/* $NetBSD: aht20var.h,v 1.1 2022/11/17 19:20:06 brad Exp $ */
/*
* Copyright (c) 2022 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_AHT20VAR_H_
#define _DEV_I2C_AHT20VAR_H_
#define AHT20_NUM_SENSORS 2
#define AHT20_HUMIDITY_SENSOR 0
#define AHT20_TEMP_SENSOR 1
struct aht20_sc {
int sc_aht20debug;
device_t sc_dev;
i2c_tag_t sc_tag;
i2c_addr_t sc_addr;
kmutex_t sc_mutex;
int sc_numsensors;
struct sysmon_envsys *sc_sme;
struct sysctllog *sc_aht20log;
envsys_data_t sc_sensors[AHT20_NUM_SENSORS];
bool sc_ignorecrc;
int sc_readattempts;
};
struct aht20_sensor {
const char *desc;
enum envsys_units type;
};
struct aht20_timing {
uint8_t cmd;
int typicaldelay;
};
#endif
