编写一个使用stm32控制pwm波输出的程序
时间: 2023-11-12 20:09:27 浏览: 41
可以的,以下是一个简单的使用stm32控制pwm波输出的程序示例:
```
#include "stm32f4xx.h"
#define LED_PIN GPIO_Pin_12
#define LED_GPIO_PORT GPIOD
#define LED_GPIO_CLK RCC_AHB1Periph_GPIOD
#define TIM_PERIOD ((SystemCoreClock / 1000000) - 1)
void GPIO_Configuration(void);
void TIM_Configuration(void);
int main(void)
{
GPIO_Configuration();
TIM_Configuration();
while (1)
{
}
}
void GPIO_Configuration(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_AHB1PeriphClockCmd(LED_GPIO_CLK, ENABLE);
GPIO_InitStructure.GPIO_Pin = LED_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_Init(LED_GPIO_PORT, &GPIO_InitStructure);
GPIO_PinAFConfig(LED_GPIO_PORT, GPIO_PinSource12, GPIO_AF_TIM4);
}
void TIM_Configuration(void)
{
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_OCInitTypeDef TIM_OCInitStructure;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM4, ENABLE);
TIM_TimeBaseStructInit(&TIM_TimeBaseStructure);
TIM_TimeBaseStructure.TIM_Period = TIM_PERIOD;
TIM_TimeBaseStructure.TIM_Prescaler = 0;
TIM_TimeBaseStructure.TIM_ClockDivision = 0;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM4, &TIM_TimeBaseStructure);
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;
TIM_OC1Init(TIM4, &TIM_OCInitStructure);
TIM_Cmd(TIM4, ENABLE);
}
```
这个程序使用了定时器 TIM4 和 GPIO 接口控制 STM32 的 PWM 波输出,其中的 LED_PIN 为控制 PWM 波输出的引脚,TIM_PERIOD 为设置的 PWM 波输出周期,可以根据实际需要进行修改。
希望以上代码能够对你有所帮助。