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