ENS210.cpp File Reference

ENS210 temperature and humidity sensor driver. More...

#include <assert.h>
#include <stdio.h>
#include "FreeRTOS.h"
#include "task.h"
#include "ENS210.hpp"
#include "1wire/one_wire.h"
#include "1wire/DS28E18.h"

Include dependency graph for ENS210.cpp:

Go to the source code of this file.

Macros
#define	CRC7WIDTH   7
#define	CRC7POLY   0x89
#define	CRC7IVEC   0x7F
#define	DATA7WIDTH   17
#define	DATA7MASK   ((1UL<<DATA7WIDTH)-1)
#define	DATA7MSB   (1UL<<(DATA7WIDTH-1))

Enumerations
enum	ENS210_REG : uint8_t {   ENS210_REG_PART_ID = 0x00, ENS210_REG_UID = 0x04, ENS210_REG_SYS_CTRL = 0x10, ENS210_REG_SYS_STAT = 0x11,   ENS210_REG_SENS_RUN = 0x21, ENS210_REG_SENS_START = 0x22, ENS210_REG_SENS_STOP = 0x23, ENS210_REG_SENS_STAT = 0x24,   ENS210_REG_T_VAL = 0x30, ENS210_REG_H_VAL = 0x33 }

Detailed Description

ENS210 temperature and humidity sensor driver.

This driver operates an ENS210 over a 1-Wire bus using a DS2485 at the host end and a DS28E18 at the remote end.

References

Vendor-provided Arduino driver: https://github.com/sciosense/ENS210_driver (2020-04-06, v3).

Stack topology

imxRT1024 -> I2C -> DS2485 -> - - - 1-Wire - - - -> DS28E18 -> I2C -> ENS210

Notes

• Rather than driving the ENS210 directly from a host I2C controller, this code builds a DS28E18 command sequence and executes it remotely.
• I2C hardware initialization occurs in the platform-specific DS2485_ExecuteCommand implementation.

Update history

• 27-October-2023 Dave Nadler Initial version.

Todo:

Add solderOffset support.

Add conditional debug printf support.

Definition in file ENS210.cpp.