92 lines
2.2 KiB
C
92 lines
2.2 KiB
C
/*
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* Copyright (c) 2016 Intel Corporation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef __SENSOR_HTS221_H__
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#define __SENSOR_HTS221_H__
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#include <device.h>
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#include <misc/util.h>
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#include <stdint.h>
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#include <gpio.h>
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#include <misc/nano_work.h>
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#define SYS_LOG_DOMAIN "HTS221"
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#define SYS_LOG_LEVEL CONFIG_SYS_LOG_SENSOR_LEVEL
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#include <misc/sys_log.h>
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#define HTS221_I2C_ADDR 0x5F
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#define HTS221_AUTOINCREMENT_ADDR BIT(7)
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#define HTS221_REG_WHO_AM_I 0x0F
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#define HTS221_CHIP_ID 0xBC
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#define HTS221_REG_CTRL1 0x20
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#define HTS221_PD_BIT BIT(7)
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#define HTS221_BDU_BIT BIT(3)
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#define HTS221_ODR_SHIFT 0
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#define HTS221_REG_CTRL3 0x22
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#define HTS221_DRDY_EN BIT(2)
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#define HTS221_REG_DATA_START 0x28
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#define HTS221_REG_CONVERSION_START 0x30
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static const char * const hts221_odr_strings[] = {
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"1", "7", "12.5"
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};
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struct hts221_data {
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struct device *i2c;
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int16_t rh_sample;
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int16_t t_sample;
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uint8_t h0_rh_x2;
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uint8_t h1_rh_x2;
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uint16_t t0_degc_x8;
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uint16_t t1_degc_x8;
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int16_t h0_t0_out;
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int16_t h1_t0_out;
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int16_t t0_out;
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int16_t t1_out;
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#ifdef CONFIG_HTS221_TRIGGER
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struct device *gpio;
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struct gpio_callback gpio_cb;
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struct sensor_trigger data_ready_trigger;
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sensor_trigger_handler_t data_ready_handler;
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#if defined(CONFIG_HTS221_TRIGGER_OWN_FIBER)
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char __stack fiber_stack[CONFIG_HTS221_FIBER_STACK_SIZE];
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struct nano_sem gpio_sem;
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#elif defined(CONFIG_HTS221_TRIGGER_GLOBAL_FIBER)
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struct nano_work work;
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struct device *dev;
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#endif
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#endif /* CONFIG_HTS221_TRIGGER */
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};
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#ifdef CONFIG_HTS221_TRIGGER
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int hts221_trigger_set(struct device *dev,
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const struct sensor_trigger *trig,
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sensor_trigger_handler_t handler);
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int hts221_init_interrupt(struct device *dev);
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#endif
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#endif /* __SENSOR_HTS221__ */
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