/* $NetBSD: sgp40var.h,v 1.1 2021/10/14 13:54:46 brad Exp $ */
/*
* Copyright (c) 2021 Brad Spencer <
[email protected]>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef _DEV_I2C_SGP40VAR_H_
#define _DEV_I2C_SGP40VAR_H_
#define SGP40_NUM_SENSORS 1
#define SGP40_VOC_SENSOR 0
#define SGP40_DEFAULT_TEMP_COMP 25
#define SGP40_DEFAULT_RH_COMP 50
struct sgp40_sc {
int sc_sgp40debug;
device_t sc_dev;
i2c_tag_t sc_tag;
i2c_addr_t sc_addr;
kmutex_t sc_threadmutex; /* for the measurement kthread */
kmutex_t sc_mutex; /* for reading the i2c bus */
kcondvar_t sc_condvar;
struct lwp *sc_thread;
int sc_numsensors;
struct sysmon_envsys *sc_sme;
struct sysctllog *sc_sgp40log;
envsys_data_t sc_sensors[SGP40_NUM_SENSORS];
uint16_t sc_voc;
bool sc_vocvalid;
bool sc_ignorecrc;
int sc_readattempts;
bool sc_stopping;
int sc_tempcomp;
int sc_rhcomp;
};
struct sgp40_sensor {
const char *desc;
enum envsys_units type;
};
struct sgp40_timing {
uint16_t cmd;
int typicaldelay;
};
#endif
