108 lines
3.1 KiB
C
108 lines
3.1 KiB
C
/*
|
|
* 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 <device.h>
|
|
#include <drivers/gpio.h>
|
|
#include <sys/util.h>
|
|
#include <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 {
|
|
struct device *i2c;
|
|
#if DT_INST_NODE_HAS_PROP(0, irq_gpios)
|
|
struct device *irq_gpio;
|
|
#ifdef CONFIG_CCS811_TRIGGER
|
|
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_THREAD_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)
|
|
struct device *reset_gpio;
|
|
#endif
|
|
#if DT_INST_NODE_HAS_PROP(0, wake_gpios)
|
|
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(struct device *dev,
|
|
uint8_t set,
|
|
uint8_t clear);
|
|
|
|
int ccs811_set_thresholds(struct device *dev);
|
|
|
|
int ccs811_attr_set(struct device *dev,
|
|
enum sensor_channel chan,
|
|
enum sensor_attribute attr,
|
|
const struct sensor_value *val);
|
|
|
|
int ccs811_trigger_set(struct device *dev,
|
|
const struct sensor_trigger *trig,
|
|
sensor_trigger_handler_t handler);
|
|
|
|
int ccs811_init_interrupt(struct device *dev);
|
|
|
|
#endif /* CONFIG_CCS811_TRIGGER */
|
|
|
|
#endif /* _SENSOR_CCS811_ */
|