写一个基于STM32F103ZE的霍尔测速传感器测速显示库函数代码
时间: 2024-01-23 10:03:33 浏览: 25
以下是一个基于STM32F103ZE的霍尔测速传感器测速显示库函数代码,供您参考:
```
#include "stm32f10x.h"
#define HALL_SENSOR_PIN GPIO_Pin_0 // 定义霍尔测速传感器引脚
#define HALL_SENSOR_PORT GPIOA
void hall_sensor_init(void)
{
GPIO_InitTypeDef GPIO_InitStruct;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
GPIO_InitStruct.GPIO_Pin = HALL_SENSOR_PIN;
GPIO_InitStruct.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(HALL_SENSOR_PORT, &GPIO_InitStruct);
}
uint16_t prev_count = 0; // 记录上一次计数值
uint16_t current_count = 0; // 记录当前计数值
uint16_t speed; // 记录速度值
void TIM2_IRQHandler(void) // 定时器中断处理函数
{
if (TIM_GetITStatus(TIM2, TIM_IT_Update) != RESET)
{
current_count = TIM_GetCounter(TIM2); // 获取当前计数值
speed = (current_count - prev_count) * 60 / 2; // 计算速度值
prev_count = current_count; // 更新计数值
TIM_ClearITPendingBit(TIM2, TIM_IT_Update); // 清除定时器中断标志位
}
}
void hall_sensor_speed_display(void)
{
TIM_TimeBaseInitTypeDef TIM_InitStruct;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);
TIM_InitStruct.TIM_Period = 0xFFFF;
TIM_InitStruct.TIM_Prescaler = 7199;
TIM_InitStruct.TIM_ClockDivision = TIM_CKD_DIV1;
TIM_InitStruct.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM2, &TIM_InitStruct);
TIM_ITConfig(TIM2, TIM_IT_Update, ENABLE);
NVIC_InitTypeDef NVIC_InitStruct;
NVIC_InitStruct.NVIC_IRQChannel = TIM2_IRQn;
NVIC_InitStruct.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStruct.NVIC_IRQChannelSubPriority = 1;
NVIC_InitStruct.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStruct);
TIM_Cmd(TIM2, ENABLE);
while (1)
{
printf("Speed: %d rpm\n", speed); // 在串口上输出速度值
}
}
```
这是一个简单的库函数代码,实现了基于STM32F103ZE的霍尔测速传感器测速显示功能。您可以根据自己的需求进行修改和优化。