stm32hal库应用笔记之硬件IIC读写SHTC31000温湿度传感器

不多说上图:
百度完成数据手册 嘻嘻
这是SHTC31000芯片时序图：

我不会解释这个。

SHTC3.h

#ifndef SHTC3_SHTC3_H_ #define SHTC3_SHTC3_H_  #include "main.h"  typedef struct { 
         uint8_t HumidityMSB;  uint8_t HumidityLSB;  uint8_t HumidityCRC;   uint8_t temperatureMSB;  uint8_t temperatureLSB;  uint8_t temperatureCRC;  }SHTC3_MeasureData;   typedef struct { 
         uint8_t temp;  uint8_t hum; }SHTC31000;   extern SHTC31000 SHTC3_Data;  void SHTC3_init(); //void SHTC3_GoSleep()；//休眠 void SHTC3_Read(); void SHTC3_Refresh();////实时刷新当前温湿度  #endif /* SHTC3_SHTC3_H_ */ 

上代码：SHTC3.c

#include "SHTC3.h" #include "i2c.h" #include "retarget.h" #include "systemTimer.h"  #define SHTC3_Address 0x07 #define SHTC3_Aaddress_W 0xE0 #define SHTC3_Aaddress_R 0xE1
#define SHTC3_WakeUp 0X3517
#define SHTC3_Sleep 0xB098
#define SHTC3_MeasuringCmd 0x5C24

SHTC3_MeasureData  shtc3Read;

SHTC31000 SHTC3_Data;

void SHTC3_init()
{ 
       
	uint8_t cmdTemp[2];

	cmdTemp[0] = (uint8_t)(SHTC3_WakeUp>>8);
	cmdTemp[1] = (uint8_t)(SHTC3_WakeUp);
	HAL_I2C_Master_Transmit(&hi2c1, SHTC3_Aaddress_W, (uint8_t *)&cmdTemp, sizeof(cmdTemp), 1000);
	HAL_Delay(10);
	cmdTemp[0] = (uint8_t)(SHTC3_MeasuringCmd>>8);
	cmdTemp[1] = (uint8_t)(SHTC3_MeasuringCmd);
	HAL_I2C_Master_Transmit(&hi2c1, SHTC3_Aaddress_W, (uint8_t *)&cmdTemp, sizeof(cmdTemp), 1000);
	HAL_Delay(10);

}


//void SHTC3_GoSleep()
//{ 
       
// uint8_t cmdTemp[2];
//
// cmdTemp[0] = (uint8_t)(SHTC3_Sleep>>8);
// cmdTemp[1] = (uint8_t)(SHTC3_Sleep);
// HAL_I2C_Master_Transmit(&hi2c1, SHTC3_Aaddress_W, (uint8_t *)&cmdTemp, sizeof(cmdTemp), 1000);
//}

void SHTC3_Read()
{ 
       
	float hum,temp;

	HAL_I2C_Master_Receive(&hi2c1, SHTC3_Aaddress_R, (uint8_t *)&shtc3Read, sizeof(shtc3Read), 1000);

	hum = (shtc3Read.HumidityMSB << 8)|(shtc3Read.HumidityLSB);
	temp = (shtc3Read.temperatureMSB << 8 )|shtc3Read.temperatureLSB;
	SHTC3_Data.hum = (uint8_t)(100*((float)hum/65535));//湿度
	SHTC3_Data.temp = (uint8_t)((175*((float)temp/65535)) - 45);//温度
//
// printf(" SHTC3_Data.hum is %d",SHTC3_Data.hum);
// printf(" SHTC3_Data.temp is %d",SHTC3_Data.temp);

}


void SHTC3_Refresh()//实时刷新当前温度湿度
{ 
       
	  SHTC3_init();
	  SHTC3_Read();
}

主函数中调用void SHTC3_Refresh()//实时刷新当前温度湿度
SHTC3_Data.hum 湿度
SHTC3_Data.temp 温度