基于STMS32的DS18B20数据采集程序代码

以下是基于STMS32的DS18B20数据采集程序代码，仅供参考：

/* Includes */
#include "stm32f10x.h"

/* Private typedef */
typedef enum {RESET = 0, SET = !RESET} FlagStatus, ITStatus;
typedef enum {DISABLE = 0, ENABLE = !DISABLE} FunctionalState;

/* Private define */
#define DS18B20_PORT    GPIOA
#define DS18B20_PIN     GPIO_Pin_1

/* Private function prototypes */
void Delay_us(uint32_t us);
void DS18B20_Init(void);
void DS18B20_WriteBit(uint8_t bit);
uint8_t DS18B20_ReadBit(void);
void DS18B20_WriteByte(uint8_t byte);
uint8_t DS18B20_ReadByte(void);
void DS18B20_Start(void);
void DS18B20_Reset(void);
uint16_t DS18B20_GetTemp(void);

/* Private functions */
void Delay_us(uint32_t us) {
    uint32_t count = us * (SystemCoreClock / 1000000) / 5;
    while (count--);
}

void DS18B20_Init(void) {
    GPIO_InitTypeDef GPIO_InitStructure;
    
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
    
    GPIO_InitStructure.GPIO_Pin = DS18B20_PIN;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(DS18B20_PORT, &GPIO_InitStructure);
    
    DS18B20_Reset();
}

void DS18B20_WriteBit(uint8_t bit) {
    GPIO_ResetBits(DS18B20_PORT, DS18B20_PIN);
    Delay_us(2);
    if (bit) {
        GPIO_SetBits(DS18B20_PORT, DS18B20_PIN);
    }
    Delay_us(60);
    GPIO_SetBits(DS18B20_PORT, DS18B20_PIN);
}

uint8_t DS18B20_ReadBit(void) {
    uint8_t bit = 0;
    GPIO_ResetBits(DS18B20_PORT, DS18B20_PIN);
    Delay_us(2);
    GPIO_SetBits(DS18B20_PORT, DS18B20_PIN);
    Delay_us(15);
    bit = GPIO_ReadInputDataBit(DS18B20_PORT, DS18B20_PIN);
    Delay_us(45);
    return bit;
}

void DS18B20_WriteByte(uint8_t byte) {
    uint8_t i = 0;
    for (i = 0; i < 8; i++) {
        DS18B20_WriteBit((byte >> i) & 0x01);
    }
}

uint8_t DS18B20_ReadByte(void) {
    uint8_t byte = 0, i = 0;
    for (i = 0; i < 8; i++) {
        byte |= (DS18B20_ReadBit() << i);
    }
    return byte;
}

void DS18B20_Start(void) {
    DS18B20_Reset();
    DS18B20_WriteByte(0xCC);
    DS18B20_WriteByte(0x44);
}

void DS18B20_Reset(void) {
    GPIO_ResetBits(DS18B20_PORT, DS18B20_PIN);
    Delay_us(480);
    GPIO_SetBits(DS18B20_PORT, DS18B20_PIN);
    Delay_us(60);
    while (GPIO_ReadInputDataBit(DS18B20_PORT, DS18B20_PIN));
}

uint16_t DS18B20_GetTemp(void) {
    uint16_t temp = 0;
    uint8_t data[2] = {0};
    DS18B20_Start();
    DS18B20_Reset();
    DS18B20_WriteByte(0xCC);
    DS18B20_WriteByte(0xBE);
    data[0] = DS18B20_ReadByte();
    data[1] = DS18B20_ReadByte();
    temp = data[1] << 8 | data[0];
    temp = temp * 625 / 100;
    return temp;
}

/* Public functions */
int main(void) {
    uint16_t temp = 0;
    DS18B20_Init();
    while (1) {
        temp = DS18B20_GetTemp();
        // Do something with the temperature data
    }
}

该代码实现了DS18B20温度传感器的数据采集，通过调用 DS18B20_GetTemp() 函数获取温度值。在 main 函数中，可以通过温度值做出相应的处理。请注意，此代码仅供参考，具体实现应根据具体情况进行修改。