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/**
* @file
*
* @brief Temperature Sensor LM75A Driver API
*
* @ingroup I2CSensorLM75A
*/
/*
* Copyright (c) 2017 embedded brains GmbH. All rights reserved.
*
* embedded brains GmbH
* Dornierstr. 4
* 82178 Puchheim
* Germany
* <rtems@embedded-brains.de>
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#ifndef _DEV_I2C_SENSOR_LM75A_H
#define _DEV_I2C_SENSOR_LM75A_H
#include <dev/i2c/i2c.h>
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
/**
* @defgroup I2CSensorLM75A Temperature Sensor LM75A Driver
*
* @ingroup I2CDevice
*
* @brief Driver for NXP or Texas Instruments LM75A temperature sensor.
*
* @{
*/
int i2c_dev_register_sensor_lm75a(
const char *bus_path,
const char *dev_path,
uint16_t address
);
typedef enum {
SENSOR_LM75A_GET_CONF = I2C_DEV_IO_CONTROL,
SENSOR_LM75A_SET_CONF,
SENSOR_LM75A_CLEAR_AND_SET_CONF,
SENSOR_LM75A_GET_TEMP,
SENSOR_LM75A_GET_TOS,
SENSOR_LM75A_SET_TOS,
SENSOR_LM75A_GET_THYST,
SENSOR_LM75A_SET_THYST
} sensor_lm75a_command;
static inline int sensor_lm75a_get_conf(int fd, uint8_t *val)
{
return ioctl(fd, SENSOR_LM75A_GET_CONF, val);
}
static inline int sensor_lm75a_set_conf(int fd, uint8_t val)
{
return ioctl(fd, SENSOR_LM75A_SET_CONF, (void *)(uintptr_t) val);
}
static inline int sensor_lm75a_clear_and_set_conf(
int fd,
uint8_t clear,
uint8_t set
)
{
uint16_t clear_and_set = (uint16_t) (((uint16_t) set << 8) | clear);
return ioctl(
fd,
SENSOR_LM75A_CLEAR_AND_SET_CONF,
(void *)(uintptr_t) clear_and_set
);
}
static inline int sensor_lm75a_get_temp(int fd, int16_t *val)
{
return ioctl(fd, SENSOR_LM75A_GET_TEMP, val);
}
static inline int sensor_lm75a_get_temp_celsius(int fd, double *celsius)
{
int rv;
int16_t val;
rv = ioctl(fd, SENSOR_LM75A_GET_TEMP, &val);
*celsius = (((int) val) >> 5) * 0.125;
return rv;
}
static inline int sensor_lm75a_get_tos(int fd, uint16_t *val)
{
return ioctl(fd, SENSOR_LM75A_GET_TOS, val);
}
static inline int sensor_lm75a_set_tos(int fd, uint16_t val)
{
return ioctl(fd, SENSOR_LM75A_SET_TOS, (void *)(uintptr_t) val);
}
static inline int sensor_lm75a_get_thyst(int fd, uint16_t *val)
{
return ioctl(fd, SENSOR_LM75A_GET_THYST, val);
}
static inline int sensor_lm75a_set_thyst(int fd, uint16_t val)
{
return ioctl(fd, SENSOR_LM75A_SET_THYST, (void *)(uintptr_t) val);
}
/** @} */
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* _DEV_I2C_SENSOR_LM75A_H */
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