初始版本

2026-04-23 13:56:52 +08:00
parent 6c611f1fa3
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+/***************************************************************
+*   File name    :  SHT20.h 
+*   Description  :  SHT20 Humidity and Temperature Sensors 
+*     M C U      :  STM32L051XX
+*   Compiler     :  Keil uVision V5.00a 
+*   Created by   :   
+*   Copyright    :  Copyright(c) 2018 
+*   Created data :  2018.03.16
+*   Modified data:  2018.03.16
+*   Vision       :  V1.0
+*****************************************************************/
+
+/*****************Function Declaration*************************/
+/*----define to easier to use-----*/
+#include <stdint.h>
+#include "bsp.h"
+
+typedef enum {
+	SHT20_IDLE,
+	SHT20_INIT,
+	SHT20_READ_TEMPR,
+	SHT20_READ_HUMI,
+	SHT20_READ_DATA
+}SHT20Status_m;
+
+typedef struct {
+	SHT20Status_m Sht20Status;
+	int Sht201mSDelayCnt;
+	float Tempreture;
+	float Humidity;
+	uint8_t Cmd;
+}SHT20Var_t;
+
+#define SHT20_Write_Add						0x80
+#define SHT20_Read_Add						0x81
+#define SHT20_Measurement_RH_HM		0XE5
+#define SHT20_Measurement_T_HM  	0XE3
+#define SHT20_Measurement_RH_NHM  0XF5  //非主机模式地址
+#define SHT20_Measurement_T_NHM		0XF3   //非主机模式地址
+#define SHT20_READ_REG						0XE7
+#define SHT20_WRITE_REG						0XE6
+#define SHT20_SOFT_RESET					0XFE
+
+//#define I2C_SOFTWARE
+
+#ifdef I2C_SOFTWARE
+
+#define SHT20_ADDRESS							0X80
+	
+#define	SHT20_SDA_IN()						I2C_SDA_IN()       //设置引脚输入模式   
+#define	SHT20_SDA_OUT()						I2C_SDA_OUT()     //设置引脚输出模式   
+#define	SHT20_SDA_GET()						I2C_SDA_GET()
+
+#define SHT20_I2C_SDA_LOW()				I2C_SDA_LOW()
+#define SHT20_I2C_SCL_LOW()				I2C_SCL_LOW()
+#define SHT20_I2C_SDA_HIGH()			I2C_SDA_HIGH()
+#define SHT20_I2C_SCL_HIGH()			I2C_SCL_HIGH()
+
+
+#define SHT20_I2C_LOW() {SHT20_I2C_SDA_LOW();SHT20_I2C_SCL_LOW();}  
+ 
+/*================================================================
+[  Name  ]void IO_I2CInit(void)
+[Function]I2C初始化 空闲状态
+[  Notes ]
+[ Author ]LZH
+[  Data  ]2016.06.22
+================================================================*/
+void IO_I2CInit(void);
+
+/*================================================================
+[  Name  ]I2CStart
+[Function]开始
+[  Notes ]
+[ Author ]LZH
+[  Data  ]2016.06.22
+================================================================*/
+void I2CStart(void);
+
+/*================================================================
+[  Name  ]I2CStop
+[Function]结束
+[  Notes ]
+[ Author ]LZH
+[  Data  ]2016.06.22
+================================================================*/
+void I2CStop(void);
+
+/*================================================================
+[  Name  ]I2C_Write_Byte
+[Function]写一个字节  返回ACK或NACK
+[  Notes ]从高到低发
+[ Author ]LZH
+[  Data  ]2016.06.22
+================================================================*/
+uint8_t I2C_Write_Byte(uint8_t Write_Byte);
+
+/*================================================================
+[  Name  ]I2C_Read_Byte
+[Function]读一个字节，入库参数用于控制应答状态 ACK或NAC
+[  Notes ]从高到低
+[ Author ]LZH
+[  Data  ]2016.06.22
+================================================================*/
+uint8_t I2C_Read_Byte(uint8_t AckValue);
+
+
+/*================================================================
+[  Name  ]SHT20_SoftReset
+[Function]SHT20软件复位
+[  Notes ]从高到低
+[ Author ]LZH
+[  Data  ]2016.06.22
+================================================================*/
+void SHT20_SoftReset(void);
+
+/*================================================================
+[  Name  ]SET_Resolution
+[Function]写寄存器 设置分辨率
+[  Notes ]从高到低
+[ Author ]LZH
+[  Data  ]2016.06.22
+================================================================*/
+void SET_Resolution(void);
+
+/*================================================================
+[  Name  ]ReadSht20
+[Function]非主机模式，读取温湿度值
+[  Notes ]入口控制读取温度或湿度
+[ Author ]LZH
+[  Data  ]2016.06.22
+================================================================*/
+float ReadSht20(char whatdo);
+
+float ReadSht20_Medium (void);
+
+#else
+
+#define SHT20_ADDRESS							0X40
+
+#define	Sht20_Reg_Write(DevAddr, RegData, rLen)													I2C_Write(DevAddr, NULL, RegData, rLen)
+#define	Sht20_Read(DevAddr, RegAddr, rData, rLen)												I2C_Read(DevAddr, RegAddr, rData, rLen)
+#define	Sht20_Delay(x)																  
+
+void SHT20_reset(void);
+
+
+#endif
+void SHT20_GetValue(float *Tempreture, float *Humidity);
+void SHT20Start(void);
+void SHT20LoopHandler(void);
+void SHT201mSRoutine(void);
+
+
+
+