81 lines
1.7 KiB
C
81 lines
1.7 KiB
C
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/*
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* Copyright (c) 2018 Jan Van Winkel <jan.van_winkel@dxplore.eu>
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#ifndef __SENSOR_MS5837_H__
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#define __SENSOR_MS5837_H__
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#include <zephyr/types.h>
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#include <device.h>
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#include <i2c.h>
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#define MS5837_ADDR 0x76
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#define MS5837_CMD_RESET 0x1E
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#define MS5837_CMD_CONV_P_256 0x40
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#define MS5837_CMD_CONV_P_512 0x42
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#define MS5837_CMD_CONV_P_1024 0x44
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#define MS5837_CMD_CONV_P_2048 0x46
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#define MS5837_CMD_CONV_P_4096 0x48
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#define MS5837_CMD_CONV_P_8192 0x4A
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#define MS5837_CMD_CONV_T_256 0x50
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#define MS5837_CMD_CONV_T_512 0x52
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#define MS5837_CMD_CONV_T_1024 0x54
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#define MS5837_CMD_CONV_T_2048 0x56
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#define MS5837_CMD_CONV_T_4096 0x58
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#define MS5837_CMD_CONV_T_8192 0x5A
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#define MS5837_CMD_CONV_READ_ADC 0x00
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#define MS5837_CMD_CONV_READ_CRC 0xA0
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#define MS5837_CMD_CONV_READ_SENS_T1 0xA2
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#define MS5837_CMD_CONV_READ_OFF_T1 0xA4
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#define MS5837_CMD_CONV_READ_TCS 0xA6
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#define MS5837_CMD_CONV_READ_TCO 0xA8
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#define MS5837_CMD_CONV_READ_T_REF 0xAA
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#define MS5837_CMD_CONV_READ_TEMPSENS 0xAC
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#define MS5837_ADC_READ_DELAY_256 1
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#define MS5837_ADC_READ_DELAY_512 2
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#define MS5837_ADC_READ_DELAY_1024 3
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#define MS5837_ADC_READ_DELAY_2048 5
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#define MS5837_ADC_READ_DELAY_4086 10
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#define MS5837_ADC_READ_DELAY_8129 20
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struct ms5837_data {
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struct device *i2c_master;
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/* Calibration values */
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u16_t sens_t1;
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u16_t off_t1;
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u16_t tcs;
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u16_t tco;
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u16_t t_ref;
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u16_t tempsens;
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/* Measured values */
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s32_t pressure;
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s32_t temperature;
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/* Conversion commands */
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u8_t presure_conv_cmd;
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u8_t temperature_conv_cmd;
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/* Conversion delay in ms*/
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u8_t presure_conv_delay;
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u8_t temperature_conv_delay;
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};
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struct ms5837_config {
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const char *i2c_name;
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u8_t i2c_address;
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};
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#endif /* __SENSOR_MS5837_H__ */
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