163 lines
4 KiB
C
163 lines
4 KiB
C
/*
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sensor.h
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Author: pvvx
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*/
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#ifndef _SENSORS_H_
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#define _SENSORS_H_
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#include <stdint.h>
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// Timing
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#define SENSOR_POWER_TIMEOUT_ms 3
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#define SENSOR_RESET_TIMEOUT_ms 3
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#define SENSOR_MEASURING_TIMEOUT_ms 7
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/* CHT8310 https://github.com/pvvx/pvvx.github.io/blob/master/THB2/CHT8310.Advanced.Datasheet_Ver1.0.20230407.pdf */
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// I2C addres
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#define CHT8310_I2C_ADDR0 0x40
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#define CHT8310_I2C_ADDR1 0x44
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#define CHT8310_I2C_ADDR2 0x48
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#define CHT8310_I2C_ADDR3 0x4C
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// Registers
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#define CHT8310_REG_TMP 0x00
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#define CHT8310_REG_HMD 0x01
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#define CHT8310_REG_STA 0x02
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#define CHT8310_REG_CFG 0x03
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#define CHT8310_REG_CRT 0x04
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#define CHT8310_REG_TLL 0x05
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#define CHT8310_REG_TLM 0x06
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#define CHT8310_REG_HLL 0x07
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#define CHT8310_REG_HLM 0x08
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#define CHT8310_REG_OST 0x0f
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#define CHT8310_REG_RST 0xfc
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#define CHT8310_REG_MID 0xfe
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#define CHT8310_REG_VID 0xff
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// Status register mask
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#define CHT8310_STA_BUSY 0x8000
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#define CHT8310_STA_THI 0x4000
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#define CHT8310_STA_TLO 0x2000
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#define CHT8310_STA_HHI 0x1000
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#define CHT8310_STA_HLO 0x0800
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// Config register mask
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#define CHT8310_CFG_MASK 0x8000
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#define CHT8310_CFG_SD 0x4000
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#define CHT8310_CFG_ALTH 0x2000
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#define CHT8310_CFG_EM 0x1000
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#define CHT8310_CFG_EHT 0x0100
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#define CHT8310_CFG_TME 0x0080
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#define CHT8310_CFG_POL 0x0020
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#define CHT8310_CFG_ALT 0x0018
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#define CHT8310_CFG_CONSEC_FQ 0x0006
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#define CHT8310_CFG_ATM 0x0001
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#define CHT8310_ID 0x5959
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/* CHT8305 https://github.com/pvvx/pvvx.github.io/blob/master/BTH01/CHT8305.pdf */
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// I2C addres
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#define CHT8305_I2C_ADDR0 0x40
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#define CHT8305_I2C_ADDR1 0x41
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#define CHT8305_I2C_ADDR2 0x42
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#define CHT8305_I2C_ADDR3 0x43
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#define CHT8305_I2C_ADDR_MAX 0x43
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// Registers
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#define CHT8305_REG_TMP 0x00
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#define CHT8305_REG_HMD 0x01
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#define CHT8305_REG_CFG 0x02
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#define CHT8305_REG_ALR 0x03
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#define CHT8305_REG_VLT 0x04
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#define CHT8305_REG_MID 0xfe
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#define CHT8305_REG_VID 0xff
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// Config register mask
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#define CHT8305_CFG_SOFT_RESET 0x8000
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#define CHT8305_CFG_CLOCK_STRETCH 0x4000
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#define CHT8305_CFG_HEATER 0x2000
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#define CHT8305_CFG_MODE 0x1000
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#define CHT8305_CFG_VCCS 0x0800
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#define CHT8305_CFG_TEMP_RES 0x0400
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#define CHT8305_CFG_HUMI_RES 0x0300
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#define CHT8305_CFG_ALERT_MODE 0x00C0
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#define CHT8305_CFG_ALERT_PENDING 0x0020
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#define CHT8305_CFG_ALERT_HUMI 0x0010
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#define CHT8305_CFG_ALERT_TEMP 0x0008
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#define CHT8305_CFG_VCC_ENABLE 0x0004
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#define CHT8305_CFG_RESERVED 0x0003
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/*
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struct __attribute__((packed)) _cht8305_config_t{
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uint16_t reserved : 2;
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uint16_t vccen : 1;
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uint16_t talt : 1;
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uint16_t halt : 1;
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uint16_t aps : 1;
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uint16_t altm : 2;
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uint16_t h_res : 2;
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uint16_t t_res : 1;
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uint16_t vccs : 1;
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uint16_t mode : 1;
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uint16_t heater : 1;
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uint16_t clkstr : 1;
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uint16_t srst : 1;
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} cht8305_config_t;
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*/
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#define CHT8305_ID 0x5959
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/*
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---------------------------------------
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Датчик влажности AHT25
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---------------------------------------
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*/
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#define AHT30_I2C_ADDR 0x38
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#define AHT30_CMD_INI 0x0E1 // Initialization Command
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#define AHT30_CMD_TMS 0x0AC // Trigger Measurement Command
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#define AHT30_DATA_TMS 0x3300 // Trigger Measurement data
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#define AHT30_CMD_RST 0x0BA // Soft Reset Command
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typedef struct _measured_data_t {
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uint16_t count;
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int16_t temp; // x 0.01 C
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int16_t humi; // x 0.01 %
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uint16_t battery_mv; // mV
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uint8_t battery; // 0..100 %
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} measured_data_t;
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typedef struct _thsensor_coef_t {
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uint32_t temp_k;
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uint32_t humi_k;
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int16_t temp_z;
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int16_t humi_z;
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} thsensor_coef_t;
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extern const thsensor_coef_t def_thcoef;
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#if DEVICE == DEVICE_BTH01
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extern const thsensor_coef_t def_thcoef_aht30;
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#endif
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typedef struct _thsensor_cfg_t {
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thsensor_coef_t coef;
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uint16_t mid;
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uint16_t vid;
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uint8_t i2c_addr;
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} thsensor_cfg_t;
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extern measured_data_t measured_data;
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extern thsensor_cfg_t thsensor_cfg;
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void init_sensor(void);
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int read_sensor(void);
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//void init_i2c(void);
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//void deinit_i2c(void);
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#endif // _SENSORS_H_
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