(TIM4, ccr1);
TIM_SetCompare3(TIM4, ccr3);
}
int main(void)
{
/* 初始化定时器4和GPIOB的相应引脚 */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_9;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOB, &GPIO_InitStructure);
TIM4_Configuration();
while(1)
{
Servo_Control(0, 0); // 控制舵机1和舵机2的角度
delay_ms(1000); // 延迟1秒
Servo_Control(90, 135);
delay_ms(1000);
Servo_Control(180, 270);
delay_ms(1000);
Servo_Control(90, 135);
delay_ms(1000);
}
}
```
其中,`Servo_Control()`函数用于控制舵机1和舵机2的角度,输入参数为舵机1和舵机2的角度值(范围为0-180度和0-270度)。`delay_ms()`函数为延迟函数,可根据自己的需要实现。在代码中,我们使用了GPIOB的引脚6和9作为舵机1和舵机2的控制引脚,并将它们设置为复用推挽输出模式。
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