Driver SDS011 Laser Dust Sensor. More...

Detailed Description

Driver SDS011 Laser Dust Sensor.

Files
file	sds011.h
	Interface for controlling SDS011 Laser Dust Sensor.

file	sds011_internal.h
	Internal constants etc. for the SDS011 laser dust sensor.

file	sds011_params.h
	SDS011 sensor specific configuration.

Data Structures
struct	sds011_params_t
	Configuration parameters for SDS011 Laser Dust Sensor. More...

struct	sds011_data_t
	Data type for storing SDS011 sensor readings. More...

struct	sds011_t
	Device descriptor definition for SDS011 Laser Dust Sensor. More...

Macros
#define	SDS011_DEVID_WILDCARD (0xFFFF)
	SDS011 wildcard address to address all devices.

Typedefs
typedef enum sds011_reporting_mode	sds011_reporting_mode_t
	Report mode of the SDS011 sensor.

typedef enum sds011_working_mode	sds011_working_mode_t
	Work/sleep mode of the SDS011 sensor.

typedef void(*	sds011_callback_t) (sds011_data_t data, void ctx)
	callback for measurements actively reported by the SDS011 sensor

Enumerations
enum	{ SDS011_OK, SDS011_INVALID_RESPONSE, SDS011_INVALID_CHKSUM, SDS011_ERROR }
	Named return values. More...

enum	sds011_reporting_mode { SDS011_RMODE_ACTIVE = 0, SDS011_RMODE_QUERY = 1 }
	Report mode of the SDS011 sensor. More...

enum	sds011_working_mode { SDS011_WMODE_SLEEP = 0, SDS011_WMODE_WORK = 1 }
	Work/sleep mode of the SDS011 sensor. More...

Functions
int	sds011_init (sds011_t dev, const sds011_params_t params)
	Initialize SDS011 Laser Dust Sensor. More...

void	sds011_power_on (const sds011_t *dev)
	Enable power supply of SDS011 laser dust sensor. More...

void	sds011_power_off (const sds011_t *dev)
	Disable power supply of SDS011 laser dust sensor. More...

int	sds011_read (sds011_t dev, sds011_data_t data)
	Read measurement values from SDS011 laser dust sensor. More...

int	sds011_register_callback (sds011_t dev, sds011_callback_t cb, void ctx)
	Register measurement callback. More...

int	sds011_get_reporting_mode (sds011_t dev, sds011_reporting_mode_t mode)
	Get the current reporting mode of the sensor. More...

int	sds011_set_reporting_mode (sds011_t *dev, sds011_reporting_mode_t mode)
	Set the reporting mode of the sensor. More...

int	sds011_get_working_mode (sds011_t dev, sds011_working_mode_t mode)
	Get current working mode of the sensor. More...

int	sds011_set_working_mode (sds011_t *dev, sds011_working_mode_t mode)
	Set working mode of the sensor. More...

int	sds011_get_working_period (sds011_t dev, uint8_t minutes)
	Get current working period of the sensor. More...

int	sds011_set_working_period (sds011_t *dev, uint8_t minutes)
	Set working period of the sensor. More...

int	sds011_get_fw_version (sds011_t dev, uint8_t year, uint8_t mon, uint8_t day)
	Get firmware version of the sensor. More...

int	sds011_set_dev_id (sds011_t *dev, uint16_t sens_dev_id)
	Set device ID of the sensor. More...

Enumeration Type Documentation

◆ anonymous enum

anonymous enum

Named return values.

Enumerator
SDS011_OK	all good
SDS011_INVALID_RESPONSE	invalid response
SDS011_INVALID_CHKSUM	invalid checksum
SDS011_ERROR	internal error

Definition at line 43 of file sds011.h.

◆ sds011_reporting_mode

enum sds011_reporting_mode

Report mode of the SDS011 sensor.

Enumerator
SDS011_RMODE_ACTIVE	continuously reporting values
SDS011_RMODE_QUERY	sensor needs to be queried

Definition at line 53 of file sds011.h.

◆ sds011_working_mode

enum sds011_working_mode

Work/sleep mode of the SDS011 sensor.

Enumerator
SDS011_WMODE_SLEEP	laser & fan are disabled
SDS011_WMODE_WORK	laser & fan are enabled

Definition at line 61 of file sds011.h.

Function Documentation

◆ sds011_get_fw_version()

int sds011_get_fw_version	(	sds011_t *	dev,
		uint8_t *	year,
		uint8_t *	mon,
		uint8_t *	day
	)

Get firmware version of the sensor.

Parameters

[in]	dev	device descriptor
[out]	year	year of the firmware version
[out]	mon	month of the firmware version
[out]	day	day of the firmware version

Returns: SDS011_OK on success; SDS011_INVALID_RESPONSE when response doesn't match the request; SDS011_INVALID_CHKSUM when response checksum is invalid; SDS011_ERROR when other error occurred

Precondition: dev != NULL; year != NULL; mon != NULL; day != NULL

◆ sds011_get_reporting_mode()

int sds011_get_reporting_mode	(	sds011_t *	dev,
		sds011_reporting_mode_t *	mode
	)

Get the current reporting mode of the sensor.

Parameters

[in]	dev	device descriptor
[out]	mode	SDS011_RMODE_ACTIVE: continuously report new values SDS011_RMODE_QUERY: new values need to be requested

Returns: SDS011_OK on success; SDS011_INVALID_RESPONSE when response doesn't match the request; SDS011_INVALID_CHKSUM when response checksum is invalid; SDS011_ERROR when other error occurred

Precondition: dev != NULL

◆ sds011_get_working_mode()

int sds011_get_working_mode	(	sds011_t *	dev,
		sds011_working_mode_t *	mode
	)

Get current working mode of the sensor.

Parameters

[in]	dev	device descriptor
[out]	mode	SDS011_WMODE_SLEEP: sensor is in sleep mode (~3 mA) SDS011_WMODE_WORK: sensor is in working mode (~65 mA)

Returns: SDS011_OK on success; SDS011_INVALID_RESPONSE when response doesn't match the request; SDS011_INVALID_CHKSUM when response checksum is invalid; SDS011_ERROR when other error occurred

Precondition: dev != NULL

◆ sds011_get_working_period()

int sds011_get_working_period	(	sds011_t *	dev,
		uint8_t *	minutes
	)

Get current working period of the sensor.

Parameters

[in]	dev	device descriptor
[out]	minutes	working period of the sensor in minutes

Returns: SDS011_OK on success; SDS011_INVALID_RESPONSE when response doesn't match the request; SDS011_INVALID_CHKSUM when response checksum is invalid; SDS011_ERROR when other error occurred

Precondition: dev != NULL

◆ sds011_init()

int sds011_init	(	sds011_t *	dev,
		const sds011_params_t *	params
	)

Initialize SDS011 Laser Dust Sensor.

Parameters

[out]	dev	device descriptor
[in]	params	device configuration

Precondition: dev != NULL; params != NULL

Returns: SDS011_OK on success; SDS011_ERROR on error

◆ sds011_power_off()

void sds011_power_off ( const sds011_t * dev )

Disable power supply of SDS011 laser dust sensor.

Parameters

[in] dev device descriptor

Precondition: dev != NULL

◆ sds011_power_on()

void sds011_power_on ( const sds011_t * dev )

Enable power supply of SDS011 laser dust sensor.

Parameters

[in] dev device descriptor

Precondition: dev != NULL

◆ sds011_read()

int sds011_read	(	sds011_t *	dev,
		sds011_data_t *	data
	)

Read measurement values from SDS011 laser dust sensor.

Parameters

[in]	dev	device descriptor
[out]	data	pointer for storing the values

Returns: SDS011_OK on success; SDS011_INVALID_RESPONSE when response doesn't match the request; SDS011_INVALID_CHKSUM when response checksum is invalid; SDS011_ERROR when other error occurred

Precondition: dev != NULL; data != NULL

◆ sds011_register_callback()

int sds011_register_callback	(	sds011_t *	dev,
		sds011_callback_t	cb,
		void *	ctx
	)

Register measurement callback.

     The registered callback is executed when new measurements were
     received by the sensor. This function should be used together with
     active reporting mode of the sensor that automatically sends new
     measurements periodically (factory default setting of the sensor).

Parameters

[in]	dev	device descriptor
[in]	cb	function to be called for new values (NULL for disable)
[in]	ctx	context pointer that will be handed to the callback

Returns: SDS011_OK on success; SDS011_ERROR when error occurred

Precondition: dev != NULL

◆ sds011_set_dev_id()

int sds011_set_dev_id	(	sds011_t *	dev,
		uint16_t	sens_dev_id
	)

Set device ID of the sensor.

Parameters

[in]	dev	device descriptor
[in]	sens_dev_id	ID as one number (ID byte 1 MSB, ID byte 2 LSB)

Note: This setting is persistent even after a full power-cycle! Factory default is an individual ID which is printed next to the serial number barcode. For the number xxxx-abab the ID is 0xabab.

Returns: SDS011_OK on success; SDS011_INVALID_RESPONSE when response doesn't match the request; SDS011_INVALID_CHKSUM when response checksum is invalid; SDS011_ERROR when other error occurred

Precondition: dev != NULL

◆ sds011_set_reporting_mode()

int sds011_set_reporting_mode	(	sds011_t *	dev,
		sds011_reporting_mode_t	mode
	)

Set the reporting mode of the sensor.

Parameters

[in]	dev	device descriptor
[in]	mode	SDS011_RMODE_ACTIVE: continuously report new values SDS011_RMODE_QUERY: new values need to be requested

Note: This setting is persistent even after a full power-cycle! Factory default is SDS011_RMODE_ACTIVE

Returns: SDS011_OK on success; SDS011_INVALID_RESPONSE when response doesn't match the request; SDS011_INVALID_CHKSUM when response checksum is invalid; SDS011_ERROR when other error occurred

Precondition: dev != NULL

◆ sds011_set_working_mode()

int sds011_set_working_mode	(	sds011_t *	dev,
		sds011_working_mode_t	mode
	)

Set working mode of the sensor.

Parameters

[in]	dev	device descriptor
[in]	mode	SDS011_WMODE_SLEEP: put to sleep mode (~3 mA) SDS011_WMODE_WORK: put to working mode (~65 mA)

Returns: SDS011_OK on success; SDS011_INVALID_RESPONSE when response doesn't match the request; SDS011_INVALID_CHKSUM when response checksum is invalid; SDS011_ERROR when other error occurred

Precondition: dev != NULL

◆ sds011_set_working_period()

int sds011_set_working_period	(	sds011_t *	dev,
		uint8_t	minutes
	)

Set working period of the sensor.

Parameters

[in]	dev	device descriptor
[in]	minutes	0 - 30 new working period of the sensor in minutes 0 for continuous reporting mode 1 - 30 for a period of `minutes`

Note: For values greater than 0, the active duration (fan, laser enabled) is always fixed to 30 seconds, while the sleep duration is adjusted to give an overall period of minutes.

Returns: SDS011_OK on success; SDS011_INVALID_RESPONSE when response doesn't match the request; SDS011_INVALID_CHKSUM when response checksum is invalid; SDS011_ERROR when other error occurred

Precondition: dev != NULL

Detailed Description

Files

Data Structures

Macros

Typedefs

Enumerations

Functions

Enumeration Type Documentation

◆ anonymous enum

◆ sds011_reporting_mode

◆ sds011_working_mode

Function Documentation

◆ sds011_get_fw_version()

◆ sds011_get_reporting_mode()

◆ sds011_get_working_mode()

◆ sds011_get_working_period()

◆ sds011_init()

◆ sds011_power_off()

◆ sds011_power_on()

◆ sds011_read()

◆ sds011_register_callback()

◆ sds011_set_dev_id()

◆ sds011_set_reporting_mode()

◆ sds011_set_working_mode()

◆ sds011_set_working_period()