SHT31温湿度传感器的51单片机程序(SH79F1615中颖芯片) -

/*所有包含的头文件*/
#include <SH79F1615.H>
#include <intrins.h>
#include "myiic.h"
#include "sht30.h"
//==========================================================================//
/**************************************************************************
* 函数名： main
* 函数功能：主函数
* 输入参数：无
* 返回参数：无
* 备注：
***************************************************************************/
void main(void)
{
IIC_Init();
while(1)
{
Read_sht30();
Convert_sht30();
delay_ms(5000);
}
}

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#include "sht30.h"
#include "myiic.h"
unsigned char BUFt[2]={0};
unsigned char BUFh[2]={0};
unsigned int hum_value=0;
unsigned int hum_sum=0;
unsigned char count=0;
/*unsigned char crc8(char *buf)
{
unsigned char i,j,crc;
crc=0;
for(j=1;j<7;j++)
{
crc=crc^(*buf);
for(i = 8; i > 0; i--)
{
if(crc & 0x80)
{
crc = (crc<< 1)^0x31;
}
else
{
crc = crc<< 1;
}
}
buf++;
}
return crc;
}*/
unsigned char Get_Crc8(unsigned char *ptr,unsigned int len)
{
unsigned char crc;
unsigned char i;
crc=0;
while(len--)
{
crc^=*ptr++;
for(i=0;i<8;i++)
{
if(crc&0x01)crc=(crc>>1)^0x8C;
else crc >>= 1;
}
}
return crc;
}
void Cmd_Write_sht30(unsigned char msb,unsigned char lsb)
{
IIC_Start(); //起始信号
IIC_Send_Byte(0x88+0); //发送设备地址+写信号
while(IIC_Wait_Ack()); //从机应答
IIC_Send_Byte(msb); //发送命令
while(IIC_Wait_Ack());
IIC_Send_Byte(lsb); //发送命令
while(IIC_Wait_Ack());
IIC_Stop(); //发送停止信号
delay_ms(5);
}
unsigned char crc1=0;
unsigned char crc2=0;
unsigned char tem ;
unsigned char hum ;
void Read_sht30(void)
{
unsigned char a=0;
Cmd_Write_sht30(0x20,0x32); //数据采集频率1 m/s
delay_ms(5000);
IIC_Start(); //起始信号
IIC_Send_Byte(0x88+1); //发送设备地址+读信号
while(IIC_Wait_Ack());
BUFt[0]=IIC_Read_Byte(1); //发送ACK
BUFt[1]=IIC_Read_Byte(1); //发送ACK
a=IIC_Read_Byte(1); //
BUFh[0]=IIC_Read_Byte(1); //发送ACK
BUFh[1]=IIC_Read_Byte(1); //发送ACK
IIC_Stop(); //发送停止信号
delay_ms(5);
}
//数据转换
void Convert_sht30(void)
{
tem=((unsigned long)175*(BUFt[0]*256+BUFt[1]))/65535-45; //摄氏度
hum=((unsigned long)100*(BUFh[0]*256+BUFh[1]))/65535;
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