1 | <?php
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2 | /**
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3 | * EIN/AUSGABE ueber COM
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4 | *
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5 | * Einfache Ein/Ausgabe ueber COM Schnittstelle unter Windows
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6 | *
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7 | * @V0.1 2011.06.12 Schnittstelle angesprochen
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8 | * @V0.2 2011.06.13 Lesen, Schreiben , OOP, Error
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9 | * @V0.3 2011.06.14 HTML Ein/Ausgabe
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10 | */
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11 |
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12 |
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13 | /**
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14 | * Error Message Stack
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15 | */
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16 | class errorMsg {
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17 | static private $aMsg = array();
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18 | static public function setError($p_sMsg = null) {self::$aMsg[] = $p_sMsg;}
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19 | static public function getError() {return self::$aMsg;}
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20 | static public function isError() {return count(self::$aMsg) ? true : false;}
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21 | }
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22 |
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23 |
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24 |
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25 | /**
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26 | * I/O uber Schnittstelle
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27 | */
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28 | class oCOM{
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29 |
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30 |
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31 | /**
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32 | * Konstruktor
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33 | *
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34 | * Set serial port parameters. Laut Doku: 9600 8-N-1
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35 | * Baud rate: 9600
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36 | * Parity (das "N" in "8-N-1") - Datenblock auf korrekten Inhalt zu überprüfen
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37 | * data - Character length (die "8" in "8-N-1")
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38 | * Stop bits (die "1" in "8-N-1")
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39 | * DTR - Data Terminal Ready
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40 | * RTS - Request to Send [Sendeanforderung]
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41 | *
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42 | */
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43 | public function __construct() {
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44 |
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45 | $fp1=`mode com2 BAUD=9600 PARITY=N data=8 stop=1 DTR=off RTS=off`;
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46 | $fp2=`mode com2 BAUD=9600 PARITY=N data=8 stop=1 DTR=off RTS=off`;
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47 | errorMsg::setError($fp1);
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48 | errorMsg::setError($fp2);
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49 | }
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50 |
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51 |
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52 | /**
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53 | * Klasse wird zerstört
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54 | *
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55 | */
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56 | public function __destruct() {
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57 | }
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58 |
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59 |
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60 | /**
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61 | * Senden der Daten ueber UART
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62 | */
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63 | public function send($comport,$zeichen) {
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64 | $this->fp1 = fopen ("$comport", "w+");
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65 | if (!$this->fp1){
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66 | errorMsg::setError("Port zum Schreiben nicht geöffnet!");
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67 | }
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68 | else {
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69 | fputs ($this->fp1, $zeichen);
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70 | fclose ($this->fp1);
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71 | }
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72 | }
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73 |
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74 |
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75 | /**
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76 | * Lesen der Daten ueber UART
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77 | */
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78 | public function read($comport2,$sekunde) {
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79 | $buffer = "";
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80 | $this->fp2 = fopen ("$comport2", "r+");
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81 | if (!$this->fp2){
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82 | errorMsg::setError("Port zum lesen nicht geöffnet");
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83 | }
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84 | else{
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85 | sleep($sekunden);
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86 | $buffer .= fgets($this->fp2, 4096);echo $buffer;echo "x";
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87 | }
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88 | return $buffer;
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89 | fclose ($this->fp2);
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90 | }
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91 | } //END io
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92 |
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93 |
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94 | /**
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95 | *
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96 | */
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97 |
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98 | $com="COM2";
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99 | $input="1";
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100 |
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101 | if(isset($_GET["com"]))$com=$_GET["com"];
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102 | if(isset($_GET["input"]))$input=$_GET["input"];
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103 |
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104 | $oCOM = new oCOM;
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105 | $oCOM->send($com,$input); // den Ziffer 2 senden
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106 | $lese = $oCOM->read($com,"3"); // 2 Sekunden lang Daten von COM2 abfragen
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107 |
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108 | ?>
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109 |
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110 |
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111 |
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112 |
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113 |
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114 |
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115 |
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116 |
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117 | <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
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118 | "http://www.w3.org/TR/html4/loose.dtd">
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119 | <html>
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120 | <head>
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121 | <title>IO Test</title>
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122 | </head>
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123 | <body>
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124 | <h3>Senden auf COM</h3>
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125 | <p>
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126 |
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127 | <form action="com_schnittstelle.php" method="get" enctype="MIME-Typ">
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128 | <label>Schnittstelle: </label>
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129 | <input name="com"type="text" value="COM2">
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130 | <label>Sende Ziffer 0- 9: </label>
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131 | <input name="input"type="text" value="1">
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132 | <input type="submit" value="senden">
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133 | </form>
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134 |
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135 |
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136 | <h3>Empfangen von COM</h3>
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137 | <code style="white-space:pre-wrap !important;">
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138 | <?php
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139 | echo "Ergebnis:".$lese;
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140 | ?>
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141 | </code>
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142 | <h3>Error/Log</h3>
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143 | <p>
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144 | <?php
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145 | /**
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146 | * wenn Fehlermeldungen existieren, diese ausgeben
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147 | */
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148 | if (errorMsg::isError()) {
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149 | var_dump(errorMsg::getError());
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150 | }
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151 | ?>
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152 | </p>
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153 | </body>
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154 | </html>
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