mirror of
https://gitlab.rtems.org/rtems/rtos/rtems.git
synced 2026-08-30 07:00:05 +08:00
Michal Lenc
7f98bd8469
More i2c drivers from cpukit to bsps/shared to allow them use BSP infrastructure if needed. The framework code i2c-bus.c and i2c-dev.c kept at its original location. Signed-off-by: Michal Lenc <michallenc@seznam.cz>
126 lines
4.0 KiB
C
126 lines
4.0 KiB
C
/* SPDX-License-Identifier: BSD-2-Clause */
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/*
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* Copyright (c) 2016-2017 Chris Johns <chrisj@rtems.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* TI TMP112
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* http://www.ti.com/product/TMP112
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*/
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#ifndef TI_TMP112_H
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#define TI_TMP112_H
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#include <dev/i2c/i2c.h>
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/*
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* Confirguration.
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*/
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#define TI_TMP112_CR_0_25Hz ( 0 << 6 )
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#define TI_TMP112_CR_1Hz ( 1 << 6 )
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#define TI_TMP112_CR_4Hz ( 2 << 6 ) /* default */
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#define TI_TMP112_CR_8Hz ( 3 << 6 )
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#define TI_TMP112_EM_NORMAL ( 0 << 4 ) /* default */
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#define TI_TMP112_EM_EXTENDED ( 1 << 4 )
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#define TI_TMP112_SD_ON ( 0 << 8 ) /* default */
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#define TI_TMP112_SD_SHUTDOWN ( 1 << 8 )
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#define TI_TMP112_TM_COMPARATOR ( 0 << 9 ) /* default */
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#define TI_TMP112_TM_INTERRUPT ( 1 << 9 )
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#define TI_TMP112_POL_ALERT_LOW ( 0 << 10 ) /* default */
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#define TI_TMP112_POL_ALERT_HIGH ( 1 << 10 )
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#define TI_TMP112_FQL_1 ( 0 << 11 ) /* default */
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#define TI_TMP112_FQL_2 ( 1 << 11 )
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#define TI_TMP112_FQL_4 ( 2 << 11 )
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#define TI_TMP112_FQL_6 ( 3 << 11 )
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/*
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* IO control interface.
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*/
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#define TI_TMP112_GET_TEMP ( I2C_DEV_IO_CONTROL + 0 )
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#define TI_TMP112_GET_TEMP_RAW ( I2C_DEV_IO_CONTROL + 1 )
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#define TI_TMP112_SET_CONFIG ( I2C_DEV_IO_CONTROL + 2 )
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#define TI_TMP112_SET_LOW_TEMP ( I2C_DEV_IO_CONTROL + 3 )
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#define TI_TMP112_SET_HIGH_TEMP ( I2C_DEV_IO_CONTROL + 4 )
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/*
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* Register the device.
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*/
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int i2c_dev_register_ti_tmp112(
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const char *bus_path,
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const char *dev_path,
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uint16_t address
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);
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/*
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* Get the temperature in degrees C x 10000. To print you would so:
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*
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* printf("Temperature is %3d.%04d\n", temp / 10000, temp % 10000);
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*
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* If the device is shutdown a single conversion is made waiting for the
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* conversion to complete.
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*/
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static inline int ti_tmp112_get_temperature( int fd, int *temp )
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{
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return ioctl( fd, TI_TMP112_GET_TEMP, temp );
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}
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/*
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* Get the temperature as the raw register value.
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*
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* If the device is shutdown a single conversion is made waiting for the
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* conversion to complete.
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*/
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static inline int ti_tmp112_get_temperature_raw( int fd, unsigned int *temp )
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{
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return ioctl( fd, TI_TMP112_GET_TEMP_RAW, temp );
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}
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/*
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* Set the configuration.
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*/
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static inline int ti_tmp112_adc_set_config( int fd, uint16_t config )
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{
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return ioctl( fd, TI_TMP112_SET_CONFIG, (void *) (uintptr_t) config );
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}
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/*
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* Set the low temperature.
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*/
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static inline int ti_tmp112_set_low_temperator( int fd, uint16_t temp )
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{
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return ioctl( fd, TI_TMP112_SET_LOW_TEMP, (void *) (uintptr_t) temp );
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}
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/*
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* Set the high temperature.
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*/
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static inline int ti_tmp112_adc_set_high_threshold( int fd, uint16_t level )
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{
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return ioctl( fd, TI_TMP112_SET_HIGH_TEMP, (void *) (uintptr_t) level );
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}
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#endif
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