Gas sensor

Digital gas sensor API. More...

Modules
	CCS811 gas sensor
	CCS811 series ultra-low power digital gas sensor API.

Data Structures
struct	drv_gas_init_t
	Gas sensor init struct. More...

Typedefs
typedef void(*	drv_gas_sensor_data_handler_t )(drv_gas_sensor_data_t const *p_evt)
	Gas sensor driver event handler callback type.
typedef drv_ccs811_alg_result_t	drv_gas_sensor_data_t
	Struct for holding the measurement results.

Enumerations
enum	drv_gas_sensor_mode_t
	Gas sensor measurement intervals.

Functions
ret_code_t	drv_gas_sensor_baseline_get (uint16_t *p_baseline)
	Reads the baseline value from the gas sensor. More...
ret_code_t	drv_gas_sensor_baseline_set (uint16_t baseline)
	Writes baseline value to the gas sensor. More...
ret_code_t	drv_gas_sensor_calibrate_humid_temp (uint16_t rh_ppth, int32_t temp_mdeg)
	Calibrates the gas sensor based on the ambient humidity and temperature. More...
ret_code_t	drv_gas_sensor_init (drv_gas_init_t *p_init)
	Initializes the the gas sensor. More...
ret_code_t	drv_gas_sensor_raw_data_get (uint8_t *p_current_selected, uint16_t *p_raw_adc_reading)
	Writes baseline value to the gas sensor. More...
ret_code_t	drv_gas_sensor_start (drv_gas_sensor_mode_t mode)
	Starts data acquisition from the the gas sensor. More...
ret_code_t	drv_gas_sensor_stop (void)
	Stops data acquisition from the the gas sensor. More...

Detailed Description

Digital gas sensor API.

Function Documentation

ret_code_t drv_gas_sensor_baseline_get

(

uint16_t *

p_baseline

)

Reads the baseline value from the gas sensor.

Parameters

[out]

p_baseline

Baseline value read from the sensor.

Returns

NRF_SUCCESS If the call was successful.

Other codes from the underlying driver(s).

ret_code_t drv_gas_sensor_baseline_set

(

uint16_t

baseline

)

Writes baseline value to the gas sensor.

Parameters

[in]

baseline

Baseline value for writing to the sensor.

Returns

NRF_SUCCESS If the call was successful.

Other codes from the underlying driver(s).

ret_code_t drv_gas_sensor_calibrate_humid_temp	(	uint16_t	rh_ppth,
		int32_t	temp_mdeg
	)

Calibrates the gas sensor based on the ambient humidity and temperature.

Parameters

[in]	rh_ppth	Relative humidity in parts per thousand (ppt).
[in]	temp_mdeg	Temperature in millidegrees Centigrade.

Returns

NRF_SUCCESS If the call was successful.

Other codes from the underlying driver(s).

ret_code_t drv_gas_sensor_init

(

drv_gas_init_t *

p_init

)

Initializes the the gas sensor.

Parameters

[in]

p_init

Pointer with configuration parameters.

Returns

NRF_SUCCESS If the call was successful.

Other codes from the underlying driver(s).

ret_code_t drv_gas_sensor_raw_data_get	(	uint8_t *	p_current_selected,
		uint16_t *	p_raw_adc_reading
	)

Writes baseline value to the gas sensor.

Parameters

[out]	p_current_selected	The current trough the sensor [uA] (0 to 63 uA).
[out]	p_raw_adc_reading	Raw ADC read (0 to 1023).

Returns

NRF_SUCCESS If the call was successful.

Other codes from the underlying driver(s).

ret_code_t drv_gas_sensor_start

(

drv_gas_sensor_mode_t

mode

)

Starts data acquisition from the the gas sensor.

Parameters

[in]

mode

The given mode (frequency) of sensor reads.

Returns

NRF_SUCCESS If the call was successful.

Other codes from the underlying driver(s).

ret_code_t drv_gas_sensor_stop

(

void

)

Stops data acquisition from the the gas sensor.

Returns

NRF_SUCCESS If the call was successful.

NRF_ERROR_NOT_SUPPORTED The mode is currently not supported.

NRF_ERROR_INVALID_PARAM Invalid parameters supplied.

NRF_ERROR_INVALID_STATE The sensor is in an invalid state.

Other codes from the underlying driver(s).