ccs811_regs.h File Reference

Register definitions for the AMS CCS811 digital gas sensor. More...

Detailed Description

Register definitions for the AMS CCS811 digital gas sensor.

Author

Gunar Schorcht gunar.nosp@m.@sch.nosp@m.orcht.nosp@m..net

Definition in file ccs811_regs.h.

Go to the source code of this file.

Macros
#define	CCS811_HW_ID   (0x81)
	CCS811 hardware ID.

CCS811 register addresses
#define	CCS811_REG_STATUS   (0x00)
#define	CCS811_REG_MEAS_MODE   (0x01)
#define	CCS811_REG_ALG_RESULT_DATA   (0x02)
#define	CCS811_REG_RAW_DATA   (0x03)
#define	CCS811_REG_ENV_DATA   (0x05)
#define	CCS811_REG_NTC   (0x06)
#define	CCS811_REG_THRESHOLDS   (0x10)
#define	CCS811_REG_BASELINE   (0x11)
#define	CCS811_REG_HW_ID   (0x20)
#define	CCS811_REG_HW_VER   (0x21)
#define	CCS811_REG_FW_BOOT_VER   (0x23)
#define	CCS811_REG_FW_APP_VER   (0x24)
#define	CCS811_REG_ERROR_ID   (0xe0)
#define	CCS811_REG_APP_ERASE   (0xf1)
#define	CCS811_REG_APP_DATA   (0xf2)
#define	CCS811_REG_APP_VERIFY   (0xf3)
#define	CCS811_REG_APP_START   (0xf4)
#define	CCS811_REG_SW_RESET   (0xff)

Status register bits (#CCS811_REG_STATUS)
#define	CCS811_STATUS_ERROR   (0x01)
	error occurred, details in CCS811_REG_ERROR
#define	CCS811_STATUS_DATA_RDY   (0x08)
	new data sample available in ALG_RESULT_DATA
#define	CCS811_STATUS_APP_VALID   (0x10)
	valid application firmware loaded
#define	CCS811_STATUS_FW_MODE   (0x80)
	firmware is in application mode

Error register bits (#CCS811_REG_ERROR_ID)
#define	CCS811_ERR_WRITE_REG_INV   (0x01)
	invalid register address on write
#define	CCS811_ERR_READ_REG_INV   (0x02)
	invalid register address on read
#define	CCS811_ERR_MEASMODE_INV   (0x04)
	invalid requested measurement mode
#define	CCS811_ERR_MAX_RESISTANCE   (0x08)
	maximum sensor resistance exceeded
#define	CCS811_ERR_HEATER_FAULT   (0x10)
	heater current not in range
#define	CCS811_ERR_HEATER_SUPPLY   (0x20)
	heater voltage not applied correctly