| /* |
| * Copyright (c) 2018 Alexander Wachter. |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| #ifndef ZEPHYR_DRIVERS_SENSOR_ENS210_ENS210_H_ |
| #define ZEPHYR_DRIVERS_SENSOR_ENS210_ENS210_H_ |
| |
| #include <zephyr/device.h> |
| #include <zephyr/drivers/i2c.h> |
| #include <zephyr/drivers/gpio.h> |
| #include <zephyr/sys/util.h> |
| |
| /* Registers */ |
| #define ENS210_REG_PART_ID 0x00 |
| #define ENS210_REG_UID 0x04 |
| #define ENS210_REG_SYS_CTRL 0x10 |
| #define ENS210_REG_SYS_STAT 0x11 |
| #define ENS210_REG_SENS_RUN 0x21 |
| #define ENS210_REG_SENS_START 0x22 |
| #define ENS210_REG_SENS_STOP 0x23 |
| #define ENS210_REG_SENS_STAT 0x24 |
| #define ENS210_REG_T_VAL 0x30 |
| #define ENS210_REG_H_VAL 0x33 |
| |
| #define ENS210_PART_ID 0x0210 |
| |
| #if defined CONFIG_ENS210_TEMPERATURE_OFF |
| #define ENS210_T_RUN 0 |
| #define ENS210_T_START 0 |
| #elif defined CONFIG_ENS210_TEMPERATURE_SINGLE |
| #define ENS210_T_RUN 0 |
| #define ENS210_T_START 1 |
| #elif defined CONFIG_ENS210_TEMPERATURE_CONTINUOUS |
| #define ENS210_T_RUN 1 |
| #define ENS210_T_START 1 |
| #endif |
| |
| #if defined CONFIG_ENS210_HUMIDITY_OFF |
| #define ENS210_H_RUN 0 |
| #define ENS210_H_START 0 |
| #elif defined CONFIG_ENS210_HUMIDITY_SINGLE |
| #define ENS210_H_RUN 0 |
| #define ENS210_H_START 1 |
| #elif defined CONFIG_ENS210_HUMIDITY_CONTINUOUS |
| #define ENS210_H_RUN 1 |
| #define ENS210_H_START 1 |
| #endif |
| |
| /* |
| * Polynomial |
| * 0b 1000 1001 ~ x^7+x^3+x^0 |
| * 0x 8 9 |
| */ |
| #define ENS210_CRC7_WIDTH 7 |
| #define ENS210_CRC7_POLY 0x89 |
| #define ENS210_CRC7_IVEC ((1UL << ENS210_CRC7_WIDTH) - 1) |
| #define ENS210_CRC7_DATA_WIDTH 17 |
| #define ENS210_CRC7_DATA_MASK ((1UL << ENS210_CRC7_DATA_WIDTH) - 1) |
| #define ENS210_CRC7_DATA_MSB (1UL << (ENS210_CRC7_DATA_WIDTH - 1)) |
| |
| struct ens210_value_data { |
| uint16_t val; |
| uint8_t valid : 1; |
| uint8_t crc7 : 7; |
| } __packed; |
| |
| struct ens210_sys_ctrl { |
| uint8_t low_power : 1; |
| uint8_t reserved : 6; |
| uint8_t reset : 1; |
| } __packed; |
| |
| struct ens210_sys_stat { |
| uint8_t sys_active : 1; |
| uint8_t reserved : 7; |
| } __packed; |
| |
| struct ens210_sens_run { |
| uint8_t t_run : 1; |
| uint8_t h_run : 1; |
| uint8_t reserved : 6; |
| } __packed; |
| |
| struct ens210_sens_start { |
| uint8_t t_start : 1; |
| uint8_t h_start : 1; |
| uint8_t reserved : 6; |
| } __packed; |
| |
| struct ens210_sens_stop { |
| uint8_t t_stop : 1; |
| uint8_t h_stop : 1; |
| uint8_t reserved : 6; |
| } __packed; |
| |
| struct ens210_sens_stat { |
| uint8_t t_stat : 1; |
| uint8_t h_stat : 1; |
| uint8_t reserved : 6; |
| } __packed; |
| |
| struct ens210_data { |
| struct ens210_value_data temp; |
| struct ens210_value_data humidity; |
| }; |
| |
| struct ens210_config { |
| struct i2c_dt_spec i2c; |
| }; |
| |
| #endif /* ZEPHYR_DRIVERS_SENSOR_ENS210_ENS210_H_ */ |