58 lines
1.3 KiB
C
58 lines
1.3 KiB
C
/*
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* Copyright (c) 2018 Linaro Ltd.
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#ifndef ZEPHYR_DRIVERS_SENSOR_CCS811_CCS811_H_
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#define ZEPHYR_DRIVERS_SENSOR_CCS811_CCS811_H_
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#include <device.h>
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#include <gpio.h>
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#include <misc/util.h>
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/* Registers */
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#define CCS811_REG_STATUS 0x00
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#define CCS811_REG_MEAS_MODE 0x01
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#define CCS811_REG_ALG_RESULT_DATA 0x02
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#define CCS811_REG_RAW_DATA 0x03
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#define CCS811_REG_HW_ID 0x20
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#define CCS811_REG_HW_VERSION 0x21
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#define CCS811_REG_HW_VERSION_MASK 0xF0
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#define CCS811_REG_ERR 0xE0
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#define CCS811_REG_APP_START 0xF4
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#define CCS881_HW_ID 0x81
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#define CCS811_HW_VERSION 0x10
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/* Status register fields */
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#define CCS811_STATUS_ERROR BIT(0)
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#define CCS811_STATUS_DATA_READY BIT(3)
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#define CCS811_STATUS_APP_VALID BIT(4)
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#define CCS811_STATUS_FW_MODE BIT(7)
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/* Measurement modes */
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#define CCS811_MODE_IDLE 0x00
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#define CCS811_MODE_IAQ_1SEC 0x10
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#define CCS811_MODE_IAQ_10SEC 0x20
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#define CCS811_MODE_IAQ_60SEC 0x30
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#define CCS811_MODE_RAW_DATA 0x40
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#define CCS811_VOLTAGE_SCALE 1613
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#define CCS811_VOLTAGE_MASK 0x3FF
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struct ccs811_data {
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struct device *i2c;
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#ifdef CONFIG_CCS811_GPIO_WAKEUP
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struct device *gpio;
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#endif
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u16_t co2;
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u16_t voc;
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u8_t status;
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u8_t error;
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u16_t resistance;
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};
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#endif /* _SENSOR_CCS811_ */
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