1 /* $NetBSD: sht3xvar.h,v 1.2 2025/01/23 19:14:46 brad Exp $ */ 2 3 /* 4 * Copyright (c) 2021 Brad Spencer <brad@anduin.eldar.org> 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 #ifndef _DEV_I2C_SHT3XVAR_H_ 20 #define _DEV_I2C_SHT3XVAR_H_ 21 22 #define SHT3X_NUM_SENSORS 2 23 #define SHT3X_HUMIDITY_SENSOR 0 24 #define SHT3X_TEMP_SENSOR 1 25 26 #define SHT3X_MODE_NAME 12 27 #define SHT3X_REP_NAME 7 28 #define SHT3X_RATE_NAME 8 29 30 struct sht3x_sc { 31 int sc_sht3xdebug; 32 device_t sc_dev; 33 i2c_tag_t sc_tag; 34 i2c_addr_t sc_addr; 35 kmutex_t sc_dying_mutex; /* for cleaning up */ 36 kmutex_t sc_threadmutex; /* for the measurement kthread */ 37 kmutex_t sc_mutex; /* for reading the i2c bus */ 38 kmutex_t sc_read_mutex; /* for from the data queue */ 39 kcondvar_t sc_condvar; /* for shutting down the thread */ 40 kcondvar_t sc_condreadready; /* when there is data to be read */ 41 kcondvar_t sc_cond_dying; /* interlock when cleaning up */ 42 struct lwp *sc_thread; 43 int sc_numsensors; 44 struct sysmon_envsys *sc_sme; 45 struct sysctllog *sc_sht3xlog; 46 envsys_data_t sc_sensors[SHT3X_NUM_SENSORS]; 47 bool sc_ignorecrc; 48 char sc_mode[SHT3X_MODE_NAME]; 49 bool sc_isperiodic; 50 char sc_repeatability[SHT3X_REP_NAME]; 51 char sc_periodic_rate[SHT3X_RATE_NAME]; 52 int sc_readattempts; 53 bool sc_heateron; 54 bool sc_stopping; 55 bool sc_initperiodic; 56 uint8_t sc_pbuffer[6]; 57 bool sc_dying; 58 bool sc_opened; 59 bool sc_wassingleshot; 60 bool sc_clockstretch; 61 pool_cache_t sc_readpool; 62 char *sc_readpoolname; 63 SIMPLEQ_HEAD(,sht3x_read_q) sc_read_queue; 64 }; 65 66 struct sht3x_read_q { 67 uint8_t measurement[6]; 68 SIMPLEQ_ENTRY(sht3x_read_q) read_q; 69 }; 70 71 struct sht3x_sensor { 72 const char *desc; 73 enum envsys_units type; 74 }; 75 76 struct sht3x_timing { 77 uint16_t cmd; 78 int typicaldelay; 79 }; 80 81 struct sht3x_periodic { 82 const char *repeatability; 83 const char *rate; 84 int sdelay; 85 uint16_t cmd; 86 }; 87 88 struct sht3x_repeatability { 89 const char *text; 90 uint16_t cmd; 91 uint16_t cscmd; 92 }; 93 94 #endif 95