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-rw-r--r--nuttx/include/nuttx/sensors/lm75.h133
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diff --git a/nuttx/include/nuttx/sensors/lm75.h b/nuttx/include/nuttx/sensors/lm75.h
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--- a/nuttx/include/nuttx/sensors/lm75.h
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-/****************************************************************************
- * include/nuttx/lm75.h
- *
- * Copyright (C) 2011-2012 Gregory Nutt. All rights reserved.
- * Author: Gregory Nutt <gnutt@nuttx.org>
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * 3. Neither the name NuttX nor the names of its contributors may be
- * used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- ****************************************************************************/
-
-#ifndef __NUTTX_SENSORS_LM75_H
-#define __NUTTX_SENSORS_LM75_H
-
-/****************************************************************************
- * Included Files
- ****************************************************************************/
-
-#include <nuttx/config.h>
-#include <nuttx/fs/ioctl.h>
-
-/****************************************************************************
- * Pre-Processor Definitions
- ****************************************************************************/
-/* Configuration ************************************************************
- * CONFIG_I2C - Enables support for I2C drivers
- * CONFIG_I2C_LM75 - Enables support for the LM-75 driver
- */
-
-#define CONFIG_LM75_BASEADDR 0x48
-
-/* IOCTL Commands ***********************************************************/
-
-#define SNIOC_READCONF _SNIOC(0x0001) /* Arg: uint8_t* pointer */
-#define SNIOC_WRITECONF _SNIOC(0x0002) /* Arg: uint8_t value */
-#define SNIOC_SHUTDOWN _SNIOC(0x0003) /* Arg: None */
-#define SNIOC_POWERUP _SNIOC(0x0004) /* Arg: None */
-#define SNIOC_FAHRENHEIT _SNIOC(0x0005) /* Arg: None */
-#define SNIOC_CENTIGRADE _SNIOC(0x0006) /* Arg: None */
-#define SNIOC_READTHYS _SNIOC(0x0007) /* Arg: b16_t* pointer */
-#define SNIOC_WRITETHYS _SNIOC(0x0008) /* Arg: b16_t value */
-#define SNIOC_READTOS _SNIOC(0x0009) /* Arg: b16_t* pointer */
-#define SNIOC_WRITRETOS _SNIOC(0x000a) /* Arg: b16_t value */
-
-/* LM-75 Register Definitions ***********************************************/
-/* LM-75 Registers addresses */
-
-#define LM75_TEMP_REG 0x00 /* Temperature Register */
-#define LM75_CONF_REG 0x01 /* Configuration Register */
-#define LM75_THYS_REG 0x02 /* Temperature Register */
-#define LM75_TOS_REG 0x03 /* Over-temp Shutdown Threshold Register */
-
-/* Configuration Register Bit Definitions */
-
-#define LM75_CONF_SHUTDOWN (1 << 0) /* Bit 0: Put LM75 goes in low power shutdown mode */
-#define LM75_CONF_INTMODE (1 << 1) /* Bit 1: 0=Comparator 1=Interrupt mode */
-#define LM75_CONF_POLARITY (1 << 2) /* Bit 2: 0=O.S. Active low 1=active high */
-#define LM75_CONF_FAULTQ (3) /* Bits 3-4: # faults before setting O.S. */
-
-/* NOTE: When temperature values are read, they are return as b16_t, fixed
- * precision integer values (see include/fixedmath.h).
- */
-
-/****************************************************************************
- * Global Data
- ****************************************************************************/
-
-/****************************************************************************
- * Global Function Prototypes
- ****************************************************************************/
-
-/****************************************************************************
- * Global Function Prototypes
- ****************************************************************************/
-
-#ifdef __cplusplus
-#define EXTERN extern "C"
-extern "C" {
-#else
-#define EXTERN extern
-#endif
-
-/****************************************************************************
- * Name: lm75_register
- *
- * Description:
- * Register the LM-75 character device as 'devpath'
- *
- * Input Parameters:
- * devpath - The full path to the driver to register. E.g., "/dev/temp0"
- * i2c - An instance of the I2C interface to use to communicate with LM75
- * addr - The I2C address of the LM-75. The base I2C address of the LM75
- * is 0x48. Bits 0-3 can be controlled to get 8 unique addresses from 0x48
- * through 0x4f.
- *
- * Returned Value:
- * Zero (OK) on success; a negated errno value on failure.
- *
- ****************************************************************************/
-
-EXTERN int lm75_register(FAR const char *devpath, FAR struct i2c_dev_s *i2c,
- uint8_t addr);
-
-#undef EXTERN
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* __NUTTX_SENSORS_LM75_H */