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<?php |
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namespace BultonFr\NMEA\Frames; |
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/** |
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* Define the parser system for GSV frame type |
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* |
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* @package BultonFr\NMEA |
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* @author Vermeulen Maxime <[email protected]> |
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* @link http://www.gpsinformation.org/dale/nmea.htm#GSV |
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* @link http://aprs.gids.nl/nmea/#gsv |
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*/ |
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class GSV extends \BultonFr\NMEA\Frame |
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{ |
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/** |
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* {@inheritdoc} |
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*/ |
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protected $frameType = 'GSV'; |
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/** |
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* {@inheritdoc} |
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*/ |
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protected $frameRegex = '/^' |
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.'([A-Z]{2}[A-Z]{3}),' //Equipment and trame type |
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.'(\d*),' //Number of sentences for full data |
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.'(\d*),' //Sentence number |
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.'(\d*)' //Number of satellites in view |
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.'(,(\d*),(\d*),(\d*),(\d*)' //Infos about first satellite |
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.'(,(\d*),(\d*),(\d*),(\d*)' //Infos about second satellite |
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.'(,(\d*),(\d*),(\d*),(\d*)' //Infos about trird satellite |
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.'(,(\d*),(\d*),(\d*),(\d*)' //Infos about fourth satellite |
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.')?)?)?)?' |
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.'$/m'; |
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/** |
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* @var int $sentenceTotalNumber Number of sentences for full data |
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*/ |
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protected $sentenceTotalNumber; |
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/** |
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* @var int $sentenceCurrentNumber Sentence number |
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*/ |
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protected $sentenceCurrentNumber; |
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/** |
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* @var int $satellitesNumber Number of satellites in view |
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*/ |
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protected $satellitesNumber; |
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/** |
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* @var \stdClass[] $satellitesInfos Infos about satellites |
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* Array of object; Object contains properties : |
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* * prnNumber |
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* * elevation in degrees. max 90 |
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* * azimuth, degrees from tue north. 0 to 359 |
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* * SNR. 0 to 99dB |
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*/ |
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protected $satellitesInfos; |
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/** |
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* Getter to property sentenceTotalNumber |
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* |
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* @return int |
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*/ |
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public function getSentenceTotalNumber() |
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{ |
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return $this->sentenceTotalNumber; |
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} |
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/** |
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* Getter to property sentenceCurrentNumber |
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* |
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* @return int |
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*/ |
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public function getSentenceCurrentNumber() |
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{ |
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return $this->sentenceCurrentNumber; |
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} |
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/** |
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* Getter to property satellitesNumber |
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* |
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* @return int |
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*/ |
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public function getSatellitesNumber() |
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{ |
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return $this->satellitesNumber; |
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} |
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/** |
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* Getter to property satelliteInfos |
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* |
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* @return \stdClass[] |
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*/ |
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public function getSatellitesInfos() |
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{ |
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return $this->satellitesInfos; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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protected function decodeFrame($msgParts) |
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{ |
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$this->sentenceTotalNumber = (int) $msgParts[2]; |
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$this->sentenceCurrentNumber = (int) $msgParts[3]; |
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$this->satellitesNumber = (int) $msgParts[4]; |
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for ($svIndex = 0; $svIndex <= 3; $svIndex++) { |
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$this->satellitesInfos[$svIndex] = (object) [ |
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'prnNumber' => 0, |
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'elevation' => 0, |
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'azimuth' => 0, |
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'SNR' => 0, |
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]; |
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$indexPos = 5 * $svIndex; |
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if (!isset($msgParts[(6 + $indexPos)])) { |
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continue; |
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} |
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$svInfos = &$this->satellitesInfos[$svIndex]; |
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$svInfos->prnNumber = (int) $msgParts[(6 + $indexPos)]; |
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$svInfos->elevation = (int) $msgParts[(7 + $indexPos)]; |
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$svInfos->azimuth = (int) $msgParts[(8 + $indexPos)]; |
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$svInfos->SNR = (int) $msgParts[(9 + $indexPos)]; |
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} |
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} |
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} |
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bulton-fr /
nmea-parser
