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/* SPDX-License-Identifier: BSD-2-Clause */
/*
* Copyright (c) 2016-2017 Chris Johns <chrisj@rtems.org>
* All rights reserved.
*
* 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.
*
* 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.
*/
/*
* TI TMP112
* http://www.ti.com/product/TMP112
*/
#ifndef TI_TMP112_H
#define TI_TMP112_H
#include <dev/i2c/i2c.h>
/*
* Confirguration.
*/
#define TI_TMP112_CR_0_25Hz (0 << 6)
#define TI_TMP112_CR_1Hz (1 << 6)
#define TI_TMP112_CR_4Hz (2 << 6) /* default */
#define TI_TMP112_CR_8Hz (3 << 6)
#define TI_TMP112_EM_NORMAL (0 << 4) /* default */
#define TI_TMP112_EM_EXTENDED (1 << 4)
#define TI_TMP112_SD_ON (0 << 8) /* default */
#define TI_TMP112_SD_SHUTDOWN (1 << 8)
#define TI_TMP112_TM_COMPARATOR (0 << 9) /* default */
#define TI_TMP112_TM_INTERRUPT (1 << 9)
#define TI_TMP112_POL_ALERT_LOW (0 << 10) /* default */
#define TI_TMP112_POL_ALERT_HIGH (1 << 10)
#define TI_TMP112_FQL_1 (0 << 11) /* default */
#define TI_TMP112_FQL_2 (1 << 11)
#define TI_TMP112_FQL_4 (2 << 11)
#define TI_TMP112_FQL_6 (3 << 11)
/*
* IO control interface.
*/
#define TI_TMP112_GET_TEMP (I2C_DEV_IO_CONTROL + 0)
#define TI_TMP112_GET_TEMP_RAW (I2C_DEV_IO_CONTROL + 1)
#define TI_TMP112_SET_CONFIG (I2C_DEV_IO_CONTROL + 2)
#define TI_TMP112_SET_LOW_TEMP (I2C_DEV_IO_CONTROL + 3)
#define TI_TMP112_SET_HIGH_TEMP (I2C_DEV_IO_CONTROL + 4)
/*
* Register the device.
*/
int i2c_dev_register_ti_tmp112(const char* bus_path,
const char* dev_path,
uint16_t address);
/*
* Get the temperature in degrees C x 10000. To print you would so:
*
* printf("Temperature is %3d.%04d\n", temp / 10000, temp % 10000);
*
* If the device is shutdown a single conversion is made waiting for the
* conversion to complete.
*/
static inline int
ti_tmp112_get_temperature(int fd, int* temp)
{
return ioctl(fd, TI_TMP112_GET_TEMP, temp);
}
/*
* Get the temperature as the raw register value.
*
* If the device is shutdown a single conversion is made waiting for the
* conversion to complete.
*/
static inline int
ti_tmp112_get_temperature_raw(int fd, unsigned int* temp)
{
return ioctl(fd, TI_TMP112_GET_TEMP_RAW, temp);
}
/*
* Set the configuration.
*/
static inline int
ti_tmp112_adc_set_config(int fd, uint16_t config)
{
return ioctl(fd, TI_TMP112_SET_CONFIG, (void *)(uintptr_t) config);
}
/*
* Set the low temperature.
*/
static inline int
ti_tmp112_set_low_temperator(int fd, uint16_t temp)
{
return ioctl(fd, TI_TMP112_SET_LOW_TEMP, (void *)(uintptr_t) temp);
}
/*
* Set the high temperature.
*/
static inline int
ti_tmp112_adc_set_high_threshold(int fd, uint16_t level)
{
return ioctl(fd, TI_TMP112_SET_HIGH_TEMP, (void *)(uintptr_t) level);
}
#endif
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