#ifndef __SHT20_H
#define __SHT20_H

#include "IIC.h"

#define   RESOLUTION_11b	0x81				//RH  11    TH   11
#define   RESOLUTION_12b	0x01				//RH  8     TH   12
#define   RESOLUTION_13b	0x80				//RH  10    TH   13
#define   RESOLUTION_14b	0x00				//RH  12    TH   14
#define   OTP_disEN				0x02				//不能?动OPT加载
#define   OTP_EN					0x00				//?动OPT加载
#define		RESh						16					//湿度解析?
#define		RESt						16					//温度解析?
#define		MeasureDelay		12					//解析延时时间  单位ms

/*================================================================
                           IIC address
================================================================*/
#define SHT20ADDR      0x80

/*================================================================
                 ACK  and  NACK  defination
================================================================*/
#define ACK            0
#define NACK           1

/*================================================================
                       HTU20D Command Code
================================================================*/
/*
  Command                         Code              Comment
  Trigger Temperature Measurement 0xe3              Hold master
  Trigger Humidity Measurement    0xe5              Hold master
  Trigger Temperature Measuremeng 0xf3              No Hold master
  Trigger Humidity Measurement    0xf5              No Hold master
  Write user register             0xe6
  Read user register              0xe7
  Soft Reset                      0xfe
*/
#define SOFT_RESET      0xfe
#define READ_REGISTER   0xe7
#define WRITE_REGISTER  0xe6
#define TRIGGER_TEMP    0xf3
#define TRIGGER_HUMI    0xf5


typedef struct _s_shtxx SHTXX;
struct _s_shtxx{
    float Temperature;
    float Humidity;
    uint8_t sndata1[8];
    uint8_t sndata2[6];
    uint32_t SN1; 
    uint32_t SN2;
    uint8_t statu;    //1为?常 0为找不到设??
    SOFT_IIC iic;
    void (*Init)(SHTXX *shtxx);
    uint8_t (*GetSerialNumber)(SHTXX *shtxx,uint8_t *pBuffer1,uint8_t *pBuffer2);
    uint8_t (*ReadTemp)(SHTXX *shtxx);
    uint8_t (*ReadHumi)(SHTXX *shtxx);
};
SHTXX new_shtxx(uint32_t scl_gpiox,uint32_t scl_gpio_pinx,uint32_t sda_gpiox,uint32_t sda_gpio_pinx);

#ifdef CMSIS_OS
#include "cmsis_os.h"
extern osThreadId Shtxx_thread_Handle;
osThreadId Create_Shtxx_thread(SHTXX *arg);
#endif

#endif //__SHT20_H