<?php

/* ***********************************************************
 * This file was automatically generated on 2022-09-16.      *
 *                                                           *
 * PHP Bindings Version 2.1.30                               *
 *                                                           *
 * If you have a bugfix for this file and want to commit it, *
 * please fix the bug in the generator. You can find a link  *
 * to the generators git repository on tinkerforge.com       *
 *************************************************************/

namespace Tinkerforge;

require_once(__DIR__ . '/IPConnection.php');

/**
 * Measures Particulate Matter concentration (PM1.0, PM2.5 and PM10)
 */
class BrickletParticulateMatter extends Device
{

    /**
     * This callback is triggered periodically according to the configuration set by
     * BrickletParticulateMatter::setPMConcentrationCallbackConfiguration().
     * 
     * The parameters are the same as BrickletParticulateMatter::getPMConcentration().
     */
    const CALLBACK_PM_CONCENTRATION = 10;

    /**
     * This callback is triggered periodically according to the configuration set by
     * BrickletParticulateMatter::setPMCountCallbackConfiguration().
     * 
     * The parameters are the same as BrickletParticulateMatter::getPMCount().
     */
    const CALLBACK_PM_COUNT = 11;


    /**
     * @internal
     */
    const FUNCTION_GET_PM_CONCENTRATION = 1;

    /**
     * @internal
     */
    const FUNCTION_GET_PM_COUNT = 2;

    /**
     * @internal
     */
    const FUNCTION_SET_ENABLE = 3;

    /**
     * @internal
     */
    const FUNCTION_GET_ENABLE = 4;

    /**
     * @internal
     */
    const FUNCTION_GET_SENSOR_INFO = 5;

    /**
     * @internal
     */
    const FUNCTION_SET_PM_CONCENTRATION_CALLBACK_CONFIGURATION = 6;

    /**
     * @internal
     */
    const FUNCTION_GET_PM_CONCENTRATION_CALLBACK_CONFIGURATION = 7;

    /**
     * @internal
     */
    const FUNCTION_SET_PM_COUNT_CALLBACK_CONFIGURATION = 8;

    /**
     * @internal
     */
    const FUNCTION_GET_PM_COUNT_CALLBACK_CONFIGURATION = 9;

    /**
     * @internal
     */
    const FUNCTION_GET_SPITFP_ERROR_COUNT = 234;

    /**
     * @internal
     */
    const FUNCTION_SET_BOOTLOADER_MODE = 235;

    /**
     * @internal
     */
    const FUNCTION_GET_BOOTLOADER_MODE = 236;

    /**
     * @internal
     */
    const FUNCTION_SET_WRITE_FIRMWARE_POINTER = 237;

    /**
     * @internal
     */
    const FUNCTION_WRITE_FIRMWARE = 238;

    /**
     * @internal
     */
    const FUNCTION_SET_STATUS_LED_CONFIG = 239;

    /**
     * @internal
     */
    const FUNCTION_GET_STATUS_LED_CONFIG = 240;

    /**
     * @internal
     */
    const FUNCTION_GET_CHIP_TEMPERATURE = 242;

    /**
     * @internal
     */
    const FUNCTION_RESET = 243;

    /**
     * @internal
     */
    const FUNCTION_WRITE_UID = 248;

    /**
     * @internal
     */
    const FUNCTION_READ_UID = 249;

    /**
     * @internal
     */
    const FUNCTION_GET_IDENTITY = 255;

    const BOOTLOADER_MODE_BOOTLOADER = 0;
    const BOOTLOADER_MODE_FIRMWARE = 1;
    const BOOTLOADER_MODE_BOOTLOADER_WAIT_FOR_REBOOT = 2;
    const BOOTLOADER_MODE_FIRMWARE_WAIT_FOR_REBOOT = 3;
    const BOOTLOADER_MODE_FIRMWARE_WAIT_FOR_ERASE_AND_REBOOT = 4;
    const BOOTLOADER_STATUS_OK = 0;
    const BOOTLOADER_STATUS_INVALID_MODE = 1;
    const BOOTLOADER_STATUS_NO_CHANGE = 2;
    const BOOTLOADER_STATUS_ENTRY_FUNCTION_NOT_PRESENT = 3;
    const BOOTLOADER_STATUS_DEVICE_IDENTIFIER_INCORRECT = 4;
    const BOOTLOADER_STATUS_CRC_MISMATCH = 5;
    const STATUS_LED_CONFIG_OFF = 0;
    const STATUS_LED_CONFIG_ON = 1;
    const STATUS_LED_CONFIG_SHOW_HEARTBEAT = 2;
    const STATUS_LED_CONFIG_SHOW_STATUS = 3;

    const DEVICE_IDENTIFIER = 2110;

    const DEVICE_DISPLAY_NAME = 'Particulate Matter Bricklet';

    /**
     * Creates an object with the unique device ID $uid. This object can
     * then be added to the IP connection.
     *
     * @param string $uid
     */
    public function __construct($uid, $ipcon)
    {
        parent::__construct($uid, $ipcon, self::DEVICE_IDENTIFIER, self::DEVICE_DISPLAY_NAME);

        $this->api_version = array(2, 0, 0);

        $this->response_expected[self::FUNCTION_GET_PM_CONCENTRATION] = self::RESPONSE_EXPECTED_ALWAYS_TRUE;
        $this->response_expected[self::FUNCTION_GET_PM_COUNT] = self::RESPONSE_EXPECTED_ALWAYS_TRUE;
        $this->response_expected[self::FUNCTION_SET_ENABLE] = self::RESPONSE_EXPECTED_FALSE;
        $this->response_expected[self::FUNCTION_GET_ENABLE] = self::RESPONSE_EXPECTED_ALWAYS_TRUE;
        $this->response_expected[self::FUNCTION_GET_SENSOR_INFO] = self::RESPONSE_EXPECTED_ALWAYS_TRUE;
        $this->response_expected[self::FUNCTION_SET_PM_CONCENTRATION_CALLBACK_CONFIGURATION] = self::RESPONSE_EXPECTED_TRUE;
        $this->response_expected[self::FUNCTION_GET_PM_CONCENTRATION_CALLBACK_CONFIGURATION] = self::RESPONSE_EXPECTED_ALWAYS_TRUE;
        $this->response_expected[self::FUNCTION_SET_PM_COUNT_CALLBACK_CONFIGURATION] = self::RESPONSE_EXPECTED_TRUE;
        $this->response_expected[self::FUNCTION_GET_PM_COUNT_CALLBACK_CONFIGURATION] = self::RESPONSE_EXPECTED_ALWAYS_TRUE;
        $this->response_expected[self::FUNCTION_GET_SPITFP_ERROR_COUNT] = self::RESPONSE_EXPECTED_ALWAYS_TRUE;
        $this->response_expected[self::FUNCTION_SET_BOOTLOADER_MODE] = self::RESPONSE_EXPECTED_ALWAYS_TRUE;
        $this->response_expected[self::FUNCTION_GET_BOOTLOADER_MODE] = self::RESPONSE_EXPECTED_ALWAYS_TRUE;
        $this->response_expected[self::FUNCTION_SET_WRITE_FIRMWARE_POINTER] = self::RESPONSE_EXPECTED_FALSE;
        $this->response_expected[self::FUNCTION_WRITE_FIRMWARE] = self::RESPONSE_EXPECTED_ALWAYS_TRUE;
        $this->response_expected[self::FUNCTION_SET_STATUS_LED_CONFIG] = self::RESPONSE_EXPECTED_FALSE;
        $this->response_expected[self::FUNCTION_GET_STATUS_LED_CONFIG] = self::RESPONSE_EXPECTED_ALWAYS_TRUE;
        $this->response_expected[self::FUNCTION_GET_CHIP_TEMPERATURE] = self::RESPONSE_EXPECTED_ALWAYS_TRUE;
        $this->response_expected[self::FUNCTION_RESET] = self::RESPONSE_EXPECTED_FALSE;
        $this->response_expected[self::FUNCTION_WRITE_UID] = self::RESPONSE_EXPECTED_FALSE;
        $this->response_expected[self::FUNCTION_READ_UID] = self::RESPONSE_EXPECTED_ALWAYS_TRUE;
        $this->response_expected[self::FUNCTION_GET_IDENTITY] = self::RESPONSE_EXPECTED_ALWAYS_TRUE;

        $this->callback_wrappers[self::CALLBACK_PM_CONCENTRATION] = array(14, 'callbackWrapperPMConcentration');
        $this->callback_wrappers[self::CALLBACK_PM_COUNT] = array(20, 'callbackWrapperPMCount');

        $ipcon->addDevice($this);
    }

    /**
     * @internal
     * @param string $header
     * @param string $data
     */
    public function handleCallback($header, $data)
    {
        $wrapper = $this->callback_wrappers[$header['function_id']];

        if (8 + strlen($data) !== $wrapper[0]) {
            return; // Silently ignoring callback with wrong length
        }

        call_user_func(array($this, $wrapper[1]), $data);
    }

    /**
     * Returns the particulate matter concentration, broken down as:
     * 
     * * PM\ :sub:`1.0`\ ,
     * * PM\ :sub:`2.5`\  and
     * * PM\ :sub:`10.0`\ .
     * 
     * If the sensor is disabled (see BrickletParticulateMatter::setEnable()) then the last known good
     * values from the sensor are returned.
     * 
     * If you want to get the values periodically, it is recommended to use the
     * BrickletParticulateMatter::CALLBACK_PM_CONCENTRATION callback. You can set the callback configuration
     * with BrickletParticulateMatter::setPMConcentrationCallbackConfiguration().
     * 
     * 
     * @return array
     */
    public function getPMConcentration()
    {
        $this->checkValidity();

        $ret = array();

        $payload = '';

        $data = $this->sendRequest(self::FUNCTION_GET_PM_CONCENTRATION, $payload, 14);

        $payload = unpack('v1pm10/v1pm25/v1pm100', $data);

        $ret['pm10'] = $payload['pm10'];
        $ret['pm25'] = $payload['pm25'];
        $ret['pm100'] = $payload['pm100'];

        return $ret;
    }

    /**
     * Returns the number of particulates in 100 ml of air, broken down by their
     * diameter:
     * 
     * * greater 0.3µm,
     * * greater 0.5µm,
     * * greater 1.0µm,
     * * greater 2.5µm,
     * * greater 5.0µm and
     * * greater 10.0µm.
     * 
     * If the sensor is disabled (see BrickletParticulateMatter::setEnable()) then the last known good
     * value from the sensor is returned.
     * 
     * If you want to get the values periodically, it is recommended to use the
     * BrickletParticulateMatter::CALLBACK_PM_COUNT callback. You can set the callback configuration
     * with BrickletParticulateMatter::setPMCountCallbackConfiguration().
     * 
     * 
     * @return array
     */
    public function getPMCount()
    {
        $this->checkValidity();

        $ret = array();

        $payload = '';

        $data = $this->sendRequest(self::FUNCTION_GET_PM_COUNT, $payload, 20);

        $payload = unpack('v1greater03um/v1greater05um/v1greater10um/v1greater25um/v1greater50um/v1greater100um', $data);

        $ret['greater03um'] = $payload['greater03um'];
        $ret['greater05um'] = $payload['greater05um'];
        $ret['greater10um'] = $payload['greater10um'];
        $ret['greater25um'] = $payload['greater25um'];
        $ret['greater50um'] = $payload['greater50um'];
        $ret['greater100um'] = $payload['greater100um'];

        return $ret;
    }

    /**
     * Enables/Disables the fan and the laser diode of the sensors.
     * 
     * The sensor takes about 30 seconds after it is enabled to settle and produce stable
     * values.
     * 
     * The laser diode has a lifetime of about 8000 hours. If you want to measure in
     * an interval with a long idle time (e.g. hourly) you should turn the
     * laser diode off between the measurements.
     * 
     * @param bool $enable
     * 
     * @return void
     */
    public function setEnable($enable)
    {
        $this->checkValidity();

        $payload = '';
        $payload .= pack('C', intval((bool)$enable));

        $this->sendRequest(self::FUNCTION_SET_ENABLE, $payload, 0);
    }

    /**
     * Returns the state of the sensor as set by BrickletParticulateMatter::setEnable().
     * 
     * 
     * @return bool
     */
    public function getEnable()
    {
        $this->checkValidity();

        $payload = '';

        $data = $this->sendRequest(self::FUNCTION_GET_ENABLE, $payload, 9);

        $payload = unpack('C1enable', $data);

        return (bool)$payload['enable'];
    }

    /**
     * Returns information about the sensor:
     * 
     * * the sensor version number,
     * * the last error code reported by the sensor (0 means no error) and
     * * the number of framing and checksum errors that occurred in the communication
     *   with the sensor.
     * 
     * 
     * @return array
     */
    public function getSensorInfo()
    {
        $this->checkValidity();

        $ret = array();

        $payload = '';

        $data = $this->sendRequest(self::FUNCTION_GET_SENSOR_INFO, $payload, 12);

        $payload = unpack('C1sensor_version/C1last_error_code/C1framing_error_count/C1checksum_error_count', $data);

        $ret['sensor_version'] = $payload['sensor_version'];
        $ret['last_error_code'] = $payload['last_error_code'];
        $ret['framing_error_count'] = $payload['framing_error_count'];
        $ret['checksum_error_count'] = $payload['checksum_error_count'];

        return $ret;
    }

    /**
     * The period is the period with which the BrickletParticulateMatter::CALLBACK_PM_CONCENTRATION
     * callback is triggered periodically. A value of 0 turns the callback off.
     * 
     * If the `value has to change`-parameter is set to true, the callback is only
     * triggered after the value has changed. If the value didn't change within the
     * period, the callback is triggered immediately on change.
     * 
     * If it is set to false, the callback is continuously triggered with the period,
     * independent of the value.
     * 
     * @param int $period
     * @param bool $value_has_to_change
     * 
     * @return void
     */
    public function setPMConcentrationCallbackConfiguration($period, $value_has_to_change)
    {
        $this->checkValidity();

        $payload = '';
        $payload .= pack('V', $period);
        $payload .= pack('C', intval((bool)$value_has_to_change));

        $this->sendRequest(self::FUNCTION_SET_PM_CONCENTRATION_CALLBACK_CONFIGURATION, $payload, 0);
    }

    /**
     * Returns the callback configuration as set by
     * BrickletParticulateMatter::setPMConcentrationCallbackConfiguration().
     * 
     * 
     * @return array
     */
    public function getPMConcentrationCallbackConfiguration()
    {
        $this->checkValidity();

        $ret = array();

        $payload = '';

        $data = $this->sendRequest(self::FUNCTION_GET_PM_CONCENTRATION_CALLBACK_CONFIGURATION, $payload, 13);

        $payload = unpack('V1period/C1value_has_to_change', $data);

        $ret['period'] = IPConnection::fixUnpackedUInt32($payload, 'period');
        $ret['value_has_to_change'] = (bool)$payload['value_has_to_change'];

        return $ret;
    }

    /**
     * The period is the period with which the BrickletParticulateMatter::CALLBACK_PM_COUNT callback
     * is triggered periodically. A value of 0 turns the callback off.
     * 
     * If the `value has to change`-parameter is set to true, the callback is only
     * triggered after the value has changed. If the value didn't change within the
     * period, the callback is triggered immediately on change.
     * 
     * If it is set to false, the callback is continuously triggered with the period,
     * independent of the value.
     * 
     * @param int $period
     * @param bool $value_has_to_change
     * 
     * @return void
     */
    public function setPMCountCallbackConfiguration($period, $value_has_to_change)
    {
        $this->checkValidity();

        $payload = '';
        $payload .= pack('V', $period);
        $payload .= pack('C', intval((bool)$value_has_to_change));

        $this->sendRequest(self::FUNCTION_SET_PM_COUNT_CALLBACK_CONFIGURATION, $payload, 0);
    }

    /**
     * Returns the callback configuration as set by
     * BrickletParticulateMatter::setPMCountCallbackConfiguration().
     * 
     * 
     * @return array
     */
    public function getPMCountCallbackConfiguration()
    {
        $this->checkValidity();

        $ret = array();

        $payload = '';

        $data = $this->sendRequest(self::FUNCTION_GET_PM_COUNT_CALLBACK_CONFIGURATION, $payload, 13);

        $payload = unpack('V1period/C1value_has_to_change', $data);

        $ret['period'] = IPConnection::fixUnpackedUInt32($payload, 'period');
        $ret['value_has_to_change'] = (bool)$payload['value_has_to_change'];

        return $ret;
    }

    /**
     * Returns the error count for the communication between Brick and Bricklet.
     * 
     * The errors are divided into
     * 
     * * ACK checksum errors,
     * * message checksum errors,
     * * framing errors and
     * * overflow errors.
     * 
     * The errors counts are for errors that occur on the Bricklet side. All
     * Bricks have a similar function that returns the errors on the Brick side.
     * 
     * 
     * @return array
     */
    public function getSPITFPErrorCount()
    {
        $this->checkValidity();

        $ret = array();

        $payload = '';

        $data = $this->sendRequest(self::FUNCTION_GET_SPITFP_ERROR_COUNT, $payload, 24);

        $payload = unpack('V1error_count_ack_checksum/V1error_count_message_checksum/V1error_count_frame/V1error_count_overflow', $data);

        $ret['error_count_ack_checksum'] = IPConnection::fixUnpackedUInt32($payload, 'error_count_ack_checksum');
        $ret['error_count_message_checksum'] = IPConnection::fixUnpackedUInt32($payload, 'error_count_message_checksum');
        $ret['error_count_frame'] = IPConnection::fixUnpackedUInt32($payload, 'error_count_frame');
        $ret['error_count_overflow'] = IPConnection::fixUnpackedUInt32($payload, 'error_count_overflow');

        return $ret;
    }

    /**
     * Sets the bootloader mode and returns the status after the requested
     * mode change was instigated.
     * 
     * You can change from bootloader mode to firmware mode and vice versa. A change
     * from bootloader mode to firmware mode will only take place if the entry function,
     * device identifier and CRC are present and correct.
     * 
     * This function is used by Brick Viewer during flashing. It should not be
     * necessary to call it in a normal user program.
     * 
     * @param int $mode
     * 
     * @return int
     */
    public function setBootloaderMode($mode)
    {
        $this->checkValidity();

        $payload = '';
        $payload .= pack('C', $mode);

        $data = $this->sendRequest(self::FUNCTION_SET_BOOTLOADER_MODE, $payload, 9);

        $payload = unpack('C1status', $data);

        return $payload['status'];
    }

    /**
     * Returns the current bootloader mode, see BrickletParticulateMatter::setBootloaderMode().
     * 
     * 
     * @return int
     */
    public function getBootloaderMode()
    {
        $this->checkValidity();

        $payload = '';

        $data = $this->sendRequest(self::FUNCTION_GET_BOOTLOADER_MODE, $payload, 9);

        $payload = unpack('C1mode', $data);

        return $payload['mode'];
    }

    /**
     * Sets the firmware pointer for BrickletParticulateMatter::writeFirmware(). The pointer has
     * to be increased by chunks of size 64. The data is written to flash
     * every 4 chunks (which equals to one page of size 256).
     * 
     * This function is used by Brick Viewer during flashing. It should not be
     * necessary to call it in a normal user program.
     * 
     * @param int $pointer
     * 
     * @return void
     */
    public function setWriteFirmwarePointer($pointer)
    {
        $this->checkValidity();

        $payload = '';
        $payload .= pack('V', $pointer);

        $this->sendRequest(self::FUNCTION_SET_WRITE_FIRMWARE_POINTER, $payload, 0);
    }

    /**
     * Writes 64 Bytes of firmware at the position as written by
     * BrickletParticulateMatter::setWriteFirmwarePointer() before. The firmware is written
     * to flash every 4 chunks.
     * 
     * You can only write firmware in bootloader mode.
     * 
     * This function is used by Brick Viewer during flashing. It should not be
     * necessary to call it in a normal user program.
     * 
     * @param int[] $data
     * 
     * @return int
     */
    public function writeFirmware($data)
    {
        $this->checkValidity();

        $payload = '';
        for ($i = 0; $i < 64; $i++) {
            $payload .= pack('C', $data[$i]);
        }

        $data = $this->sendRequest(self::FUNCTION_WRITE_FIRMWARE, $payload, 9);

        $payload = unpack('C1status', $data);

        return $payload['status'];
    }

    /**
     * Sets the status LED configuration. By default the LED shows
     * communication traffic between Brick and Bricklet, it flickers once
     * for every 10 received data packets.
     * 
     * You can also turn the LED permanently on/off or show a heartbeat.
     * 
     * If the Bricklet is in bootloader mode, the LED is will show heartbeat by default.
     * 
     * @param int $config
     * 
     * @return void
     */
    public function setStatusLEDConfig($config)
    {
        $this->checkValidity();

        $payload = '';
        $payload .= pack('C', $config);

        $this->sendRequest(self::FUNCTION_SET_STATUS_LED_CONFIG, $payload, 0);
    }

    /**
     * Returns the configuration as set by BrickletParticulateMatter::setStatusLEDConfig()
     * 
     * 
     * @return int
     */
    public function getStatusLEDConfig()
    {
        $this->checkValidity();

        $payload = '';

        $data = $this->sendRequest(self::FUNCTION_GET_STATUS_LED_CONFIG, $payload, 9);

        $payload = unpack('C1config', $data);

        return $payload['config'];
    }

    /**
     * Returns the temperature as measured inside the microcontroller. The
     * value returned is not the ambient temperature!
     * 
     * The temperature is only proportional to the real temperature and it has bad
     * accuracy. Practically it is only useful as an indicator for
     * temperature changes.
     * 
     * 
     * @return int
     */
    public function getChipTemperature()
    {
        $this->checkValidity();

        $payload = '';

        $data = $this->sendRequest(self::FUNCTION_GET_CHIP_TEMPERATURE, $payload, 10);

        $payload = unpack('v1temperature', $data);

        return IPConnection::fixUnpackedInt16($payload, 'temperature');
    }

    /**
     * Calling this function will reset the Bricklet. All configurations
     * will be lost.
     * 
     * After a reset you have to create new device objects,
     * calling functions on the existing ones will result in
     * undefined behavior!
     * 
     * 
     * @return void
     */
    public function reset()
    {
        $this->checkValidity();

        $payload = '';

        $this->sendRequest(self::FUNCTION_RESET, $payload, 0);
    }

    /**
     * Writes a new UID into flash. If you want to set a new UID
     * you have to decode the Base58 encoded UID string into an
     * integer first.
     * 
     * We recommend that you use Brick Viewer to change the UID.
     * 
     * @param int $uid
     * 
     * @return void
     */
    public function writeUID($uid)
    {
        $this->checkValidity();

        $payload = '';
        $payload .= pack('V', $uid);

        $this->sendRequest(self::FUNCTION_WRITE_UID, $payload, 0);
    }

    /**
     * Returns the current UID as an integer. Encode as
     * Base58 to get the usual string version.
     * 
     * 
     * @return int
     */
    public function readUID()
    {
        $this->checkValidity();

        $payload = '';

        $data = $this->sendRequest(self::FUNCTION_READ_UID, $payload, 12);

        $payload = unpack('V1uid', $data);

        return IPConnection::fixUnpackedUInt32($payload, 'uid');
    }

    /**
     * Returns the UID, the UID where the Bricklet is connected to,
     * the position, the hardware and firmware version as well as the
     * device identifier.
     * 
     * The position can be 'a', 'b', 'c', 'd', 'e', 'f', 'g' or 'h' (Bricklet Port).
     * A Bricklet connected to an :ref:`Isolator Bricklet <isolator_bricklet>` is always at
     * position 'z'.
     * 
     * The device identifier numbers can be found :ref:`here <device_identifier>`.
     * |device_identifier_constant|
     * 
     * 
     * @return array
     */
    public function getIdentity()
    {
        $ret = array();

        $payload = '';

        $data = $this->sendRequest(self::FUNCTION_GET_IDENTITY, $payload, 33);

        $payload = unpack('c8uid/c8connected_uid/c1position/C3hardware_version/C3firmware_version/v1device_identifier', $data);

        $ret['uid'] = IPConnection::implodeUnpackedString($payload, 'uid', 8);
        $ret['connected_uid'] = IPConnection::implodeUnpackedString($payload, 'connected_uid', 8);
        $ret['position'] = chr($payload['position']);
        $ret['hardware_version'] = IPConnection::collectUnpackedArray($payload, 'hardware_version', 3);
        $ret['firmware_version'] = IPConnection::collectUnpackedArray($payload, 'firmware_version', 3);
        $ret['device_identifier'] = $payload['device_identifier'];

        return $ret;
    }

    /**
     * Registers the given $function with the given $callback_id. The optional
     * $user_data will be passed as the last parameter to the $function.
     *
     * @param int $callback_id
     * @param callable $function
     * @param mixed $user_data
     *
     * @return void
     */
    public function registerCallback($callback_id, $function, $user_data = NULL)
    {
        if (!is_callable($function)) {
            throw new \Exception('Function is not callable');
        }

        $this->registered_callbacks[$callback_id] = $function;
        $this->registered_callback_user_data[$callback_id] = $user_data;
    }

    /**
     * @internal
     * @param string $data
     */
    public function callbackWrapperPMConcentration($data)
    {
        $payload = unpack('v1pm10/v1pm25/v1pm100', $data);

        if (array_key_exists(self::CALLBACK_PM_CONCENTRATION, $this->registered_callbacks)) {
            $function = $this->registered_callbacks[self::CALLBACK_PM_CONCENTRATION];
            $user_data = $this->registered_callback_user_data[self::CALLBACK_PM_CONCENTRATION];

            call_user_func($function, $payload['pm10'], $payload['pm25'], $payload['pm100'], $user_data);
        }
    }

    /**
     * @internal
     * @param string $data
     */
    public function callbackWrapperPMCount($data)
    {
        $payload = unpack('v1greater03um/v1greater05um/v1greater10um/v1greater25um/v1greater50um/v1greater100um', $data);

        if (array_key_exists(self::CALLBACK_PM_COUNT, $this->registered_callbacks)) {
            $function = $this->registered_callbacks[self::CALLBACK_PM_COUNT];
            $user_data = $this->registered_callback_user_data[self::CALLBACK_PM_COUNT];

            call_user_func($function, $payload['greater03um'], $payload['greater05um'], $payload['greater10um'], $payload['greater25um'], $payload['greater50um'], $payload['greater100um'], $user_data);
        }
    }
}

?>
