用stm32f103c8t6控制舵机代码举例
时间: 2023-10-04 13:13:40 浏览: 94
以下是一个简单的使用STM32F103C8T6控制舵机的代码:
```
#include "stm32f10x.h"
#define SERVO_PIN GPIO_Pin_0
#define SERVO_PORT GPIOA
void delay_ms(uint32_t ms) {
SysTick->LOAD = (72000 * ms) - 1;
SysTick->VAL = 0;
SysTick->CTRL = SysTick_CTRL_ENABLE_Msk;
while ((SysTick->CTRL & SysTick_CTRL_COUNTFLAG_Msk) == 0);
SysTick->CTRL = 0;
}
void servo_init(void) {
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_InitStructure.GPIO_Pin = SERVO_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(SERVO_PORT, &GPIO_InitStructure);
}
void servo_set_position(uint8_t position) {
TIM_OCInitTypeDef TIM_OCInitStructure;
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_Pulse = position;
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
TIM_OC1Init(TIM2, &TIM_OCInitStructure);
TIM_OC1PreloadConfig(TIM2, TIM_OCPreload_Enable);
TIM_Cmd(TIM2, ENABLE);
}
int main(void) {
SystemInit();
servo_init();
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_TimeBaseStructure.TIM_Prescaler = 71;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseStructure.TIM_Period = 20000;
TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;
TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);
while (1) {
for (uint8_t i = 0; i < 180; i++) {
uint16_t position = (i / 180.0) * (2000 - 1000) + 1000;
servo_set_position(position);
delay_ms(10);
}
}
return 0;
}
```
代码中使用了STM32F103C8T6的定时器2(TIM2)来控制舵机的位置。在舵机初始化函数中,设置了PA0引脚为TIM2的通道1,并配置为复用推挽输出模式。在设置舵机位置函数中,先配置TIM2的通道1为PWM输出模式,并根据传入的位置参数设置PWM占空比。最后启动TIM2,使PWM输出生效。
在主函数中,使用一个循环不断设置舵机位置,以此让舵机转动。具体来说,循环从0到180,将角度值转换为PWM占空比值,然后将舵机设置为该位置,等待10毫秒后再进行下一次循环。这样就可以实现舵机的转动了。
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