/*
* Copyright (c) 2018 Peter Bigot Consulting, LLC
* Copyright (c) 2018 Linaro Ltd.
*
* SPDX-License-Identifier: Apache-2.0
*/
#ifndef ZEPHYR_DRIVERS_SENSOR_CCS811_CCS811_H_
#define ZEPHYR_DRIVERS_SENSOR_CCS811_CCS811_H_
#include <zephyr/device.h>
#include <zephyr/drivers/gpio.h>
#include <zephyr/sys/util.h>
#include <zephyr/drivers/sensor/ccs811.h>
/* Registers */
#define CCS811_REG_STATUS 0x00
#define CCS811_REG_MEAS_MODE 0x01
#define CCS811_REG_ALG_RESULT_DATA 0x02
#define CCS811_REG_RAW_DATA 0x03
#define CCS811_REG_ENV_DATA 0x05
#define CCS811_REG_THRESHOLDS 0x10
#define CCS811_REG_BASELINE 0x11
#define CCS811_REG_HW_ID 0x20
#define CCS811_REG_HW_VERSION 0x21
#define CCS811_REG_FW_BOOT_VERSION 0x23
#define CCS811_REG_FW_APP_VERSION 0x24
#define CCS811_REG_ERROR_ID 0xE0
#define CCS811_REG_APP_START 0xF4
#define CCS881_HW_ID 0x81
#define CCS811_HW_VERSION_MSK 0xF0
/* Measurement modes */
#define CCS811_MODE_RAW_DATA 0x40
#define CCS811_MODE_DATARDY 0x08
#define CCS811_MODE_THRESH 0x04
#define CCS811_RAW_VOLTAGE_POS 0
#define CCS811_RAW_VOLTAGE_MSK (0x3FF << CCS811_RAW_VOLTAGE_POS)
#define CCS811_RAW_VOLTAGE_SCALE (1650000U / (CCS811_RAW_VOLTAGE_MSK \
>> CCS811_RAW_VOLTAGE_POS))
#define CCS811_RAW_CURRENT_POS 10
#define CCS811_RAW_CURRENT_MSK (0x3F << CCS811_RAW_CURRENT_POS)
#define CCS811_RAW_CURRENT_SCALE 1
#define CCS811_CO2_MIN_PPM 400
#define CCS811_CO2_MAX_PPM 32767
struct ccs811_data {
const struct device *i2c;
#if DT_INST_NODE_HAS_PROP(0, irq_gpios)
const struct device *irq_gpio;
#ifdef CONFIG_CCS811_TRIGGER
const struct device *dev;
/*
* DATARDY is configured through SENSOR_CHAN_ALL.
* THRESH would be configured through SENSOR_CHAN_CO2.
*/
struct gpio_callback gpio_cb;
sensor_trigger_handler_t handler;
struct sensor_trigger trigger;
#if defined(CONFIG_CCS811_TRIGGER_OWN_THREAD)
K_KERNEL_STACK_MEMBER(thread_stack, CONFIG_CCS811_THREAD_STACK_SIZE);
struct k_sem gpio_sem;
struct k_thread thread;
#elif defined(CONFIG_CCS811_TRIGGER_GLOBAL_THREAD)
struct k_work work;
#endif
uint16_t co2_l2m;
uint16_t co2_m2h;
#endif /* CONFIG_CCS811_TRIGGER */
#endif
#if DT_INST_NODE_HAS_PROP(0, reset_gpios)
const struct device *reset_gpio;
#endif
#if DT_INST_NODE_HAS_PROP(0, wake_gpios)
const struct device *wake_gpio;
#endif
struct ccs811_result_type result;
uint8_t mode;
uint8_t app_fw_ver;
};
#ifdef CONFIG_CCS811_TRIGGER
int ccs811_mutate_meas_mode(const struct device *dev,
uint8_t set,
uint8_t clear);
int ccs811_set_thresholds(const struct device *dev);
int ccs811_attr_set(const struct device *dev,
enum sensor_channel chan,
enum sensor_attribute attr,
const struct sensor_value *val);
int ccs811_trigger_set(const struct device *dev,
const struct sensor_trigger *trig,
sensor_trigger_handler_t handler);
int ccs811_init_interrupt(const struct device *dev);
#endif /* CONFIG_CCS811_TRIGGER */
#endif /* _SENSOR_CCS811_ */