msp-humidity.h

来自「MANTIS是由科罗拉多大学开发的传感器网络嵌入式操作系统。 这是mantis」· C头文件 代码 · 共 54 行

//  This file is part of MANTIS OS, Operating System
//  See http://mantis.cs.colorado.edu/
//
//  Copyright (C) 2003,2004,2005 University of Colorado, Boulder
//
//  This program is free software; you can redistribute it and/or
//  modify it under the terms of the mos license (see file LICENSE)
/** @file msp-humidity.h
 * @brief SHT11 device driver header
 * @author John Ledbetter
 * @date 07/12/2005
 */
#ifndef __MSP_HUMIDITY_H__
#define __MSP_HUMIDITY_H__

/* Pin definitions */
#define SHT11_POWER_PORT 1
#define SHT11_POWER_PIN  7
#define SHT11_POWER SHT11_POWER_PORT, SHT11_POWER_PIN

#define SHT11_SCLK_PORT  1
#define SHT11_SCLK_PIN   6
#define SHT11_SCLK SHT11_SCLK_PORT, SHT11_SCLK_PIN

#define SHT11_DATA_PORT  1
#define SHT11_DATA_PIN   5
#define SHT11_DATA SHT11_DATA_PORT, SHT11_DATA_PIN

/* Command bytes */
#define SHT11_CMD_READ_TEMP     3 
#define SHT11_CMD_READ_HUMIDITY 5
#define SHT11_CMD_READ_SR       7
#define SHT11_CMD_WRITE_SR      6
#define SHT11_CMD_SOFT_RESET    30

/* Status register masks */
#define SHT11_SR_HEATER  (1 << 2)
#define SHT11_SR_RELOAD  (1 << 1)
#define SHT11_SR_LOW_RES (1 << 0)

/* Function declarations */
void sht11_init(void);

/* arguments for dev_ioctl_MSP_HUMIDITY/TEMPERATURE */
#define SHT11_LOW_RES_ON   0x01
#define SHT11_LOW_RES_OFF  0x02
#define SHT11_HEATER_ON    0x04
#define SHT11_HEATER_OFF   0x08
#define SHT11_RELOAD_ON    0x10
#define SHT11_RELOAD_OFF   0x20


#endif