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38 #include "drv_digital_out.h"
39 #include "drv_i2c_master.h"
52 #define HTU21D_MAP_MIKROBUS( cfg, mikrobus ) \
53 cfg.scl = MIKROBUS( mikrobus, MIKROBUS_SCL ); \
54 cfg.sda = MIKROBUS( mikrobus, MIKROBUS_SDA )
61 #define HTU21D_RETVAL uint8_t
63 #define HTU21D_OK 0x00
64 #define HTU21D_INIT_ERROR 0xFF
72 #define HTU21D_I2C_ADDRESS 0x40
79 #define HTU21D_USER_REG_WRITE 0xE6
86 #define HTU21D_USER_REG_READ 0xE7
93 #define HTU21D_HEATER_REG_WRITE 0x51
100 #define HTU21D_HEATER_REG_READ 0x11
107 #define HTU21D_SOFT_RESET 0xFE
114 #define HTU21D_SERIAL1_READ1 0xFA
121 #define HTU21D_SERIAL1_READ2 0x0F
128 #define HTU21D_SERIAL2_READ1 0xFC
135 #define HTU21D_SERIAL2_READ2 0xC9
142 #define HTU21D_SI7013_CHIPID 0x0D
149 #define HTU21D_SI7020_CHIPID 0x14
156 #define HTU21D_SI7021_CHIPID 0x15
163 #define HTU21D_CHIPID 0x32
170 #define HTU21D_FIRMWARE_READ1 0x84
177 #define HTU21D_FIRMWARE_READ2 0xB8
184 #define HTU21D_FIRMWARE_V1 0xFF
191 #define HTU21D_FIRMWARE_V2 0x20
198 #define HTU21D_FORCE_READ_TEMP 0xFE
205 #define HTU21D_ERROR 0xFF
212 #define HTU21D_RES_RH12_TEMP14 0x00
219 #define HTU21D_RES_RH8_TEMP12 0x01
226 #define HTU21D_RES_RH10_TEMP13 0x80
233 #define HTU21D_RES_RH11_TEMP11 0x81
240 #define HTU21D_TRIG_HUMD_MEASURE_HOLD 0xE5
247 #define HTU21D_TRIG_HUMD_MEASURE_NOHOLD 0xF5
254 #define HTU21D_TRIG_TEMP_MEASURE_HOLD 0xE3
261 #define HTU21D_TRIG_TEMP_MEASURE_NOHOLD 0xF3
268 #define HTU21D_ON 0x04
275 #define HTU21D_OFF 0xFB
282 #define HTU21D_CRC8_POLYNOMINAL 0x1310
289 #define HTU21D_DATA_FILTER 0xFFFC
290 #define HTU21D_DATA_RESOLUTION 65536.0
291 #define HTU21D_TEMP_CALC_COEF 175.72
292 #define HTU21D_TEMP_STB_COEF -46.85
293 #define HTU21D_HUMI_CALC_COEF 125.0
294 #define HTU21D_HUMI_STB_COEF 6.0
pin_name_t scl
Definition: htu21d.h:326
float htu21d_get_temperature(htu21d_t *ctx)
Get temperature value function.
Click ctx object definition.
Definition: htu21d.h:308
void htu21d_cfg_setup(htu21d_cfg_t *cfg)
Config Object Initialization function.
void htu21d_generic_write(htu21d_t *ctx, uint8_t reg, uint8_t *data_buf, uint8_t len)
Generic write function.
pin_name_t sda
Definition: htu21d.h:327
#define HTU21D_RETVAL
Definition: htu21d.h:61
void htu21d_send_cmd(htu21d_t *ctx, uint8_t cmd_byte)
Send command function.
uint8_t i2c_address
Definition: htu21d.h:332
HTU21D_RETVAL htu21d_init(htu21d_t *ctx, htu21d_cfg_t *cfg)
Initialization function.
uint8_t slave_address
Definition: htu21d.h:315
void htu21d_generic_read(htu21d_t *ctx, uint8_t reg, uint8_t *data_buf, uint8_t len)
Generic read function.
uint32_t i2c_speed
Definition: htu21d.h:331
uint32_t htu21d_read_data(htu21d_t *ctx, uint8_t reg_adr)
Generic read 24-bit data function.
i2c_master_t i2c
Definition: htu21d.h:311
float htu21d_get_humidity(htu21d_t *ctx)
Get humidity value function.
Click configuration structure definition.
Definition: htu21d.h:323