121 lines
3.1 KiB
C
121 lines
3.1 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_SHT3XD_
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#define _SENSOR_SHT3XD_
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#include <device.h>
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#include <nanokernel.h>
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#include <gpio.h>
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#include <misc/nano_work.h>
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#define SHT3XD_I2C_ADDRESS CONFIG_SHT3XD_I2C_ADDR
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#define SHT3XD_CMD_FETCH 0xE000
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#define SHT3XD_CMD_ART 0x2B32
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#define SHT3XD_CMD_READ_STATUS 0xF32D
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#define SHT3XD_CMD_CLEAR_STATUS 0x3041
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#define SHT3XD_CMD_WRITE_TH_HIGH_SET 0x611D
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#define SHT3XD_CMD_WRITE_TH_HIGH_CLEAR 0x6116
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#define SHT3XD_CMD_WRITE_TH_LOW_SET 0x610B
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#define SHT3XD_CMD_WRITE_TH_LOW_CLEAR 0x6100
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#if CONFIG_SHT3XD_REPEATABILITY_LOW
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#define SHT3XD_REPEATABILITY_IDX 0
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#elif CONFIG_SHT3XD_REPEATABILITY_MEDIUM
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#define SHT3XD_REPEATABILITY_IDX 1
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#elif CONFIG_SHT3XD_REPEATABILITY_HIGH
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#define SHT3XD_REPEATABILITY_IDX 2
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#endif
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#if CONFIG_SHT3XD_MPS_05
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#define SHT3XD_MPS_IDX 0
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#elif CONFIG_SHT3XD_MPS_1
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#define SHT3XD_MPS_IDX 1
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#elif CONFIG_SHT3XD_MPS_2
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#define SHT3XD_MPS_IDX 2
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#elif CONFIG_SHT3XD_MPS_4
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#define SHT3XD_MPS_IDX 3
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#elif CONFIG_SHT3XD_MPS_10
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#define SHT3XD_MPS_IDX 4
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#endif
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#define SHT3XD_CLEAR_STATUS_WAIT_USEC 1000
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static const uint16_t sht3xd_measure_cmd[5][3] = {
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{0x202F, 0x2024, 0x2032},
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{0x212D, 0x2126, 0x2130},
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{0x222B, 0x2220, 0x2236},
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{0x2329, 0x2322, 0x2334},
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{0x272A, 0x2721, 0x2737}
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};
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static const int sht3xd_measure_wait[3] = {
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4000, 6000, 15000
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};
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struct sht3xd_data {
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struct device *i2c;
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uint16_t t_sample;
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uint16_t rh_sample;
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#ifdef CONFIG_SHT3XD_TRIGGER
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struct device *gpio;
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struct gpio_callback gpio_cb;
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uint16_t t_low;
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uint16_t t_high;
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uint16_t rh_low;
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uint16_t rh_high;
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sensor_trigger_handler_t handler;
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struct sensor_trigger trigger;
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#if defined(CONFIG_SHT3XD_TRIGGER_OWN_FIBER)
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char __stack fiber_stack[CONFIG_SHT3XD_FIBER_STACK_SIZE];
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struct nano_sem gpio_sem;
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#elif defined(CONFIG_SHT3XD_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_SHT3XD_TRIGGER */
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};
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#ifdef CONFIG_SHT3XD_TRIGGER
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int sht3xd_write_command(struct sht3xd_data *drv_data, uint16_t cmd);
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int sht3xd_write_reg(struct sht3xd_data *drv_data, uint16_t cmd,
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uint16_t val);
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int sht3xd_attr_set(struct device *dev,
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enum sensor_channel chan,
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enum sensor_attribute attr,
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const struct sensor_value *val);
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int sht3xd_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 sht3xd_init_interrupt(struct device *dev);
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#endif
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#define SYS_LOG_DOMAIN "SHT3XD"
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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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#endif /* _SENSOR_SHT3XD_ */
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