stm32f407控制mg995舵机程序
时间: 2023-09-26 17:11:21 浏览: 104
以下是一个简单的基于STM32F407控制MG995舵机的程序,使用的是定时器PWM输出控制舵机角度:
```c
#include "stm32f4xx.h"
#include "stm32f4xx_tim.h"
void delay_ms(uint32_t ms)
{
for (uint32_t i = 0; i < (ms * 1000); ++i)
{
__NOP();
}
}
void init_pwm(void)
{
TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStruct;
TIM_OCInitTypeDef TIM_OCInitStruct;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM4, ENABLE);
TIM_TimeBaseStructInit(&TIM_TimeBaseInitStruct);
TIM_TimeBaseInitStruct.TIM_Period = 20000 - 1; // 20ms
TIM_TimeBaseInitStruct.TIM_Prescaler = 168 - 1; // 168MHz
TIM_TimeBaseInitStruct.TIM_ClockDivision = TIM_CKD_DIV1;
TIM_TimeBaseInitStruct.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM4, &TIM_TimeBaseInitStruct);
TIM_OCStructInit(&TIM_OCInitStruct);
TIM_OCInitStruct.TIM_OCMode = TIM_OCMode_PWM1;
TIM_OCInitStruct.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStruct.TIM_Pulse = 1500; // 1.5ms
TIM_OCInitStruct.TIM_OCPolarity = TIM_OCPolarity_High;
TIM_OC1Init(TIM4, &TIM_OCInitStruct);
TIM_Cmd(TIM4, ENABLE);
}
int main(void)
{
init_pwm();
while (1)
{
TIM4->CCR1 = 1000; // 1ms
delay_ms(1000);
TIM4->CCR1 = 1500; // 1.5ms
delay_ms(1000);
TIM4->CCR1 = 2000; // 2ms
delay_ms(1000);
}
}
```
在程序中,我们使用了STM32F407的TIM4定时器作为PWM输出控制舵机角度,通过修改TIM4的CCR1寄存器的值来改变PWM输出的占空比,从而控制舵机转动的角度。在程序的主循环中,我们简单地通过修改CCR1寄存器的值来控制舵机转动到不同的角度,然后延时一段时间等待舵机转动到目标角度。
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