SHT10驱动程序，C语言，keil编写

以下是SHT10驱动程序的C语言代码，使用Keil进行编写：

#include "SHT10.h"

#define SCK_H()    SHT10_SCK_PORT->BSRR = SHT10_SCK_PIN
#define SCK_L()    SHT10_SCK_PORT->BRR = SHT10_SCK_PIN
#define DATA_H()   SHT10_DATA_PORT->BSRR = SHT10_DATA_PIN
#define DATA_L()   SHT10_DATA_PORT->BRR = SHT10_DATA_PIN
#define DATA_IN()  SHT10_DATA_PORT->CRL &= 0xFFFFFFF0
#define DATA_OUT() SHT10_DATA_PORT->CRL &= 0xFFFFFFF0; SHT10_DATA_PORT->CRL |= 0x00000001

void SHT10_Init(void)
{
    GPIO_InitTypeDef GPIO_InitStructure;

    RCC_APB2PeriphClockCmd(SHT10_SCK_RCC | SHT10_DATA_RCC, ENABLE);

    GPIO_InitStructure.GPIO_Pin = SHT10_SCK_PIN;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(SHT10_SCK_PORT, &GPIO_InitStructure);

    GPIO_InitStructure.GPIO_Pin = SHT10_DATA_PIN;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(SHT10_DATA_PORT, &GPIO_InitStructure);

    SCK_L();
    DATA_H();
}

static void SHT10_Reset(void)
{
    uint8_t i;

    DATA_OUT();
    DATA_H();
    SCK_L();
    delay_us(200);
    SCK_H();
    delay_us(2);
    DATA_L();
    delay_us(2);
    SCK_L();
    delay_us(200);
    SCK_H();
    delay_us(2);
    DATA_H();
    delay_us(2);
    SCK_L();

    DATA_IN();
    for (i = 0; i < 100; i++)
    {
        if ((SHT10_DATA_PORT->IDR & SHT10_DATA_PIN) == 0)
        {
            break;
        }
        delay_us(1);
    }
    if (i == 100)
    {
        return;
    }
    for (i = 0; i < 100; i++)
    {
        if ((SHT10_DATA_PORT->IDR & SHT10_DATA_PIN) != 0)
        {
            break;
        }
        delay_us(1);
    }
    if (i == 100)
    {
        return;
    }
    for (i = 0; i < 100; i++)
    {
        if ((SHT10_DATA_PORT->IDR & SHT10_DATA_PIN) == 0)
        {
            break;
        }
        delay_us(1);
    }
    if (i == 100)
    {
        return;
    }
}

static uint8_t SHT10_WriteByte(uint8_t byte)
{
    uint8_t i, ack;

    DATA_OUT();
    for (i = 0; i < 8; i++)
    {
        if (byte & 0x80)
        {
            DATA_H();
        }
        else
        {
            DATA_L();
        }
        byte <<= 1;
        SCK_H();
        delay_us(2);
        SCK_L();
    }

    DATA_IN();
    SCK_H();
    delay_us(2);
    ack = SHT10_DATA_PORT->IDR & SHT10_DATA_PIN;
    SCK_L();

    return ack;
}

static uint8_t SHT10_ReadByte(uint8_t ack)
{
    uint8_t i, byte;

    byte = 0;
    DATA_IN();
    for (i = 0; i < 8; i++)
    {
        byte <<= 1;
        SCK_H();
        delay_us(2);
        if (SHT10_DATA_PORT->IDR & SHT10_DATA_PIN)
        {
            byte |= 0x01;
        }
        SCK_L();
    }

    DATA_OUT();
    if (ack)
    {
        DATA_L();
    }
    else
    {
        DATA_H();
    }
    SCK_H();
    delay_us(2);
    SCK_L();

    return byte;
}

static uint16_t SHT10_ReadRawTemp(void)
{
    uint16_t temp;

    SHT10_Reset();
    SHT10_WriteByte(SHT10_MEASURE_TEMP);
    delay_ms(20);
    temp = SHT10_ReadByte(1);
    temp <<= 8;
    temp |= SHT10_ReadByte(0);
    SHT10_Reset();

    return temp;
}

static uint16_t SHT10_ReadRawHumidity(void)
{
    uint16_t humidity;

    SHT10_Reset();
    SHT10_WriteByte(SHT10_MEASURE_HUMIDITY);
    delay_ms(20);
    humidity = SHT10_ReadByte(1);
    humidity <<= 8;
    humidity |= SHT10_ReadByte(0);
    SHT10_Reset();

    return humidity;
}

float SHT10_ReadTemp(void)
{
    float temp;

    temp = SHT10_ReadRawTemp();
    temp *= 0.01;
    temp -= 40.0;

    return temp;
}

float SHT10_ReadHumidity(void)
{
    float humidity;

    humidity = SHT10_ReadRawHumidity();
    humidity *= 0.04;
    humidity -= 4.0;
    humidity += (0.648 * SHT10_ReadRawTemp()) - 12.0;

    return humidity;
}

该代码中包含以下函数：

- `SHT10_Init()`：SHT10初始化函数，配置SCK和DATA引脚并将SCK引脚置为低电平，DATA引脚置为高电平。
- `SHT10_Reset()`：SHT10复位函数，发送复位指令并等待SHT10应答。
- `SHT10_WriteByte()`：向SHT10写入一个字节数据，并等待SHT10应答。
- `SHT10_ReadByte()`：从SHT10读取一个字节数据，并向SHT10发送应答信号。
- `SHT10_ReadRawTemp()`：从SHT10读取温度原始数据。
- `SHT10_ReadRawHumidity()`：从SHT10读取湿度原始数据。
- `SHT10_ReadTemp()`：从SHT10读取温度值。
- `SHT10_ReadHumidity()`：从SHT10读取湿度值。

以上代码中的一些宏定义需要根据具体的硬件连接进行修改，例如SHT10_SCK_PORT、SHT10_SCK_PIN、SHT10_DATA_PORT、SHT10_DATA_PIN、SHT10_SCK_RCC和SHT10_DATA_RCC等。此外，该代码中还使用了一些延时函数，需要根据实际情况进行调整或使用其他方式代替。